Merge in downstream code (chui fixes, materials)

19 files changed, 2849 insertions, 58 deletions

diff --git a/indra/llrender/CMakeLists.txt b/indra/llrender/CMakeLists.txt
index 516af93316..669b70aa43 100644
--- a/indra/llrender/CMakeLists.txt
+++ b/indra/llrender/CMakeLists.txt
@@ -3,7 +3,7 @@
 project(llrender)
 
 include(00-Common)
-include(FindOpenGL)
+include(OpenGL)
 include(FreeType)
 include(LLCommon)
 include(LLImage)
@@ -25,21 +25,31 @@ include_directories(
     ${LLXML_INCLUDE_DIRS}
     ${LLVFS_INCLUDE_DIRS}
     )
+include_directories(SYSTEM
+    ${LLCOMMON_SYSTEM_INCLUDE_DIRS}
+    ${LLXML_SYSTEM_INCLUDE_DIRS}
+    )
 
 set(llrender_SOURCE_FILES
     llcubemap.cpp
+    llfontbitmapcache.cpp
     llfontfreetype.cpp
     llfontgl.cpp
-    llfontbitmapcache.cpp
     llfontregistry.cpp
+    llgl.cpp
     llgldbg.cpp
     llglslshader.cpp
+    llgltexture.cpp
     llimagegl.cpp
     llpostprocess.cpp
+    llrender.cpp
+    llrender2dutils.cpp
     llrendernavprim.cpp
     llrendersphere.cpp
+    llrendertarget.cpp
     llshadermgr.cpp
     lltexture.cpp
+    lluiimage.cpp
     llvertexbuffer.cpp
     )
     
@@ -56,14 +66,17 @@ set(llrender_HEADER_FILES
     llglheaders.h
     llglslshader.h
     llglstates.h
+    llgltexture.h
     llgltypes.h
     llimagegl.h
     llpostprocess.h
     llrender.h
+    llrender2dutils.h
     llrendernavprim.h
     llrendersphere.h
     llshadermgr.h
     lltexture.h
+    lluiimage.h
     llvertexbuffer.h
     )
 
@@ -72,33 +85,47 @@ set_source_files_properties(${llrender_HEADER_FILES}
 
 list(APPEND llrender_SOURCE_FILES ${llrender_HEADER_FILES})
 
-if (SERVER AND NOT WINDOWS AND NOT DARWIN)
-  copy_server_sources(
-      llgl
-      llrender
-      )
-
-
-  set_source_files_properties(
-    ${server_SOURCE_FILES}
-    PROPERTIES
-    COMPILE_FLAGS "-DLL_MESA=1 -DLL_MESA_HEADLESS=1"
-    )
+if (BUILD_HEADLESS)
   add_library (llrenderheadless
     ${llrender_SOURCE_FILES}
-    ${server_SOURCE_FILES}
     )
-else (SERVER AND NOT WINDOWS AND NOT DARWIN)
-  list(APPEND llrender_SOURCE_FILES
-      llgl.cpp
-      llrender.cpp
-      llrendertarget.cpp
-      )
-endif (SERVER AND NOT WINDOWS AND NOT DARWIN)
+
+  set_property(TARGET llrenderheadless
+    PROPERTY COMPILE_DEFINITIONS LL_MESA=1 LL_MESA_HEADLESS=1
+    )
+
+  target_link_libraries(llrenderheadless
+    ${LLCOMMON_LIBRARIES}
+    ${LLIMAGE_LIBRARIES}
+    ${LLMATH_LIBRARIES}
+    ${LLRENDER_HEADLESS_LIBRARIES}
+    ${LLVFS_LIBRARIES}
+    ${LLXML_LIBRARIES}
+    ${LLVFS_LIBRARIES}
+    ${LLWINDOW_HEADLESS_LIBRARIES}
+    ${OPENGL_HEADLESS_LIBRARIES})
+
+endif (BUILD_HEADLESS)
+
 add_library (llrender ${llrender_SOURCE_FILES})
+
+if (SDL_FOUND)
+  set_property(TARGET llrender
+    PROPERTY COMPILE_DEFINITIONS LL_SDL=1
+    )
+endif (SDL_FOUND)
+
 # Libraries on which this library depends, needed for Linux builds
 # Sort by high-level to low-level
 target_link_libraries(llrender 
-    llimage 
+    ${LLCOMMON_LIBRARIES}
+    ${LLIMAGE_LIBRARIES}
+    ${LLMATH_LIBRARIES}
+    ${LLRENDER_LIBRARIES}
+    ${LLVFS_LIBRARIES}
+    ${LLXML_LIBRARIES}
+    ${LLVFS_LIBRARIES}
+    ${LLWINDOW_LIBRARIES}
     ${FREETYPE_LIBRARIES}
     ${OPENGL_LIBRARIES})
+
diff --git a/indra/llrender/llfontfreetype.cpp b/indra/llrender/llfontfreetype.cpp
index 66d4ad2d87..058bef43a5 100644
--- a/indra/llrender/llfontfreetype.cpp
+++ b/indra/llrender/llfontfreetype.cpp
@@ -485,14 +485,11 @@ void LLFontFreetype::renderGlyph(U32 glyph_index) const
 	if (mFTFace == NULL)
 		return;
 
-	int error = FT_Load_Glyph(mFTFace, glyph_index, FT_LOAD_FORCE_AUTOHINT );
-	llassert(!error);
+	llassert_always(! FT_Load_Glyph(mFTFace, glyph_index, FT_LOAD_FORCE_AUTOHINT) );
 
-	error = FT_Render_Glyph(mFTFace->glyph, gFontRenderMode);
+	llassert_always(! FT_Render_Glyph(mFTFace->glyph, gFontRenderMode) );
 
 	mRenderGlyphCount++;
-	
-	llassert(!error);
 }
 
 void LLFontFreetype::reset(F32 vert_dpi, F32 horz_dpi)
diff --git a/indra/llrender/llfontgl.cpp b/indra/llrender/llfontgl.cpp
index 8772779645..c4f36cabd0 100644
--- a/indra/llrender/llfontgl.cpp
+++ b/indra/llrender/llfontgl.cpp
@@ -541,7 +541,6 @@ S32 LLFontGL::maxDrawableChars(const llwchar* wchars, F32 max_pixels, S32 max_ch
 	
 	BOOL clip = FALSE;
 	F32 cur_x = 0;
-	F32 drawn_x = 0;
 
 	S32 start_of_last_word = 0;
 	BOOL in_word = FALSE;
@@ -629,7 +628,6 @@ S32 LLFontGL::maxDrawableChars(const llwchar* wchars, F32 max_pixels, S32 max_ch
 
 		// Round after kerning.
 		cur_x = (F32)llround(cur_x);
-		drawn_x = cur_x;
 	}
 
 	if( clip )
diff --git a/indra/llrender/llfontregistry.cpp b/indra/llrender/llfontregistry.cpp
index b5bdba996f..f5ca8d5b04 100644
--- a/indra/llrender/llfontregistry.cpp
+++ b/indra/llrender/llfontregistry.cpp
@@ -223,7 +223,7 @@ std::string currentOsName()
 	return "Windows";
 #elif LL_DARWIN
 	return "Mac";
-#elif LL_SDL
+#elif LL_SDL || LL_MESA_HEADLESS
 	return "Linux";
 #else
 	return "";
diff --git a/indra/llrender/llgl.cpp b/indra/llrender/llgl.cpp
index faed0b3a15..d8ccbf7b24 100644
--- a/indra/llrender/llgl.cpp
+++ b/indra/llrender/llgl.cpp
@@ -1498,6 +1498,7 @@ void assert_glerror()
 void clear_glerror()
 {
 	glGetError();
+	glGetError();
 }
 
 ///////////////////////////////////////////////////////////////
diff --git a/indra/llrender/llglslshader.h b/indra/llrender/llglslshader.h
index 619c3559ea..019d5a86d6 100644
--- a/indra/llrender/llglslshader.h
+++ b/indra/llrender/llglslshader.h
@@ -157,6 +157,8 @@ public:
 extern LLGLSLShader			gUIProgram;
 //output vec4(color.rgb,color.a*tex0[tc0].a)
 extern LLGLSLShader			gSolidColorProgram;
+//Alpha mask shader (declared here so llappearance can access properly)
+extern LLGLSLShader			gAlphaMaskProgram;
 
 
 #endif
diff --git a/indra/llrender/llgltexture.cpp b/indra/llrender/llgltexture.cpp
new file mode 100644
index 0000000000..d06ed5e57b
--- /dev/null
+++ b/indra/llrender/llgltexture.cpp
@@ -0,0 +1,396 @@
+/** 
+ * @file llgltexture.cpp
+ * @brief Opengl texture implementation
+ *
+ * $LicenseInfo:firstyear=2000&license=viewerlgpl$
+ * 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 "linden_common.h"
+#include "llgltexture.h"
+
+
+// static
+S32 LLGLTexture::getTotalNumOfCategories() 
+{
+	return MAX_GL_IMAGE_CATEGORY - (BOOST_HIGH - BOOST_SCULPTED) + 2 ;
+}
+
+// static
+//index starts from zero.
+S32 LLGLTexture::getIndexFromCategory(S32 category) 
+{
+	return (category < BOOST_HIGH) ? category : category - (BOOST_HIGH - BOOST_SCULPTED) + 1 ;
+}
+
+//static 
+S32 LLGLTexture::getCategoryFromIndex(S32 index)
+{
+	return (index < BOOST_HIGH) ? index : index + (BOOST_HIGH - BOOST_SCULPTED) - 1 ;
+}
+
+LLGLTexture::LLGLTexture(BOOL usemipmaps)
+{
+	init();
+	mUseMipMaps = usemipmaps;
+}
+
+LLGLTexture::LLGLTexture(const U32 width, const U32 height, const U8 components, BOOL usemipmaps)
+{
+	init();
+	mFullWidth = width ;
+	mFullHeight = height ;
+	mUseMipMaps = usemipmaps;
+	mComponents = components ;
+	setTexelsPerImage();
+}
+
+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) ;
+}
+
+LLGLTexture::~LLGLTexture()
+{
+	cleanup();
+}
+
+void LLGLTexture::init()
+{
+	mBoostLevel = LLGLTexture::BOOST_NONE;
+
+	mFullWidth = 0;
+	mFullHeight = 0;
+	mTexelsPerImage = 0 ;
+	mUseMipMaps = FALSE ;
+	mComponents = 0 ;
+
+	mTextureState = NO_DELETE ;
+	mDontDiscard = FALSE;
+	mNeedsGLTexture = FALSE ;
+}
+
+void LLGLTexture::cleanup()
+{
+	if(mGLTexturep)
+	{
+		mGLTexturep->cleanup();
+	}
+}
+
+// virtual
+void LLGLTexture::dump()
+{
+	if(mGLTexturep)
+	{
+		mGLTexturep->dump();
+	}
+}
+
+void LLGLTexture::setBoostLevel(S32 level)
+{
+	if(mBoostLevel != level)
+	{
+		mBoostLevel = level ;
+		if(mBoostLevel != LLGLTexture::BOOST_NONE)
+		{
+			setNoDelete() ;		
+		}
+	}
+}
+
+void LLGLTexture::forceActive()
+{
+	mTextureState = ACTIVE ; 
+}
+
+void LLGLTexture::setActive() 
+{ 
+	if(mTextureState != NO_DELETE)
+	{
+		mTextureState = ACTIVE ; 
+	}
+}
+
+//set the texture to stay in memory
+void LLGLTexture::setNoDelete() 
+{ 
+	mTextureState = NO_DELETE ;
+}
+
+void LLGLTexture::generateGLTexture() 
+{	
+	if(mGLTexturep.isNull())
+	{
+		mGLTexturep = new LLImageGL(mFullWidth, mFullHeight, mComponents, mUseMipMaps) ;
+	}
+}
+
+LLImageGL* LLGLTexture::getGLTexture() const
+{
+	llassert(mGLTexturep.notNull()) ;
+
+	return mGLTexturep ;
+}
+
+BOOL LLGLTexture::createGLTexture() 
+{
+	if(mGLTexturep.isNull())
+	{
+		generateGLTexture() ;
+	}
+
+	return mGLTexturep->createGLTexture() ;
+}
+
+BOOL LLGLTexture::createGLTexture(S32 discard_level, const LLImageRaw* imageraw, S32 usename, BOOL to_create, S32 category)
+{
+	llassert(mGLTexturep.notNull()) ;	
+
+	BOOL ret = mGLTexturep->createGLTexture(discard_level, imageraw, usename, to_create, category) ;
+
+	if(ret)
+	{
+		mFullWidth = mGLTexturep->getCurrentWidth() ;
+		mFullHeight = mGLTexturep->getCurrentHeight() ; 
+		mComponents = mGLTexturep->getComponents() ;	
+		setTexelsPerImage();
+	}
+
+	return ret ;
+}
+
+void LLGLTexture::setExplicitFormat(LLGLint internal_format, LLGLenum primary_format, LLGLenum type_format, BOOL swap_bytes)
+{
+	llassert(mGLTexturep.notNull()) ;
+	
+	mGLTexturep->setExplicitFormat(internal_format, primary_format, type_format, swap_bytes) ;
+}
+void LLGLTexture::setAddressMode(LLTexUnit::eTextureAddressMode mode)
+{
+	llassert(mGLTexturep.notNull()) ;
+	mGLTexturep->setAddressMode(mode) ;
+}
+void LLGLTexture::setFilteringOption(LLTexUnit::eTextureFilterOptions option)
+{
+	llassert(mGLTexturep.notNull()) ;
+	mGLTexturep->setFilteringOption(option) ;
+}
+
+//virtual
+S32	LLGLTexture::getWidth(S32 discard_level) const
+{
+	llassert(mGLTexturep.notNull()) ;
+	return mGLTexturep->getWidth(discard_level) ;
+}
+
+//virtual
+S32	LLGLTexture::getHeight(S32 discard_level) const
+{
+	llassert(mGLTexturep.notNull()) ;
+	return mGLTexturep->getHeight(discard_level) ;
+}
+
+S32 LLGLTexture::getMaxDiscardLevel() const
+{
+	llassert(mGLTexturep.notNull()) ;
+	return mGLTexturep->getMaxDiscardLevel() ;
+}
+S32 LLGLTexture::getDiscardLevel() const
+{
+	llassert(mGLTexturep.notNull()) ;
+	return mGLTexturep->getDiscardLevel() ;
+}
+S8  LLGLTexture::getComponents() const 
+{ 
+	llassert(mGLTexturep.notNull()) ;
+	
+	return mGLTexturep->getComponents() ;
+}
+
+LLGLuint LLGLTexture::getTexName() const 
+{ 
+	llassert(mGLTexturep.notNull()) ;
+
+	return mGLTexturep->getTexName() ; 
+}
+
+BOOL LLGLTexture::hasGLTexture() const 
+{
+	if(mGLTexturep.notNull())
+	{
+		return mGLTexturep->getHasGLTexture() ;
+	}
+	return FALSE ;
+}
+
+BOOL LLGLTexture::getBoundRecently() const
+{
+	if(mGLTexturep.notNull())
+	{
+		return mGLTexturep->getBoundRecently() ;
+	}
+	return FALSE ;
+}
+
+LLTexUnit::eTextureType LLGLTexture::getTarget(void) const
+{
+	llassert(mGLTexturep.notNull()) ;
+	return mGLTexturep->getTarget() ;
+}
+
+BOOL LLGLTexture::setSubImage(const LLImageRaw* imageraw, S32 x_pos, S32 y_pos, S32 width, S32 height)
+{
+	llassert(mGLTexturep.notNull()) ;
+
+	return mGLTexturep->setSubImage(imageraw, x_pos, y_pos, width, height) ;
+}
+
+BOOL LLGLTexture::setSubImage(const U8* datap, S32 data_width, S32 data_height, S32 x_pos, S32 y_pos, S32 width, S32 height)
+{
+	llassert(mGLTexturep.notNull()) ;
+
+	return mGLTexturep->setSubImage(datap, data_width, data_height, x_pos, y_pos, width, height) ;
+}
+
+void LLGLTexture::setGLTextureCreated (bool initialized)
+{
+	llassert(mGLTexturep.notNull()) ;
+
+	mGLTexturep->setGLTextureCreated (initialized) ;
+}
+
+void  LLGLTexture::setCategory(S32 category) 
+{
+	llassert(mGLTexturep.notNull()) ;
+
+	mGLTexturep->setCategory(category) ;
+}
+
+LLTexUnit::eTextureAddressMode LLGLTexture::getAddressMode(void) const
+{
+	llassert(mGLTexturep.notNull()) ;
+
+	return mGLTexturep->getAddressMode() ;
+}
+
+S32 LLGLTexture::getTextureMemory() const
+{
+	llassert(mGLTexturep.notNull()) ;
+
+	return mGLTexturep->mTextureMemory ;
+}
+
+LLGLenum LLGLTexture::getPrimaryFormat() const
+{
+	llassert(mGLTexturep.notNull()) ;
+
+	return mGLTexturep->getPrimaryFormat() ;
+}
+
+BOOL LLGLTexture::getIsAlphaMask() const
+{
+	llassert(mGLTexturep.notNull()) ;
+
+	return mGLTexturep->getIsAlphaMask() ;
+}
+
+BOOL LLGLTexture::getMask(const LLVector2 &tc)
+{
+	llassert(mGLTexturep.notNull()) ;
+
+	return mGLTexturep->getMask(tc) ;
+}
+
+F32 LLGLTexture::getTimePassedSinceLastBound()
+{
+	llassert(mGLTexturep.notNull()) ;
+
+	return mGLTexturep->getTimePassedSinceLastBound() ;
+}
+BOOL LLGLTexture::getMissed() const 
+{
+	llassert(mGLTexturep.notNull()) ;
+
+	return mGLTexturep->getMissed() ;
+}
+
+BOOL LLGLTexture::isJustBound() const
+{
+	llassert(mGLTexturep.notNull()) ;
+
+	return mGLTexturep->isJustBound() ;
+}
+
+void LLGLTexture::forceUpdateBindStats(void) const
+{
+	llassert(mGLTexturep.notNull()) ;
+
+	return mGLTexturep->forceUpdateBindStats() ;
+}
+
+U32 LLGLTexture::getTexelsInAtlas() const
+{
+	llassert(mGLTexturep.notNull()) ;
+
+	return mGLTexturep->getTexelsInAtlas() ;
+}
+
+U32 LLGLTexture::getTexelsInGLTexture() const
+{
+	llassert(mGLTexturep.notNull()) ;
+
+	return mGLTexturep->getTexelsInGLTexture() ;
+}
+
+BOOL LLGLTexture::isGLTextureCreated() const
+{
+	llassert(mGLTexturep.notNull()) ;
+
+	return mGLTexturep->isGLTextureCreated() ;
+}
+
+S32  LLGLTexture::getDiscardLevelInAtlas() const
+{
+	llassert(mGLTexturep.notNull()) ;
+
+	return mGLTexturep->getDiscardLevelInAtlas() ;
+}
+
+void LLGLTexture::destroyGLTexture() 
+{
+	if(mGLTexturep.notNull() && mGLTexturep->getHasGLTexture())
+	{
+		mGLTexturep->destroyGLTexture() ;
+		mTextureState = DELETED ;
+	}
+}
+
+void LLGLTexture::setTexelsPerImage()
+{
+	S32 fullwidth = llmin(mFullWidth,(S32)MAX_IMAGE_SIZE_DEFAULT);
+	S32 fullheight = llmin(mFullHeight,(S32)MAX_IMAGE_SIZE_DEFAULT);
+	mTexelsPerImage = (F32)fullwidth * fullheight;
+}
+
+
diff --git a/indra/llrender/llgltexture.h b/indra/llrender/llgltexture.h
new file mode 100644
index 0000000000..e69b322d60
--- /dev/null
+++ b/indra/llrender/llgltexture.h
@@ -0,0 +1,199 @@
+/** 
+ * @file llglviewertexture.h
+ * @brief Object for managing opengl textures
+ *
+ * $LicenseInfo:firstyear=2012&license=viewerlgpl$
+ * 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_GL_TEXTURE_H
+#define LL_GL_TEXTURE_H
+
+#include "lltexture.h"
+#include "llgl.h"
+
+class LLImageRaw;
+
+//
+//this the parent for the class LLViewerTexture
+//through the following virtual functions, the class LLViewerTexture can be reached from /llrender.
+//
+class LLGLTexture : public LLTexture
+{
+public:
+	enum
+	{
+		MAX_IMAGE_SIZE_DEFAULT = 1024,
+		INVALID_DISCARD_LEVEL = 0x7fff
+	};
+
+	enum EBoostLevel
+	{
+		BOOST_NONE 			= 0,
+		BOOST_AVATAR_BAKED	,
+		BOOST_AVATAR		,
+		BOOST_CLOUDS		,
+		BOOST_SCULPTED      ,
+		
+		BOOST_HIGH 			= 10,
+		BOOST_BUMP          ,
+		BOOST_TERRAIN		, // has to be high priority for minimap / low detail
+		BOOST_SELECTED		,		
+		BOOST_AVATAR_BAKED_SELF	,
+		BOOST_AVATAR_SELF	, // needed for baking avatar
+		BOOST_SUPER_HIGH    , //textures higher than this need to be downloaded at the required resolution without delay.
+		BOOST_HUD			,
+		BOOST_ICON			,
+		BOOST_UI			,
+		BOOST_PREVIEW		,
+		BOOST_MAP			,
+		BOOST_MAP_VISIBLE	,		
+		BOOST_MAX_LEVEL,
+
+		//other texture Categories
+		LOCAL = BOOST_MAX_LEVEL,
+		AVATAR_SCRATCH_TEX,
+		DYNAMIC_TEX,
+		MEDIA,
+		ATLAS,
+		OTHER,
+		MAX_GL_IMAGE_CATEGORY
+	};
+
+	typedef enum 
+	{
+		DELETED = 0,         //removed from memory
+		DELETION_CANDIDATE,  //ready to be removed from memory
+		INACTIVE,            //not be used for the last certain period (i.e., 30 seconds).
+		ACTIVE,              //just being used, can become inactive if not being used for a certain time (10 seconds).
+		NO_DELETE = 99       //stay in memory, can not be removed.
+	} LLGLTextureState;
+
+	static S32 getTotalNumOfCategories() ;
+	static S32 getIndexFromCategory(S32 category) ;
+	static S32 getCategoryFromIndex(S32 index) ;
+
+protected:
+	virtual ~LLGLTexture();
+	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) ;
+
+	virtual void dump();	// debug info to llinfos
+
+	virtual const LLUUID& getID() const = 0;
+
+	void setBoostLevel(S32 level);
+	S32  getBoostLevel() { return mBoostLevel; }
+
+	S32 getFullWidth() const { return mFullWidth; }
+	S32 getFullHeight() const { return mFullHeight; }	
+
+	void generateGLTexture() ;
+	void destroyGLTexture() ;
+
+	//---------------------------------------------------------------------------------------------
+	//functions to access LLImageGL
+	//---------------------------------------------------------------------------------------------
+	/*virtual*/S32	       getWidth(S32 discard_level = -1) const;
+	/*virtual*/S32	       getHeight(S32 discard_level = -1) const;
+
+	BOOL       hasGLTexture() const ;
+	LLGLuint   getTexName() const ;		
+	BOOL       createGLTexture() ;
+	BOOL       createGLTexture(S32 discard_level, const LLImageRaw* imageraw, S32 usename = 0, BOOL to_create = TRUE, S32 category = LLGLTexture::OTHER);
+
+	void       setFilteringOption(LLTexUnit::eTextureFilterOptions option);
+	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);
+	BOOL       setSubImage(const U8* datap, S32 data_width, S32 data_height, S32 x_pos, S32 y_pos, S32 width, S32 height);
+	void       setGLTextureCreated (bool initialized);
+	void       setCategory(S32 category) ;
+
+	LLTexUnit::eTextureAddressMode getAddressMode(void) const ;
+	S32        getMaxDiscardLevel() const;
+	S32        getDiscardLevel() const;
+	S8         getComponents() const;
+	BOOL       getBoundRecently() const;
+	S32        getTextureMemory() const ;
+	LLGLenum   getPrimaryFormat() const;
+	BOOL       getIsAlphaMask() const ;
+	LLTexUnit::eTextureType getTarget(void) const ;
+	BOOL       getMask(const LLVector2 &tc);
+	F32        getTimePassedSinceLastBound();
+	BOOL       getMissed() const ;
+	BOOL       isJustBound()const ;
+	void       forceUpdateBindStats(void) const;
+
+	U32        getTexelsInAtlas() const ;
+	U32        getTexelsInGLTexture() const ;
+	BOOL       isGLTextureCreated() const ;
+	S32        getDiscardLevelInAtlas() const ;
+	LLGLTextureState getTextureState() const { return mTextureState; }
+	
+	//---------------------------------------------------------------------------------------------
+	//end of functions to access LLImageGL
+	//---------------------------------------------------------------------------------------------
+
+	//-----------------
+	/*virtual*/ void setActive() ;
+	void forceActive() ;
+	void setNoDelete() ;
+	void dontDiscard() { mDontDiscard = 1; mTextureState = NO_DELETE; }
+	BOOL getDontDiscard() const { return mDontDiscard; }
+	//-----------------	
+
+private:
+	void cleanup();
+	void init();
+
+protected:
+	void setTexelsPerImage();
+
+	//note: do not make this function public.
+	/*virtual*/ LLImageGL* getGLTexture() const ;
+
+protected:
+	S32 mBoostLevel;				// enum describing priority level
+	S32 mFullWidth;
+	S32 mFullHeight;
+	BOOL mUseMipMaps;
+	S8  mComponents;
+	F32 mTexelsPerImage;			// Texels per image.
+	mutable S8  mNeedsGLTexture;
+
+	//GL texture
+	LLPointer<LLImageGL> mGLTexturep ;
+	S8 mDontDiscard;			// Keep full res version of this image (for UI, etc)
+
+protected:
+	LLGLTextureState  mTextureState ;
+
+
+};
+
+#endif // LL_GL_TEXTURE_H
+
diff --git a/indra/llrender/llimagegl.cpp b/indra/llrender/llimagegl.cpp
index ef2648ae98..28b7830b0e 100755
--- a/indra/llrender/llimagegl.cpp
+++ b/indra/llrender/llimagegl.cpp
@@ -74,6 +74,9 @@ S32 LLImageGL::sCurTexSizeBar = -1 ;
 S32 LLImageGL::sCurTexPickSize = -1 ;
 S32 LLImageGL::sMaxCategories = 1 ;
 
+//optimization for when we don't need to calculate mIsMask
+BOOL LLImageGL::sSkipAnalyzeAlpha;
+
 //------------------------
 //****************************************************************************************************
 //End for texture auditing use only
@@ -169,8 +172,9 @@ BOOL is_little_endian()
 	return (*c == 0x78) ;
 }
 //static 
-void LLImageGL::initClass(S32 num_catagories) 
+void LLImageGL::initClass(S32 num_catagories, BOOL skip_analyze_alpha /* = false */)
 {
+	sSkipAnalyzeAlpha = skip_analyze_alpha;
 }
 
 //static 
@@ -611,14 +615,16 @@ void LLImageGL::setImage(const LLImageRaw* imageraw)
 	setImage(rawdata, FALSE);
 }
 
+static LLFastTimer::DeclareTimer FTM_SET_IMAGE("setImage");
 void LLImageGL::setImage(const U8* data_in, BOOL data_hasmips)
 {
+	LLFastTimer t(FTM_SET_IMAGE);
 	bool is_compressed = false;
 	if (mFormatPrimary >= GL_COMPRESSED_RGBA_S3TC_DXT1_EXT && mFormatPrimary <= GL_COMPRESSED_RGBA_S3TC_DXT5_EXT)
 	{
 		is_compressed = true;
 	}
-
+	
 	
 	
 	if (mUseMipMaps)
@@ -746,8 +752,9 @@ void LLImageGL::setImage(const U8* data_in, BOOL data_hasmips)
 				S32 w = width, h = height;
 				const U8* prev_mip_data = 0;
 				const U8* cur_mip_data = 0;
-				S32 prev_mip_size = 0;
+#ifdef SHOW_ASSERT
 				S32 cur_mip_size = 0;
+#endif
 				
 				mMipLevels = nummips;
 
@@ -756,18 +763,24 @@ void LLImageGL::setImage(const U8* data_in, BOOL data_hasmips)
 					if (m==0)
 					{
 						cur_mip_data = data_in;
+#ifdef SHOW_ASSERT
 						cur_mip_size = width * height * mComponents; 
+#endif
 					}
 					else
 					{
 						S32 bytes = w * h * mComponents;
+#ifdef SHOW_ASSERT
 						llassert(prev_mip_data);
-						llassert(prev_mip_size == bytes*4);
+						llassert(cur_mip_size == bytes*4);
+#endif
 						U8* new_data = new U8[bytes];
 						llassert_always(new_data);
 						LLImageBase::generateMip(prev_mip_data, new_data, w, h, mComponents);
 						cur_mip_data = new_data;
+#ifdef SHOW_ASSERT
 						cur_mip_size = bytes; 
+#endif
 					}
 					llassert(w > 0 && h > 0 && cur_mip_data);
 					{
@@ -800,7 +813,6 @@ void LLImageGL::setImage(const U8* data_in, BOOL data_hasmips)
 						delete[] prev_mip_data;
 					}
 					prev_mip_data = cur_mip_data;
-					prev_mip_size = cur_mip_size;
 					w >>= 1;
 					h >>= 1;
 				}
@@ -1061,8 +1073,10 @@ BOOL LLImageGL::setSubImageFromFrameBuffer(S32 fb_x, S32 fb_y, S32 x_pos, S32 y_
 }
 
 // static
+static LLFastTimer::DeclareTimer FTM_GENERATE_TEXTURES("generate textures");
 void LLImageGL::generateTextures(LLTexUnit::eTextureType type, U32 format, S32 numTextures, U32 *textures)
 {
+	LLFastTimer t(FTM_GENERATE_TEXTURES);
 	bool empty = true;
 
 	if (LLRender::sGLCoreProfile)
@@ -1143,8 +1157,10 @@ void LLImageGL::deleteTextures(LLTexUnit::eTextureType type, U32 format, S32 mip
 }
 
 // static
+static LLFastTimer::DeclareTimer FTM_SET_MANUAL_IMAGE("setManualImage");
 void LLImageGL::setManualImage(U32 target, S32 miplevel, S32 intformat, S32 width, S32 height, U32 pixformat, U32 pixtype, const void *pixels, bool allow_compression)
 {
+	LLFastTimer t(FTM_SET_MANUAL_IMAGE);
 	bool use_scratch = false;
 	U32* scratch = NULL;
 	if (LLRender::sGLCoreProfile)
@@ -1248,9 +1264,10 @@ 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
+static LLFastTimer::DeclareTimer FTM_CREATE_GL_TEXTURE1("createGLTexture()");
 BOOL LLImageGL::createGLTexture()
 {
-	if (gHeadlessClient) return FALSE;
+	LLFastTimer t(FTM_CREATE_GL_TEXTURE1);
 	if (gGLManager.mIsDisabled)
 	{
 		llwarns << "Trying to create a texture while GL is disabled!" << llendl;
@@ -1278,9 +1295,10 @@ BOOL LLImageGL::createGLTexture()
 	return TRUE ;
 }
 
+static LLFastTimer::DeclareTimer FTM_CREATE_GL_TEXTURE2("createGLTexture(raw)");
 BOOL LLImageGL::createGLTexture(S32 discard_level, const LLImageRaw* imageraw, S32 usename/*=0*/, BOOL to_create, S32 category)
 {
-	if (gHeadlessClient) return FALSE;
+	LLFastTimer t(FTM_CREATE_GL_TEXTURE2);
 	if (gGLManager.mIsDisabled)
 	{
 		llwarns << "Trying to create a texture while GL is disabled!" << llendl;
@@ -1352,8 +1370,10 @@ BOOL LLImageGL::createGLTexture(S32 discard_level, const LLImageRaw* imageraw, S
 	return createGLTexture(discard_level, rawdata, FALSE, usename);
 }
 
+static LLFastTimer::DeclareTimer FTM_CREATE_GL_TEXTURE3("createGLTexture3(data)");
 BOOL LLImageGL::createGLTexture(S32 discard_level, const U8* data_in, BOOL data_hasmips, S32 usename)
 {
+	LLFastTimer t(FTM_CREATE_GL_TEXTURE3);
 	llassert(data_in);
 	stop_glerror();
 
@@ -1730,6 +1750,12 @@ BOOL LLImageGL::getBoundRecently() const
 	return (BOOL)(sLastFrameTime - mLastBindTime < MIN_TEXTURE_LIFETIME);
 }
 
+BOOL LLImageGL::getIsAlphaMask() const
+{
+	llassert_always(!sSkipAnalyzeAlpha);
+	return mIsMask;
+}
+
 void LLImageGL::setTarget(const LLGLenum target, const LLTexUnit::eTextureType bind_target)
 {
 	mTarget = target;
@@ -1827,7 +1853,7 @@ void LLImageGL::calcAlphaChannelOffsetAndStride()
 
 void LLImageGL::analyzeAlpha(const void* data_in, U32 w, U32 h)
 {
-	if(!mNeedsAlphaAndPickMask)
+	if(sSkipAnalyzeAlpha || !mNeedsAlphaAndPickMask)
 	{
 		return ;
 	}
diff --git a/indra/llrender/llimagegl.h b/indra/llrender/llimagegl.h
index cf3c484c79..57a052b258 100755
--- a/indra/llrender/llimagegl.h
+++ b/indra/llrender/llimagegl.h
@@ -142,7 +142,7 @@ public:
 	BOOL getHasGLTexture() const { return mTexName != 0; }
 	LLGLuint getTexName() const { return mTexName; }
 
-	BOOL getIsAlphaMask() const { return mIsMask; }
+	BOOL getIsAlphaMask() const;
 
 	BOOL getIsResident(BOOL test_now = FALSE); // not const
 
@@ -262,11 +262,12 @@ public:
 #endif
 
 public:
-	static void initClass(S32 num_catagories) ;
+	static void initClass(S32 num_catagories, BOOL skip_analyze_alpha = false); 
 	static void cleanupClass() ;
 
 private:
 	static S32 sMaxCategories;
+	static BOOL sSkipAnalyzeAlpha;
 	
 	//the flag to allow to call readBackRaw(...).
 	//can be removed if we do not use that function at all.
diff --git a/indra/llrender/llrender.cpp b/indra/llrender/llrender.cpp
index 14962fe58e..18ca5b35f0 100644
--- a/indra/llrender/llrender.cpp
+++ b/indra/llrender/llrender.cpp
@@ -367,7 +367,6 @@ bool LLTexUnit::bind(LLCubeMap* cubeMap)
 }
 
 // LLRenderTarget is unavailible on the mapserver since it uses FBOs.
-#if !LL_MESA_HEADLESS
 bool LLTexUnit::bind(LLRenderTarget* renderTarget, bool bindDepth)
 {
 	if (mIndex < 0) return false;
@@ -390,7 +389,6 @@ bool LLTexUnit::bind(LLRenderTarget* renderTarget, bool bindDepth)
 
 	return true;
 }
-#endif // LL_MESA_HEADLESS
 
 bool LLTexUnit::bindManual(eTextureType type, U32 texture, bool hasMips)
 {
diff --git a/indra/llrender/llrender2dutils.cpp b/indra/llrender/llrender2dutils.cpp
new file mode 100644
index 0000000000..d3cfbaf03a
--- /dev/null
+++ b/indra/llrender/llrender2dutils.cpp
@@ -0,0 +1,1608 @@
+/** 
+ * @file llrender2dutils.cpp
+ * @brief GL function implementations for immediate-mode gl drawing.
+ *
+ * $LicenseInfo:firstyear=2001&license=viewerlgpl$
+ * 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 "linden_common.h"
+
+// Linden library includes
+#include "v2math.h"
+#include "m3math.h"
+#include "v4color.h"
+#include "llfontgl.h"
+#include "llrender.h"
+#include "llrect.h"
+#include "llgl.h"
+#include "lltexture.h"
+
+// Project includes
+#include "llrender2dutils.h"
+#include "lluiimage.h"
+
+
+//
+// Globals
+//
+const LLColor4 UI_VERTEX_COLOR(1.f, 1.f, 1.f, 1.f);
+/*static*/ LLVector2		LLRender2D::sGLScaleFactor(1.f, 1.f);
+/*static*/ LLImageProviderInterface* LLRender2D::sImageProvider = NULL;
+
+//
+// Functions
+//
+
+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;
+}
+
+
+// Puts GL into 2D drawing mode by turning off lighting, setting to an
+// orthographic projection, etc.
+void gl_state_for_2d(S32 width, S32 height)
+{
+	stop_glerror();
+	F32 window_width = (F32) width;//gViewerWindow->getWindowWidth();
+	F32 window_height = (F32) height;//gViewerWindow->getWindowHeight();
+
+	gGL.matrixMode(LLRender::MM_PROJECTION);
+	gGL.loadIdentity();
+	gGL.ortho(0.0f, llmax(window_width, 1.f), 0.0f, llmax(window_height,1.f), -1.0f, 1.0f);
+	gGL.matrixMode(LLRender::MM_MODELVIEW);
+	gGL.loadIdentity();
+	stop_glerror();
+}
+
+
+void gl_draw_x(const LLRect& rect, const LLColor4& color)
+{
+	gGL.getTexUnit(0)->unbind(LLTexUnit::TT_TEXTURE);
+
+	gGL.color4fv( color.mV );
+
+	gGL.begin( LLRender::LINES );
+		gGL.vertex2i( rect.mLeft,		rect.mTop );
+		gGL.vertex2i( rect.mRight,	rect.mBottom );
+		gGL.vertex2i( rect.mLeft,		rect.mBottom );
+		gGL.vertex2i( rect.mRight,	rect.mTop );
+	gGL.end();
+}
+
+
+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)
+{
+	gGL.pushUIMatrix();
+	left += LLFontGL::sCurOrigin.mX;
+	right += LLFontGL::sCurOrigin.mX;
+	bottom += LLFontGL::sCurOrigin.mY;
+	top += LLFontGL::sCurOrigin.mY;
+
+	gGL.loadUIIdentity();
+	gl_rect_2d(llfloor((F32)left * LLRender2D::sGLScaleFactor.mV[VX]) - pixel_offset,
+				llfloor((F32)top * LLRender2D::sGLScaleFactor.mV[VY]) + pixel_offset,
+				llfloor((F32)right * LLRender2D::sGLScaleFactor.mV[VX]) + pixel_offset,
+				llfloor((F32)bottom * LLRender2D::sGLScaleFactor.mV[VY]) - pixel_offset,
+				filled);
+	gGL.popUIMatrix();
+}
+
+
+void gl_rect_2d(S32 left, S32 top, S32 right, S32 bottom, BOOL filled )
+{
+	stop_glerror();
+	gGL.getTexUnit(0)->unbind(LLTexUnit::TT_TEXTURE);
+
+	// Counterclockwise quad will face the viewer
+	if( filled )
+	{ 
+		gGL.begin( LLRender::QUADS );
+			gGL.vertex2i(left, top);
+			gGL.vertex2i(left, bottom);
+			gGL.vertex2i(right, bottom);
+			gGL.vertex2i(right, top);
+		gGL.end();
+	}
+	else
+	{
+		if( gGLManager.mATIOffsetVerticalLines )
+		{
+			// Work around bug in ATI driver: vertical lines are offset by (-1,-1)
+			gGL.begin( LLRender::LINES );
+
+				// Verticals 
+				gGL.vertex2i(left + 1, top);
+				gGL.vertex2i(left + 1, bottom);
+
+				gGL.vertex2i(right, bottom);
+				gGL.vertex2i(right, top);
+
+				// Horizontals
+				top--;
+				right--;
+				gGL.vertex2i(left, bottom);
+				gGL.vertex2i(right, bottom);
+
+				gGL.vertex2i(left, top);
+				gGL.vertex2i(right, top);
+			gGL.end();
+		}
+		else
+		{
+			top--;
+			right--;
+			gGL.begin( LLRender::LINE_STRIP );
+				gGL.vertex2i(left, top);
+				gGL.vertex2i(left, bottom);
+				gGL.vertex2i(right, bottom);
+				gGL.vertex2i(right, top);
+				gGL.vertex2i(left, top);
+			gGL.end();
+		}
+	}
+	stop_glerror();
+}
+
+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 )
+{
+	gGL.color4fv( color.mV );
+	gl_rect_2d( rect.mLeft, rect.mTop, rect.mRight, rect.mBottom, filled );
+}
+
+// Given a rectangle on the screen, draws a drop shadow _outside_
+// the right and bottom edges of it.  Along the right it has width "lines"
+// and along the bottom it has height "lines".
+void gl_drop_shadow(S32 left, S32 top, S32 right, S32 bottom, const LLColor4 &start_color, S32 lines)
+{
+	stop_glerror();
+	gGL.getTexUnit(0)->unbind(LLTexUnit::TT_TEXTURE);
+	
+	// HACK: Overlap with the rectangle by a single pixel.
+	right--;
+	bottom++;
+	lines++;
+
+	LLColor4 end_color = start_color;
+	end_color.mV[VALPHA] = 0.f;
+
+	gGL.begin(LLRender::QUADS);
+
+	// Right edge, CCW faces screen
+	gGL.color4fv(start_color.mV);
+	gGL.vertex2i(right,		top-lines);
+	gGL.vertex2i(right,		bottom);
+	gGL.color4fv(end_color.mV);
+	gGL.vertex2i(right+lines, bottom);
+	gGL.vertex2i(right+lines, top-lines);
+
+	// Bottom edge, CCW faces screen
+	gGL.color4fv(start_color.mV);
+	gGL.vertex2i(right,		bottom);
+	gGL.vertex2i(left+lines,	bottom);
+	gGL.color4fv(end_color.mV);
+	gGL.vertex2i(left+lines,	bottom-lines);
+	gGL.vertex2i(right,		bottom-lines);
+
+	// bottom left Corner
+	gGL.color4fv(start_color.mV);
+	gGL.vertex2i(left+lines,	bottom);
+	gGL.color4fv(end_color.mV);
+	gGL.vertex2i(left,		bottom);
+	// make the bottom left corner not sharp
+	gGL.vertex2i(left+1,		bottom-lines+1);
+	gGL.vertex2i(left+lines,	bottom-lines);
+
+	// bottom right corner
+	gGL.color4fv(start_color.mV);
+	gGL.vertex2i(right,		bottom);
+	gGL.color4fv(end_color.mV);
+	gGL.vertex2i(right,		bottom-lines);
+	// make the rightmost corner not sharp
+	gGL.vertex2i(right+lines-1,	bottom-lines+1);
+	gGL.vertex2i(right+lines,	bottom);
+
+	// top right corner
+	gGL.color4fv(start_color.mV);
+	gGL.vertex2i( right,			top-lines );
+	gGL.color4fv(end_color.mV);
+	gGL.vertex2i( right+lines,	top-lines );
+	// make the corner not sharp
+	gGL.vertex2i( right+lines-1,	top-1 );
+	gGL.vertex2i( right,			top );
+
+	gGL.end();
+	stop_glerror();
+}
+
+void gl_line_2d(S32 x1, S32 y1, S32 x2, S32 y2 )
+{
+	// Work around bug in ATI driver: vertical lines are offset by (-1,-1)
+	if( (x1 == x2) && gGLManager.mATIOffsetVerticalLines )
+	{
+		x1++;
+		x2++;
+		y1++;
+		y2++;
+	}
+
+	gGL.getTexUnit(0)->unbind(LLTexUnit::TT_TEXTURE);
+	
+	gGL.begin(LLRender::LINES);
+		gGL.vertex2i(x1, y1);
+		gGL.vertex2i(x2, y2);
+	gGL.end();
+}
+
+void gl_line_2d(S32 x1, S32 y1, S32 x2, S32 y2, const LLColor4 &color )
+{
+	// Work around bug in ATI driver: vertical lines are offset by (-1,-1)
+	if( (x1 == x2) && gGLManager.mATIOffsetVerticalLines )
+	{
+		x1++;
+		x2++;
+		y1++;
+		y2++;
+	}
+
+	gGL.getTexUnit(0)->unbind(LLTexUnit::TT_TEXTURE);
+
+	gGL.color4fv( color.mV );
+
+	gGL.begin(LLRender::LINES);
+		gGL.vertex2i(x1, y1);
+		gGL.vertex2i(x2, y2);
+	gGL.end();
+}
+
+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);
+
+	gGL.color4fv(color.mV);
+
+	if (filled)
+	{
+		gGL.begin(LLRender::TRIANGLES);
+	}
+	else
+	{
+		gGL.begin(LLRender::LINE_LOOP);
+	}
+	gGL.vertex2i(x1, y1);
+	gGL.vertex2i(x2, y2);
+	gGL.vertex2i(x3, y3);
+	gGL.end();
+}
+
+void gl_corners_2d(S32 left, S32 top, S32 right, S32 bottom, S32 length, F32 max_frac)
+{
+	gGL.getTexUnit(0)->unbind(LLTexUnit::TT_TEXTURE);
+
+	length = llmin((S32)(max_frac*(right - left)), length);
+	length = llmin((S32)(max_frac*(top - bottom)), length);
+	gGL.begin(LLRender::LINES);
+	gGL.vertex2i(left, top);
+	gGL.vertex2i(left + length, top);
+	
+	gGL.vertex2i(left, top);
+	gGL.vertex2i(left, top - length);
+
+	gGL.vertex2i(left, bottom);
+	gGL.vertex2i(left + length, bottom);
+	
+	gGL.vertex2i(left, bottom);
+	gGL.vertex2i(left, bottom + length);
+
+	gGL.vertex2i(right, top);
+	gGL.vertex2i(right - length, top);
+
+	gGL.vertex2i(right, top);
+	gGL.vertex2i(right, top - length);
+
+	gGL.vertex2i(right, bottom);
+	gGL.vertex2i(right - length, bottom);
+
+	gGL.vertex2i(right, bottom);
+	gGL.vertex2i(right, bottom + length);
+	gGL.end();
+}
+
+
+void gl_draw_image( S32 x, S32 y, LLTexture* image, const LLColor4& color, const LLRectf& uv_rect )
+{
+	if (NULL == image)
+	{
+		llwarns << "image == NULL; aborting function" << llendl;
+		return;
+	}
+	gl_draw_scaled_rotated_image( x, y, image->getWidth(0), image->getHeight(0), 0.f, image, color, uv_rect );
+}
+
+void gl_draw_scaled_image(S32 x, S32 y, S32 width, S32 height, LLTexture* image, const LLColor4& color, const LLRectf& uv_rect)
+{
+	if (NULL == image)
+	{
+		llwarns << "image == NULL; aborting function" << llendl;
+		return;
+	}
+	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)
+{
+	if (NULL == image)
+	{
+		llwarns << "image == NULL; aborting function" << llendl;
+		return;
+	}
+
+	// scale screen size of borders down
+	F32 border_width_fraction = (F32)border_width / (F32)image->getWidth(0);
+	F32 border_height_fraction = (F32)border_height / (F32)image->getHeight(0);
+
+	LLRectf scale_rect(border_width_fraction, 1.f - border_height_fraction, 1.f - border_width_fraction, border_height_fraction);
+	gl_draw_scaled_image_with_border(x, y, width, height, image, color, solid_color, uv_rect, scale_rect);
+}
+
+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)
+{
+	stop_glerror();
+
+	if (NULL == image)
+	{
+		llwarns << "image == NULL; aborting function" << llendl;
+		return;
+	}
+
+	// add in offset of current image to current UI translation
+	const LLVector3 ui_scale = gGL.getUIScale();
+	const LLVector3 ui_translation = (gGL.getUITranslation() + LLVector3(x, y, 0.f)).scaledVec(ui_scale);
+
+	F32 uv_width = uv_outer_rect.getWidth();
+	F32 uv_height = uv_outer_rect.getHeight();
+
+	// shrink scaling region to be proportional to clipped image region
+	LLRectf uv_center_rect(
+		uv_outer_rect.mLeft + (center_rect.mLeft * uv_width),
+		uv_outer_rect.mBottom + (center_rect.mTop * uv_height),
+		uv_outer_rect.mLeft + (center_rect.mRight * uv_width),
+		uv_outer_rect.mBottom + (center_rect.mBottom * uv_height));
+
+	F32 image_width = image->getWidth(0);
+	F32 image_height = image->getHeight(0);
+
+	S32 image_natural_width = llround(image_width * uv_width);
+	S32 image_natural_height = llround(image_height * uv_height);
+
+	LLRectf draw_center_rect(	uv_center_rect.mLeft * image_width,
+								uv_center_rect.mTop * image_height,
+								uv_center_rect.mRight * image_width,
+								uv_center_rect.mBottom * image_height);
+
+	{	// scale fixed region of image to drawn region
+		draw_center_rect.mRight += width - image_natural_width;
+		draw_center_rect.mTop += height - image_natural_height;
+
+		F32 border_shrink_width = llmax(0.f, draw_center_rect.mLeft - draw_center_rect.mRight);
+		F32 border_shrink_height = llmax(0.f, draw_center_rect.mBottom - draw_center_rect.mTop);
+
+		F32 shrink_width_ratio = center_rect.getWidth() == 1.f ? 0.f : border_shrink_width / ((F32)image_natural_width * (1.f - center_rect.getWidth()));
+		F32 shrink_height_ratio = center_rect.getHeight() == 1.f ? 0.f : border_shrink_height / ((F32)image_natural_height * (1.f - center_rect.getHeight()));
+
+		F32 shrink_scale = 1.f - llmax(shrink_width_ratio, shrink_height_ratio);
+
+		draw_center_rect.mLeft = llround(ui_translation.mV[VX] + (F32)draw_center_rect.mLeft * shrink_scale * ui_scale.mV[VX]);
+		draw_center_rect.mTop = llround(ui_translation.mV[VY] + lerp((F32)height, (F32)draw_center_rect.mTop, shrink_scale) * ui_scale.mV[VY]);
+		draw_center_rect.mRight = llround(ui_translation.mV[VX] + lerp((F32)width, (F32)draw_center_rect.mRight, shrink_scale) * ui_scale.mV[VX]);
+		draw_center_rect.mBottom = llround(ui_translation.mV[VY] + (F32)draw_center_rect.mBottom * shrink_scale * ui_scale.mV[VY]);
+	}
+
+	LLRectf draw_outer_rect(ui_translation.mV[VX], 
+							ui_translation.mV[VY] + height * ui_scale.mV[VY], 
+							ui_translation.mV[VX] + width * ui_scale.mV[VX], 
+							ui_translation.mV[VY]);
+
+	LLGLSUIDefault gls_ui;
+	
+	if (solid_color)
+	{
+		if (LLGLSLShader::sNoFixedFunction)
+		{
+			gSolidColorProgram.bind();
+		}
+		else
+		{
+			gGL.getTexUnit(0)->setTextureColorBlend(LLTexUnit::TBO_REPLACE, LLTexUnit::TBS_PREV_COLOR);
+			gGL.getTexUnit(0)->setTextureAlphaBlend(LLTexUnit::TBO_MULT, LLTexUnit::TBS_TEX_ALPHA, LLTexUnit::TBS_VERT_ALPHA);
+		}
+	}
+
+	gGL.getTexUnit(0)->bind(image, true);
+
+	gGL.color4fv(color.mV);
+	
+	const S32 NUM_VERTICES = 9 * 4; // 9 quads
+	LLVector2 uv[NUM_VERTICES];
+	LLVector3 pos[NUM_VERTICES];
+
+	S32 index = 0;
+
+	gGL.begin(LLRender::QUADS);
+	{
+		// draw bottom left
+		uv[index] = LLVector2(uv_outer_rect.mLeft, uv_outer_rect.mBottom);
+		pos[index] = LLVector3(draw_outer_rect.mLeft, draw_outer_rect.mBottom, 0.f);
+		index++;
+
+		uv[index] = LLVector2(uv_center_rect.mLeft, uv_outer_rect.mBottom);
+		pos[index] = LLVector3(draw_center_rect.mLeft, draw_outer_rect.mBottom, 0.f);
+		index++;
+
+		uv[index] = LLVector2(uv_center_rect.mLeft, uv_center_rect.mBottom);
+		pos[index] = LLVector3(draw_center_rect.mLeft, draw_center_rect.mBottom, 0.f);
+		index++;
+
+		uv[index] = LLVector2(uv_outer_rect.mLeft, uv_center_rect.mBottom);
+		pos[index] = LLVector3(draw_outer_rect.mLeft, draw_center_rect.mBottom, 0.f);
+		index++;
+
+		// draw bottom middle
+		uv[index] = LLVector2(uv_center_rect.mLeft, uv_outer_rect.mBottom);
+		pos[index] = LLVector3(draw_center_rect.mLeft, draw_outer_rect.mBottom, 0.f);
+		index++;
+
+		uv[index] = LLVector2(uv_center_rect.mRight, uv_outer_rect.mBottom);
+		pos[index] = LLVector3(draw_center_rect.mRight, draw_outer_rect.mBottom, 0.f);
+		index++;
+
+		uv[index] = LLVector2(uv_center_rect.mRight, uv_center_rect.mBottom);
+		pos[index] = LLVector3(draw_center_rect.mRight, draw_center_rect.mBottom, 0.f);
+		index++;
+
+		uv[index] = LLVector2(uv_center_rect.mLeft, uv_center_rect.mBottom);
+		pos[index] = LLVector3(draw_center_rect.mLeft, draw_center_rect.mBottom, 0.f);
+		index++;
+
+		// draw bottom right
+		uv[index] = LLVector2(uv_center_rect.mRight, uv_outer_rect.mBottom);
+		pos[index] = LLVector3(draw_center_rect.mRight, draw_outer_rect.mBottom, 0.f);
+		index++;
+
+		uv[index] = LLVector2(uv_outer_rect.mRight, uv_outer_rect.mBottom);
+		pos[index] = LLVector3(draw_outer_rect.mRight, draw_outer_rect.mBottom, 0.f);
+		index++;
+
+		uv[index] = LLVector2(uv_outer_rect.mRight, uv_center_rect.mBottom);
+		pos[index] = LLVector3(draw_outer_rect.mRight, draw_center_rect.mBottom, 0.f);
+		index++;
+
+		uv[index] = LLVector2(uv_center_rect.mRight, uv_center_rect.mBottom);
+		pos[index] = LLVector3(draw_center_rect.mRight, draw_center_rect.mBottom, 0.f);
+		index++;
+
+		// draw left 
+		uv[index] = LLVector2(uv_outer_rect.mLeft, uv_center_rect.mBottom);
+		pos[index] = LLVector3(draw_outer_rect.mLeft, draw_center_rect.mBottom, 0.f);
+		index++;
+
+		uv[index] = LLVector2(uv_center_rect.mLeft, uv_center_rect.mBottom);
+		pos[index] = LLVector3(draw_center_rect.mLeft, draw_center_rect.mBottom, 0.f);
+		index++;
+
+		uv[index] = LLVector2(uv_center_rect.mLeft, uv_center_rect.mTop);
+		pos[index] = LLVector3(draw_center_rect.mLeft, draw_center_rect.mTop, 0.f);
+		index++;
+
+		uv[index] = LLVector2(uv_outer_rect.mLeft, uv_center_rect.mTop);
+		pos[index] = LLVector3(draw_outer_rect.mLeft, draw_center_rect.mTop, 0.f);
+		index++;
+
+		// draw middle
+		uv[index] = LLVector2(uv_center_rect.mLeft, uv_center_rect.mBottom);
+		pos[index] = LLVector3(draw_center_rect.mLeft, draw_center_rect.mBottom, 0.f);
+		index++;
+
+		uv[index] = LLVector2(uv_center_rect.mRight, uv_center_rect.mBottom);
+		pos[index] = LLVector3(draw_center_rect.mRight, draw_center_rect.mBottom, 0.f);
+		index++;
+
+		uv[index] = LLVector2(uv_center_rect.mRight, uv_center_rect.mTop);
+		pos[index] = LLVector3(draw_center_rect.mRight, draw_center_rect.mTop, 0.f);
+		index++;
+
+		uv[index] = LLVector2(uv_center_rect.mLeft, uv_center_rect.mTop);
+		pos[index] = LLVector3(draw_center_rect.mLeft, draw_center_rect.mTop, 0.f);
+		index++;
+
+		// draw right 
+		uv[index] = LLVector2(uv_center_rect.mRight, uv_center_rect.mBottom);
+		pos[index] = LLVector3(draw_center_rect.mRight, draw_center_rect.mBottom, 0.f);
+		index++;
+
+		uv[index] = LLVector2(uv_outer_rect.mRight, uv_center_rect.mBottom);
+		pos[index] = LLVector3(draw_outer_rect.mRight, draw_center_rect.mBottom, 0.f);
+		index++;
+
+		uv[index] = LLVector2(uv_outer_rect.mRight, uv_center_rect.mTop);
+		pos[index] = LLVector3(draw_outer_rect.mRight, draw_center_rect.mTop, 0.f);
+		index++;
+
+		uv[index] = LLVector2(uv_center_rect.mRight, uv_center_rect.mTop);
+		pos[index] = LLVector3(draw_center_rect.mRight, draw_center_rect.mTop, 0.f);
+		index++;
+
+		// draw top left
+		uv[index] = LLVector2(uv_outer_rect.mLeft, uv_center_rect.mTop);
+		pos[index] = LLVector3(draw_outer_rect.mLeft, draw_center_rect.mTop, 0.f);
+		index++;
+
+		uv[index] = LLVector2(uv_center_rect.mLeft, uv_center_rect.mTop);
+		pos[index] = LLVector3(draw_center_rect.mLeft, draw_center_rect.mTop, 0.f);
+		index++;
+
+		uv[index] = LLVector2(uv_center_rect.mLeft, uv_outer_rect.mTop);
+		pos[index] = LLVector3(draw_center_rect.mLeft, draw_outer_rect.mTop, 0.f);
+		index++;
+
+		uv[index] = LLVector2(uv_outer_rect.mLeft, uv_outer_rect.mTop);
+		pos[index] = LLVector3(draw_outer_rect.mLeft, draw_outer_rect.mTop, 0.f);
+		index++;
+
+		// draw top middle
+		uv[index] = LLVector2(uv_center_rect.mLeft, uv_center_rect.mTop);
+		pos[index] = LLVector3(draw_center_rect.mLeft, draw_center_rect.mTop, 0.f);
+		index++;
+
+		uv[index] = LLVector2(uv_center_rect.mRight, uv_center_rect.mTop);
+		pos[index] = LLVector3(draw_center_rect.mRight, draw_center_rect.mTop, 0.f);
+		index++;
+
+		uv[index] = LLVector2(uv_center_rect.mRight, uv_outer_rect.mTop);
+		pos[index] = LLVector3(draw_center_rect.mRight, draw_outer_rect.mTop, 0.f);
+		index++;
+
+		uv[index] = LLVector2(uv_center_rect.mLeft, uv_outer_rect.mTop);
+		pos[index] = LLVector3(draw_center_rect.mLeft, draw_outer_rect.mTop, 0.f);
+		index++;
+
+		// draw top right
+		uv[index] = LLVector2(uv_center_rect.mRight, uv_center_rect.mTop);
+		pos[index] = LLVector3(draw_center_rect.mRight, draw_center_rect.mTop, 0.f);
+		index++;
+
+		uv[index] = LLVector2(uv_outer_rect.mRight, uv_center_rect.mTop);
+		pos[index] = LLVector3(draw_outer_rect.mRight, draw_center_rect.mTop, 0.f);
+		index++;
+
+		uv[index] = LLVector2(uv_outer_rect.mRight, uv_outer_rect.mTop);
+		pos[index] = LLVector3(draw_outer_rect.mRight, draw_outer_rect.mTop, 0.f);
+		index++;
+
+		uv[index] = LLVector2(uv_center_rect.mRight, uv_outer_rect.mTop);
+		pos[index] = LLVector3(draw_center_rect.mRight, draw_outer_rect.mTop, 0.f);
+		index++;
+
+		gGL.vertexBatchPreTransformed(pos, uv, NUM_VERTICES);
+	}
+	gGL.end();
+
+	if (solid_color)
+	{
+		if (LLGLSLShader::sNoFixedFunction)
+		{
+			gUIProgram.bind();
+		}
+		else
+		{
+			gGL.getTexUnit(0)->setTextureBlendType(LLTexUnit::TB_MULT);
+		}
+	}
+}
+
+void gl_draw_rotated_image(S32 x, S32 y, F32 degrees, LLTexture* image, const LLColor4& color, const LLRectf& uv_rect)
+{
+	gl_draw_scaled_rotated_image( x, y, image->getWidth(0), image->getHeight(0), degrees, image, color, uv_rect );
+}
+
+void gl_draw_scaled_rotated_image(S32 x, S32 y, S32 width, S32 height, F32 degrees, LLTexture* image, const LLColor4& color, const LLRectf& uv_rect)
+{
+	if (NULL == image)
+	{
+		llwarns << "image == NULL; aborting function" << llendl;
+		return;
+	}
+
+	LLGLSUIDefault gls_ui;
+
+
+	gGL.getTexUnit(0)->bind(image, true);
+
+	gGL.color4fv(color.mV);
+
+	if (degrees == 0.f)
+	{
+		const S32 NUM_VERTICES = 4; // 9 quads
+		LLVector2 uv[NUM_VERTICES];
+		LLVector3 pos[NUM_VERTICES];
+
+		gGL.begin(LLRender::QUADS);
+		{
+			LLVector3 ui_scale = gGL.getUIScale();
+			LLVector3 ui_translation = gGL.getUITranslation();
+			ui_translation.mV[VX] += x;
+			ui_translation.mV[VY] += y;
+			ui_translation.scaleVec(ui_scale);
+			S32 index = 0;
+			S32 scaled_width = llround(width * ui_scale.mV[VX]);
+			S32 scaled_height = llround(height * ui_scale.mV[VY]);
+
+			uv[index] = LLVector2(uv_rect.mRight, uv_rect.mTop);
+			pos[index] = LLVector3(ui_translation.mV[VX] + scaled_width, ui_translation.mV[VY] + scaled_height, 0.f);
+			index++;
+
+			uv[index] = LLVector2(uv_rect.mLeft, uv_rect.mTop);
+			pos[index] = LLVector3(ui_translation.mV[VX], ui_translation.mV[VY] + scaled_height, 0.f);
+			index++;
+
+			uv[index] = LLVector2(uv_rect.mLeft, uv_rect.mBottom);
+			pos[index] = LLVector3(ui_translation.mV[VX], ui_translation.mV[VY], 0.f);
+			index++;
+
+			uv[index] = LLVector2(uv_rect.mRight, uv_rect.mBottom);
+			pos[index] = LLVector3(ui_translation.mV[VX] + scaled_width, ui_translation.mV[VY], 0.f);
+			index++;
+
+			gGL.vertexBatchPreTransformed(pos, uv, NUM_VERTICES);
+		}
+		gGL.end();
+	}
+	else
+	{
+		gGL.pushUIMatrix();
+		gGL.translateUI((F32)x, (F32)y, 0.f);
+	
+		F32 offset_x = F32(width/2);
+		F32 offset_y = F32(height/2);
+
+		gGL.translateUI(offset_x, offset_y, 0.f);
+
+		LLMatrix3 quat(0.f, 0.f, degrees*DEG_TO_RAD);
+		
+		gGL.getTexUnit(0)->bind(image, true);
+
+		gGL.color4fv(color.mV);
+		
+		gGL.begin(LLRender::QUADS);
+		{
+			LLVector3 v;
+
+			v = LLVector3(offset_x, offset_y, 0.f) * quat;
+			gGL.texCoord2f(uv_rect.mRight, uv_rect.mTop);
+			gGL.vertex2f(v.mV[0], v.mV[1] );
+
+			v = LLVector3(-offset_x, offset_y, 0.f) * quat;
+			gGL.texCoord2f(uv_rect.mLeft, uv_rect.mTop);
+			gGL.vertex2f(v.mV[0], v.mV[1] );
+
+			v = LLVector3(-offset_x, -offset_y, 0.f) * quat;
+			gGL.texCoord2f(uv_rect.mLeft, uv_rect.mBottom);
+			gGL.vertex2f(v.mV[0], v.mV[1] );
+
+			v = LLVector3(offset_x, -offset_y, 0.f) * quat;
+			gGL.texCoord2f(uv_rect.mRight, uv_rect.mBottom);
+			gGL.vertex2f(v.mV[0], v.mV[1] );
+		}
+		gGL.end();
+		gGL.popUIMatrix();
+	}
+}
+
+
+void gl_stippled_line_3d( const LLVector3& start, const LLVector3& end, const LLColor4& color, F32 phase )
+{
+	phase = fmod(phase, 1.f);
+
+	S32 shift = S32(phase * 4.f) % 4;
+
+	// Stippled line
+	LLGLEnable stipple(GL_LINE_STIPPLE);
+	
+	gGL.color4f(color.mV[VRED], color.mV[VGREEN], color.mV[VBLUE], color.mV[VALPHA]);
+
+	gGL.flush();
+	glLineWidth(2.5f);
+
+	if (!LLGLSLShader::sNoFixedFunction)
+	{
+		glLineStipple(2, 0x3333 << shift);
+	}
+
+	gGL.begin(LLRender::LINES);
+	{
+		gGL.vertex3fv( start.mV );
+		gGL.vertex3fv( end.mV );
+	}
+	gGL.end();
+
+	LLRender2D::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)
+{
+	if (end_angle < start_angle)
+	{
+		end_angle += F_TWO_PI;
+	}
+
+	gGL.pushUIMatrix();
+	{
+		gGL.translateUI(center_x, center_y, 0.f);
+
+		// Inexact, but reasonably fast.
+		F32 delta = (end_angle - start_angle) / steps;
+		F32 sin_delta = sin( delta );
+		F32 cos_delta = cos( delta );
+		F32 x = cosf(start_angle) * radius;
+		F32 y = sinf(start_angle) * radius;
+
+		if (filled)
+		{
+			gGL.begin(LLRender::TRIANGLE_FAN);
+			gGL.vertex2f(0.f, 0.f);
+			// make sure circle is complete
+			steps += 1;
+		}
+		else
+		{
+			gGL.begin(LLRender::LINE_STRIP);
+		}
+
+		while( steps-- )
+		{
+			// Successive rotations
+			gGL.vertex2f( x, y );
+			F32 x_new = x * cos_delta - y * sin_delta;
+			y = x * sin_delta +  y * cos_delta;
+			x = x_new;
+		}
+		gGL.end();
+	}
+	gGL.popUIMatrix();
+}
+
+void gl_circle_2d(F32 center_x, F32 center_y, F32 radius, S32 steps, BOOL filled)
+{
+	gGL.pushUIMatrix();
+	{
+		gGL.getTexUnit(0)->unbind(LLTexUnit::TT_TEXTURE);
+		gGL.translateUI(center_x, center_y, 0.f);
+
+		// Inexact, but reasonably fast.
+		F32 delta = F_TWO_PI / steps;
+		F32 sin_delta = sin( delta );
+		F32 cos_delta = cos( delta );
+		F32 x = radius;
+		F32 y = 0.f;
+
+		if (filled)
+		{
+			gGL.begin(LLRender::TRIANGLE_FAN);
+			gGL.vertex2f(0.f, 0.f);
+			// make sure circle is complete
+			steps += 1;
+		}
+		else
+		{
+			gGL.begin(LLRender::LINE_LOOP);
+		}
+
+		while( steps-- )
+		{
+			// Successive rotations
+			gGL.vertex2f( x, y );
+			F32 x_new = x * cos_delta - y * sin_delta;
+			y = x * sin_delta +  y * cos_delta;
+			x = x_new;
+		}
+		gGL.end();
+	}
+	gGL.popUIMatrix();
+}
+
+// Renders a ring with sides (tube shape)
+void gl_deep_circle( F32 radius, F32 depth, S32 steps )
+{
+	F32 x = radius;
+	F32 y = 0.f;
+	F32 angle_delta = F_TWO_PI / (F32)steps;
+	gGL.begin( LLRender::TRIANGLE_STRIP  );
+	{
+		S32 step = steps + 1; // An extra step to close the circle.
+		while( step-- )
+		{
+			gGL.vertex3f( x, y, depth );
+			gGL.vertex3f( x, y, 0.f );
+
+			F32 x_new = x * cosf(angle_delta) - y * sinf(angle_delta);
+			y = x * sinf(angle_delta) +  y * cosf(angle_delta);
+			x = x_new;
+		}
+	}
+	gGL.end();
+}
+
+void gl_ring( F32 radius, F32 width, const LLColor4& center_color, const LLColor4& side_color, S32 steps, BOOL render_center )
+{
+	gGL.pushUIMatrix();
+	{
+		gGL.translateUI(0.f, 0.f, -width / 2);
+		if( render_center )
+		{
+			gGL.color4fv(center_color.mV);
+			gGL.diffuseColor4fv(center_color.mV);
+			gl_deep_circle( radius, width, steps );
+		}
+		else
+		{
+			gGL.diffuseColor4fv(side_color.mV);
+			gl_washer_2d(radius, radius - width, steps, side_color, side_color);
+			gGL.translateUI(0.f, 0.f, width);
+			gl_washer_2d(radius - width, radius, steps, side_color, side_color);
+		}
+	}
+	gGL.popUIMatrix();
+}
+
+// Draw gray and white checkerboard with black border
+void gl_rect_2d_checkerboard(const LLRect& rect, GLfloat alpha)
+{
+	if (!LLGLSLShader::sNoFixedFunction)
+	{ 
+	// Initialize the first time this is called.
+	const S32 PIXELS = 32;
+	static GLubyte checkerboard[PIXELS * PIXELS];
+	static BOOL first = TRUE;
+	if( first )
+	{
+		for( S32 i = 0; i < PIXELS; i++ )
+		{
+			for( S32 j = 0; j < PIXELS; j++ )
+			{
+				checkerboard[i * PIXELS + j] = ((i & 1) ^ (j & 1)) * 0xFF;
+			}
+		}
+		first = FALSE;
+	}
+	
+	gGL.getTexUnit(0)->unbind(LLTexUnit::TT_TEXTURE);
+
+	// ...white squares
+	gGL.color4f( 1.f, 1.f, 1.f, alpha );
+	gl_rect_2d(rect);
+
+	// ...gray squares
+	gGL.color4f( .7f, .7f, .7f, alpha );
+	gGL.flush();
+
+		glPolygonStipple( checkerboard );
+
+		LLGLEnable polygon_stipple(GL_POLYGON_STIPPLE);
+		gl_rect_2d(rect);
+	}
+	else
+	{ //polygon stipple is deprecated, use "Checker" texture
+		LLPointer<LLUIImage> img = LLRender2D::getUIImage("Checker");
+		gGL.getTexUnit(0)->bind(img->getImage());
+		gGL.getTexUnit(0)->setTextureAddressMode(LLTexUnit::TAM_WRAP);
+		gGL.getTexUnit(0)->setTextureFilteringOption(LLTexUnit::TFO_POINT);
+
+		LLColor4 color(1.f, 1.f, 1.f, alpha);
+		LLRectf uv_rect(0, 0, rect.getWidth()/32.f, rect.getHeight()/32.f);
+
+		gl_draw_scaled_image(rect.mLeft, rect.mBottom, rect.getWidth(), rect.getHeight(),
+			img->getImage(), color, uv_rect);
+	}
+	
+	gGL.flush();
+}
+
+
+// Draws the area between two concentric circles, like
+// a doughnut or washer.
+void gl_washer_2d(F32 outer_radius, F32 inner_radius, S32 steps, const LLColor4& inner_color, const LLColor4& outer_color)
+{
+	const F32 DELTA = F_TWO_PI / steps;
+	const F32 SIN_DELTA = sin( DELTA );
+	const F32 COS_DELTA = cos( DELTA );
+
+	F32 x1 = outer_radius;
+	F32 y1 = 0.f;
+	F32 x2 = inner_radius;
+	F32 y2 = 0.f;
+
+	gGL.getTexUnit(0)->unbind(LLTexUnit::TT_TEXTURE);
+
+	gGL.begin( LLRender::TRIANGLE_STRIP  );
+	{
+		steps += 1; // An extra step to close the circle.
+		while( steps-- )
+		{
+			gGL.color4fv(outer_color.mV);
+			gGL.vertex2f( x1, y1 );
+			gGL.color4fv(inner_color.mV);
+			gGL.vertex2f( x2, y2 );
+
+			F32 x1_new = x1 * COS_DELTA - y1 * SIN_DELTA;
+			y1 = x1 * SIN_DELTA +  y1 * COS_DELTA;
+			x1 = x1_new;
+
+			F32 x2_new = x2 * COS_DELTA - y2 * SIN_DELTA;
+			y2 = x2 * SIN_DELTA +  y2 * COS_DELTA;
+			x2 = x2_new;
+		}
+	}
+	gGL.end();
+}
+
+// Draws the area between two concentric circles, like
+// a doughnut or washer.
+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)
+{
+	const F32 DELTA = (end_radians - start_radians) / steps;
+	const F32 SIN_DELTA = sin( DELTA );
+	const F32 COS_DELTA = cos( DELTA );
+
+	F32 x1 = outer_radius * cos( start_radians );
+	F32 y1 = outer_radius * sin( start_radians );
+	F32 x2 = inner_radius * cos( start_radians );
+	F32 y2 = inner_radius * sin( start_radians );
+
+	gGL.getTexUnit(0)->unbind(LLTexUnit::TT_TEXTURE);
+	gGL.begin( LLRender::TRIANGLE_STRIP  );
+	{
+		steps += 1; // An extra step to close the circle.
+		while( steps-- )
+		{
+			gGL.color4fv(outer_color.mV);
+			gGL.vertex2f( x1, y1 );
+			gGL.color4fv(inner_color.mV);
+			gGL.vertex2f( x2, y2 );
+
+			F32 x1_new = x1 * COS_DELTA - y1 * SIN_DELTA;
+			y1 = x1 * SIN_DELTA +  y1 * COS_DELTA;
+			x1 = x1_new;
+
+			F32 x2_new = x2 * COS_DELTA - y2 * SIN_DELTA;
+			y2 = x2 * SIN_DELTA +  y2 * COS_DELTA;
+			x2 = x2_new;
+		}
+	}
+	gGL.end();
+}
+
+void gl_rect_2d_simple_tex( S32 width, S32 height )
+{
+	gGL.begin( LLRender::QUADS );
+
+		gGL.texCoord2f(1.f, 1.f);
+		gGL.vertex2i(width, height);
+
+		gGL.texCoord2f(0.f, 1.f);
+		gGL.vertex2i(0, height);
+
+		gGL.texCoord2f(0.f, 0.f);
+		gGL.vertex2i(0, 0);
+
+		gGL.texCoord2f(1.f, 0.f);
+		gGL.vertex2i(width, 0);
+	
+	gGL.end();
+}
+
+void gl_rect_2d_simple( S32 width, S32 height )
+{
+	gGL.begin( LLRender::QUADS );
+		gGL.vertex2i(width, height);
+		gGL.vertex2i(0, height);
+		gGL.vertex2i(0, 0);
+		gGL.vertex2i(width, 0);
+	gGL.end();
+}
+
+void gl_segmented_rect_2d_tex(const S32 left, 
+							  const S32 top, 
+							  const S32 right, 
+							  const S32 bottom, 
+							  const S32 texture_width, 
+							  const S32 texture_height, 
+							  const S32 border_size, 
+							  const U32 edges)
+{
+	S32 width = llabs(right - left);
+	S32 height = llabs(top - bottom);
+
+	gGL.pushUIMatrix();
+
+	gGL.translateUI((F32)left, (F32)bottom, 0.f);
+	LLVector2 border_uv_scale((F32)border_size / (F32)texture_width, (F32)border_size / (F32)texture_height);
+
+	if (border_uv_scale.mV[VX] > 0.5f)
+	{
+		border_uv_scale *= 0.5f / border_uv_scale.mV[VX];
+	}
+	if (border_uv_scale.mV[VY] > 0.5f)
+	{
+		border_uv_scale *= 0.5f / border_uv_scale.mV[VY];
+	}
+
+	F32 border_scale = llmin((F32)border_size, (F32)width * 0.5f, (F32)height * 0.5f);
+	LLVector2 border_width_left = ((edges & (~(U32)ROUNDED_RECT_RIGHT)) != 0) ? LLVector2(border_scale, 0.f) : LLVector2::zero;
+	LLVector2 border_width_right = ((edges & (~(U32)ROUNDED_RECT_LEFT)) != 0) ? LLVector2(border_scale, 0.f) : LLVector2::zero;
+	LLVector2 border_height_bottom = ((edges & (~(U32)ROUNDED_RECT_TOP)) != 0) ? LLVector2(0.f, border_scale) : LLVector2::zero;
+	LLVector2 border_height_top = ((edges & (~(U32)ROUNDED_RECT_BOTTOM)) != 0) ? LLVector2(0.f, border_scale) : LLVector2::zero;
+	LLVector2 width_vec((F32)width, 0.f);
+	LLVector2 height_vec(0.f, (F32)height);
+
+	gGL.begin(LLRender::QUADS);
+	{
+		// draw bottom left
+		gGL.texCoord2f(0.f, 0.f);
+		gGL.vertex2f(0.f, 0.f);
+
+		gGL.texCoord2f(border_uv_scale.mV[VX], 0.f);
+		gGL.vertex2fv(border_width_left.mV);
+
+		gGL.texCoord2f(border_uv_scale.mV[VX], border_uv_scale.mV[VY]);
+		gGL.vertex2fv((border_width_left + border_height_bottom).mV);
+
+		gGL.texCoord2f(0.f, border_uv_scale.mV[VY]);
+		gGL.vertex2fv(border_height_bottom.mV);
+
+		// draw bottom middle
+		gGL.texCoord2f(border_uv_scale.mV[VX], 0.f);
+		gGL.vertex2fv(border_width_left.mV);
+
+		gGL.texCoord2f(1.f - border_uv_scale.mV[VX], 0.f);
+		gGL.vertex2fv((width_vec - border_width_right).mV);
+
+		gGL.texCoord2f(1.f - border_uv_scale.mV[VX], border_uv_scale.mV[VY]);
+		gGL.vertex2fv((width_vec - border_width_right + border_height_bottom).mV);
+
+		gGL.texCoord2f(border_uv_scale.mV[VX], border_uv_scale.mV[VY]);
+		gGL.vertex2fv((border_width_left + border_height_bottom).mV);
+
+		// draw bottom right
+		gGL.texCoord2f(1.f - border_uv_scale.mV[VX], 0.f);
+		gGL.vertex2fv((width_vec - border_width_right).mV);
+
+		gGL.texCoord2f(1.f, 0.f);
+		gGL.vertex2fv(width_vec.mV);
+
+		gGL.texCoord2f(1.f, border_uv_scale.mV[VY]);
+		gGL.vertex2fv((width_vec + border_height_bottom).mV);
+
+		gGL.texCoord2f(1.f - border_uv_scale.mV[VX], border_uv_scale.mV[VY]);
+		gGL.vertex2fv((width_vec - border_width_right + border_height_bottom).mV);
+
+		// draw left 
+		gGL.texCoord2f(0.f, border_uv_scale.mV[VY]);
+		gGL.vertex2fv(border_height_bottom.mV);
+
+		gGL.texCoord2f(border_uv_scale.mV[VX], border_uv_scale.mV[VY]);
+		gGL.vertex2fv((border_width_left + border_height_bottom).mV);
+
+		gGL.texCoord2f(border_uv_scale.mV[VX], 1.f - border_uv_scale.mV[VY]);
+		gGL.vertex2fv((border_width_left + height_vec - border_height_top).mV);
+
+		gGL.texCoord2f(0.f, 1.f - border_uv_scale.mV[VY]);
+		gGL.vertex2fv((height_vec - border_height_top).mV);
+
+		// draw middle
+		gGL.texCoord2f(border_uv_scale.mV[VX], border_uv_scale.mV[VY]);
+		gGL.vertex2fv((border_width_left + border_height_bottom).mV);
+
+		gGL.texCoord2f(1.f - border_uv_scale.mV[VX], border_uv_scale.mV[VY]);
+		gGL.vertex2fv((width_vec - border_width_right + border_height_bottom).mV);
+
+		gGL.texCoord2f(1.f - border_uv_scale.mV[VX], 1.f - border_uv_scale.mV[VY]);
+		gGL.vertex2fv((width_vec - border_width_right + height_vec - border_height_top).mV);
+
+		gGL.texCoord2f(border_uv_scale.mV[VX], 1.f - border_uv_scale.mV[VY]);
+		gGL.vertex2fv((border_width_left + height_vec - border_height_top).mV);
+
+		// draw right 
+		gGL.texCoord2f(1.f - border_uv_scale.mV[VX], border_uv_scale.mV[VY]);
+		gGL.vertex2fv((width_vec - border_width_right + border_height_bottom).mV);
+
+		gGL.texCoord2f(1.f, border_uv_scale.mV[VY]);
+		gGL.vertex2fv((width_vec + border_height_bottom).mV);
+
+		gGL.texCoord2f(1.f, 1.f - border_uv_scale.mV[VY]);
+		gGL.vertex2fv((width_vec + height_vec - border_height_top).mV);
+
+		gGL.texCoord2f(1.f - border_uv_scale.mV[VX], 1.f - border_uv_scale.mV[VY]);
+		gGL.vertex2fv((width_vec - border_width_right + height_vec - border_height_top).mV);
+
+		// draw top left
+		gGL.texCoord2f(0.f, 1.f - border_uv_scale.mV[VY]);
+		gGL.vertex2fv((height_vec - border_height_top).mV);
+
+		gGL.texCoord2f(border_uv_scale.mV[VX], 1.f - border_uv_scale.mV[VY]);
+		gGL.vertex2fv((border_width_left + height_vec - border_height_top).mV);
+
+		gGL.texCoord2f(border_uv_scale.mV[VX], 1.f);
+		gGL.vertex2fv((border_width_left + height_vec).mV);
+
+		gGL.texCoord2f(0.f, 1.f);
+		gGL.vertex2fv((height_vec).mV);
+
+		// draw top middle
+		gGL.texCoord2f(border_uv_scale.mV[VX], 1.f - border_uv_scale.mV[VY]);
+		gGL.vertex2fv((border_width_left + height_vec - border_height_top).mV);
+
+		gGL.texCoord2f(1.f - border_uv_scale.mV[VX], 1.f - border_uv_scale.mV[VY]);
+		gGL.vertex2fv((width_vec - border_width_right + height_vec - border_height_top).mV);
+
+		gGL.texCoord2f(1.f - border_uv_scale.mV[VX], 1.f);
+		gGL.vertex2fv((width_vec - border_width_right + height_vec).mV);
+
+		gGL.texCoord2f(border_uv_scale.mV[VX], 1.f);
+		gGL.vertex2fv((border_width_left + height_vec).mV);
+
+		// draw top right
+		gGL.texCoord2f(1.f - border_uv_scale.mV[VX], 1.f - border_uv_scale.mV[VY]);
+		gGL.vertex2fv((width_vec - border_width_right + height_vec - border_height_top).mV);
+
+		gGL.texCoord2f(1.f, 1.f - border_uv_scale.mV[VY]);
+		gGL.vertex2fv((width_vec + height_vec - border_height_top).mV);
+
+		gGL.texCoord2f(1.f, 1.f);
+		gGL.vertex2fv((width_vec + height_vec).mV);
+
+		gGL.texCoord2f(1.f - border_uv_scale.mV[VX], 1.f);
+		gGL.vertex2fv((width_vec - border_width_right + height_vec).mV);
+	}
+	gGL.end();
+
+	gGL.popUIMatrix();
+}
+
+//FIXME: rewrite to use scissor?
+void gl_segmented_rect_2d_fragment_tex(const S32 left, 
+									   const S32 top, 
+									   const S32 right, 
+									   const S32 bottom, 
+									   const S32 texture_width, 
+									   const S32 texture_height, 
+									   const S32 border_size, 
+									   const F32 start_fragment, 
+									   const F32 end_fragment, 
+									   const U32 edges)
+{
+	S32 width = llabs(right - left);
+	S32 height = llabs(top - bottom);
+
+	gGL.pushUIMatrix();
+
+	gGL.translateUI((F32)left, (F32)bottom, 0.f);
+	LLVector2 border_uv_scale((F32)border_size / (F32)texture_width, (F32)border_size / (F32)texture_height);
+
+	if (border_uv_scale.mV[VX] > 0.5f)
+	{
+		border_uv_scale *= 0.5f / border_uv_scale.mV[VX];
+	}
+	if (border_uv_scale.mV[VY] > 0.5f)
+	{
+		border_uv_scale *= 0.5f / border_uv_scale.mV[VY];
+	}
+
+	F32 border_scale = llmin((F32)border_size, (F32)width * 0.5f, (F32)height * 0.5f);
+	LLVector2 border_width_left = ((edges & (~(U32)ROUNDED_RECT_RIGHT)) != 0) ? LLVector2(border_scale, 0.f) : LLVector2::zero;
+	LLVector2 border_width_right = ((edges & (~(U32)ROUNDED_RECT_LEFT)) != 0) ? LLVector2(border_scale, 0.f) : LLVector2::zero;
+	LLVector2 border_height_bottom = ((edges & (~(U32)ROUNDED_RECT_TOP)) != 0) ? LLVector2(0.f, border_scale) : LLVector2::zero;
+	LLVector2 border_height_top = ((edges & (~(U32)ROUNDED_RECT_BOTTOM)) != 0) ? LLVector2(0.f, border_scale) : LLVector2::zero;
+	LLVector2 width_vec((F32)width, 0.f);
+	LLVector2 height_vec(0.f, (F32)height);
+
+	F32 middle_start = border_scale / (F32)width;
+	F32 middle_end = 1.f - middle_start;
+
+	F32 u_min;
+	F32 u_max;
+	LLVector2 x_min;
+	LLVector2 x_max;
+
+	gGL.begin(LLRender::QUADS);
+	{
+		if (start_fragment < middle_start)
+		{
+			u_min = (start_fragment / middle_start) * border_uv_scale.mV[VX];
+			u_max = llmin(end_fragment / middle_start, 1.f) * border_uv_scale.mV[VX];
+			x_min = (start_fragment / middle_start) * border_width_left;
+			x_max = llmin(end_fragment / middle_start, 1.f) * border_width_left;
+
+			// draw bottom left
+			gGL.texCoord2f(u_min, 0.f);
+			gGL.vertex2fv(x_min.mV);
+
+			gGL.texCoord2f(border_uv_scale.mV[VX], 0.f);
+			gGL.vertex2fv(x_max.mV);
+
+			gGL.texCoord2f(u_max, border_uv_scale.mV[VY]);
+			gGL.vertex2fv((x_max + border_height_bottom).mV);
+
+			gGL.texCoord2f(u_min, border_uv_scale.mV[VY]);
+			gGL.vertex2fv((x_min + border_height_bottom).mV);
+
+			// draw left 
+			gGL.texCoord2f(u_min, border_uv_scale.mV[VY]);
+			gGL.vertex2fv((x_min + border_height_bottom).mV);
+
+			gGL.texCoord2f(u_max, border_uv_scale.mV[VY]);
+			gGL.vertex2fv((x_max + border_height_bottom).mV);
+
+			gGL.texCoord2f(u_max, 1.f - border_uv_scale.mV[VY]);
+			gGL.vertex2fv((x_max + height_vec - border_height_top).mV);
+
+			gGL.texCoord2f(u_min, 1.f - border_uv_scale.mV[VY]);
+			gGL.vertex2fv((x_min + height_vec - border_height_top).mV);
+			
+			// draw top left
+			gGL.texCoord2f(u_min, 1.f - border_uv_scale.mV[VY]);
+			gGL.vertex2fv((x_min + height_vec - border_height_top).mV);
+
+			gGL.texCoord2f(u_max, 1.f - border_uv_scale.mV[VY]);
+			gGL.vertex2fv((x_max + height_vec - border_height_top).mV);
+
+			gGL.texCoord2f(u_max, 1.f);
+			gGL.vertex2fv((x_max + height_vec).mV);
+
+			gGL.texCoord2f(u_min, 1.f);
+			gGL.vertex2fv((x_min + height_vec).mV);
+		}
+
+		if (end_fragment > middle_start || start_fragment < middle_end)
+		{
+			x_min = border_width_left + ((llclamp(start_fragment, middle_start, middle_end) - middle_start)) * width_vec;
+			x_max = border_width_left + ((llclamp(end_fragment, middle_start, middle_end) - middle_start)) * width_vec;
+
+			// draw bottom middle
+			gGL.texCoord2f(border_uv_scale.mV[VX], 0.f);
+			gGL.vertex2fv(x_min.mV);
+
+			gGL.texCoord2f(1.f - border_uv_scale.mV[VX], 0.f);
+			gGL.vertex2fv((x_max).mV);
+
+			gGL.texCoord2f(1.f - border_uv_scale.mV[VX], border_uv_scale.mV[VY]);
+			gGL.vertex2fv((x_max + border_height_bottom).mV);
+
+			gGL.texCoord2f(border_uv_scale.mV[VX], border_uv_scale.mV[VY]);
+			gGL.vertex2fv((x_min + border_height_bottom).mV);
+
+			// draw middle
+			gGL.texCoord2f(border_uv_scale.mV[VX], border_uv_scale.mV[VY]);
+			gGL.vertex2fv((x_min + border_height_bottom).mV);
+
+			gGL.texCoord2f(1.f - border_uv_scale.mV[VX], border_uv_scale.mV[VY]);
+			gGL.vertex2fv((x_max + border_height_bottom).mV);
+
+			gGL.texCoord2f(1.f - border_uv_scale.mV[VX], 1.f - border_uv_scale.mV[VY]);
+			gGL.vertex2fv((x_max + height_vec - border_height_top).mV);
+
+			gGL.texCoord2f(border_uv_scale.mV[VX], 1.f - border_uv_scale.mV[VY]);
+			gGL.vertex2fv((x_min + height_vec - border_height_top).mV);
+
+			// draw top middle
+			gGL.texCoord2f(border_uv_scale.mV[VX], 1.f - border_uv_scale.mV[VY]);
+			gGL.vertex2fv((x_min + height_vec - border_height_top).mV);
+
+			gGL.texCoord2f(1.f - border_uv_scale.mV[VX], 1.f - border_uv_scale.mV[VY]);
+			gGL.vertex2fv((x_max + height_vec - border_height_top).mV);
+
+			gGL.texCoord2f(1.f - border_uv_scale.mV[VX], 1.f);
+			gGL.vertex2fv((x_max + height_vec).mV);
+
+			gGL.texCoord2f(border_uv_scale.mV[VX], 1.f);
+			gGL.vertex2fv((x_min + height_vec).mV);
+		}
+
+		if (end_fragment > middle_end)
+		{
+			u_min = (1.f - llmax(0.f, ((start_fragment - middle_end) / middle_start))) * border_uv_scale.mV[VX];
+			u_max = (1.f - ((end_fragment - middle_end) / middle_start)) * border_uv_scale.mV[VX];
+			x_min = width_vec - ((1.f - llmax(0.f, ((start_fragment - middle_end) / middle_start))) * border_width_right);
+			x_max = width_vec - ((1.f - ((end_fragment - middle_end) / middle_start)) * border_width_right);
+
+			// draw bottom right
+			gGL.texCoord2f(u_min, 0.f);
+			gGL.vertex2fv((x_min).mV);
+
+			gGL.texCoord2f(u_max, 0.f);
+			gGL.vertex2fv(x_max.mV);
+
+			gGL.texCoord2f(u_max, border_uv_scale.mV[VY]);
+			gGL.vertex2fv((x_max + border_height_bottom).mV);
+
+			gGL.texCoord2f(u_min, border_uv_scale.mV[VY]);
+			gGL.vertex2fv((x_min + border_height_bottom).mV);
+
+			// draw right 
+			gGL.texCoord2f(u_min, border_uv_scale.mV[VY]);
+			gGL.vertex2fv((x_min + border_height_bottom).mV);
+
+			gGL.texCoord2f(u_max, border_uv_scale.mV[VY]);
+			gGL.vertex2fv((x_max + border_height_bottom).mV);
+
+			gGL.texCoord2f(u_max, 1.f - border_uv_scale.mV[VY]);
+			gGL.vertex2fv((x_max + height_vec - border_height_top).mV);
+
+			gGL.texCoord2f(u_min, 1.f - border_uv_scale.mV[VY]);
+			gGL.vertex2fv((x_min + height_vec - border_height_top).mV);
+
+			// draw top right
+			gGL.texCoord2f(u_min, 1.f - border_uv_scale.mV[VY]);
+			gGL.vertex2fv((x_min + height_vec - border_height_top).mV);
+
+			gGL.texCoord2f(u_max, 1.f - border_uv_scale.mV[VY]);
+			gGL.vertex2fv((x_max + height_vec - border_height_top).mV);
+
+			gGL.texCoord2f(u_max, 1.f);
+			gGL.vertex2fv((x_max + height_vec).mV);
+
+			gGL.texCoord2f(u_min, 1.f);
+			gGL.vertex2fv((x_min + height_vec).mV);
+		}
+	}
+	gGL.end();
+
+	gGL.popUIMatrix();
+}
+
+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)
+{
+	gGL.begin(LLRender::QUADS);
+	{
+		// draw bottom left
+		gGL.texCoord2f(clip_rect.mLeft, clip_rect.mBottom);
+		gGL.vertex3f(0.f, 0.f, 0.f);
+
+		gGL.texCoord2f(center_uv_rect.mLeft, clip_rect.mBottom);
+		gGL.vertex3fv((center_draw_rect.mLeft * width_vec).mV);
+
+		gGL.texCoord2f(center_uv_rect.mLeft, center_uv_rect.mBottom);
+		gGL.vertex3fv((center_draw_rect.mLeft * width_vec + center_draw_rect.mBottom * height_vec).mV);
+
+		gGL.texCoord2f(clip_rect.mLeft, center_uv_rect.mBottom);
+		gGL.vertex3fv((center_draw_rect.mBottom * height_vec).mV);
+
+		// draw bottom middle
+		gGL.texCoord2f(center_uv_rect.mLeft, clip_rect.mBottom);
+		gGL.vertex3fv((center_draw_rect.mLeft * width_vec).mV);
+
+		gGL.texCoord2f(center_uv_rect.mRight, clip_rect.mBottom);
+		gGL.vertex3fv((center_draw_rect.mRight * width_vec).mV);
+
+		gGL.texCoord2f(center_uv_rect.mRight, center_uv_rect.mBottom);
+		gGL.vertex3fv((center_draw_rect.mRight * width_vec + center_draw_rect.mBottom * height_vec).mV);
+
+		gGL.texCoord2f(center_uv_rect.mLeft, center_uv_rect.mBottom);
+		gGL.vertex3fv((center_draw_rect.mLeft * width_vec + center_draw_rect.mBottom * height_vec).mV);
+
+		// draw bottom right
+		gGL.texCoord2f(center_uv_rect.mRight, clip_rect.mBottom);
+		gGL.vertex3fv((center_draw_rect.mRight * width_vec).mV);
+
+		gGL.texCoord2f(clip_rect.mRight, clip_rect.mBottom);
+		gGL.vertex3fv(width_vec.mV);
+
+		gGL.texCoord2f(clip_rect.mRight, center_uv_rect.mBottom);
+		gGL.vertex3fv((width_vec + center_draw_rect.mBottom * height_vec).mV);
+
+		gGL.texCoord2f(center_uv_rect.mRight, center_uv_rect.mBottom);
+		gGL.vertex3fv((center_draw_rect.mRight * width_vec + center_draw_rect.mBottom * height_vec).mV);
+
+		// draw left 
+		gGL.texCoord2f(clip_rect.mLeft, center_uv_rect.mBottom);
+		gGL.vertex3fv((center_draw_rect.mBottom * height_vec).mV);
+
+		gGL.texCoord2f(center_uv_rect.mLeft, center_uv_rect.mBottom);
+		gGL.vertex3fv((center_draw_rect.mLeft * width_vec + center_draw_rect.mBottom * height_vec).mV);
+
+		gGL.texCoord2f(center_uv_rect.mLeft, center_uv_rect.mTop);
+		gGL.vertex3fv((center_draw_rect.mLeft * width_vec + center_draw_rect.mTop * height_vec).mV);
+
+		gGL.texCoord2f(clip_rect.mLeft, center_uv_rect.mTop);
+		gGL.vertex3fv((center_draw_rect.mTop * height_vec).mV);
+
+		// draw middle
+		gGL.texCoord2f(center_uv_rect.mLeft, center_uv_rect.mBottom);
+		gGL.vertex3fv((center_draw_rect.mLeft * width_vec + center_draw_rect.mBottom * height_vec).mV);
+
+		gGL.texCoord2f(center_uv_rect.mRight, center_uv_rect.mBottom);
+		gGL.vertex3fv((center_draw_rect.mRight * width_vec + center_draw_rect.mBottom * height_vec).mV);
+
+		gGL.texCoord2f(center_uv_rect.mRight, center_uv_rect.mTop);
+		gGL.vertex3fv((center_draw_rect.mRight * width_vec + center_draw_rect.mTop * height_vec).mV);
+
+		gGL.texCoord2f(center_uv_rect.mLeft, center_uv_rect.mTop);
+		gGL.vertex3fv((center_draw_rect.mLeft * width_vec + center_draw_rect.mTop * height_vec).mV);
+
+		// draw right 
+		gGL.texCoord2f(center_uv_rect.mRight, center_uv_rect.mBottom);
+		gGL.vertex3fv((center_draw_rect.mRight * width_vec + center_draw_rect.mBottom * height_vec).mV);
+
+		gGL.texCoord2f(clip_rect.mRight, center_uv_rect.mBottom);
+		gGL.vertex3fv((width_vec + center_draw_rect.mBottom * height_vec).mV);
+
+		gGL.texCoord2f(clip_rect.mRight, center_uv_rect.mTop);
+		gGL.vertex3fv((width_vec + center_draw_rect.mTop * height_vec).mV);
+
+		gGL.texCoord2f(center_uv_rect.mRight, center_uv_rect.mTop);
+		gGL.vertex3fv((center_draw_rect.mRight * width_vec + center_draw_rect.mTop * height_vec).mV);
+
+		// draw top left
+		gGL.texCoord2f(clip_rect.mLeft, center_uv_rect.mTop);
+		gGL.vertex3fv((center_draw_rect.mTop * height_vec).mV);
+
+		gGL.texCoord2f(center_uv_rect.mLeft, center_uv_rect.mTop);
+		gGL.vertex3fv((center_draw_rect.mLeft * width_vec + center_draw_rect.mTop * height_vec).mV);
+
+		gGL.texCoord2f(center_uv_rect.mLeft, clip_rect.mTop);
+		gGL.vertex3fv((center_draw_rect.mLeft * width_vec + height_vec).mV);
+
+		gGL.texCoord2f(clip_rect.mLeft, clip_rect.mTop);
+		gGL.vertex3fv((height_vec).mV);
+
+		// draw top middle
+		gGL.texCoord2f(center_uv_rect.mLeft, center_uv_rect.mTop);
+		gGL.vertex3fv((center_draw_rect.mLeft * width_vec + center_draw_rect.mTop * height_vec).mV);
+
+		gGL.texCoord2f(center_uv_rect.mRight, center_uv_rect.mTop);
+		gGL.vertex3fv((center_draw_rect.mRight * width_vec + center_draw_rect.mTop * height_vec).mV);
+
+		gGL.texCoord2f(center_uv_rect.mRight, clip_rect.mTop);
+		gGL.vertex3fv((center_draw_rect.mRight * width_vec + height_vec).mV);
+
+		gGL.texCoord2f(center_uv_rect.mLeft, clip_rect.mTop);
+		gGL.vertex3fv((center_draw_rect.mLeft * width_vec + height_vec).mV);
+
+		// draw top right
+		gGL.texCoord2f(center_uv_rect.mRight, center_uv_rect.mTop);
+		gGL.vertex3fv((center_draw_rect.mRight * width_vec + center_draw_rect.mTop * height_vec).mV);
+
+		gGL.texCoord2f(clip_rect.mRight, center_uv_rect.mTop);
+		gGL.vertex3fv((width_vec + center_draw_rect.mTop * height_vec).mV);
+
+		gGL.texCoord2f(clip_rect.mRight, clip_rect.mTop);
+		gGL.vertex3fv((width_vec + height_vec).mV);
+
+		gGL.texCoord2f(center_uv_rect.mRight, clip_rect.mTop);
+		gGL.vertex3fv((center_draw_rect.mRight * width_vec + height_vec).mV);
+	}
+	gGL.end();
+
+}
+
+// static
+void LLRender2D::initClass(LLImageProviderInterface* image_provider,
+						   const LLVector2* scale_factor)
+{
+	sGLScaleFactor = (scale_factor == NULL) ? LLVector2(1.f, 1.f) : *scale_factor;
+	sImageProvider = image_provider;
+}
+
+// static
+void LLRender2D::cleanupClass()
+{
+	if(sImageProvider)
+	{
+		sImageProvider->cleanUp();
+	}
+}
+
+
+//static
+void LLRender2D::translate(F32 x, F32 y, F32 z)
+{
+	gGL.translateUI(x,y,z);
+	LLFontGL::sCurOrigin.mX += (S32) x;
+	LLFontGL::sCurOrigin.mY += (S32) y;
+	LLFontGL::sCurDepth += z;
+}
+
+//static
+void LLRender2D::pushMatrix()
+{
+	gGL.pushUIMatrix();
+	LLFontGL::sOriginStack.push_back(std::make_pair(LLFontGL::sCurOrigin, LLFontGL::sCurDepth));
+}
+
+//static
+void LLRender2D::popMatrix()
+{
+	gGL.popUIMatrix();
+	LLFontGL::sCurOrigin = LLFontGL::sOriginStack.back().first;
+	LLFontGL::sCurDepth = LLFontGL::sOriginStack.back().second;
+	LLFontGL::sOriginStack.pop_back();
+}
+
+//static 
+void LLRender2D::loadIdentity()
+{
+	gGL.loadUIIdentity(); 
+	LLFontGL::sCurOrigin.mX = 0;
+	LLFontGL::sCurOrigin.mY = 0;
+	LLFontGL::sCurDepth = 0.f;
+}
+
+//static
+void LLRender2D::setScaleFactor(const LLVector2 &scale_factor)
+{
+	sGLScaleFactor = scale_factor;
+}
+
+//static
+void LLRender2D::setLineWidth(F32 width)
+{
+	gGL.flush();
+	glLineWidth(width * lerp(sGLScaleFactor.mV[VX], sGLScaleFactor.mV[VY], 0.5f));
+}
+
+//static
+LLPointer<LLUIImage> LLRender2D::getUIImageByID(const LLUUID& image_id, S32 priority)
+{
+	if (sImageProvider)
+	{
+		return sImageProvider->getUIImageByID(image_id, priority);
+	}
+	else
+	{
+		return NULL;
+	}
+}
+
+//static 
+LLPointer<LLUIImage> LLRender2D::getUIImage(const std::string& name, S32 priority)
+{
+	if (!name.empty() && sImageProvider)
+		return sImageProvider->getUIImage(name, priority);
+	else
+		return NULL;
+}
+
diff --git a/indra/llrender/llrender2dutils.h b/indra/llrender/llrender2dutils.h
new file mode 100644
index 0000000000..4884422c58
--- /dev/null
+++ b/indra/llrender/llrender2dutils.h
@@ -0,0 +1,163 @@
+/** 
+ * @file llrender2dutils.h
+ * @brief GL function declarations for immediate-mode gl drawing.
+ *
+ * $LicenseInfo:firstyear=2012&license=viewerlgpl$
+ * 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
+ * $/LicenseInfo$
+ */
+
+// All immediate-mode gl drawing should happen here.
+
+
+#ifndef LL_RENDER2DUTILS_H
+#define LL_RENDER2DUTILS_H
+
+#include "llpointer.h"		// LLPointer<>
+#include "llrect.h"
+#include "llglslshader.h"
+
+class LLColor4; 
+class LLVector3;
+class LLVector2;
+class LLUIImage;
+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);
+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_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_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_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_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);
+
+void gl_draw_image(S32 x, S32 y, 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_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));
+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));
+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));
+
+void gl_stippled_line_3d( const LLVector3& start, const LLVector3& end, const LLColor4& color, F32 phase = 0.f ); 
+
+void gl_rect_2d_simple_tex( S32 width, S32 height );
+
+// segmented rectangles
+
+/*
+   TL |______TOP_________| TR 
+     /|                  |\  
+   _/_|__________________|_\_
+   L| |    MIDDLE        | |R
+   _|_|__________________|_|_
+    \ |    BOTTOM        | /  
+   BL\|__________________|/ BR
+      |                  |    
+*/
+
+typedef enum e_rounded_edge
+{
+	ROUNDED_RECT_LEFT	= 0x1, 
+	ROUNDED_RECT_TOP	= 0x2, 
+	ROUNDED_RECT_RIGHT	= 0x4, 
+	ROUNDED_RECT_BOTTOM	= 0x8,
+	ROUNDED_RECT_ALL	= 0xf
+}ERoundedEdge;
+
+
+void gl_segmented_rect_2d_tex(const S32 left, const S32 top, const S32 right, const S32 bottom, const S32 texture_width, const S32 texture_height, const S32 border_size, const U32 edges = ROUNDED_RECT_ALL);
+void gl_segmented_rect_2d_fragment_tex(const S32 left, const S32 top, const S32 right, const S32 bottom, 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 )
+{
+	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)
+{
+	gl_rect_2d_offset_local( rect.mLeft, rect.mTop, rect.mRight, rect.mBottom, pixel_offset, filled );
+}
+
+class LLImageProviderInterface;
+
+class LLRender2D
+{
+	LOG_CLASS(LLRender2D);
+public:
+	static void initClass(LLImageProviderInterface* image_provider,
+						  const LLVector2* scale_factor);
+	static void cleanupClass();
+
+	static void pushMatrix();
+	static void popMatrix();
+	static void loadIdentity();
+	static void translate(F32 x, F32 y, F32 z = 0.0f);
+
+	static void setLineWidth(F32 width);
+	static void setScaleFactor(const LLVector2& scale_factor);
+
+	static LLPointer<LLUIImage> getUIImageByID(const LLUUID& image_id, S32 priority = 0);
+	static LLPointer<LLUIImage> getUIImage(const std::string& name, S32 priority = 0);
+
+	static LLVector2		sGLScaleFactor;
+private:
+	static LLImageProviderInterface* sImageProvider;
+};
+
+class LLImageProviderInterface
+{
+protected:
+	LLImageProviderInterface() {};
+	virtual ~LLImageProviderInterface() {};
+public:
+	virtual LLPointer<LLUIImage> getUIImage(const std::string& name, S32 priority) = 0;
+	virtual LLPointer<LLUIImage> getUIImageByID(const LLUUID& id, S32 priority) = 0;
+	virtual void cleanUp() = 0;
+};
+
+
+extern LLGLSLShader gSolidColorProgram;
+extern LLGLSLShader gUIProgram;
+
+#endif // LL_RENDER2DUTILS_H
+
diff --git a/indra/llrender/llrendertarget.cpp b/indra/llrender/llrendertarget.cpp
index e501d0495b..4a4f6a7a2f 100644
--- a/indra/llrender/llrendertarget.cpp
+++ b/indra/llrender/llrendertarget.cpp
@@ -585,3 +585,5 @@ void LLRenderTarget::getViewport(S32* viewport)
 	viewport[3] = mResY;
 }
 
+
+
diff --git a/indra/llrender/llrendertarget.h b/indra/llrender/llrendertarget.h
index 5cff0a0a21..a7bc4e1385 100644
--- a/indra/llrender/llrendertarget.h
+++ b/indra/llrender/llrendertarget.h
@@ -28,7 +28,6 @@
 #define LL_LLRENDERTARGET_H
 
 // LLRenderTarget is unavailible on the mapserver since it uses FBOs.
-#if !LL_MESA_HEADLESS
 
 #include "llgl.h"
 #include "llrender.h"
@@ -157,7 +156,5 @@ protected:
 	static LLRenderTarget* sBoundTarget;
 };
 
-#endif //!LL_MESA_HEADLESS
-
 #endif
 
diff --git a/indra/llrender/lltexture.h b/indra/llrender/lltexture.h
index 569a65c2e0..093bac20d1 100644
--- a/indra/llrender/lltexture.h
+++ b/indra/llrender/lltexture.h
@@ -38,10 +38,9 @@ class LLTexUnit ;
 class LLFontGL ;
 
 //
-//this is an abstract class as the parent for the class LLViewerTexture
-//through the following virtual functions, the class LLViewerTexture can be reached from /llrender.
+//this is an abstract class as the parent for the class LLGLTexture
 //
-class LLTexture : public LLRefCount
+class LLTexture : public virtual LLRefCount
 {
 	friend class LLTexUnit ;
 	friend class LLFontGL ;
@@ -53,7 +52,7 @@ public:
 	LLTexture(){}
 
 	//
-	//interfaces to access LLViewerTexture
+	//interfaces to access LLGLTexture
 	//
 	virtual S8         getType() const = 0 ;
 	virtual void       setKnownDrawSize(S32 width, S32 height) = 0 ;
diff --git a/indra/llrender/lluiimage.cpp b/indra/llrender/lluiimage.cpp
new file mode 100644
index 0000000000..b954b66350
--- /dev/null
+++ b/indra/llrender/lluiimage.cpp
@@ -0,0 +1,243 @@
+/** 
+ * @file lluiimage.cpp
+ * @brief UI implementation
+ *
+ * $LicenseInfo:firstyear=2007&license=viewerlgpl$
+ * 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
+ * $/LicenseInfo$
+ */
+
+// Utilities functions the user interface needs
+
+//#include "llviewerprecompiledheaders.h"
+#include "linden_common.h"
+
+// Project includes
+#include "lluiimage.h"
+#include "llrender2dutils.h"
+
+LLUIImage::LLUIImage(const std::string& name, LLPointer<LLTexture> image)
+:	mName(name),
+	mImage(image),
+	mScaleRegion(0.f, 1.f, 1.f, 0.f),
+	mClipRegion(0.f, 1.f, 1.f, 0.f),
+	mUniformScaling(TRUE),
+	mNoClip(TRUE),
+	mImageLoaded(NULL)
+{
+}
+
+LLUIImage::~LLUIImage()
+{
+	delete mImageLoaded;
+}
+
+void LLUIImage::setClipRegion(const LLRectf& region) 
+{ 
+	mClipRegion = region; 
+	mNoClip = mClipRegion.mLeft == 0.f
+				&& mClipRegion.mRight == 1.f
+				&& mClipRegion.mBottom == 0.f
+				&& mClipRegion.mTop == 1.f;
+}
+
+void LLUIImage::setScaleRegion(const LLRectf& region) 
+{ 
+	mScaleRegion = region; 
+	mUniformScaling = mScaleRegion.mLeft == 0.f
+					&& mScaleRegion.mRight == 1.f
+					&& mScaleRegion.mBottom == 0.f
+					&& mScaleRegion.mTop == 1.f;
+}
+
+//TODO: move drawing implementation inside class
+void LLUIImage::draw(S32 x, S32 y, const LLColor4& color) const
+{
+	gl_draw_scaled_image(x, y, getWidth(), getHeight(), mImage, color, mClipRegion);
+}
+
+void LLUIImage::draw(S32 x, S32 y, S32 width, S32 height, const LLColor4& color) const
+{
+	if (mUniformScaling)
+	{
+		gl_draw_scaled_image(x, y, width, height, mImage, color, mClipRegion);
+	}
+	else
+	{
+		gl_draw_scaled_image_with_border(
+			x, y, 
+			width, height, 
+			mImage, 
+			color,
+			FALSE,
+			mClipRegion,
+			mScaleRegion);
+	}
+}
+
+void LLUIImage::drawSolid(S32 x, S32 y, S32 width, S32 height, const LLColor4& color) const
+{
+	gl_draw_scaled_image_with_border(
+		x, y, 
+		width, height, 
+		mImage, 
+		color, 
+		TRUE,
+		mClipRegion,
+		mScaleRegion);
+}
+
+void LLUIImage::drawBorder(S32 x, S32 y, S32 width, S32 height, const LLColor4& color, S32 border_width) const
+{
+	LLRect border_rect;
+	border_rect.setOriginAndSize(x, y, width, height);
+	border_rect.stretch(border_width, border_width);
+	drawSolid(border_rect, color);
+}
+
+void LLUIImage::draw3D(const LLVector3& origin_agent, const LLVector3& x_axis, const LLVector3& y_axis, 
+						const LLRect& rect, const LLColor4& color)
+{
+	F32 border_scale = 1.f;
+	F32 border_height = (1.f - mScaleRegion.getHeight()) * getHeight();
+	F32 border_width = (1.f - mScaleRegion.getWidth()) * getWidth();
+	if (rect.getHeight() < border_height || rect.getWidth() < border_width)
+	{
+		 if(border_height - rect.getHeight() > border_width - rect.getWidth())
+		 {
+			 border_scale = (F32)rect.getHeight() / border_height;
+		 }
+		 else
+		 {
+			border_scale = (F32)rect.getWidth() / border_width;
+		 }
+	}
+
+	LLRender2D::pushMatrix();
+	{ 
+		LLVector3 rect_origin = origin_agent + (rect.mLeft * x_axis) + (rect.mBottom * y_axis); 
+		LLRender2D::translate(rect_origin.mV[VX],
+						rect_origin.mV[VY], 
+						rect_origin.mV[VZ]);
+		gGL.getTexUnit(0)->bind(getImage());
+		gGL.color4fv(color.mV);
+
+		LLRectf center_uv_rect(mClipRegion.mLeft + mScaleRegion.mLeft * mClipRegion.getWidth(),
+							mClipRegion.mBottom + mScaleRegion.mTop * mClipRegion.getHeight(),
+							mClipRegion.mLeft + mScaleRegion.mRight * mClipRegion.getWidth(),
+							mClipRegion.mBottom + mScaleRegion.mBottom * mClipRegion.getHeight());
+		gl_segmented_rect_3d_tex(mClipRegion,
+								center_uv_rect,
+								LLRectf(border_width * border_scale * 0.5f / (F32)rect.getWidth(),
+										(rect.getHeight() - (border_height * border_scale * 0.5f)) / (F32)rect.getHeight(),
+										(rect.getWidth() - (border_width * border_scale * 0.5f)) / (F32)rect.getWidth(),
+										(border_height * border_scale * 0.5f) / (F32)rect.getHeight()),
+								rect.getWidth() * x_axis, 
+								rect.getHeight() * y_axis);
+		
+	} LLRender2D::popMatrix();
+}
+
+
+S32 LLUIImage::getWidth() const
+{ 
+	// return clipped dimensions of actual image area
+	return llround((F32)mImage->getWidth(0) * mClipRegion.getWidth()); 
+}
+
+S32 LLUIImage::getHeight() const
+{ 
+	// return clipped dimensions of actual image area
+	return llround((F32)mImage->getHeight(0) * mClipRegion.getHeight()); 
+}
+
+S32 LLUIImage::getTextureWidth() const
+{
+	return mImage->getWidth(0);
+}
+
+S32 LLUIImage::getTextureHeight() const
+{
+	return mImage->getHeight(0);
+}
+
+boost::signals2::connection LLUIImage::addLoadedCallback( const image_loaded_signal_t::slot_type& cb ) 
+{
+	if (!mImageLoaded) 
+	{
+		mImageLoaded = new image_loaded_signal_t();
+	}
+	return mImageLoaded->connect(cb);
+}
+
+
+void LLUIImage::onImageLoaded()
+{
+	if (mImageLoaded)
+	{
+		(*mImageLoaded)();
+	}
+}
+
+
+namespace LLInitParam
+{
+	void ParamValue<LLUIImage*>::updateValueFromBlock()
+	{
+		// The keyword "none" is specifically requesting a null image
+		// do not default to current value. Used to overwrite template images. 
+		if (name() == "none")
+		{
+			updateValue(NULL);
+			return;
+		}
+
+		LLUIImage* imagep =  LLRender2D::getUIImage(name());
+		if (imagep)
+		{
+			updateValue(imagep);
+		}
+	}
+	
+	void ParamValue<LLUIImage*>::updateBlockFromValue(bool make_block_authoritative)
+	{
+		if (getValue() == NULL)
+		{
+			name.set("none", make_block_authoritative);
+		}
+		else
+		{
+			name.set(getValue()->getName(), make_block_authoritative);
+		}
+	}
+
+	
+	bool ParamCompare<LLUIImage*, false>::equals(
+		LLUIImage* const &a,
+		LLUIImage* const &b)
+	{
+		// force all LLUIImages for XML UI export to be "non-default"
+		if (!a && !b)
+			return false;
+		else
+			return (a == b);
+	}
+}
+
diff --git a/indra/llrender/lluiimage.h b/indra/llrender/lluiimage.h
new file mode 100644
index 0000000000..7817ba1c7b
--- /dev/null
+++ b/indra/llrender/lluiimage.h
@@ -0,0 +1,126 @@
+/** 
+ * @file lluiimage.h
+ * @brief wrapper for images used in the UI that handles smart scaling, etc.
+ *
+ * $LicenseInfo:firstyear=2007&license=viewerlgpl$
+ * 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_LLUIIMAGE_H
+#define LL_LLUIIMAGE_H
+
+#include "v4color.h"
+#include "llpointer.h"
+#include "llrefcount.h"
+#include "llrefcount.h"
+#include "llrect.h"
+#include <boost/function.hpp>
+#include <boost/signals2.hpp>
+#include "llinitparam.h"
+#include "lltexture.h"
+
+extern const LLColor4 UI_VERTEX_COLOR;
+
+class LLUIImage : public LLRefCount
+{
+public:
+	typedef boost::signals2::signal<void (void)> image_loaded_signal_t;
+
+	LLUIImage(const std::string& name, LLPointer<LLTexture> image);
+	virtual ~LLUIImage();
+
+	void setClipRegion(const LLRectf& region);
+	void setScaleRegion(const LLRectf& region);
+
+	LLPointer<LLTexture> getImage() { return mImage; }
+	const LLPointer<LLTexture>& getImage() const { return mImage; }
+
+	void draw(S32 x, S32 y, S32 width, S32 height, const LLColor4& color = UI_VERTEX_COLOR) const;
+	void draw(S32 x, S32 y, const LLColor4& color = UI_VERTEX_COLOR) const;
+	void draw(const LLRect& rect, const LLColor4& color = UI_VERTEX_COLOR) const { draw(rect.mLeft, rect.mBottom, rect.getWidth(), rect.getHeight(), color); }
+	
+	void drawSolid(S32 x, S32 y, S32 width, S32 height, const LLColor4& color) const;
+	void drawSolid(const LLRect& rect, const LLColor4& color) const { drawSolid(rect.mLeft, rect.mBottom, rect.getWidth(), rect.getHeight(), color); }
+	void drawSolid(S32 x, S32 y, const LLColor4& color) const { drawSolid(x, y, getWidth(), getHeight(), color); }
+
+	void drawBorder(S32 x, S32 y, S32 width, S32 height, const LLColor4& color, S32 border_width) const;
+	void drawBorder(const LLRect& rect, const LLColor4& color, S32 border_width) const { drawBorder(rect.mLeft, rect.mBottom, rect.getWidth(), rect.getHeight(), color, border_width); }
+	void drawBorder(S32 x, S32 y, const LLColor4& color, S32 border_width) const { drawBorder(x, y, getWidth(), getHeight(), color, border_width); }
+
+	void draw3D(const LLVector3& origin_agent, const LLVector3& x_axis, const LLVector3& y_axis, const LLRect& rect, const LLColor4& color);
+
+	const std::string& getName() const { return mName; }
+
+	virtual S32 getWidth() const;
+	virtual S32 getHeight() const;
+
+	// returns dimensions of underlying textures, which might not be equal to ui image portion
+	S32 getTextureWidth() const;
+	S32 getTextureHeight() const;
+
+	boost::signals2::connection addLoadedCallback( const image_loaded_signal_t::slot_type& cb );
+
+	void onImageLoaded();
+
+protected:
+	image_loaded_signal_t* mImageLoaded;
+
+	std::string			mName;
+	LLRectf				mScaleRegion;
+	LLRectf				mClipRegion;
+	LLPointer<LLTexture> mImage;
+	BOOL				mUniformScaling;
+	BOOL				mNoClip;
+};
+
+namespace LLInitParam
+{
+	template<>
+	class ParamValue<LLUIImage*> 
+	:	public CustomParamValue<LLUIImage*>
+	{
+		typedef boost::add_reference<boost::add_const<LLUIImage*>::type>::type	T_const_ref;
+		typedef CustomParamValue<LLUIImage*> super_t;
+	public:
+		Optional<std::string> name;
+
+		ParamValue(LLUIImage* const& image = NULL)
+		:	super_t(image)
+		{
+			updateBlockFromValue(false);
+			addSynonym(name, "name");
+		}
+
+		void updateValueFromBlock();
+		void updateBlockFromValue(bool make_block_authoritative);
+	};
+
+	// Need custom comparison function for our test app, which only loads
+	// LLUIImage* as NULL.
+	template<>
+	struct ParamCompare<LLUIImage*, false>
+	{
+		static bool equals(LLUIImage* const &a, LLUIImage* const &b);
+	};
+}
+
+typedef LLPointer<LLUIImage> LLUIImagePtr;
+#endif
diff --git a/indra/llrender/llvertexbuffer.cpp b/indra/llrender/llvertexbuffer.cpp
index f8ab085aac..87fb76e46e 100644
--- a/indra/llrender/llvertexbuffer.cpp
+++ b/indra/llrender/llvertexbuffer.cpp
@@ -407,7 +407,6 @@ void LLVertexBuffer::setupClientArrays(U32 data_mask)
 {
 	if (sLastMask != data_mask)
 	{
-		bool error = false;
 
 		if (gGLManager.mGLSLVersionMajor < 2 && gGLManager.mGLSLVersionMinor < 30)
 		{
@@ -474,7 +473,6 @@ void LLVertexBuffer::setupClientArrays(U32 data_mask)
 						{
 							if (gDebugSession)
 							{
-								error = true;
 								gFailLog << "Bad client state! " << array[i] << " disabled." << std::endl;
 							}
 							else
@@ -494,7 +492,6 @@ void LLVertexBuffer::setupClientArrays(U32 data_mask)
 					{ //needs to be disabled, make sure it was (DEBUG TEMPORARY)
 						if (gDebugSession)
 						{
-							error = true;
 							gFailLog << "Bad client state! " << array[i] << " enabled." << std::endl;
 						}
 						else
@@ -553,8 +550,10 @@ void LLVertexBuffer::setupClientArrays(U32 data_mask)
 }
 
 //static
+static LLFastTimer::DeclareTimer FTM_VB_DRAW_ARRAYS("drawArrays");
 void LLVertexBuffer::drawArrays(U32 mode, const std::vector<LLVector3>& pos, const std::vector<LLVector3>& norm)
 {
+	LLFastTimer t(FTM_VB_DRAW_ARRAYS);
 	llassert(!LLGLSLShader::sNoFixedFunction || LLGLSLShader::sCurBoundShaderPtr != NULL);
 	gGL.syncMatrices();
 
@@ -789,6 +788,7 @@ void LLVertexBuffer::draw(U32 mode, U32 count, U32 indices_offset) const
 	placeFence();
 }
 
+static LLFastTimer::DeclareTimer FTM_GL_DRAW_ARRAYS("GL draw arrays");
 void LLVertexBuffer::drawArrays(U32 mode, U32 first, U32 count) const
 {
 	llassert(!LLGLSLShader::sNoFixedFunction || LLGLSLShader::sCurBoundShaderPtr != NULL);
@@ -823,8 +823,11 @@ void LLVertexBuffer::drawArrays(U32 mode, U32 first, U32 count) const
 		return;
 	}
 
-	stop_glerror();
-	glDrawArrays(sGLMode[mode], first, count);
+	{
+		LLFastTimer t2(FTM_GL_DRAW_ARRAYS);
+		stop_glerror();
+		glDrawArrays(sGLMode[mode], first, count);
+	}
 	stop_glerror();
 	placeFence();
 }
@@ -1576,8 +1579,10 @@ volatile U8* LLVertexBuffer::mapVertexBuffer(S32 type, S32 index, S32 count, boo
 				{
 					if (map_range)
 					{
+#ifndef LL_MESA_HEADLESS
 						glBufferParameteriAPPLE(GL_ARRAY_BUFFER_ARB, GL_BUFFER_SERIALIZED_MODIFY_APPLE, GL_FALSE);
 						glBufferParameteriAPPLE(GL_ARRAY_BUFFER_ARB, GL_BUFFER_FLUSHING_UNMAP_APPLE, GL_FALSE);
+#endif
 						src = (U8*) glMapBufferARB(GL_ARRAY_BUFFER_ARB, GL_WRITE_ONLY_ARB);
 					}
 					else
@@ -1752,8 +1757,10 @@ volatile U8* LLVertexBuffer::mapIndexBuffer(S32 index, S32 count, bool map_range
 				{
 					if (map_range)
 					{
+#ifndef LL_MESA_HEADLESS
 						glBufferParameteriAPPLE(GL_ELEMENT_ARRAY_BUFFER_ARB, GL_BUFFER_SERIALIZED_MODIFY_APPLE, GL_FALSE);
 						glBufferParameteriAPPLE(GL_ELEMENT_ARRAY_BUFFER_ARB, GL_BUFFER_FLUSHING_UNMAP_APPLE, GL_FALSE);
+#endif
 						src = (U8*) glMapBufferARB(GL_ELEMENT_ARRAY_BUFFER_ARB, GL_WRITE_ONLY_ARB);
 					}
 					else
@@ -1882,7 +1889,9 @@ void LLVertexBuffer::unmapBuffer()
 						}
 						else if (gGLManager.mHasFlushBufferRange)
 						{
+#ifndef LL_MESA_HEADLESS
 							glFlushMappedBufferRangeAPPLE(GL_ARRAY_BUFFER_ARB, offset, length);
+#endif
 						}
 						stop_glerror();
 					}
@@ -1948,8 +1957,10 @@ void LLVertexBuffer::unmapBuffer()
 						else if (gGLManager.mHasFlushBufferRange)
 						{
 #ifdef GL_APPLE_flush_buffer_range
+#ifndef LL_MESA_HEADLESS
 							glFlushMappedBufferRangeAPPLE(GL_ELEMENT_ARRAY_BUFFER_ARB, offset, length);
 #endif
+#endif
 						}
 						stop_glerror();
 					}
@@ -2215,7 +2226,6 @@ void LLVertexBuffer::setBuffer(U32 data_mask)
 			setup = setup || bindBuffer || bindIndices;
 		}
 
-		bool error = false;
 		if (gDebugGL && !mGLArray)
 		{
 			GLint buff;
@@ -2224,7 +2234,6 @@ void LLVertexBuffer::setBuffer(U32 data_mask)
 			{
 				if (gDebugSession)
 				{
-					error = true;
 					gFailLog << "Invalid GL vertex buffer bound: " << buff << std::endl;
 				}
 				else
@@ -2240,7 +2249,6 @@ void LLVertexBuffer::setBuffer(U32 data_mask)
 				{
 					if (gDebugSession)
 					{
-						error = true;
 						gFailLog << "Invalid GL index buffer bound: " << buff <<  std::endl;
 					}
 					else