merge

195 files changed, 2620 insertions, 1344 deletions

diff --git a/indra/llcharacter/llcharacter.h b/indra/llcharacter/llcharacter.h
index e81a27c2bc..3ebb2bffb0 100644
--- a/indra/llcharacter/llcharacter.h
+++ b/indra/llcharacter/llcharacter.h
@@ -126,7 +126,7 @@ public:
 
 	virtual void addDebugText( const std::string& text ) = 0;
 
-	virtual const LLUUID&	getID() = 0;
+	virtual const LLUUID&	getID() const = 0;
 	//-------------------------------------------------------------------------
 	// End Interface
 	//-------------------------------------------------------------------------
diff --git a/indra/llcommon/llversionviewer.h b/indra/llcommon/llversionviewer.h
index 99ab053b25..a869c74189 100644
--- a/indra/llcommon/llversionviewer.h
+++ b/indra/llcommon/llversionviewer.h
@@ -28,8 +28,8 @@
 #define LL_LLVERSIONVIEWER_H
 
 const S32 LL_VERSION_MAJOR = 3;
-const S32 LL_VERSION_MINOR = 2;
-const S32 LL_VERSION_PATCH = 8;
+const S32 LL_VERSION_MINOR = 3;
+const S32 LL_VERSION_PATCH = 0;
 const S32 LL_VERSION_BUILD = 0;
 
 const char * const LL_CHANNEL = "Second Life Developer";
diff --git a/indra/llmath/llvolume.cpp b/indra/llmath/llvolume.cpp
index 0c6cf1dfae..761fc171c4 100644
--- a/indra/llmath/llvolume.cpp
+++ b/indra/llmath/llvolume.cpp
@@ -2078,6 +2078,7 @@ LLVolume::LLVolume(const LLVolumeParams &params, const F32 detail, const BOOL ge
 	mFaceMask = 0x0;
 	mDetail = detail;
 	mSculptLevel = -2;
+	mSurfaceArea = 1.f; //only calculated for sculpts, defaults to 1 for all other prims
 	mIsMeshAssetLoaded = FALSE;
 	mLODScaleBias.setVec(1,1,1);
 	mHullPoints = NULL;
@@ -3144,6 +3145,8 @@ void LLVolume::sculpt(U16 sculpt_width, U16 sculpt_height, S8 sculpt_components,
 		{
 			F32 area = sculptGetSurfaceArea();
 
+			mSurfaceArea = area;
+
 			const F32 SCULPT_MAX_AREA = 384.f;
 
 			if (area < SCULPT_MIN_AREA || area > SCULPT_MAX_AREA)
diff --git a/indra/llmath/llvolume.h b/indra/llmath/llvolume.h
index afd1ec5eed..76cf9de613 100644
--- a/indra/llmath/llvolume.h
+++ b/indra/llmath/llvolume.h
@@ -963,6 +963,7 @@ public:
 	S32	getNumFaces() const;
 	S32 getNumVolumeFaces() const							{ return mVolumeFaces.size(); }
 	F32 getDetail() const									{ return mDetail; }
+	F32 getSurfaceArea() const								{ return mSurfaceArea; }
 	const LLVolumeParams& getParams() const					{ return mParams; }
 	LLVolumeParams getCopyOfParams() const					{ return mParams; }
 	const LLProfile& getProfile() const						{ return *mProfilep; }
@@ -1065,6 +1066,7 @@ public:
 	BOOL mUnique;
 	F32 mDetail;
 	S32 mSculptLevel;
+	F32 mSurfaceArea; //unscaled surface area
 	BOOL mIsMeshAssetLoaded;
 	
 	LLVolumeParams mParams;
diff --git a/indra/llmessage/llcurl.cpp b/indra/llmessage/llcurl.cpp
index 3bcaffc275..bac3e6c426 100644
--- a/indra/llmessage/llcurl.cpp
+++ b/indra/llmessage/llcurl.cpp
@@ -548,6 +548,7 @@ LLCurl::Multi::Multi(F32 idle_time_out)
 	  mErrorCount(0),
 	  mState(STATE_READY),
 	  mDead(FALSE),
+	  mValid(TRUE),
 	  mMutexp(NULL),
 	  mDeletionMutexp(NULL),
 	  mEasyMutexp(NULL)
@@ -583,22 +584,33 @@ LLCurl::Multi::Multi(F32 idle_time_out)
 
 LLCurl::Multi::~Multi()
 {
-	cleanup() ;	
+	cleanup(true) ;	
+	
+	delete mDeletionMutexp ;
+	mDeletionMutexp = NULL ;	
 }
 
-void LLCurl::Multi::cleanup()
+void LLCurl::Multi::cleanup(bool deleted)
 {
 	if(!mCurlMultiHandle)
 	{
 		return ; //nothing to clean.
 	}
+	llassert_always(deleted || !mValid) ;
 
+	LLMutexLock lock(mDeletionMutexp);
+	
 	// Clean up active
 	for(easy_active_list_t::iterator iter = mEasyActiveList.begin();
 		iter != mEasyActiveList.end(); ++iter)
 	{
 		Easy* easy = *iter;
 		check_curl_multi_code(curl_multi_remove_handle(mCurlMultiHandle, easy->getCurlHandle()));
+
+		if(deleted)
+		{
+			easy->mResponder = NULL ; //avoid triggering mResponder.
+		}
 		delete easy;
 	}
 	mEasyActiveList.clear();
@@ -610,14 +622,12 @@ void LLCurl::Multi::cleanup()
 
 	check_curl_multi_code(LLCurl::deleteMultiHandle(mCurlMultiHandle));
 	mCurlMultiHandle = NULL ;
-
+	
 	delete mMutexp ;
 	mMutexp = NULL ;
-	delete mDeletionMutexp ;
-	mDeletionMutexp = NULL ;
 	delete mEasyMutexp ;
 	mEasyMutexp = NULL ;
-	
+
 	mQueued = 0 ;
 	mState = STATE_COMPLETED;
 	
@@ -644,10 +654,20 @@ void LLCurl::Multi::unlock()
 
 void LLCurl::Multi::markDead()
 {
-	LLMutexLock lock(mDeletionMutexp) ;
+	{
+		LLMutexLock lock(mDeletionMutexp) ;
 	
-	mDead = TRUE ;
-	LLCurl::getCurlThread()->setPriority(mHandle, LLQueuedThread::PRIORITY_URGENT) ; 
+		if(mCurlMultiHandle != NULL)
+		{
+			mDead = TRUE ;
+			LLCurl::getCurlThread()->setPriority(mHandle, LLQueuedThread::PRIORITY_URGENT) ; 
+
+			return;
+		}
+	}
+	
+	//not valid, delete it.
+	delete this;	
 }
 
 void LLCurl::Multi::setState(LLCurl::Multi::ePerformState state)
@@ -741,10 +761,14 @@ bool LLCurl::Multi::doPerform()
 		setState(STATE_COMPLETED) ;		
 		mIdleTimer.reset() ;
 	}
-	else if(mIdleTimer.getElapsedTimeF32() > mIdleTimeOut) //idle for too long, remove it.
+	else if(!mValid && mIdleTimer.getElapsedTimeF32() > mIdleTimeOut) //idle for too long, remove it.
 	{
 		dead = true ;
 	}
+	else if(mValid && mIdleTimer.getElapsedTimeF32() > mIdleTimeOut - 1.f) //idle for too long, mark it invalid.
+	{
+		mValid = FALSE ;
+	}
 
 	return dead ;
 }
@@ -966,14 +990,7 @@ void LLCurlThread::killMulti(LLCurl::Multi* multi)
 		return ;
 	}
 
-	if(multi->isValid())
-	{
-		multi->markDead() ;
-	}
-	else
-	{
-		deleteMulti(multi) ;
-	}
+	multi->markDead() ;
 }
 
 //private
@@ -992,6 +1009,10 @@ void LLCurlThread::deleteMulti(LLCurl::Multi* multi)
 void LLCurlThread::cleanupMulti(LLCurl::Multi* multi) 
 {
 	multi->cleanup() ;
+	if(multi->isDead()) //check if marked dead during cleaning up.
+	{
+		deleteMulti(multi) ;
+	}
 }
 
 //------------------------------------------------------------
diff --git a/indra/llmessage/llcurl.h b/indra/llmessage/llcurl.h
index fd664c0fa1..d6a7714d4c 100644
--- a/indra/llmessage/llcurl.h
+++ b/indra/llmessage/llcurl.h
@@ -304,7 +304,7 @@ public:
 	ePerformState getState() ;
 	
 	bool isCompleted() ;
-	bool isValid() {return mCurlMultiHandle != NULL ;}
+	bool isValid() {return mCurlMultiHandle != NULL && mValid;}
 	bool isDead() {return mDead;}
 
 	bool waitToComplete() ;
@@ -318,7 +318,7 @@ public:
 	
 private:
 	void easyFree(LLCurl::Easy*);
-	void cleanup() ;
+	void cleanup(bool deleted = false) ;
 	
 	CURLM* mCurlMultiHandle;
 
@@ -333,6 +333,7 @@ private:
 	ePerformState mState;
 
 	BOOL mDead ;
+	BOOL mValid ;
 	LLMutex* mMutexp ;
 	LLMutex* mDeletionMutexp ;
 	LLMutex* mEasyMutexp ;
diff --git a/indra/llrender/llgl.cpp b/indra/llrender/llgl.cpp
index 946e602fee..3f78ab20d0 100644
--- a/indra/llrender/llgl.cpp
+++ b/indra/llrender/llgl.cpp
@@ -94,9 +94,15 @@ void APIENTRY gl_debug_callback(GLenum source,
 	llwarns << "Severity: " << std::hex << severity << llendl;
 	llwarns << "Message: " << message << llendl;
 	llwarns << "-----------------------" << llendl;
+	if (severity == GL_DEBUG_SEVERITY_HIGH_ARB)
+	{
+		llerrs << "Halting on GL Error" << llendl;
+	}
 }
 #endif
 
+void parse_glsl_version(S32& major, S32& minor);
+
 void ll_init_fail_log(std::string filename)
 {
 	gFailLog.open(filename.c_str());
@@ -295,6 +301,7 @@ PFNGLGETACTIVEUNIFORMARBPROC glGetActiveUniformARB = NULL;
 PFNGLGETUNIFORMFVARBPROC glGetUniformfvARB = NULL;
 PFNGLGETUNIFORMIVARBPROC glGetUniformivARB = NULL;
 PFNGLGETSHADERSOURCEARBPROC glGetShaderSourceARB = NULL;
+PFNGLVERTEXATTRIBIPOINTERPROC glVertexAttribIPointer = NULL;
 
 #if LL_WINDOWS
 PFNWGLCREATECONTEXTATTRIBSARBPROC wglCreateContextAttribsARB = NULL;
@@ -443,7 +450,8 @@ LLGLManager::LLGLManager() :
 	mDriverVersionMinor(0),
 	mDriverVersionRelease(0),
 	mGLVersion(1.0f),
-		
+	mGLSLVersionMajor(0),
+	mGLSLVersionMinor(0),		
 	mVRAM(0),
 	mGLMaxVertexRange(0),
 	mGLMaxIndexRange(0)
@@ -554,6 +562,29 @@ bool LLGLManager::initGL()
 
 	mGLVersion = mDriverVersionMajor + mDriverVersionMinor * .1f;
 
+	if (mGLVersion >= 2.f)
+	{
+		parse_glsl_version(mGLSLVersionMajor, mGLSLVersionMinor);
+
+#if LL_DARWIN
+		//never use GLSL greater than 1.20 on OSX
+		if (mGLSLVersionMajor > 1 || mGLSLVersionMinor >= 30)
+		{
+			mGLSLVersionMajor = 1;
+			mGLSLVersionMinor = 20;
+		}
+#endif
+	}
+
+	if (mGLVersion >= 2.1f && LLImageGL::sCompressTextures)
+	{ //use texture compression
+		glHint(GL_TEXTURE_COMPRESSION_HINT, GL_NICEST);
+	}
+	else
+	{ //GL version is < 3.0, always disable texture compression
+		LLImageGL::sCompressTextures = false;
+	}
+	
 	// Trailing space necessary to keep "nVidia Corpor_ati_on" cards
 	// from being recognized as ATI.
 	if (mGLVendor.substr(0,4) == "ATI ")
@@ -1300,6 +1331,7 @@ void LLGLManager::initExtensions()
 		glVertexAttrib4uivARB = (PFNGLVERTEXATTRIB4UIVARBPROC) GLH_EXT_GET_PROC_ADDRESS("glVertexAttrib4uivARB");
 		glVertexAttrib4usvARB = (PFNGLVERTEXATTRIB4USVARBPROC) GLH_EXT_GET_PROC_ADDRESS("glVertexAttrib4usvARB");
 		glVertexAttribPointerARB = (PFNGLVERTEXATTRIBPOINTERARBPROC) GLH_EXT_GET_PROC_ADDRESS("glVertexAttribPointerARB");
+		glVertexAttribIPointer = (PFNGLVERTEXATTRIBIPOINTERPROC) GLH_EXT_GET_PROC_ADDRESS("glVertexAttribIPointer");
 		glEnableVertexAttribArrayARB = (PFNGLENABLEVERTEXATTRIBARRAYARBPROC) GLH_EXT_GET_PROC_ADDRESS("glEnableVertexAttribArrayARB");
 		glDisableVertexAttribArrayARB = (PFNGLDISABLEVERTEXATTRIBARRAYARBPROC) GLH_EXT_GET_PROC_ADDRESS("glDisableVertexAttribArrayARB");
 		glProgramStringARB = (PFNGLPROGRAMSTRINGARBPROC) GLH_EXT_GET_PROC_ADDRESS("glProgramStringARB");
@@ -2098,6 +2130,55 @@ void parse_gl_version( S32* major, S32* minor, S32* release, std::string* vendor
 	}
 }
 
+
+void parse_glsl_version(S32& major, S32& minor)
+{
+	// GL_SHADING_LANGUAGE_VERSION returns a null-terminated string with the format: 
+	// <major>.<minor>[.<release>] [<vendor specific>]
+
+	const char* version = (const char*) glGetString(GL_SHADING_LANGUAGE_VERSION);
+	major = 0;
+	minor = 0;
+	
+	if( !version )
+	{
+		return;
+	}
+
+	std::string ver_copy( version );
+	S32 len = (S32)strlen( version );	/* Flawfinder: ignore */
+	S32 i = 0;
+	S32 start;
+	// Find the major version
+	start = i;
+	for( ; i < len; i++ )
+	{
+		if( '.' == version[i] )
+		{
+			break;
+		}
+	}
+	std::string major_str = ver_copy.substr(start,i-start);
+	LLStringUtil::convertToS32(major_str, major);
+
+	if( '.' == version[i] )
+	{
+		i++;
+	}
+
+	// Find the minor version
+	start = i;
+	for( ; i < len; i++ )
+	{
+		if( ('.' == version[i]) || isspace(version[i]) )
+		{
+			break;
+		}
+	}
+	std::string minor_str = ver_copy.substr(start,i-start);
+	LLStringUtil::convertToS32(minor_str, minor);
+}
+
 LLGLUserClipPlane::LLGLUserClipPlane(const LLPlane& p, const glh::matrix4f& modelview, const glh::matrix4f& projection, bool apply)
 {
 	mApply = apply;
diff --git a/indra/llrender/llgl.h b/indra/llrender/llgl.h
index 6a147b8e19..5a33c98708 100644
--- a/indra/llrender/llgl.h
+++ b/indra/llrender/llgl.h
@@ -138,6 +138,8 @@ public:
 	S32 mDriverVersionMinor;
 	S32 mDriverVersionRelease;
 	F32 mGLVersion; // e.g = 1.4
+	S32 mGLSLVersionMajor;
+	S32 mGLSLVersionMinor;
 	std::string mDriverVersionVendorString;
 
 	S32 mVRAM; // VRAM in MB
diff --git a/indra/llrender/llglheaders.h b/indra/llrender/llglheaders.h
index 10aad202e1..d61ec707f0 100644
--- a/indra/llrender/llglheaders.h
+++ b/indra/llrender/llglheaders.h
@@ -199,6 +199,7 @@ extern PFNGLVERTEXATTRIB4UBVARBPROC glVertexAttrib4ubvARB;
 extern PFNGLVERTEXATTRIB4UIVARBPROC glVertexAttrib4uivARB;
 extern PFNGLVERTEXATTRIB4USVARBPROC glVertexAttrib4usvARB;
 extern PFNGLVERTEXATTRIBPOINTERARBPROC glVertexAttribPointerARB;
+extern PFNGLVERTEXATTRIBIPOINTERPROC glVertexAttribIPointer;
 extern PFNGLENABLEVERTEXATTRIBARRAYARBPROC glEnableVertexAttribArrayARB;
 extern PFNGLDISABLEVERTEXATTRIBARRAYARBPROC glDisableVertexAttribArrayARB;
 extern PFNGLPROGRAMSTRINGARBPROC glProgramStringARB;
@@ -460,6 +461,7 @@ extern PFNGLVERTEXATTRIB4UBVARBPROC glVertexAttrib4ubvARB;
 extern PFNGLVERTEXATTRIB4UIVARBPROC glVertexAttrib4uivARB;
 extern PFNGLVERTEXATTRIB4USVARBPROC glVertexAttrib4usvARB;
 extern PFNGLVERTEXATTRIBPOINTERARBPROC glVertexAttribPointerARB;
+extern PFNGLVERTEXATTRIBIPOINTERPROC glVertexAttribIPointer;
 extern PFNGLENABLEVERTEXATTRIBARRAYARBPROC glEnableVertexAttribArrayARB;
 extern PFNGLDISABLEVERTEXATTRIBARRAYARBPROC glDisableVertexAttribArrayARB;
 extern PFNGLPROGRAMSTRINGARBPROC glProgramStringARB;
@@ -693,6 +695,7 @@ extern PFNGLVERTEXATTRIB4UBVARBPROC glVertexAttrib4ubvARB;
 extern PFNGLVERTEXATTRIB4UIVARBPROC glVertexAttrib4uivARB;
 extern PFNGLVERTEXATTRIB4USVARBPROC glVertexAttrib4usvARB;
 extern PFNGLVERTEXATTRIBPOINTERARBPROC glVertexAttribPointerARB;
+extern PFNGLVERTEXATTRIBIPOINTERPROC glVertexAttribIPointer;
 extern PFNGLENABLEVERTEXATTRIBARRAYARBPROC glEnableVertexAttribArrayARB;
 extern PFNGLDISABLEVERTEXATTRIBARRAYARBPROC glDisableVertexAttribArrayARB;
 extern PFNGLPROGRAMSTRINGARBPROC glProgramStringARB;
diff --git a/indra/llrender/llglslshader.cpp b/indra/llrender/llglslshader.cpp
index 6b2852670a..4b7e639aed 100644
--- a/indra/llrender/llglslshader.cpp
+++ b/indra/llrender/llglslshader.cpp
@@ -64,10 +64,23 @@ BOOL shouldChange(const LLVector4& v1, const LLVector4& v2)
 }
 
 LLShaderFeatures::LLShaderFeatures()
-: calculatesLighting(false), isShiny(false), isFullbright(false), hasWaterFog(false),
-hasTransport(false), hasSkinning(false), hasObjectSkinning(false), hasAtmospherics(false), isSpecular(false),
-hasGamma(false), hasLighting(false), isAlphaLighting(false), calculatesAtmospherics(false), mIndexedTextureChannels(0), disableTextureIndex(false),
-hasAlphaMask(false)
+	: atmosphericHelpers(false)
+	, calculatesLighting(false)
+	, calculatesAtmospherics(false)
+	, hasLighting(false)
+	, isAlphaLighting(false)
+	, isShiny(false)
+	, isFullbright(false)
+	, isSpecular(false)
+	, hasWaterFog(false)
+	, hasTransport(false)
+	, hasSkinning(false)
+	, hasObjectSkinning(false)
+	, hasAtmospherics(false)
+	, hasGamma(false)
+	, mIndexedTextureChannels(0)
+	, disableTextureIndex(false)
+	, hasAlphaMask(false)
 {
 }
 
@@ -96,7 +109,12 @@ void LLGLSLShader::unload()
 		glGetAttachedObjectsARB(mProgramObject, 1024, &count, obj);
 		for (GLsizei i = 0; i < count; i++)
 		{
-			glDeleteObjectARB(obj[i]);
+#if !LL_DARWIN
+			if (glIsProgramARB(obj[i]))
+#endif
+			{
+				glDeleteObjectARB(obj[i]);
+			}
 		}
 
 		glDeleteObjectARB(mProgramObject);
@@ -148,8 +166,9 @@ BOOL LLGLSLShader::createShader(vector<string> * attributes,
 		return FALSE;
 	}
 
-	if (gGLManager.mGLVersion < 3.1f)
-	{ //attachShaderFeatures may have set the number of indexed texture channels, so set to 1 again
+	if (gGLManager.mGLSLVersionMajor < 2 && gGLManager.mGLSLVersionMinor < 3)
+	{ //indexed texture rendering requires GLSL 1.3 or later
+		//attachShaderFeatures may have set the number of indexed texture channels, so set to 1 again
 		mFeatures.mIndexedTextureChannels = llmin(mFeatures.mIndexedTextureChannels, 1);
 	}
 
diff --git a/indra/llrender/llglslshader.h b/indra/llrender/llglslshader.h
index 00b4b0dbd4..7873fe3c4e 100644
--- a/indra/llrender/llglslshader.h
+++ b/indra/llrender/llglslshader.h
@@ -33,6 +33,7 @@
 class LLShaderFeatures
 {
 public:
+	bool atmosphericHelpers;
 	bool calculatesLighting;
 	bool calculatesAtmospherics;
 	bool hasLighting; // implies no transport (it's possible to have neither though)
diff --git a/indra/llrender/llimagegl.cpp b/indra/llrender/llimagegl.cpp
index 78591ddd38..17131c9d8a 100644
--- a/indra/llrender/llimagegl.cpp
+++ b/indra/llrender/llimagegl.cpp
@@ -57,6 +57,7 @@ BOOL LLImageGL::sGlobalUseAnisotropic	= FALSE;
 F32 LLImageGL::sLastFrameTime			= 0.f;
 BOOL LLImageGL::sAllowReadBackRaw       = FALSE ;
 LLImageGL* LLImageGL::sDefaultGLTexture = NULL ;
+bool LLImageGL::sCompressTextures = false;
 
 std::set<LLImageGL*> LLImageGL::sImageList;
 
@@ -477,6 +478,8 @@ void LLImageGL::init(BOOL usemipmaps)
 	mDiscardLevelInAtlas = -1 ;
 	mTexelsInAtlas = 0 ;
 	mTexelsInGLTexture = 0 ;
+
+	mAllowCompression = true;
 	
 	mTarget = GL_TEXTURE_2D;
 	mBindTarget = LLTexUnit::TT_TEXTURE;
@@ -705,7 +708,7 @@ void LLImageGL::setImage(const U8* data_in, BOOL data_hasmips)
 						stop_glerror();
 					}
 						
-					LLImageGL::setManualImage(mTarget, gl_level, mFormatInternal, w, h, mFormatPrimary, GL_UNSIGNED_BYTE, (GLvoid*)data_in);
+					LLImageGL::setManualImage(mTarget, gl_level, mFormatInternal, w, h, mFormatPrimary, GL_UNSIGNED_BYTE, (GLvoid*)data_in, mAllowCompression);
 					if (gl_level == 0)
 					{
 						analyzeAlpha(data_in, w, h);
@@ -747,7 +750,7 @@ void LLImageGL::setImage(const U8* data_in, BOOL data_hasmips)
 					LLImageGL::setManualImage(mTarget, 0, mFormatInternal,
 								 w, h, 
 								 mFormatPrimary, mFormatType,
-								 data_in);
+								 data_in, mAllowCompression);
 					analyzeAlpha(data_in, w, h);
 					stop_glerror();
 
@@ -805,7 +808,7 @@ void LLImageGL::setImage(const U8* data_in, BOOL data_hasmips)
 							stop_glerror();
 						}
 
-						LLImageGL::setManualImage(mTarget, m, mFormatInternal, w, h, mFormatPrimary, mFormatType, cur_mip_data);
+						LLImageGL::setManualImage(mTarget, m, mFormatInternal, w, h, mFormatPrimary, mFormatType, cur_mip_data, mAllowCompression);
 						if (m == 0)
 						{
 							analyzeAlpha(data_in, w, h);
@@ -863,7 +866,7 @@ void LLImageGL::setImage(const U8* data_in, BOOL data_hasmips)
 			}
 
 			LLImageGL::setManualImage(mTarget, 0, mFormatInternal, w, h,
-						 mFormatPrimary, mFormatType, (GLvoid *)data_in);
+						 mFormatPrimary, mFormatType, (GLvoid *)data_in, mAllowCompression);
 			analyzeAlpha(data_in, w, h);
 			
 			updatePickMask(w, h, data_in);
@@ -1110,7 +1113,7 @@ void LLImageGL::deleteTextures(S32 numTextures, U32 *textures, bool immediate)
 }
 
 // static
-void LLImageGL::setManualImage(U32 target, S32 miplevel, S32 intformat, S32 width, S32 height, U32 pixformat, U32 pixtype, const void *pixels)
+void LLImageGL::setManualImage(U32 target, S32 miplevel, S32 intformat, S32 width, S32 height, U32 pixformat, U32 pixtype, const void *pixels, bool allow_compression)
 {
 	bool use_scratch = false;
 	U32* scratch = NULL;
@@ -1173,6 +1176,36 @@ void LLImageGL::setManualImage(U32 target, S32 miplevel, S32 intformat, S32 widt
 		}
 	}
 
+	if (LLImageGL::sCompressTextures && allow_compression)
+	{
+		switch (intformat)
+		{
+			case GL_RGB: 
+			case GL_RGB8:
+				intformat = GL_COMPRESSED_RGB; 
+				break;
+			case GL_RGBA:
+			case GL_RGBA8:
+				intformat = GL_COMPRESSED_RGBA; 
+				break;
+			case GL_LUMINANCE:
+			case GL_LUMINANCE8:
+				intformat = GL_COMPRESSED_LUMINANCE;
+				break;
+			case GL_LUMINANCE_ALPHA:
+			case GL_LUMINANCE8_ALPHA8:
+				intformat = GL_COMPRESSED_LUMINANCE_ALPHA;
+				break;
+			case GL_ALPHA:
+			case GL_ALPHA8:
+				intformat = GL_COMPRESSED_ALPHA;
+				break;
+			default:
+				llwarns << "Could not compress format: " << std::hex << intformat << llendl;
+				break;
+		}
+	}
+
 	stop_glerror();
 	glTexImage2D(target, miplevel, intformat, width, height, 0, pixformat, pixtype, use_scratch ? scratch : pixels);
 	stop_glerror();
diff --git a/indra/llrender/llimagegl.h b/indra/llrender/llimagegl.h
index 2cfb15b0d9..e23005fe29 100644
--- a/indra/llrender/llimagegl.h
+++ b/indra/llrender/llimagegl.h
@@ -94,12 +94,13 @@ public:
 	
 	void setSize(S32 width, S32 height, S32 ncomponents);
 	void setComponents(S32 ncomponents) { mComponents = (S8)ncomponents ;}
+	void setAllowCompression(bool allow) { mAllowCompression = allow; }
 
 	// These 3 functions currently wrap glGenTextures(), glDeleteTextures(), and glTexImage2D() 
 	// for tracking purposes and will be deprecated in the future
 	static void generateTextures(S32 numTextures, U32 *textures);
 	static void deleteTextures(S32 numTextures, U32 *textures, bool immediate = false);
-	static void setManualImage(U32 target, S32 miplevel, S32 intformat, S32 width, S32 height, U32 pixformat, U32 pixtype, const void *pixels);
+	static void setManualImage(U32 target, S32 miplevel, S32 intformat, S32 width, S32 height, U32 pixformat, U32 pixtype, const void *pixels, bool allow_compression = true);
 
 	BOOL createGLTexture() ;
 	BOOL createGLTexture(S32 discard_level, const LLImageRaw* imageraw, S32 usename = 0, BOOL to_create = TRUE, 
@@ -209,6 +210,8 @@ private:
 	U32      mTexelsInAtlas ;
 	U32      mTexelsInGLTexture;
 
+	bool mAllowCompression;
+
 protected:
 	LLGLenum mTarget;		// Normally GL_TEXTURE2D, sometimes something else (ex. cube maps)
 	LLTexUnit::eTextureType mBindTarget;	// Normally TT_TEXTURE, sometimes something else (ex. cube maps)
@@ -246,7 +249,7 @@ public:
 	static BOOL sGlobalUseAnisotropic;
 	static LLImageGL* sDefaultGLTexture ;	
 	static BOOL sAutomatedTest;
-
+	static bool sCompressTextures;			//use GL texture compression
 #if DEBUG_MISS
 	BOOL mMissed; // Missed on last bind?
 	BOOL getMissed() const { return mMissed; };
diff --git a/indra/llrender/llrender.cpp b/indra/llrender/llrender.cpp
index 03a9884c2b..b0ddacbb05 100644
--- a/indra/llrender/llrender.cpp
+++ b/indra/llrender/llrender.cpp
@@ -997,7 +997,7 @@ void LLLightState::setSpotDirection(const LLVector3& direction)
 		const glh::matrix4f& mat = gGL.getModelviewMatrix();
 		mat.mult_matrix_dir(dir);
 
-		mSpotDirection.set(direction);
+		mSpotDirection.set(dir.v);
 	}
 }
 
diff --git a/indra/llrender/llrendertarget.cpp b/indra/llrender/llrendertarget.cpp
index ef2a7395da..780f1dc484 100644
--- a/indra/llrender/llrendertarget.cpp
+++ b/indra/llrender/llrendertarget.cpp
@@ -143,7 +143,7 @@ bool LLRenderTarget::addColorAttachment(U32 color_fmt)
 
 	{
 		clear_glerror();
-		LLImageGL::setManualImage(LLTexUnit::getInternalType(mUsage), 0, color_fmt, mResX, mResY, GL_RGBA, GL_UNSIGNED_BYTE, NULL);
+		LLImageGL::setManualImage(LLTexUnit::getInternalType(mUsage), 0, color_fmt, mResX, mResY, GL_RGBA, GL_UNSIGNED_BYTE, NULL, false);
 		if (glGetError() != GL_NO_ERROR)
 		{
 			llwarns << "Could not allocate color buffer for render target." << llendl;
@@ -223,7 +223,7 @@ bool LLRenderTarget::allocateDepth()
 		U32 internal_type = LLTexUnit::getInternalType(mUsage);
 		stop_glerror();
 		clear_glerror();
-		LLImageGL::setManualImage(internal_type, 0, GL_DEPTH_COMPONENT24, mResX, mResY, GL_DEPTH_COMPONENT, GL_UNSIGNED_INT, NULL);
+		LLImageGL::setManualImage(internal_type, 0, GL_DEPTH_COMPONENT24, mResX, mResY, GL_DEPTH_COMPONENT, GL_UNSIGNED_INT, NULL, false);
 		gGL.getTexUnit(0)->setTextureFilteringOption(LLTexUnit::TFO_POINT);
 	}
 
diff --git a/indra/llrender/llshadermgr.cpp b/indra/llrender/llshadermgr.cpp
index 1a03aeebb7..7d384450e6 100644
--- a/indra/llrender/llshadermgr.cpp
+++ b/indra/llrender/llshadermgr.cpp
@@ -94,13 +94,16 @@ BOOL LLShaderMgr::attachShaderFeatures(LLGLSLShader * shader)
 		}
 	}
 
-	if (features->calculatesLighting)
+	if (features->calculatesLighting || features->atmosphericHelpers)
 	{
 		if (!shader->attachObject("windlight/atmosphericsHelpersV.glsl"))
 		{
 			return FALSE;
 		}
+	}
 		
+	if (features->calculatesLighting)
+	{
 		if (features->isSpecular)
 		{
 			if (!shader->attachObject("lighting/lightFuncSpecularV.glsl"))
@@ -572,34 +575,46 @@ GLhandleARB LLShaderMgr::loadShaderFile(const std::string& filename, S32 & shade
 	GLcharARB* text[4096];
 	GLuint count = 0;
 
-	F32 version = gGLManager.mGLVersion;
-
-//hack to never use GLSL > 1.20 on OSX
-#if LL_DARWIN
-	version = llmin(version, 2.9f);
-#endif
-
-	if (version < 2.1f)
-	{
-		text[count++] = strdup("#version 110\n");
-		text[count++] = strdup("#define ATTRIBUTE attribute\n");
-		text[count++] = strdup("#define VARYING varying\n");
-	}
-	else if (version < 3.3f)
+	S32 major_version = gGLManager.mGLSLVersionMajor;
+	S32 minor_version = gGLManager.mGLSLVersionMinor;
+	
+	if (major_version == 1 && minor_version < 30)
 	{
-		//set version to 1.20
-		text[count++] = strdup("#version 120\n");
-		text[count++] = strdup("#define FXAA_GLSL_120 1\n");
-		text[count++] = strdup("#define FXAA_FAST_PIXEL_OFFSET 0\n");
-		text[count++] = strdup("#define ATTRIBUTE attribute\n");
-		text[count++] = strdup("#define VARYING varying\n");
+		if (minor_version < 10)
+		{
+			//should NEVER get here -- if major version is 1 and minor version is less than 10, 
+			// viewer should never attempt to use shaders, continuing will result in undefined behavior
+			llerrs << "Unsupported GLSL Version." << llendl;
+		}
+
+		if (minor_version <= 19)
+		{
+			text[count++] = strdup("#version 110\n");
+			text[count++] = strdup("#define ATTRIBUTE attribute\n");
+			text[count++] = strdup("#define VARYING varying\n");
+			text[count++] = strdup("#define VARYING_FLAT varying\n");
+		}
+		else if (minor_version <= 29)
+		{
+			//set version to 1.20
+			text[count++] = strdup("#version 120\n");
+			text[count++] = strdup("#define FXAA_GLSL_120 1\n");
+			text[count++] = strdup("#define FXAA_FAST_PIXEL_OFFSET 0\n");
+			text[count++] = strdup("#define ATTRIBUTE attribute\n");
+			text[count++] = strdup("#define VARYING varying\n");
+			text[count++] = strdup("#define VARYING_FLAT varying\n");
+		}
 	}
 	else
 	{  
-		if (version < 4.f)
+		if (major_version < 4)
 		{
 			//set version to 1.30
 			text[count++] = strdup("#version 130\n");
+
+			//some implementations of GLSL 1.30 require integer precision be explicitly declared
+			text[count++] = strdup("precision mediump int;\n");
+			text[count++] = strdup("precision highp float;\n");
 		}
 		else
 		{ //set version to 400
@@ -615,16 +630,25 @@ GLhandleARB LLShaderMgr::loadShaderFile(const std::string& filename, S32 & shade
 		{ //"varying" state is "out" in a vertex program, "in" in a fragment program 
 			// ("varying" is deprecated after version 1.20)
 			text[count++] = strdup("#define VARYING out\n");
+			text[count++] = strdup("#define VARYING_FLAT flat out\n");
 		}
 		else
 		{
 			text[count++] = strdup("#define VARYING in\n");
+			text[count++] = strdup("#define VARYING_FLAT flat in\n");
 		}
 
 		//backwards compatibility with legacy texture lookup syntax
+		text[count++] = strdup("#define texture2D texture\n");
 		text[count++] = strdup("#define textureCube texture\n");
 		text[count++] = strdup("#define texture2DLod textureLod\n");
 		text[count++] = strdup("#define	shadow2D(a,b) vec2(texture(a,b))\n");
+
+		if (major_version > 1 || minor_version >= 40)
+		{ //GLSL 1.40 replaces texture2DRect et al with texture
+			text[count++] = strdup("#define texture2DRect texture\n");
+			text[count++] = strdup("#define shadow2DRect(a,b) vec2(texture(a,b))\n");
+		}
 	}
 
 	//copy preprocessor definitions into buffer
@@ -648,22 +672,24 @@ GLhandleARB LLShaderMgr::loadShaderFile(const std::string& filename, S32 & shade
 		.
 		uniform sampler2D texN;
 		
-		VARYING float vary_texture_index;
+		VARYING_FLAT ivec4 vary_texture_index;
+
+		vec4 ret = vec4(1,0,1,1);
 
 		vec4 diffuseLookup(vec2 texcoord)
 		{
-			switch (int(vary_texture_index+0.25))
+			switch (vary_texture_index.r))
 			{
-				case 0: return texture2D(tex0, texcoord);
-				case 1: return texture2D(tex1, texcoord);
-				case 2: return texture2D(tex2, texcoord);
+				case 0: ret = texture2D(tex0, texcoord); break;
+				case 1: ret = texture2D(tex1, texcoord); break;
+				case 2: ret = texture2D(tex2, texcoord); break;
 				.
 				.
 				.
-				case N: return texture2D(texN, texcoord);
+				case N: return texture2D(texN, texcoord); break;
 			}
 
-			return vec4(0,0,0,0);
+			return ret;
 		}
 		*/
 
@@ -676,7 +702,7 @@ GLhandleARB LLShaderMgr::loadShaderFile(const std::string& filename, S32 & shade
 
 		if (texture_index_channels > 1)
 		{
-			text[count++] = strdup("VARYING float vary_texture_index;\n");
+			text[count++] = strdup("VARYING_FLAT ivec4 vary_texture_index;\n");
 		}
 
 		text[count++] = strdup("vec4 diffuseLookup(vec2 texcoord)\n");
@@ -688,45 +714,28 @@ GLhandleARB LLShaderMgr::loadShaderFile(const std::string& filename, S32 & shade
 			text[count++] = strdup("return texture2D(tex0, texcoord);\n");
 			text[count++] = strdup("}\n");
 		}
-		else if (gGLManager.mGLVersion >= 3.f)
-		{ 
-			text[count++] = strdup("\tswitch (int(vary_texture_index+0.25))\n");
+		else if (major_version > 1 || minor_version >= 30)
+		{  //switches are supported in GLSL 1.30 and later
+			text[count++] = strdup("\tvec4 ret = vec4(1,0,1,1);\n");
+			text[count++] = strdup("\tswitch (vary_texture_index.r)\n");
 			text[count++] = strdup("\t{\n");
 		
 			//switch body
 			for (S32 i = 0; i < texture_index_channels; ++i)
 			{
-				std::string case_str = llformat("\t\tcase %d: return texture2D(tex%d, texcoord);\n", i, i);
+				std::string case_str = llformat("\t\tcase %d: ret = texture2D(tex%d, texcoord); break;\n", i, i);
 				text[count++] = strdup(case_str.c_str());
 			}
 
 			text[count++] = strdup("\t}\n");
-			text[count++] = strdup("\treturn vec4(1,0,1,1);\n");
+			text[count++] = strdup("\treturn ret;\n");
 			text[count++] = strdup("}\n");
 		}
 		else
-		{
-			//switches aren't supported, make block that looks like:
-			/*
-				int ti = int(vary_texture_index+0.25);
-				if (ti == 0) return texture2D(tex0, texcoord);
-				if (ti == 1) return texture2D(tex1, texcoord);
-				.
-				.
-				.
-				if (ti == N) return texture2D(texN, texcoord);
-			*/
-				
-			text[count++] = strdup("int ti = int(vary_texture_index+0.25);\n");
-			for (S32 i = 0; i < texture_index_channels; ++i)
-			{
-				std::string if_str = llformat("if (ti == %d) return texture2D(tex%d, texcoord);\n", i, i);
-				text[count++] = strdup(if_str.c_str());
-			}
-
-			text[count++] = strdup("\treturn vec4(1,0,1,1);\n");
-			text[count++] = strdup("}\n");
-		}			
+		{ //should never get here.  Indexed texture rendering requires GLSL 1.30 or later 
+			// (for passing integers between vertex and fragment shaders)
+			llerrs << "Indexed texture rendering requires GLSL 1.30 or later." << llendl;
+		}
 	}
 
 	//copy file into memory
@@ -1067,6 +1076,8 @@ void LLShaderMgr::initAttribsAndUniforms()
 	mReservedUniforms.push_back("magnification");
 	mReservedUniforms.push_back("max_cof");
 	mReservedUniforms.push_back("res_scale");
+	mReservedUniforms.push_back("dof_width");
+	mReservedUniforms.push_back("dof_height");
 
 	mReservedUniforms.push_back("depthMap");
 	mReservedUniforms.push_back("shadowMap0");
diff --git a/indra/llrender/llshadermgr.h b/indra/llrender/llshadermgr.h
index 950e6c9c2f..e28bda6de2 100644
--- a/indra/llrender/llshadermgr.h
+++ b/indra/llrender/llshadermgr.h
@@ -142,6 +142,8 @@ public:
 		DOF_MAGNIFICATION,
 		DOF_MAX_COF,
 		DOF_RES_SCALE,
+		DOF_WIDTH,
+		DOF_HEIGHT,
 
 		DEFERRED_DEPTH,
 		DEFERRED_SHADOW0,
diff --git a/indra/llrender/llvertexbuffer.cpp b/indra/llrender/llvertexbuffer.cpp
index 20a450fbfb..8b5503229f 100644
--- a/indra/llrender/llvertexbuffer.cpp
+++ b/indra/llrender/llvertexbuffer.cpp
@@ -53,31 +53,31 @@ U32 nhpo2(U32 v)
 //============================================================================
 
 //static
-LLVBOPool LLVertexBuffer::sStreamVBOPool;
-LLVBOPool LLVertexBuffer::sDynamicVBOPool;
-LLVBOPool LLVertexBuffer::sStreamIBOPool;
-LLVBOPool LLVertexBuffer::sDynamicIBOPool;
+LLVBOPool LLVertexBuffer::sStreamVBOPool(GL_STREAM_DRAW_ARB, GL_ARRAY_BUFFER_ARB);
+LLVBOPool LLVertexBuffer::sDynamicVBOPool(GL_DYNAMIC_DRAW_ARB, GL_ARRAY_BUFFER_ARB);
+LLVBOPool LLVertexBuffer::sStreamIBOPool(GL_STREAM_DRAW_ARB, GL_ELEMENT_ARRAY_BUFFER_ARB);
+LLVBOPool LLVertexBuffer::sDynamicIBOPool(GL_DYNAMIC_DRAW_ARB, GL_ELEMENT_ARRAY_BUFFER_ARB);
 U32 LLVBOPool::sBytesPooled = 0;
 
-LLPrivateMemoryPool* LLVertexBuffer::sPrivatePoolp = NULL ;
+LLPrivateMemoryPool* LLVertexBuffer::sPrivatePoolp = NULL;
 U32 LLVertexBuffer::sBindCount = 0;
 U32 LLVertexBuffer::sSetCount = 0;
 S32 LLVertexBuffer::sCount = 0;
 S32 LLVertexBuffer::sGLCount = 0;
 S32 LLVertexBuffer::sMappedCount = 0;
-BOOL LLVertexBuffer::sDisableVBOMapping = FALSE ;
-BOOL LLVertexBuffer::sEnableVBOs = TRUE;
+bool LLVertexBuffer::sDisableVBOMapping = false;
+bool LLVertexBuffer::sEnableVBOs = true;
 U32 LLVertexBuffer::sGLRenderBuffer = 0;
 U32 LLVertexBuffer::sGLRenderArray = 0;
 U32 LLVertexBuffer::sGLRenderIndices = 0;
 U32 LLVertexBuffer::sLastMask = 0;
-BOOL LLVertexBuffer::sVBOActive = FALSE;
-BOOL LLVertexBuffer::sIBOActive = FALSE;
+bool LLVertexBuffer::sVBOActive = false;
+bool LLVertexBuffer::sIBOActive = false;
 U32 LLVertexBuffer::sAllocatedBytes = 0;
-BOOL LLVertexBuffer::sMapped = FALSE;
-BOOL LLVertexBuffer::sUseStreamDraw = TRUE;
-BOOL LLVertexBuffer::sUseVAO = FALSE;
-BOOL LLVertexBuffer::sPreferStreamDraw = FALSE;
+bool LLVertexBuffer::sMapped = false;
+bool LLVertexBuffer::sUseStreamDraw = true;
+bool LLVertexBuffer::sUseVAO = false;
+bool LLVertexBuffer::sPreferStreamDraw = false;
 
 const U32 FENCE_WAIT_TIME_NANOSECONDS = 10000;  //1 ms
 
@@ -148,7 +148,7 @@ U32 wpo2(U32 i)
 	return r;
 }
 
-U8* LLVBOPool::allocate(U32& name, U32 size)
+volatile U8* LLVBOPool::allocate(U32& name, U32 size)
 {
 	llassert(nhpo2(size) == size);
 
@@ -159,20 +159,25 @@ U8* LLVBOPool::allocate(U32& name, U32 size)
 		mFreeList.resize(i+1);
 	}
 
-	U8* ret = NULL;
+	volatile U8* ret = NULL;
 
 	if (mFreeList[i].empty())
 	{
 		//make a new buffer
 		glGenBuffersARB(1, &name);
 		glBindBufferARB(mType, name);
-		glBufferDataARB(mType, size, 0, mUsage);
 		LLVertexBuffer::sAllocatedBytes += size;
 
-		if (LLVertexBuffer::sDisableVBOMapping)
+		if (LLVertexBuffer::sDisableVBOMapping || mUsage != GL_DYNAMIC_DRAW_ARB)
 		{
+			glBufferDataARB(mType, size, 0, mUsage);
 			ret = (U8*) ll_aligned_malloc_16(size);
 		}
+		else
+		{ //always use a true hint of static draw when allocating non-client-backed buffers
+			glBufferDataARB(mType, size, 0, GL_STATIC_DRAW_ARB);
+		}
+
 		glBindBufferARB(mType, 0);
 	}
 	else
@@ -188,7 +193,7 @@ U8* LLVBOPool::allocate(U32& name, U32 size)
 	return ret;
 }
 
-void LLVBOPool::release(U32 name, U8* buffer, U32 size)
+void LLVBOPool::release(U32 name, volatile U8* buffer, U32 size)
 {
 	llassert(nhpo2(size) == size);
 
@@ -199,10 +204,16 @@ void LLVBOPool::release(U32 name, U8* buffer, U32 size)
 	Record rec;
 	rec.mGLName = name;
 	rec.mClientData = buffer;
-
-	sBytesPooled += size;
-
-	mFreeList[i].push_back(rec);
+	
+	if (buffer == NULL)
+	{
+		glDeleteBuffersARB(1, &rec.mGLName);
+	}
+	else
+	{
+		sBytesPooled += size;
+		mFreeList[i].push_back(rec);
+	}
 }
 
 void LLVBOPool::cleanup()
@@ -221,7 +232,7 @@ void LLVBOPool::cleanup()
 
 			if (r.mClientData)
 			{
-				ll_aligned_free_16(r.mClientData);
+				ll_aligned_free_16((void*) r.mClientData);
 			}
 
 			l.pop_front();
@@ -271,7 +282,13 @@ void LLVertexBuffer::setupClientArrays(U32 data_mask)
 {
 	if (sLastMask != data_mask)
 	{
-		BOOL error = FALSE;
+		bool error = false;
+
+		if (gGLManager.mGLSLVersionMajor < 2 && gGLManager.mGLSLVersionMinor < 30)
+		{
+			//make sure texture index is disabled
+			data_mask = data_mask & ~MAP_TEXTURE_INDEX;
+		}
 
 		if (LLGLSLShader::sNoFixedFunction)
 		{
@@ -332,7 +349,7 @@ void LLVertexBuffer::setupClientArrays(U32 data_mask)
 						{
 							if (gDebugSession)
 							{
-								error = TRUE;
+								error = true;
 								gFailLog << "Bad client state! " << array[i] << " disabled." << std::endl;
 							}
 							else
@@ -352,7 +369,7 @@ void LLVertexBuffer::setupClientArrays(U32 data_mask)
 					{ //needs to be disabled, make sure it was (DEBUG TEMPORARY)
 						if (gDebugSession)
 						{
-							error = TRUE;
+							error = true;
 							gFailLog << "Bad client state! " << array[i] << " enabled." << std::endl;
 						}
 						else
@@ -418,7 +435,7 @@ void LLVertexBuffer::drawArrays(U32 mode, const std::vector<LLVector3>& pos, con
 
 	U32 count = pos.size();
 	llassert_always(norm.size() >= pos.size());
-	llassert_always(count > 0) ;
+	llassert_always(count > 0);
 
 	unbind();
 	
@@ -536,7 +553,7 @@ void LLVertexBuffer::validateRange(U32 start, U32 end, U32 count, U32 indices_of
 void LLVertexBuffer::drawRange(U32 mode, U32 start, U32 end, U32 count, U32 indices_offset) const
 {
 	validateRange(start, end, count, indices_offset);
-
+	mMappable = false;
 	gGL.syncMatrices();
 
 	llassert(mNumVerts >= 0);
@@ -591,7 +608,7 @@ void LLVertexBuffer::drawRange(U32 mode, U32 start, U32 end, U32 count, U32 indi
 void LLVertexBuffer::draw(U32 mode, U32 count, U32 indices_offset) const
 {
 	llassert(!LLGLSLShader::sNoFixedFunction || LLGLSLShader::sCurBoundShaderPtr != NULL);
-
+	mMappable = false;
 	gGL.syncMatrices();
 
 	llassert(mNumIndices >= 0);
@@ -637,7 +654,7 @@ void LLVertexBuffer::draw(U32 mode, U32 count, U32 indices_offset) const
 void LLVertexBuffer::drawArrays(U32 mode, U32 first, U32 count) const
 {
 	llassert(!LLGLSLShader::sNoFixedFunction || LLGLSLShader::sCurBoundShaderPtr != NULL);
-	
+	mMappable = false;
 	gGL.syncMatrices();
 	
 	llassert(mNumVerts >= 0);
@@ -677,23 +694,13 @@ void LLVertexBuffer::drawArrays(U32 mode, U32 first, U32 count) const
 //static
 void LLVertexBuffer::initClass(bool use_vbo, bool no_vbo_mapping)
 {
-	sEnableVBOs = use_vbo && gGLManager.mHasVertexBufferObject ;
-	sDisableVBOMapping = sEnableVBOs && no_vbo_mapping ;
+	sEnableVBOs = use_vbo && gGLManager.mHasVertexBufferObject;
+	sDisableVBOMapping = sEnableVBOs && no_vbo_mapping;
 
-	if(!sPrivatePoolp)
+	if (!sPrivatePoolp)
 	{ 
-		sPrivatePoolp = LLPrivateMemoryPoolManager::getInstance()->newPool(LLPrivateMemoryPool::STATIC) ;
+		sPrivatePoolp = LLPrivateMemoryPoolManager::getInstance()->newPool(LLPrivateMemoryPool::STATIC);
 	}
-
-	sStreamVBOPool.mType = GL_ARRAY_BUFFER_ARB;
-	sStreamVBOPool.mUsage= GL_STREAM_DRAW_ARB;
-	sStreamIBOPool.mType = GL_ELEMENT_ARRAY_BUFFER_ARB;
-	sStreamIBOPool.mUsage= GL_STREAM_DRAW_ARB;
-
-	sDynamicVBOPool.mType = GL_ARRAY_BUFFER_ARB;
-	sDynamicVBOPool.mUsage= GL_DYNAMIC_DRAW_ARB;
-	sDynamicIBOPool.mType = GL_ELEMENT_ARRAY_BUFFER_ARB;
-	sDynamicIBOPool.mUsage= GL_DYNAMIC_DRAW_ARB;
 }
 
 //static 
@@ -706,18 +713,18 @@ void LLVertexBuffer::unbind()
 #endif
 		sGLRenderArray = 0;
 		sGLRenderIndices = 0;
-		sIBOActive = FALSE;
+		sIBOActive = false;
 	}
 
 	if (sVBOActive)
 	{
 		glBindBufferARB(GL_ARRAY_BUFFER_ARB, 0);
-		sVBOActive = FALSE;
+		sVBOActive = false;
 	}
 	if (sIBOActive)
 	{
 		glBindBufferARB(GL_ELEMENT_ARRAY_BUFFER_ARB, 0);
-		sIBOActive = FALSE;
+		sIBOActive = false;
 	}
 
 	sGLRenderBuffer = 0;
@@ -739,69 +746,87 @@ void LLVertexBuffer::cleanupClass()
 
 	if(sPrivatePoolp)
 	{
-		LLPrivateMemoryPoolManager::getInstance()->deletePool(sPrivatePoolp) ;
-		sPrivatePoolp = NULL ;
+		LLPrivateMemoryPoolManager::getInstance()->deletePool(sPrivatePoolp);
+		sPrivatePoolp = NULL;
 	}
 }
 
 //----------------------------------------------------------------------------
 
-LLVertexBuffer::LLVertexBuffer(U32 typemask, S32 usage) :
-	LLRefCount(),
-
-	mNumVerts(0),
-	mNumIndices(0),
-	mUsage(usage),
-	mGLBuffer(0),
-	mGLArray(0),
-	mGLIndices(0), 
-	mMappedData(NULL),
-	mMappedIndexData(NULL), 
-	mVertexLocked(FALSE),
-	mIndexLocked(FALSE),
-	mFinal(FALSE),
-	mEmpty(TRUE),
-	mFence(NULL)
+S32 LLVertexBuffer::determineUsage(S32 usage)
 {
-	LLMemType mt2(LLMemType::MTYPE_VERTEX_CONSTRUCTOR);
-	mFence = NULL;
+	S32 ret_usage = usage;
+
 	if (!sEnableVBOs)
 	{
-		mUsage = 0 ; 
+		ret_usage = 0;
 	}
-
-	if (mUsage == GL_STREAM_DRAW_ARB && !sUseStreamDraw)
+	
+	if (ret_usage == GL_STREAM_DRAW_ARB && !sUseStreamDraw)
 	{
-		mUsage = 0;
+		ret_usage = 0;
 	}
 	
-	if (mUsage == GL_DYNAMIC_DRAW_ARB && sPreferStreamDraw)
+	if (ret_usage == GL_DYNAMIC_DRAW_ARB && sPreferStreamDraw)
 	{
-		mUsage = GL_STREAM_DRAW_ARB;
+		ret_usage = GL_STREAM_DRAW_ARB;
 	}
-
-	if (mUsage == 0 && LLRender::sGLCoreProfile)
+	
+	if (ret_usage == 0 && LLRender::sGLCoreProfile)
 	{ //MUST use VBOs for all rendering
-		mUsage = GL_STREAM_DRAW_ARB;
+		ret_usage = GL_STREAM_DRAW_ARB;
 	}
-
-	if (mUsage && mUsage != GL_STREAM_DRAW_ARB)
+	
+	if (ret_usage && ret_usage != GL_STREAM_DRAW_ARB)
 	{ //only stream_draw and dynamic_draw are supported when using VBOs, dynamic draw is the default
-		mUsage = GL_DYNAMIC_DRAW_ARB;
+		if (sDisableVBOMapping)
+		{ //always use stream draw if VBO mapping is disabled
+			ret_usage = GL_STREAM_DRAW_ARB;
+		}
+		else
+		{
+			ret_usage = GL_DYNAMIC_DRAW_ARB;
+		}
 	}
-		
+	
+	return ret_usage;
+}
+
+LLVertexBuffer::LLVertexBuffer(U32 typemask, S32 usage) :
+	LLRefCount(),
+
+	mNumVerts(0),
+	mNumIndices(0),
+	mAlignedOffset(0),
+	mAlignedIndexOffset(0),
+	mSize(0),
+	mIndicesSize(0),
+	mTypeMask(typemask),
+	mUsage(LLVertexBuffer::determineUsage(usage)),
+	mGLBuffer(0),
+	mGLIndices(0),
+	mGLArray(0),
+	mMappedData(NULL),
+	mMappedIndexData(NULL),
+	mMappedDataUsingVBOs(false),
+	mMappedIndexDataUsingVBOs(false),
+	mVertexLocked(false),
+	mIndexLocked(false),
+	mFinal(false),
+	mEmpty(true),
+	mMappable(false),
+	mFence(NULL)
+{
+	LLMemType mt2(LLMemType::MTYPE_VERTEX_CONSTRUCTOR);
+
+	mMappable = (mUsage == GL_DYNAMIC_DRAW_ARB && !sDisableVBOMapping);
+
 	//zero out offsets
 	for (U32 i = 0; i < TYPE_MAX; i++)
 	{
 		mOffsets[i] = 0;
 	}
 
-	mTypeMask = typemask;
-	mSize = 0;
-	mIndicesSize = 0;
-	mAlignedOffset = 0;
-	mAlignedIndexOffset = 0;
-
 	sCount++;
 }
 
@@ -873,7 +898,7 @@ LLVertexBuffer::~LLVertexBuffer()
 	
 	mFence = NULL;
 
-	llassert_always(!mMappedData && !mMappedIndexData) ;
+	llassert_always(!mMappedData && !mMappedIndexData);
 };
 
 void LLVertexBuffer::placeFence() const
@@ -982,9 +1007,11 @@ void LLVertexBuffer::createGLBuffer(U32 size)
 		return;
 	}
 
-	mEmpty = TRUE;
+	mEmpty = true;
 
-	if (useVBOs())
+	mMappedDataUsingVBOs = useVBOs();
+	
+	if (mMappedDataUsingVBOs)
 	{
 		genBuffer(size);
 	}
@@ -1011,12 +1038,14 @@ void LLVertexBuffer::createGLIndices(U32 size)
 		return;
 	}
 
-	mEmpty = TRUE;
+	mEmpty = true;
 
 	//pad by 16 bytes for aligned copies
 	size += 16;
 
-	if (useVBOs())
+	mMappedIndexDataUsingVBOs = useVBOs();
+
+	if (mMappedIndexDataUsingVBOs)
 	{
 		//pad by another 16 bytes for VBO pointer adjustment
 		size += 16;
@@ -1036,15 +1065,15 @@ void LLVertexBuffer::destroyGLBuffer()
 	LLMemType mt2(LLMemType::MTYPE_VERTEX_DESTROY_BUFFER);
 	if (mGLBuffer)
 	{
-		if (useVBOs())
+		if (mMappedDataUsingVBOs)
 		{
 			releaseBuffer();
 		}
 		else
 		{
-			FREE_MEM(sPrivatePoolp, mMappedData) ;
+			FREE_MEM(sPrivatePoolp, (void*) mMappedData);
 			mMappedData = NULL;
-			mEmpty = TRUE;
+			mEmpty = true;
 		}
 	}
 	
@@ -1057,15 +1086,15 @@ void LLVertexBuffer::destroyGLIndices()
 	LLMemType mt2(LLMemType::MTYPE_VERTEX_DESTROY_INDICES);
 	if (mGLIndices)
 	{
-		if (useVBOs())
+		if (mMappedIndexDataUsingVBOs)
 		{
 			releaseIndices();
 		}
 		else
 		{
-			FREE_MEM(sPrivatePoolp, mMappedIndexData) ;
+			FREE_MEM(sPrivatePoolp, (void*) mMappedIndexData);
 			mMappedIndexData = NULL;
-			mEmpty = TRUE;
+			mEmpty = true;
 		}
 	}
 
@@ -1170,7 +1199,7 @@ void LLVertexBuffer::setupVertexArray()
 		1, //TYPE_WEIGHT,
 		4, //TYPE_WEIGHT4,
 		4, //TYPE_CLOTHWEIGHT,
-		1, //TYPE_TEXTURE_INDEX
+		4, //TYPE_TEXTURE_INDEX
 	};
 
 	U32 attrib_type[] =
@@ -1187,7 +1216,24 @@ void LLVertexBuffer::setupVertexArray()
 		GL_FLOAT, //TYPE_WEIGHT,
 		GL_FLOAT, //TYPE_WEIGHT4,
 		GL_FLOAT, //TYPE_CLOTHWEIGHT,
-		GL_FLOAT, //TYPE_TEXTURE_INDEX
+		GL_UNSIGNED_BYTE, //TYPE_TEXTURE_INDEX
+	};
+
+	bool attrib_integer[] = 
+	{
+		false, //TYPE_VERTEX,
+		false, //TYPE_NORMAL,
+		false, //TYPE_TEXCOORD0,
+		false, //TYPE_TEXCOORD1,
+		false, //TYPE_TEXCOORD2,
+		false, //TYPE_TEXCOORD3,
+		false, //TYPE_COLOR,
+		false, //TYPE_EMISSIVE,
+		false, //TYPE_BINORMAL,
+		false, //TYPE_WEIGHT,
+		false, //TYPE_WEIGHT4,
+		false, //TYPE_CLOTHWEIGHT,
+		true, //TYPE_TEXTURE_INDEX
 	};
 
 	U32 attrib_normalized[] =
@@ -1215,7 +1261,21 @@ void LLVertexBuffer::setupVertexArray()
 		if (mTypeMask & (1 << i))
 		{
 			glEnableVertexAttribArrayARB(i);
-			glVertexAttribPointerARB(i, attrib_size[i], attrib_type[i], attrib_normalized[i], sTypeSize[i], (void*) mOffsets[i]); 
+
+			if (attrib_integer[i])
+			{
+#if !LL_DARWIN
+				//glVertexattribIPointer requires GLSL 1.30 or later
+				if (gGLManager.mGLSLVersionMajor > 1 || gGLManager.mGLSLVersionMinor >= 30)
+				{
+					glVertexAttribIPointer(i, attrib_size[i], attrib_type[i], sTypeSize[i], (void*) mOffsets[i]); 
+				}
+#endif
+			}
+			else
+			{
+				glVertexAttribPointerARB(i, attrib_size[i], attrib_type[i], attrib_normalized[i], sTypeSize[i], (void*) mOffsets[i]); 
+			}
 		}
 		else
 		{
@@ -1250,16 +1310,10 @@ void LLVertexBuffer::resizeBuffer(S32 newnverts, S32 newnindices)
 	}
 }
 
-BOOL LLVertexBuffer::useVBOs() const
+bool LLVertexBuffer::useVBOs() const
 {
 	//it's generally ineffective to use VBO for things that are streaming on apple
-		
-	if (!mUsage)
-	{
-		return FALSE;
-	}
-
-	return TRUE;
+	return (mUsage != 0);
 }
 
 //----------------------------------------------------------------------------
@@ -1282,8 +1336,11 @@ bool expand_region(LLVertexBuffer::MappedRegion& region, S32 index, S32 count)
 	return true;
 }
 
+static LLFastTimer::DeclareTimer FTM_VBO_MAP_BUFFER_RANGE("VBO Map Range");
+static LLFastTimer::DeclareTimer FTM_VBO_MAP_BUFFER("VBO Map");
+
 // Map for data access
-U8* LLVertexBuffer::mapVertexBuffer(S32 type, S32 index, S32 count, bool map_range)
+volatile U8* LLVertexBuffer::mapVertexBuffer(S32 type, S32 index, S32 count, bool map_range)
 {
 	bindGLBuffer(true);
 	LLMemType mt2(LLMemType::MTYPE_VERTEX_MAP_BUFFER);
@@ -1298,7 +1355,7 @@ U8* LLVertexBuffer::mapVertexBuffer(S32 type, S32 index, S32 count, bool map_ran
 		
 	if (useVBOs())
 	{
-		if (sDisableVBOMapping || gGLManager.mHasMapBufferRange || gGLManager.mHasFlushBufferRange)
+		if (!mMappable || gGLManager.mHasMapBufferRange || gGLManager.mHasFlushBufferRange)
 		{
 			if (count == -1)
 			{
@@ -1323,7 +1380,7 @@ U8* LLVertexBuffer::mapVertexBuffer(S32 type, S32 index, S32 count, bool map_ran
 			if (!mapped)
 			{
 				//not already mapped, map new region
-				MappedRegion region(type, !sDisableVBOMapping && map_range ? -1 : index, count);
+				MappedRegion region(type, mMappable && map_range ? -1 : index, count);
 				mMappedVertexRegions.push_back(region);
 			}
 		}
@@ -1336,23 +1393,24 @@ U8* LLVertexBuffer::mapVertexBuffer(S32 type, S32 index, S32 count, bool map_ran
 		if (!mVertexLocked)
 		{
 			LLMemType mt_v(LLMemType::MTYPE_VERTEX_MAP_BUFFER_VERTICES);
-			mVertexLocked = TRUE;
+			mVertexLocked = true;
 			sMappedCount++;
 			stop_glerror();	
 
-			if(sDisableVBOMapping)
+			if(!mMappable)
 			{
 				map_range = false;
 			}
 			else
 			{
-				U8* src = NULL;
+				volatile U8* src = NULL;
 				waitFence();
 				if (gGLManager.mHasMapBufferRange)
 				{
 					if (map_range)
 					{
 #ifdef GL_ARB_map_buffer_range
+						LLFastTimer t(FTM_VBO_MAP_BUFFER_RANGE);
 						S32 offset = mOffsets[type] + sTypeSize[type]*index;
 						S32 length = (sTypeSize[type]*count+0xF) & ~0xF;
 						src = (U8*) glMapBufferRange(GL_ARRAY_BUFFER_ARB, offset, length, 
@@ -1376,6 +1434,7 @@ U8* LLVertexBuffer::mapVertexBuffer(S32 type, S32 index, S32 count, bool map_ran
 							}
 						}
 
+						LLFastTimer t(FTM_VBO_MAP_BUFFER);
 						src = (U8*) glMapBufferRange(GL_ARRAY_BUFFER_ARB, 0, mSize, 
 							GL_MAP_WRITE_BIT | 
 							GL_MAP_FLUSH_EXPLICIT_BIT);
@@ -1403,7 +1462,7 @@ U8* LLVertexBuffer::mapVertexBuffer(S32 type, S32 index, S32 count, bool map_ran
 
 				llassert(src != NULL);
 
-				mMappedData = LL_NEXT_ALIGNED_ADDRESS<U8>(src);
+				mMappedData = LL_NEXT_ALIGNED_ADDRESS<volatile U8>(src);
 				mAlignedOffset = mMappedData - src;
 			
 				stop_glerror();
@@ -1413,17 +1472,17 @@ U8* LLVertexBuffer::mapVertexBuffer(S32 type, S32 index, S32 count, bool map_ran
 			{
 				log_glerror();
 
-			//check the availability of memory
-			LLMemory::logMemoryInfo(TRUE) ; 
+				//check the availability of memory
+				LLMemory::logMemoryInfo(true);
 			
-				if(!sDisableVBOMapping)
+				if(mMappable)
 				{			
 					//--------------------
 					//print out more debug info before crash
-					llinfos << "vertex buffer size: (num verts : num indices) = " << getNumVerts() << " : " << getNumIndices() << llendl ;
-					GLint size ;
-					glGetBufferParameterivARB(GL_ARRAY_BUFFER_ARB, GL_BUFFER_SIZE_ARB, &size) ;
-					llinfos << "GL_ARRAY_BUFFER_ARB size is " << size << llendl ;
+					llinfos << "vertex buffer size: (num verts : num indices) = " << getNumVerts() << " : " << getNumIndices() << llendl;
+					GLint size;
+					glGetBufferParameterivARB(GL_ARRAY_BUFFER_ARB, GL_BUFFER_SIZE_ARB, &size);
+					llinfos << "GL_ARRAY_BUFFER_ARB size is " << size << llendl;
 					//--------------------
 
 					GLint buff;
@@ -1438,7 +1497,7 @@ U8* LLVertexBuffer::mapVertexBuffer(S32 type, S32 index, S32 count, bool map_ran
 				}
 				else
 				{
-					llerrs << "memory allocation for vertex data failed." << llendl ;
+					llerrs << "memory allocation for vertex data failed." << llendl;
 				}
 			}
 		}
@@ -1448,7 +1507,7 @@ U8* LLVertexBuffer::mapVertexBuffer(S32 type, S32 index, S32 count, bool map_ran
 		map_range = false;
 	}
 	
-	if (map_range && gGLManager.mHasMapBufferRange && !sDisableVBOMapping)
+	if (map_range && gGLManager.mHasMapBufferRange && mMappable)
 	{
 		return mMappedData;
 	}
@@ -1458,7 +1517,11 @@ U8* LLVertexBuffer::mapVertexBuffer(S32 type, S32 index, S32 count, bool map_ran
 	}
 }
 
-U8* LLVertexBuffer::mapIndexBuffer(S32 index, S32 count, bool map_range)
+
+static LLFastTimer::DeclareTimer FTM_VBO_MAP_INDEX_RANGE("IBO Map Range");
+static LLFastTimer::DeclareTimer FTM_VBO_MAP_INDEX("IBO Map");
+
+volatile U8* LLVertexBuffer::mapIndexBuffer(S32 index, S32 count, bool map_range)
 {
 	LLMemType mt2(LLMemType::MTYPE_VERTEX_MAP_BUFFER);
 	bindGLIndices(true);
@@ -1473,7 +1536,7 @@ U8* LLVertexBuffer::mapIndexBuffer(S32 index, S32 count, bool map_range)
 
 	if (useVBOs())
 	{
-		if (sDisableVBOMapping || gGLManager.mHasMapBufferRange || gGLManager.mHasFlushBufferRange)
+		if (!mMappable || gGLManager.mHasMapBufferRange || gGLManager.mHasFlushBufferRange)
 		{
 			if (count == -1)
 			{
@@ -1495,7 +1558,7 @@ U8* LLVertexBuffer::mapIndexBuffer(S32 index, S32 count, bool map_range)
 			if (!mapped)
 			{
 				//not already mapped, map new region
-				MappedRegion region(TYPE_INDEX, !sDisableVBOMapping && map_range ? -1 : index, count);
+				MappedRegion region(TYPE_INDEX, mMappable && map_range ? -1 : index, count);
 				mMappedIndexRegions.push_back(region);
 			}
 		}
@@ -1509,7 +1572,7 @@ U8* LLVertexBuffer::mapIndexBuffer(S32 index, S32 count, bool map_range)
 		{
 			LLMemType mt_v(LLMemType::MTYPE_VERTEX_MAP_BUFFER_INDICES);
 
-			mIndexLocked = TRUE;
+			mIndexLocked = true;
 			sMappedCount++;
 			stop_glerror();	
 
@@ -1524,19 +1587,20 @@ U8* LLVertexBuffer::mapIndexBuffer(S32 index, S32 count, bool map_range)
 				}
 			}
 
-			if(sDisableVBOMapping)
+			if(!mMappable)
 			{
 				map_range = false;
 			}
 			else
 			{
-				U8* src = NULL;
+				volatile U8* src = NULL;
 				waitFence();
 				if (gGLManager.mHasMapBufferRange)
 				{
 					if (map_range)
 					{
 #ifdef GL_ARB_map_buffer_range
+						LLFastTimer t(FTM_VBO_MAP_INDEX_RANGE);
 						S32 offset = sizeof(U16)*index;
 						S32 length = sizeof(U16)*count;
 						src = (U8*) glMapBufferRange(GL_ELEMENT_ARRAY_BUFFER_ARB, offset, length, 
@@ -1548,6 +1612,7 @@ U8* LLVertexBuffer::mapIndexBuffer(S32 index, S32 count, bool map_range)
 					else
 					{
 #ifdef GL_ARB_map_buffer_range
+						LLFastTimer t(FTM_VBO_MAP_INDEX);
 						src = (U8*) glMapBufferRange(GL_ELEMENT_ARRAY_BUFFER_ARB, 0, sizeof(U16)*mNumIndices, 
 							GL_MAP_WRITE_BIT | 
 							GL_MAP_FLUSH_EXPLICIT_BIT);
@@ -1569,6 +1634,7 @@ U8* LLVertexBuffer::mapIndexBuffer(S32 index, S32 count, bool map_range)
 				}
 				else
 				{
+					LLFastTimer t(FTM_VBO_MAP_INDEX);
 					map_range = false;
 					src = (U8*) glMapBufferARB(GL_ELEMENT_ARRAY_BUFFER_ARB, GL_WRITE_ONLY_ARB);
 				}
@@ -1585,9 +1651,9 @@ U8* LLVertexBuffer::mapIndexBuffer(S32 index, S32 count, bool map_range)
 		if (!mMappedIndexData)
 		{
 			log_glerror();
-			LLMemory::logMemoryInfo(TRUE) ;
+			LLMemory::logMemoryInfo(true);
 
-			if(!sDisableVBOMapping)
+			if(mMappable)
 			{
 				GLint buff;
 				glGetIntegerv(GL_ELEMENT_ARRAY_BUFFER_BINDING_ARB, &buff);
@@ -1600,7 +1666,7 @@ U8* LLVertexBuffer::mapIndexBuffer(S32 index, S32 count, bool map_range)
 			}
 			else
 			{
-				llerrs << "memory allocation for Index data failed. " << llendl ;
+				llerrs << "memory allocation for Index data failed. " << llendl;
 			}
 		}
 	}
@@ -1609,7 +1675,7 @@ U8* LLVertexBuffer::mapIndexBuffer(S32 index, S32 count, bool map_range)
 		map_range = false;
 	}
 
-	if (map_range && gGLManager.mHasMapBufferRange && !sDisableVBOMapping)
+	if (map_range && gGLManager.mHasMapBufferRange && mMappable)
 	{
 		return mMappedIndexData;
 	}
@@ -1619,22 +1685,30 @@ U8* LLVertexBuffer::mapIndexBuffer(S32 index, S32 count, bool map_range)
 	}
 }
 
+static LLFastTimer::DeclareTimer FTM_VBO_UNMAP("VBO Unmap");
+static LLFastTimer::DeclareTimer FTM_VBO_FLUSH_RANGE("Flush VBO Range");
+
+
+static LLFastTimer::DeclareTimer FTM_IBO_UNMAP("IBO Unmap");
+static LLFastTimer::DeclareTimer FTM_IBO_FLUSH_RANGE("Flush IBO Range");
+
 void LLVertexBuffer::unmapBuffer()
 {
 	LLMemType mt2(LLMemType::MTYPE_VERTEX_UNMAP_BUFFER);
 	if (!useVBOs())
 	{
-		return ; //nothing to unmap
+		return; //nothing to unmap
 	}
 
-	bool updated_all = false ;
+	bool updated_all = false;
 
 	if (mMappedData && mVertexLocked)
 	{
+		LLFastTimer t(FTM_VBO_UNMAP);
 		bindGLBuffer(true);
 		updated_all = mIndexLocked; //both vertex and index buffers done updating
 
-		if(sDisableVBOMapping)
+		if(!mMappable)
 		{
 			if (!mMappedVertexRegions.empty())
 			{
@@ -1644,7 +1718,7 @@ void LLVertexBuffer::unmapBuffer()
 					const MappedRegion& region = mMappedVertexRegions[i];
 					S32 offset = region.mIndex >= 0 ? mOffsets[region.mType]+sTypeSize[region.mType]*region.mIndex : 0;
 					S32 length = sTypeSize[region.mType]*region.mCount;
-					glBufferSubDataARB(GL_ARRAY_BUFFER_ARB, offset, length, mMappedData+offset);
+					glBufferSubDataARB(GL_ARRAY_BUFFER_ARB, offset, length, (U8*) mMappedData+offset);
 					stop_glerror();
 				}
 
@@ -1653,7 +1727,7 @@ void LLVertexBuffer::unmapBuffer()
 			else
 			{
 				stop_glerror();
-				glBufferSubDataARB(GL_ARRAY_BUFFER_ARB, 0, getSize(), mMappedData);
+				glBufferSubDataARB(GL_ARRAY_BUFFER_ARB, 0, getSize(), (U8*) mMappedData);
 				stop_glerror();
 			}
 		}
@@ -1671,6 +1745,7 @@ void LLVertexBuffer::unmapBuffer()
 						S32 length = sTypeSize[region.mType]*region.mCount;
 						if (gGLManager.mHasMapBufferRange)
 						{
+							LLFastTimer t(FTM_VBO_FLUSH_RANGE);
 #ifdef GL_ARB_map_buffer_range
 							glFlushMappedBufferRange(GL_ARRAY_BUFFER_ARB, offset, length);
 #endif
@@ -1692,14 +1767,15 @@ void LLVertexBuffer::unmapBuffer()
 			mMappedData = NULL;
 		}
 
-		mVertexLocked = FALSE ;
+		mVertexLocked = false;
 		sMappedCount--;
 	}
 	
 	if (mMappedIndexData && mIndexLocked)
 	{
+		LLFastTimer t(FTM_IBO_UNMAP);
 		bindGLIndices();
-		if(sDisableVBOMapping)
+		if(!mMappable)
 		{
 			if (!mMappedIndexRegions.empty())
 			{
@@ -1708,7 +1784,7 @@ void LLVertexBuffer::unmapBuffer()
 					const MappedRegion& region = mMappedIndexRegions[i];
 					S32 offset = region.mIndex >= 0 ? sizeof(U16)*region.mIndex : 0;
 					S32 length = sizeof(U16)*region.mCount;
-					glBufferSubDataARB(GL_ELEMENT_ARRAY_BUFFER_ARB, offset, length, mMappedIndexData+offset);
+					glBufferSubDataARB(GL_ELEMENT_ARRAY_BUFFER_ARB, offset, length, (U8*) mMappedIndexData+offset);
 					stop_glerror();
 				}
 
@@ -1717,7 +1793,7 @@ void LLVertexBuffer::unmapBuffer()
 			else
 			{
 				stop_glerror();
-				glBufferSubDataARB(GL_ELEMENT_ARRAY_BUFFER_ARB, 0, getIndicesSize(), mMappedIndexData);
+				glBufferSubDataARB(GL_ELEMENT_ARRAY_BUFFER_ARB, 0, getIndicesSize(), (U8*) mMappedIndexData);
 				stop_glerror();
 			}
 		}
@@ -1734,6 +1810,7 @@ void LLVertexBuffer::unmapBuffer()
 						S32 length = sizeof(U16)*region.mCount;
 						if (gGLManager.mHasMapBufferRange)
 						{
+							LLFastTimer t(FTM_IBO_FLUSH_RANGE);
 #ifdef GL_ARB_map_buffer_range
 							glFlushMappedBufferRange(GL_ELEMENT_ARRAY_BUFFER_ARB, offset, length);
 #endif
@@ -1754,16 +1831,16 @@ void LLVertexBuffer::unmapBuffer()
 			glUnmapBufferARB(GL_ELEMENT_ARRAY_BUFFER_ARB);
 			stop_glerror();
 
-			mMappedIndexData = NULL ;
+			mMappedIndexData = NULL;
 		}
 
-		mIndexLocked = FALSE ;
+		mIndexLocked = false;
 		sMappedCount--;
 	}
 
 	if(updated_all)
 	{
-		mEmpty = FALSE;
+		mEmpty = false;
 	}
 }
 
@@ -1778,39 +1855,39 @@ template <class T,S32 type> struct VertexBufferStrider
 	{
 		if (type == LLVertexBuffer::TYPE_INDEX)
 		{
-			U8* ptr = vbo.mapIndexBuffer(index, count, map_range);
+			volatile U8* ptr = vbo.mapIndexBuffer(index, count, map_range);
 
 			if (ptr == NULL)
 			{
 				llwarns << "mapIndexBuffer failed!" << llendl;
-				return FALSE;
+				return false;
 			}
 
 			strider = (T*)ptr;
 			strider.setStride(0);
-			return TRUE;
+			return true;
 		}
 		else if (vbo.hasDataType(type))
 		{
 			S32 stride = LLVertexBuffer::sTypeSize[type];
 
-			U8* ptr = vbo.mapVertexBuffer(type, index, count, map_range);
+			volatile U8* ptr = vbo.mapVertexBuffer(type, index, count, map_range);
 
 			if (ptr == NULL)
 			{
 				llwarns << "mapVertexBuffer failed!" << llendl;
-				return FALSE;
+				return false;
 			}
 
 			strider = (T*)ptr;
 			strider.setStride(stride);
-			return TRUE;
+			return true;
 		}
 		else
 		{
 			llerrs << "VertexBufferStrider could not find valid vertex data." << llendl;
 		}
-		return FALSE;
+		return false;
 	}
 };
 
@@ -1909,7 +1986,7 @@ bool LLVertexBuffer::bindGLBuffer(bool force_bind)
 		glBindBufferARB(GL_ARRAY_BUFFER_ARB, mGLBuffer);
 		sGLRenderBuffer = mGLBuffer;
 		sBindCount++;
-		sVBOActive = TRUE;
+		sVBOActive = true;
 
 		if (mGLArray)
 		{
@@ -1941,7 +2018,7 @@ bool LLVertexBuffer::bindGLIndices(bool force_bind)
 		sGLRenderIndices = mGLIndices;
 		stop_glerror();
 		sBindCount++;
-		sIBOActive = TRUE;
+		sIBOActive = true;
 		ret = true;
 	}
 
@@ -1963,7 +2040,7 @@ void LLVertexBuffer::setBuffer(U32 data_mask)
 
 	LLMemType mt2(LLMemType::MTYPE_VERTEX_SET_BUFFER);
 	//set up pointers if the data mask is different ...
-	BOOL setup = (sLastMask != data_mask);
+	bool setup = (sLastMask != data_mask);
 
 	if (gDebugGL && data_mask != 0)
 	{ //make sure data requirements are fulfilled
@@ -1997,21 +2074,17 @@ void LLVertexBuffer::setBuffer(U32 data_mask)
 		if (mGLArray)
 		{
 			bindGLArray();
-			setup = FALSE; //do NOT perform pointer setup if using VAO
+			setup = false; //do NOT perform pointer setup if using VAO
 		}
 		else
 		{
-			if (bindGLBuffer())
-			{
-				setup = TRUE;
-			}
-			if (bindGLIndices())
-			{
-				setup = TRUE;
-			}
+			const bool bindBuffer = bindGLBuffer();
+			const bool bindIndices = bindGLIndices();
+			
+			setup = setup || bindBuffer || bindIndices;
 		}
 
-		BOOL error = FALSE;
+		bool error = false;
 		if (gDebugGL && !mGLArray)
 		{
 			GLint buff;
@@ -2020,7 +2093,7 @@ void LLVertexBuffer::setBuffer(U32 data_mask)
 			{
 				if (gDebugSession)
 				{
-					error = TRUE;
+					error = true;
 					gFailLog << "Invalid GL vertex buffer bound: " << buff << std::endl;
 				}
 				else
@@ -2036,7 +2109,7 @@ void LLVertexBuffer::setBuffer(U32 data_mask)
 				{
 					if (gDebugSession)
 					{
-						error = TRUE;
+						error = true;
 						gFailLog << "Invalid GL index buffer bound: " << buff <<  std::endl;
 					}
 					else
@@ -2058,7 +2131,7 @@ void LLVertexBuffer::setBuffer(U32 data_mask)
 #endif
 			sGLRenderArray = 0;
 			sGLRenderIndices = 0;
-			sIBOActive = FALSE;
+			sIBOActive = false;
 		}
 
 		if (mGLBuffer)
@@ -2067,13 +2140,13 @@ void LLVertexBuffer::setBuffer(U32 data_mask)
 			{
 				glBindBufferARB(GL_ARRAY_BUFFER_ARB, 0);
 				sBindCount++;
-				sVBOActive = FALSE;
-				setup = TRUE; // ... or a VBO is deactivated
+				sVBOActive = false;
+				setup = true; // ... or a VBO is deactivated
 			}
 			if (sGLRenderBuffer != mGLBuffer)
 			{
 				sGLRenderBuffer = mGLBuffer;
-				setup = TRUE; // ... or a client memory pointer changed
+				setup = true; // ... or a client memory pointer changed
 			}
 		}
 		if (mGLIndices)
@@ -2082,7 +2155,7 @@ void LLVertexBuffer::setBuffer(U32 data_mask)
 			{
 				glBindBufferARB(GL_ELEMENT_ARRAY_BUFFER_ARB, 0);
 				sBindCount++;
-				sIBOActive = FALSE;
+				sIBOActive = false;
 			}
 			
 			sGLRenderIndices = mGLIndices;
@@ -2109,7 +2182,7 @@ void LLVertexBuffer::setupVertexBuffer(U32 data_mask)
 {
 	LLMemType mt2(LLMemType::MTYPE_VERTEX_SETUP_VERTEX_BUFFER);
 	stop_glerror();
-	U8* base = useVBOs() ? (U8*) mAlignedOffset : mMappedData;
+	volatile U8* base = useVBOs() ? (U8*) mAlignedOffset : mMappedData;
 
 	/*if ((data_mask & mTypeMask) != data_mask)
 	{
@@ -2170,25 +2243,28 @@ void LLVertexBuffer::setupVertexBuffer(U32 data_mask)
 		{
 			S32 loc = TYPE_WEIGHT;
 			void* ptr = (void*)(base + mOffsets[TYPE_WEIGHT]);
-			glVertexAttribPointerARB(loc, 1, GL_FLOAT, FALSE, LLVertexBuffer::sTypeSize[TYPE_WEIGHT], ptr);
+			glVertexAttribPointerARB(loc, 1, GL_FLOAT, GL_FALSE, LLVertexBuffer::sTypeSize[TYPE_WEIGHT], ptr);
 		}
 		if (data_mask & MAP_WEIGHT4)
 		{
 			S32 loc = TYPE_WEIGHT4;
 			void* ptr = (void*)(base+mOffsets[TYPE_WEIGHT4]);
-			glVertexAttribPointerARB(loc, 4, GL_FLOAT, FALSE, LLVertexBuffer::sTypeSize[TYPE_WEIGHT4], ptr);
+			glVertexAttribPointerARB(loc, 4, GL_FLOAT, GL_FALSE, LLVertexBuffer::sTypeSize[TYPE_WEIGHT4], ptr);
 		}
 		if (data_mask & MAP_CLOTHWEIGHT)
 		{
 			S32 loc = TYPE_CLOTHWEIGHT;
 			void* ptr = (void*)(base + mOffsets[TYPE_CLOTHWEIGHT]);
-			glVertexAttribPointerARB(loc, 4, GL_FLOAT, TRUE,  LLVertexBuffer::sTypeSize[TYPE_CLOTHWEIGHT], ptr);
+			glVertexAttribPointerARB(loc, 4, GL_FLOAT, GL_TRUE,  LLVertexBuffer::sTypeSize[TYPE_CLOTHWEIGHT], ptr);
 		}
-		if (data_mask & MAP_TEXTURE_INDEX)
+		if (data_mask & MAP_TEXTURE_INDEX && 
+				(gGLManager.mGLSLVersionMajor >= 2 || gGLManager.mGLSLVersionMinor >= 30)) //indexed texture rendering requires GLSL 1.30 or later
 		{
+#if !LL_DARWIN
 			S32 loc = TYPE_TEXTURE_INDEX;
 			void *ptr = (void*) (base + mOffsets[TYPE_VERTEX] + 12);
-			glVertexAttribPointerARB(loc, 1, GL_FLOAT, GL_FALSE, LLVertexBuffer::sTypeSize[TYPE_VERTEX], ptr);
+			glVertexAttribIPointer(loc, 4, GL_UNSIGNED_BYTE, LLVertexBuffer::sTypeSize[TYPE_VERTEX], ptr);
+#endif
 		}
 		if (data_mask & MAP_VERTEX)
 		{
diff --git a/indra/llrender/llvertexbuffer.h b/indra/llrender/llvertexbuffer.h
index 3e6f6a959a..d859199663 100644
--- a/indra/llrender/llvertexbuffer.h
+++ b/indra/llrender/llvertexbuffer.h
@@ -55,15 +55,20 @@ class LLVBOPool
 {
 public:
 	static U32 sBytesPooled;
+	
+	LLVBOPool(U32 vboUsage, U32 vboType)
+		: mUsage(vboUsage)
+		, mType(vboType)
+	{}
 
-	U32 mUsage;
-	U32 mType;
+	const U32 mUsage;
+	const U32 mType;
 
 	//size MUST be a power of 2
-	U8* allocate(U32& name, U32 size);
+	volatile U8* allocate(U32& name, U32 size);
 	
 	//size MUST be the size provided to allocate that returned the given name
-	void release(U32 name, U8* buffer, U32 size);
+	void release(U32 name, volatile U8* buffer, U32 size);
 	
 	//destroy all records in mFreeList
 	void cleanup();
@@ -72,7 +77,7 @@ public:
 	{
 	public:
 		U32 mGLName;
-		U8* mClientData;
+		volatile U8* mClientData;
 	};
 
 	typedef std::list<Record> record_list_t;
@@ -88,7 +93,7 @@ public:
 
 //============================================================================
 // base class 
-class LLPrivateMemoryPool ;
+class LLPrivateMemoryPool;
 class LLVertexBuffer : public LLRefCount
 {
 public:
@@ -103,6 +108,7 @@ public:
 	};
 
 	LLVertexBuffer(const LLVertexBuffer& rhs)
+		: mUsage(rhs.mUsage)
 	{
 		*this = rhs;
 	}
@@ -118,9 +124,9 @@ public:
 	static LLVBOPool sStreamIBOPool;
 	static LLVBOPool sDynamicIBOPool;
 
-	static BOOL	sUseStreamDraw;
-	static BOOL sUseVAO;
-	static BOOL	sPreferStreamDraw;
+	static bool	sUseStreamDraw;
+	static bool sUseVAO;
+	static bool	sPreferStreamDraw;
 
 	static void initClass(bool use_vbo, bool no_vbo_mapping);
 	static void cleanupClass();
@@ -201,15 +207,15 @@ protected:
 	void 	destroyGLIndices();
 	void	updateNumVerts(S32 nverts);
 	void	updateNumIndices(S32 nindices); 
-	virtual BOOL	useVBOs() const;
+	bool	useVBOs() const;
 	void	unmapBuffer();
 		
 public:
 	LLVertexBuffer(U32 typemask, S32 usage);
 	
 	// map for data access
-	U8*		mapVertexBuffer(S32 type, S32 index, S32 count, bool map_range);
-	U8*		mapIndexBuffer(S32 index, S32 count, bool map_range);
+	volatile U8*		mapVertexBuffer(S32 type, S32 index, S32 count, bool map_range);
+	volatile U8*		mapIndexBuffer(S32 index, S32 count, bool map_range);
 
 	// set for rendering
 	virtual void	setBuffer(U32 data_mask); 	// calls  setupVertexBuffer() if data_mask is not 0
@@ -239,21 +245,22 @@ public:
 	bool getClothWeightStrider(LLStrider<LLVector4>& strider, S32 index=0, S32 count = -1, bool map_range = false);
 	
 
-	BOOL isEmpty() const					{ return mEmpty; }
-	BOOL isLocked() const					{ return mVertexLocked || mIndexLocked; }
+	bool isEmpty() const					{ return mEmpty; }
+	bool isLocked() const					{ return mVertexLocked || mIndexLocked; }
 	S32 getNumVerts() const					{ return mNumVerts; }
 	S32 getNumIndices() const				{ return mNumIndices; }
 	
-	U8* getIndicesPointer() const			{ return useVBOs() ? (U8*) mAlignedIndexOffset : mMappedIndexData; }
-	U8* getVerticesPointer() const			{ return useVBOs() ? (U8*) mAlignedOffset : mMappedData; }
+	volatile U8* getIndicesPointer() const			{ return useVBOs() ? (U8*) mAlignedIndexOffset : mMappedIndexData; }
+	volatile U8* getVerticesPointer() const			{ return useVBOs() ? (U8*) mAlignedOffset : mMappedData; }
 	U32 getTypeMask() const					{ return mTypeMask; }
 	bool hasDataType(S32 type) const		{ return ((1 << type) & getTypeMask()); }
 	S32 getSize() const;
 	S32 getIndicesSize() const				{ return mIndicesSize; }
-	U8* getMappedData() const				{ return mMappedData; }
-	U8* getMappedIndices() const			{ return mMappedIndexData; }
+	volatile U8* getMappedData() const				{ return mMappedData; }
+	volatile U8* getMappedIndices() const			{ return mMappedIndexData; }
 	S32 getOffset(S32 type) const			{ return mOffsets[type]; }
 	S32 getUsage() const					{ return mUsage; }
+	bool isWriteable() const				{ return (mMappable || mUsage == GL_STREAM_DRAW_ARB) ? true : false; }
 
 	void draw(U32 mode, U32 count, U32 indices_offset) const;
 	void drawArrays(U32 mode, U32 offset, U32 count) const;
@@ -273,17 +280,25 @@ protected:
 	S32		mSize;
 	S32		mIndicesSize;
 	U32		mTypeMask;
-	S32		mUsage;			// GL usage
+
+	const S32		mUsage;			// GL usage
+	
 	U32		mGLBuffer;		// GL VBO handle
 	U32		mGLIndices;		// GL IBO handle
 	U32		mGLArray;		// GL VAO handle
 	
-	U8*		mMappedData;	// pointer to currently mapped data (NULL if unmapped)
-	U8*		mMappedIndexData;	// pointer to currently mapped indices (NULL if unmapped)
-	BOOL	mVertexLocked;			// if TRUE, vertex buffer is being or has been written to in client memory
-	BOOL	mIndexLocked;			// if TRUE, index buffer is being or has been written to in client memory
-	BOOL	mFinal;			// if TRUE, buffer can not be mapped again
-	BOOL	mEmpty;			// if TRUE, client buffer is empty (or NULL). Old values have been discarded.	
+	volatile U8* mMappedData;	// pointer to currently mapped data (NULL if unmapped)
+	volatile U8* mMappedIndexData;	// pointer to currently mapped indices (NULL if unmapped)
+
+	U32		mMappedDataUsingVBOs : 1;
+	U32		mMappedIndexDataUsingVBOs : 1;
+	U32		mVertexLocked : 1;			// if true, vertex buffer is being or has been written to in client memory
+	U32		mIndexLocked : 1;			// if true, index buffer is being or has been written to in client memory
+	U32		mFinal : 1;			// if true, buffer can not be mapped again
+	U32		mEmpty : 1;			// if true, client buffer is empty (or NULL). Old values have been discarded.	
+	
+	mutable bool	mMappable;     // if true, use memory mapping to upload data (otherwise doublebuffer and use glBufferSubData)
+
 	S32		mOffsets[TYPE_MAX];
 
 	std::vector<MappedRegion> mMappedVertexRegions;
@@ -294,26 +309,27 @@ protected:
 	void placeFence() const;
 	void waitFence() const;
 
+	static S32 determineUsage(S32 usage);
 
 private:
-	static LLPrivateMemoryPool* sPrivatePoolp ;
+	static LLPrivateMemoryPool* sPrivatePoolp;
 
 public:
 	static S32 sCount;
 	static S32 sGLCount;
 	static S32 sMappedCount;
-	static BOOL sMapped;
+	static bool sMapped;
 	typedef std::list<LLVertexBuffer*> buffer_list_t;
 		
-	static BOOL sDisableVBOMapping; //disable glMapBufferARB
-	static BOOL sEnableVBOs;
+	static bool sDisableVBOMapping; //disable glMapBufferARB
+	static bool sEnableVBOs;
 	static S32 sTypeSize[TYPE_MAX];
 	static U32 sGLMode[LLRender::NUM_MODES];
 	static U32 sGLRenderBuffer;
 	static U32 sGLRenderArray;
 	static U32 sGLRenderIndices;
-	static BOOL sVBOActive;
-	static BOOL sIBOActive;
+	static bool sVBOActive;
+	static bool sIBOActive;
 	static U32 sLastMask;
 	static U32 sAllocatedBytes;
 	static U32 sBindCount;
diff --git a/indra/llui/llui.cpp b/indra/llui/llui.cpp
index 6b74c5a6be..a38d0a0b0b 100644
--- a/indra/llui/llui.cpp
+++ b/indra/llui/llui.cpp
@@ -972,43 +972,53 @@ void gl_ring( F32 radius, F32 width, const LLColor4& center_color, const LLColor
 // Draw gray and white checkerboard with black border
 void gl_rect_2d_checkerboard(const LLRect& rect, GLfloat alpha)
 {
-	// 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++ )
+	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 j = 0; j < PIXELS; j++ )
+			for( S32 i = 0; i < PIXELS; i++ )
 			{
-				checkerboard[i * PIXELS + j] = ((i & 1) ^ (j & 1)) * 0xFF;
+				for( S32 j = 0; j < PIXELS; j++ )
+				{
+					checkerboard[i * PIXELS + j] = ((i & 1) ^ (j & 1)) * 0xFF;
+				}
 			}
+			first = FALSE;
 		}
-		first = FALSE;
-	}
 	
-	gGL.getTexUnit(0)->unbind(LLTexUnit::TT_TEXTURE);
+		gGL.getTexUnit(0)->unbind(LLTexUnit::TT_TEXTURE);
 
-	// ...white squares
-	gGL.color4f( 1.f, 1.f, 1.f, alpha );
-	gl_rect_2d(rect);
+		// ...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();
+		// ...gray squares
+		gGL.color4f( .7f, .7f, .7f, alpha );
+		gGL.flush();
 
-	if (!LLGLSLShader::sNoFixedFunction)
-	{ //polygon stipple is deprecated
 		glPolygonStipple( checkerboard );
 
 		LLGLEnable polygon_stipple(GL_POLYGON_STIPPLE);
 		gl_rect_2d(rect);
 	}
 	else
-	{
-		gl_rect_2d(rect);
+	{ //polygon stipple is deprecated, use "Checker" texture
+		LLPointer<LLUIImage> img = LLUI::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();
 }
 
diff --git a/indra/newview/app_settings/settings.xml b/indra/newview/app_settings/settings.xml
index ea00a0204d..992618ba11 100644
--- a/indra/newview/app_settings/settings.xml
+++ b/indra/newview/app_settings/settings.xml
@@ -7609,6 +7609,17 @@
       <key>Value</key>
       <integer>1</integer>
     </map>
+  <key>RenderCompressTextures</key>
+  <map>
+    <key>Comment</key>
+    <string>Enable texture compression on OpenGL 3.0 and later implementations (EXPERIMENTAL, requires restart)</string>
+    <key>Persist</key>
+    <integer>1</integer>
+    <key>Type</key>
+    <string>Boolean</string>
+    <key>Value</key>
+    <integer>0</integer>
+  </map>
     <key>RenderPerformanceTest</key>
     <map>
       <key>Comment</key>
@@ -9079,6 +9090,28 @@
       <key>Value</key>
       <integer>1</integer>
     </map>
+  <key>RenderAutoMuteByteLimit</key>
+  <map>
+    <key>Comment</key>
+    <string>Maximum bytes of attachments before an avatar is automatically visually muted (0 for no limit).</string>
+    <key>Persist</key>
+    <integer>1</integer>
+    <key>Type</key>
+    <string>U32</string>
+    <key>Value</key>
+    <integer>0</integer>
+  </map>
+  <key>RenderAutoMuteSurfaceAreaLimit</key>
+  <map>
+    <key>Comment</key>
+    <string>Maximum surface area of attachments before an avatar is automatically visually muted (0 for no limit).</string>
+    <key>Persist</key>
+    <integer>1</integer>
+    <key>Type</key>
+    <string>F32</string>
+    <key>Value</key>
+    <integer>0</integer>
+  </map>
     <key>RenderUseShaderLOD</key>
     <map>
       <key>Comment</key>
diff --git a/indra/newview/app_settings/shaders/class1/avatar/pickAvatarF.glsl b/indra/newview/app_settings/shaders/class1/avatar/pickAvatarF.glsl
index 3e4d438ed3..7a35905280 100644
--- a/indra/newview/app_settings/shaders/class1/avatar/pickAvatarF.glsl
+++ b/indra/newview/app_settings/shaders/class1/avatar/pickAvatarF.glsl
@@ -24,7 +24,9 @@
  */
 
 #ifdef DEFINE_GL_FRAGCOLOR
-out vec4 gl_FragColor;
+out vec4 frag_color;
+#else
+#define frag_color gl_FragColor
 #endif
 
 VARYING vec4 vertex_color;
@@ -34,5 +36,5 @@ uniform sampler2D diffuseMap;
 
 void main() 
 {
-	gl_FragColor = vec4(vertex_color.rgb, texture2D(diffuseMap, vary_texcoord0.xy).a);
+	frag_color = vec4(vertex_color.rgb, texture2D(diffuseMap, vary_texcoord0.xy).a);
 }
diff --git a/indra/newview/app_settings/shaders/class1/deferred/alphaF.glsl b/indra/newview/app_settings/shaders/class1/deferred/alphaF.glsl
index c012efa056..dd87ddb330 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/alphaF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/alphaF.glsl
@@ -26,15 +26,15 @@
 #extension GL_ARB_texture_rectangle : enable
 
 #ifdef DEFINE_GL_FRAGCOLOR
-out vec4 gl_FragColor;
+out vec4 frag_color;
+#else
+#define frag_color gl_FragColor
 #endif
 
 uniform sampler2DRect depthMap;
 
 vec4 diffuseLookup(vec2 texcoord);
 
-uniform mat4 shadow_matrix[6];
-uniform vec4 shadow_clip;
 uniform vec2 screen_res;
 
 vec3 atmosLighting(vec3 light);
@@ -69,6 +69,6 @@ void main()
 
 	color.rgb += diff.rgb * vary_pointlight_col.rgb;
 
-	gl_FragColor = color;
+	frag_color = color;
 }
 
diff --git a/indra/newview/app_settings/shaders/class1/deferred/alphaNonIndexedF.glsl b/indra/newview/app_settings/shaders/class1/deferred/alphaNonIndexedF.glsl
index 8641827777..beb3290187 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/alphaNonIndexedF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/alphaNonIndexedF.glsl
@@ -26,15 +26,15 @@
 #extension GL_ARB_texture_rectangle : enable
 
 #ifdef DEFINE_GL_FRAGCOLOR
-out vec4 gl_FragColor;
+out vec4 frag_color;
+#else
+#define frag_color gl_FragColor
 #endif
 
 uniform sampler2DRect depthMap;
 uniform sampler2D diffuseMap;
 
 
-uniform mat4 shadow_matrix[6];
-uniform vec4 shadow_clip;
 uniform vec2 screen_res;
 
 vec3 atmosLighting(vec3 light);
@@ -81,9 +81,9 @@ void main()
 
 	color.rgb += diff.rgb * vary_pointlight_col.rgb;
 
-	gl_FragColor = color;
-	//gl_FragColor = vec4(1,0,1,1);
-	//gl_FragColor = vec4(1,0,1,1)*shadow;
+	frag_color = color;
+	//frag_color = vec4(1,0,1,1);
+	//frag_color = vec4(1,0,1,1)*shadow;
 	
 }
 
diff --git a/indra/newview/app_settings/shaders/class1/deferred/alphaNonIndexedNoColorF.glsl b/indra/newview/app_settings/shaders/class1/deferred/alphaNonIndexedNoColorF.glsl
index c13ea702db..cb87b754b4 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/alphaNonIndexedNoColorF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/alphaNonIndexedNoColorF.glsl
@@ -26,14 +26,14 @@
 #extension GL_ARB_texture_rectangle : enable
 
 #ifdef DEFINE_GL_FRAGCOLOR
-out vec4 gl_FragColor;
+out vec4 frag_color;
+#else
+#define frag_color gl_FragColor
 #endif
 
 uniform sampler2DRect depthMap;
 uniform sampler2D diffuseMap;
 
-uniform mat4 shadow_matrix[6];
-uniform vec4 shadow_clip;
 uniform vec2 screen_res;
 
 vec3 atmosLighting(vec3 light);
@@ -79,6 +79,6 @@ void main()
 
 	color.rgb += diff.rgb * vary_pointlight_col.rgb;
 
-	gl_FragColor = color;
+	frag_color = color;
 }
 
diff --git a/indra/newview/app_settings/shaders/class1/deferred/alphaSkinnedV.glsl b/indra/newview/app_settings/shaders/class1/deferred/alphaSkinnedV.glsl
index 0170ad4b55..5a0e8ff684 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/alphaSkinnedV.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/alphaSkinnedV.glsl
@@ -41,7 +41,6 @@ vec3 atmosAffectDirectionalLight(float lightIntensity);
 VARYING vec3 vary_position;
 VARYING vec3 vary_ambient;
 VARYING vec3 vary_directional;
-VARYING vec3 vary_normal;
 VARYING vec3 vary_fragcoord;
 VARYING vec3 vary_pointlight_col;
 VARYING vec4 vertex_color;
@@ -55,23 +54,29 @@ uniform vec3 light_direction[8];
 uniform vec3 light_attenuation[8]; 
 uniform vec3 light_diffuse[8];
 
+float calcDirectionalLight(vec3 n, vec3 l)
+{
+        float a = max(dot(n,l),0.0);
+        return a;
+}
+
 float calcPointLightOrSpotLight(vec3 v, vec3 n, vec4 lp, vec3 ln, float la, float fa, float is_pointlight)
 {
 	//get light vector
 	vec3 lv = lp.xyz-v;
 	
 	//get distance
-	float d = length(lv);
+	float d = dot(lv,lv);
 	
 	float da = 0.0;
 
 	if (d > 0.0 && la > 0.0 && fa > 0.0)
 	{
 		//normalize light vector
-		lv *= 1.0/d;
+		lv = normalize(lv);
 	
 		//distance attenuation
-		float dist2 = d*d/(la*la);
+		float dist2 = d/la;
 		da = clamp(1.0-(dist2-1.0*(1.0-fa))/fa, 0.0, 1.0);
 
 		// spotlight coefficient.
@@ -79,7 +84,7 @@ float calcPointLightOrSpotLight(vec3 v, vec3 n, vec4 lp, vec3 ln, float la, floa
 		da *= spot*spot; // GL_SPOT_EXPONENT=2
 
 		//angular attenuation
-		da *= calcDirectionalLight(n, lv);
+		da *= max(dot(n, lv), 0.0);		
 	}
 
 	return da;	
@@ -104,8 +109,7 @@ void main()
 	gl_Position = frag_pos;
 	
 	vary_position = pos.xyz;
-	vary_normal = norm;	
-	
+		
 	calcAtmospherics(pos.xyz);
 
 	vec4 col = vec4(0.0, 0.0, 0.0, diffuse_color.a);
diff --git a/indra/newview/app_settings/shaders/class1/deferred/alphaV.glsl b/indra/newview/app_settings/shaders/class1/deferred/alphaV.glsl
index 93b1a114db..cf38a2f4f7 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/alphaV.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/alphaV.glsl
@@ -48,7 +48,6 @@ VARYING vec3 vary_ambient;
 VARYING vec3 vary_directional;
 VARYING vec3 vary_fragcoord;
 VARYING vec3 vary_position;
-VARYING vec3 vary_light;
 VARYING vec3 vary_pointlight_col;
 
 VARYING vec4 vertex_color;
@@ -64,23 +63,29 @@ uniform vec3 light_direction[8];
 uniform vec3 light_attenuation[8]; 
 uniform vec3 light_diffuse[8];
 
+float calcDirectionalLight(vec3 n, vec3 l)
+{
+        float a = max(dot(n,l),0.0);
+        return a;
+}
+
 float calcPointLightOrSpotLight(vec3 v, vec3 n, vec4 lp, vec3 ln, float la, float fa, float is_pointlight)
 {
 	//get light vector
 	vec3 lv = lp.xyz-v;
 	
 	//get distance
-	float d = length(lv);
+	float d = dot(lv,lv);
 	
 	float da = 0.0;
 
 	if (d > 0.0 && la > 0.0 && fa > 0.0)
 	{
 		//normalize light vector
-		lv *= 1.0/d;
+		lv = normalize(lv);
 	
 		//distance attenuation
-		float dist2 = d*d/(la*la);
+		float dist2 = d/la;
 		da = clamp(1.0-(dist2-1.0*(1.0-fa))/fa, 0.0, 1.0);
 
 		// spotlight coefficient.
@@ -88,7 +93,7 @@ float calcPointLightOrSpotLight(vec3 v, vec3 n, vec4 lp, vec3 ln, float la, floa
 		da *= spot*spot; // GL_SPOT_EXPONENT=2
 
 		//angular attenuation
-		da *= calcDirectionalLight(n, lv);
+		da *= max(dot(n, lv), 0.0);		
 	}
 
 	return da;	
@@ -123,14 +128,11 @@ void main()
 	col.rgb += light_diffuse[7].rgb*calcPointLightOrSpotLight(pos.xyz, norm, light_position[7], light_direction[7], light_attenuation[7].x, light_attenuation[7].y, light_attenuation[7].z);
 	
 	vary_pointlight_col = col.rgb*diffuse_color.rgb;
-
 	col.rgb = vec3(0,0,0);
 
 	// Add windlight lights
 	col.rgb = atmosAmbient(vec3(0.));
 	
-	vary_light = light_position[0].xyz;
-	
 	vary_ambient = col.rgb*diffuse_color.rgb;
 	vary_directional.rgb = diffuse_color.rgb*atmosAffectDirectionalLight(max(calcDirectionalLight(norm, light_position[0].xyz), (1.0-diffuse_color.a)*(1.0-diffuse_color.a)));
 	
diff --git a/indra/newview/app_settings/shaders/class1/deferred/attachmentShadowF.glsl b/indra/newview/app_settings/shaders/class1/deferred/attachmentShadowF.glsl
index 402f681631..22c9a4d14e 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/attachmentShadowF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/attachmentShadowF.glsl
@@ -23,17 +23,17 @@
  */
 
 #ifdef DEFINE_GL_FRAGCOLOR
-out vec4 gl_FragColor;
+out vec4 frag_color;
+#else
+#define frag_color gl_FragColor
 #endif
 
 uniform sampler2D diffuseMap;
 
-VARYING vec4 vertex_color;
 VARYING vec2 vary_texcoord0;
 
 void main() 
 {
-	//gl_FragColor = vec4(1,1,1,vertex_color.a * texture2D(diffuseMap, vary_texcoord0.xy).a);
-	gl_FragColor = vec4(1,1,1,1);
+	frag_color = vec4(1,1,1,1);
 }
 
diff --git a/indra/newview/app_settings/shaders/class1/deferred/attachmentShadowV.glsl b/indra/newview/app_settings/shaders/class1/deferred/attachmentShadowV.glsl
index ded6cced27..81961d7746 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/attachmentShadowV.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/attachmentShadowV.glsl
@@ -27,11 +27,8 @@ uniform mat4 modelview_matrix;
 uniform mat4 texture_matrix0;
 
 ATTRIBUTE vec3 position;
-ATTRIBUTE vec4 diffuse_color;
 ATTRIBUTE vec2 texcoord0;
 
-VARYING vec4 vertex_color;
-
 mat4 getObjectSkinnedTransform();
 
 void main()
@@ -42,8 +39,6 @@ void main()
 	mat = modelview_matrix * mat;
 	vec3 pos = (mat*vec4(position.xyz, 1.0)).xyz;
 	
-	vertex_color = diffuse_color;
-	
 	vec4 p = projection_matrix * vec4(pos, 1.0);
 	p.z = max(p.z, -p.w+0.01);
 	gl_Position = p;
diff --git a/indra/newview/app_settings/shaders/class1/deferred/avatarAlphaNoColorV.glsl b/indra/newview/app_settings/shaders/class1/deferred/avatarAlphaNoColorV.glsl
new file mode 100644
index 0000000000..5f395801e5
--- /dev/null
+++ b/indra/newview/app_settings/shaders/class1/deferred/avatarAlphaNoColorV.glsl
@@ -0,0 +1,148 @@
+/** 
+ * @file avatarAlphaNoColorV.glsl
+ *
+ * $LicenseInfo:firstyear=2007&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2007, Linden Research, Inc.
+ * 
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ * 
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ * 
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ * 
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+uniform mat4 projection_matrix;
+
+ATTRIBUTE vec3 position;
+ATTRIBUTE vec3 normal;
+ATTRIBUTE vec2 texcoord0;
+
+vec4 calcLighting(vec3 pos, vec3 norm, vec4 color, vec4 baseCol);
+mat4 getSkinnedTransform();
+void calcAtmospherics(vec3 inPositionEye);
+
+float calcDirectionalLight(vec3 n, vec3 l);
+float calcPointLightOrSpotLight(vec3 v, vec3 n, vec4 lp, vec3 ln, float la, float is_pointlight);
+
+vec3 atmosAmbient(vec3 light);
+vec3 atmosAffectDirectionalLight(float lightIntensity);
+vec3 scaleDownLight(vec3 light);
+vec3 scaleUpLight(vec3 light);
+
+VARYING vec3 vary_position;
+VARYING vec3 vary_ambient;
+VARYING vec3 vary_directional;
+VARYING vec3 vary_fragcoord;
+VARYING vec3 vary_pointlight_col;
+VARYING vec2 vary_texcoord0;
+
+
+uniform float near_clip;
+
+uniform vec4 color;
+
+uniform vec4 light_position[8];
+uniform vec3 light_direction[8];
+uniform vec3 light_attenuation[8]; 
+uniform vec3 light_diffuse[8];
+
+float calcDirectionalLight(vec3 n, vec3 l)
+{
+        float a = max(dot(n,l),0.0);
+        return a;
+}
+
+float calcPointLightOrSpotLight(vec3 v, vec3 n, vec4 lp, vec3 ln, float la, float fa, float is_pointlight)
+{
+	//get light vector
+	vec3 lv = lp.xyz-v;
+	
+	//get distance
+	float d = dot(lv,lv);
+	
+	float da = 0.0;
+
+	if (d > 0.0 && la > 0.0 && fa > 0.0)
+	{
+		//normalize light vector
+		lv = normalize(lv);
+	
+		//distance attenuation
+		float dist2 = d/la;
+		da = clamp(1.0-(dist2-1.0*(1.0-fa))/fa, 0.0, 1.0);
+
+		// spotlight coefficient.
+		float spot = max(dot(-ln, lv), is_pointlight);
+		da *= spot*spot; // GL_SPOT_EXPONENT=2
+
+		//angular attenuation
+		da *= max(dot(n, lv), 0.0);		
+	}
+
+	return da;	
+}
+
+void main()
+{
+	vary_texcoord0 = texcoord0;
+				
+	vec4 pos;
+	vec3 norm;
+	
+	mat4 trans = getSkinnedTransform();
+	vec4 pos_in = vec4(position.xyz, 1.0);
+	pos.x = dot(trans[0], pos_in);
+	pos.y = dot(trans[1], pos_in);
+	pos.z = dot(trans[2], pos_in);
+	pos.w = 1.0;
+	
+	norm.x = dot(trans[0].xyz, normal);
+	norm.y = dot(trans[1].xyz, normal);
+	norm.z = dot(trans[2].xyz, normal);
+	norm = normalize(norm);
+		
+	vec4 frag_pos = projection_matrix * pos;
+	gl_Position = frag_pos;
+	
+	vary_position = pos.xyz;
+	
+	calcAtmospherics(pos.xyz);
+
+	vec4 col = vec4(0.0, 0.0, 0.0, 1.0);
+
+	// Collect normal lights
+	col.rgb += light_diffuse[2].rgb*calcPointLightOrSpotLight(pos.xyz, norm, light_position[2], light_direction[2], light_attenuation[2].x, light_attenuation[2].y, light_attenuation[2].z);
+	col.rgb += light_diffuse[3].rgb*calcPointLightOrSpotLight(pos.xyz, norm, light_position[3], light_direction[3], light_attenuation[3].x, light_attenuation[3].y, light_attenuation[3].z);
+	col.rgb += light_diffuse[4].rgb*calcPointLightOrSpotLight(pos.xyz, norm, light_position[4], light_direction[4], light_attenuation[4].x, light_attenuation[4].y, light_attenuation[4].z);
+	col.rgb += light_diffuse[5].rgb*calcPointLightOrSpotLight(pos.xyz, norm, light_position[5], light_direction[5], light_attenuation[5].x, light_attenuation[5].y, light_attenuation[5].z);
+	col.rgb += light_diffuse[6].rgb*calcPointLightOrSpotLight(pos.xyz, norm, light_position[6], light_direction[6], light_attenuation[6].x, light_attenuation[6].y, light_attenuation[6].z);
+	col.rgb += light_diffuse[7].rgb*calcPointLightOrSpotLight(pos.xyz, norm, light_position[7], light_direction[7], light_attenuation[7].x, light_attenuation[7].y, light_attenuation[7].z);
+	
+	vary_pointlight_col = col.rgb*color.rgb;
+
+	col.rgb = vec3(0,0,0);
+
+	// Add windlight lights
+	col.rgb = atmosAmbient(vec3(0.));
+	
+	vary_ambient = col.rgb*color.rgb;
+	vary_directional = color.rgb*atmosAffectDirectionalLight(max(calcDirectionalLight(norm, light_position[0].xyz), 0.0));
+	
+	col.rgb = col.rgb * color.rgb;
+	
+	vary_fragcoord.xyz = frag_pos.xyz + vec3(0,0,near_clip);
+}
+
+
diff --git a/indra/newview/app_settings/shaders/class1/deferred/avatarAlphaV.glsl b/indra/newview/app_settings/shaders/class1/deferred/avatarAlphaV.glsl
index d7b90978ba..d6149fcc32 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/avatarAlphaV.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/avatarAlphaV.glsl
@@ -59,23 +59,29 @@ uniform vec3 light_direction[8];
 uniform vec3 light_attenuation[8]; 
 uniform vec3 light_diffuse[8];
 
+float calcDirectionalLight(vec3 n, vec3 l)
+{
+        float a = max(dot(n,l),0.0);
+        return a;
+}
+
 float calcPointLightOrSpotLight(vec3 v, vec3 n, vec4 lp, vec3 ln, float la, float fa, float is_pointlight)
 {
 	//get light vector
 	vec3 lv = lp.xyz-v;
 	
 	//get distance
-	float d = length(lv);
+	float d = dot(lv,lv);
 	
 	float da = 0.0;
 
 	if (d > 0.0 && la > 0.0 && fa > 0.0)
 	{
 		//normalize light vector
-		lv *= 1.0/d;
+		lv = normalize(lv);
 	
 		//distance attenuation
-		float dist2 = d*d/(la*la);
+		float dist2 = d/la;
 		da = clamp(1.0-(dist2-1.0*(1.0-fa))/fa, 0.0, 1.0);
 
 		// spotlight coefficient.
@@ -83,7 +89,7 @@ float calcPointLightOrSpotLight(vec3 v, vec3 n, vec4 lp, vec3 ln, float la, floa
 		da *= spot*spot; // GL_SPOT_EXPONENT=2
 
 		//angular attenuation
-		da *= calcDirectionalLight(n, lv);
+		da *= max(dot(n, lv), 0.0);		
 	}
 
 	return da;	
diff --git a/indra/newview/app_settings/shaders/class1/deferred/avatarF.glsl b/indra/newview/app_settings/shaders/class1/deferred/avatarF.glsl
index 9a3b2e3e8a..46d2aa4877 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/avatarF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/avatarF.glsl
@@ -24,7 +24,9 @@
  */
 
 #ifdef DEFINE_GL_FRAGCOLOR
-out vec4 gl_FragData[3];
+out vec4 frag_data[3];
+#else
+#define frag_data gl_FragData
 #endif
 
 uniform sampler2D diffuseMap;
@@ -41,9 +43,9 @@ void main()
 		discard;
 	}
 	
-	gl_FragData[0] = vec4(diff.rgb, 0.0);
-	gl_FragData[1] = vec4(0,0,0,0);
+	frag_data[0] = vec4(diff.rgb, 0.0);
+	frag_data[1] = vec4(0,0,0,0);
 	vec3 nvn = normalize(vary_normal);
-	gl_FragData[2] = vec4(nvn.xy * 0.5 + 0.5, nvn.z, 0.0);
+	frag_data[2] = vec4(nvn.xy * 0.5 + 0.5, nvn.z, 0.0);
 }
 
diff --git a/indra/newview/app_settings/shaders/class1/deferred/avatarShadowF.glsl b/indra/newview/app_settings/shaders/class1/deferred/avatarShadowF.glsl
index 558a88009a..3686f2f647 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/avatarShadowF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/avatarShadowF.glsl
@@ -24,7 +24,9 @@
  */
  
 #ifdef DEFINE_GL_FRAGCOLOR
-out vec4 gl_FragColor;
+out vec4 frag_color;
+#else
+#define frag_color gl_FragColor
 #endif
 
 uniform sampler2D diffuseMap;
@@ -33,7 +35,7 @@ VARYING vec4 post_pos;
 
 void main() 
 {
-	gl_FragColor = vec4(1,1,1,1);
+	frag_color = vec4(1,1,1,1);
 
 	gl_FragDepth = max(post_pos.z/post_pos.w*0.5+0.5, 0.0);
 }
diff --git a/indra/newview/app_settings/shaders/class1/deferred/blurLightF.glsl b/indra/newview/app_settings/shaders/class1/deferred/blurLightF.glsl
index 60d4dae99f..f400eb7a5b 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/blurLightF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/blurLightF.glsl
@@ -26,7 +26,9 @@
 #extension GL_ARB_texture_rectangle : enable
 
 #ifdef DEFINE_GL_FRAGCOLOR
-out vec4 gl_FragColor;
+out vec4 frag_color;
+#else
+#define frag_color gl_FragColor
 #endif
 
 uniform sampler2DRect depthMap;
@@ -111,6 +113,6 @@ void main()
 	col /= defined_weight.xyxx;
 	col.y *= col.y;
 	
-	gl_FragColor = col;
+	frag_color = col;
 }
 
diff --git a/indra/newview/app_settings/shaders/class1/deferred/bumpF.glsl b/indra/newview/app_settings/shaders/class1/deferred/bumpF.glsl
index 6cc5f23aca..680eadb852 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/bumpF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/bumpF.glsl
@@ -24,7 +24,9 @@
  */
  
 #ifdef DEFINE_GL_FRAGCOLOR
-out vec4 gl_FragData[3];
+out vec4 frag_data[3];
+#else
+#define frag_data gl_FragData
 #endif
 
 uniform sampler2D diffuseMap;
@@ -46,9 +48,9 @@ void main()
 			  dot(norm,vary_mat1),
 			  dot(norm,vary_mat2));
 						
-	gl_FragData[0] = vec4(col, 0.0);
-	gl_FragData[1] = vertex_color.aaaa; // spec
-	//gl_FragData[1] = vec4(vec3(vertex_color.a), vertex_color.a+(1.0-vertex_color.a)*vertex_color.a); // spec - from former class3 - maybe better, but not so well tested
+	frag_data[0] = vec4(col, 0.0);
+	frag_data[1] = vertex_color.aaaa; // spec
+	//frag_data[1] = vec4(vec3(vertex_color.a), vertex_color.a+(1.0-vertex_color.a)*vertex_color.a); // spec - from former class3 - maybe better, but not so well tested
 	vec3 nvn = normalize(tnorm);
-	gl_FragData[2] = vec4(nvn.xy * 0.5 + 0.5, nvn.z, 0.0);
+	frag_data[2] = vec4(nvn.xy * 0.5 + 0.5, nvn.z, 0.0);
 }
diff --git a/indra/newview/app_settings/shaders/class1/deferred/bumpSkinnedV.glsl b/indra/newview/app_settings/shaders/class1/deferred/bumpSkinnedV.glsl
index 6c205074b4..8ba75010a2 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/bumpSkinnedV.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/bumpSkinnedV.glsl
@@ -30,7 +30,7 @@ ATTRIBUTE vec3 position;
 ATTRIBUTE vec4 diffuse_color;
 ATTRIBUTE vec3 normal;
 ATTRIBUTE vec2 texcoord0;
-ATTRIBUTE vec2 texcoord2;
+ATTRIBUTE vec3 binormal;
 
 VARYING vec3 vary_mat0;
 VARYING vec3 vary_mat1;
@@ -52,7 +52,7 @@ void main()
 	
 	
 	vec3 n = normalize((mat * vec4(normal.xyz+position.xyz, 1.0)).xyz-pos.xyz);
-	vec3 b = normalize((mat * vec4(vec4(texcoord2,0,1).xyz+position.xyz, 1.0)).xyz-pos.xyz);
+	vec3 b = normalize((mat * vec4(binormal.xyz+position.xyz, 1.0)).xyz-pos.xyz);
 	vec3 t = cross(b, n);
 	
 	vary_mat0 = vec3(t.x, b.x, n.x);
diff --git a/indra/newview/app_settings/shaders/class1/deferred/cloudsF.glsl b/indra/newview/app_settings/shaders/class1/deferred/cloudsF.glsl
index db272cf601..1d8ca04ccd 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/cloudsF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/cloudsF.glsl
@@ -25,7 +25,9 @@
  
 
 #ifdef DEFINE_GL_FRAGCOLOR
-out vec4 gl_FragData[3];
+out vec4 frag_data[3];
+#else
+#define frag_data gl_FragData
 #endif
 
 /////////////////////////////////////////////////////////////////////////
@@ -98,8 +100,8 @@ void main()
 	color *= 2.;
 
 	/// Gamma correct for WL (soft clip effect).
-	gl_FragData[0] = vec4(scaleSoftClip(color.rgb), alpha1);
-	gl_FragData[1] = vec4(0.0,0.0,0.0,0.0);
-	gl_FragData[2] = vec4(0,0,1,0);
+	frag_data[0] = vec4(scaleSoftClip(color.rgb), alpha1);
+	frag_data[1] = vec4(0.0,0.0,0.0,0.0);
+	frag_data[2] = vec4(0,0,1,0);
 }
 
diff --git a/indra/newview/app_settings/shaders/class1/deferred/cloudsV.glsl b/indra/newview/app_settings/shaders/class1/deferred/cloudsV.glsl
index 64e094e3c5..17f425475c 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/cloudsV.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/cloudsV.glsl
@@ -50,18 +50,18 @@ uniform vec4 sunlight_color;
 uniform vec4 ambient;
 uniform vec4 blue_horizon;
 uniform vec4 blue_density;
-uniform vec4 haze_horizon;
-uniform vec4 haze_density;
+uniform float haze_horizon;
+uniform float haze_density;
 
-uniform vec4 cloud_shadow;
-uniform vec4 density_multiplier;
-uniform vec4 max_y;
+uniform float cloud_shadow;
+uniform float density_multiplier;
+uniform float max_y;
 
 uniform vec4 glow;
 
 uniform vec4 cloud_color;
 
-uniform vec4 cloud_scale;
+uniform float cloud_scale;
 
 void main()
 {
@@ -77,7 +77,7 @@ void main()
 	// Set altitude
 	if (P.y > 0.)
 	{
-		P *= (max_y.x / P.y);
+		P *= (max_y / P.y);
 	}
 	else
 	{
@@ -99,12 +99,12 @@ void main()
 
 	// Sunlight attenuation effect (hue and brightness) due to atmosphere
 	// this is used later for sunlight modulation at various altitudes
-	light_atten = (blue_density * 1.0 + haze_density.x * 0.25) * (density_multiplier.x * max_y.x);
+	light_atten = (blue_density + vec4(haze_density * 0.25)) * (density_multiplier * max_y);
 
 	// Calculate relative weights
-	temp1 = blue_density + haze_density.x;
+	temp1 = blue_density + haze_density;
 	blue_weight = blue_density / temp1;
-	haze_weight = haze_density.x / temp1;
+	haze_weight = haze_density / temp1;
 
 	// Compute sunlight from P & lightnorm (for long rays like sky)
 	temp2.y = max(0., max(0., Pn.y) * 1.0 + lightnorm.y );
@@ -112,7 +112,7 @@ void main()
 	sunlight *= exp( - light_atten * temp2.y);
 
 	// Distance
-	temp2.z = Plen * density_multiplier.x;
+	temp2.z = Plen * density_multiplier;
 
 	// Transparency (-> temp1)
 	// ATI Bugfix -- can't store temp1*temp2.z in a variable because the ati
@@ -136,14 +136,14 @@ void main()
 
 	// Increase ambient when there are more clouds
 	vec4 tmpAmbient = ambient;
-	tmpAmbient += (1. - tmpAmbient) * cloud_shadow.x * 0.5; 
+	tmpAmbient += (1. - tmpAmbient) * cloud_shadow * 0.5; 
 
 	// Dim sunlight by cloud shadow percentage
-	sunlight *= (1. - cloud_shadow.x);
+	sunlight *= (1. - cloud_shadow);
 
 	// Haze color below cloud
 	vec4 additiveColorBelowCloud = (	  blue_horizon * blue_weight * (sunlight + tmpAmbient)
-				+ (haze_horizon.r * haze_weight) * (sunlight * temp2.x + tmpAmbient)
+				+ (haze_horizon * haze_weight) * (sunlight * temp2.x + tmpAmbient)
 			 );	
 
 	// CLOUDS
@@ -164,13 +164,13 @@ void main()
 	vec4 oHazeColorBelowCloud = additiveColorBelowCloud * (1. - temp1);
 
 	// Make a nice cloud density based on the cloud_shadow value that was passed in.
-	vary_CloudDensity = 2. * (cloud_shadow.x - 0.25);
+	vary_CloudDensity = 2. * (cloud_shadow - 0.25);
 
 
 	// Texture coords
 	vary_texcoord0 = texcoord0;
 	vary_texcoord0.xy -= 0.5;
-	vary_texcoord0.xy /= cloud_scale.x;
+	vary_texcoord0.xy /= cloud_scale;
 	vary_texcoord0.xy += 0.5;
 
 	vary_texcoord1 = vary_texcoord0;
diff --git a/indra/newview/app_settings/shaders/class1/deferred/cofF.glsl b/indra/newview/app_settings/shaders/class1/deferred/cofF.glsl
index e612efba61..ccbc3c557c 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/cofF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/cofF.glsl
@@ -26,7 +26,9 @@
 #extension GL_ARB_texture_rectangle : enable
 
 #ifdef DEFINE_GL_FRAGCOLOR
-out vec4 gl_FragColor;
+out vec4 frag_color;
+#else
+#define frag_color gl_FragColor
 #endif
 
 uniform sampler2DRect diffuseRect;
@@ -83,6 +85,6 @@ void main()
 	sc = max(sc, -max_cof);
 	
 	vec4 bloom = texture2D(bloomMap, vary_fragcoord.xy/screen_res);
-	gl_FragColor.rgb = diff.rgb + bloom.rgb;
-	gl_FragColor.a = sc/max_cof*0.5+0.5;
+	frag_color.rgb = diff.rgb + bloom.rgb;
+	frag_color.a = sc/max_cof*0.5+0.5;
 }
diff --git a/indra/newview/app_settings/shaders/class1/deferred/diffuseAlphaMaskF.glsl b/indra/newview/app_settings/shaders/class1/deferred/diffuseAlphaMaskF.glsl
index e9989a4e48..b2027d3a5d 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/diffuseAlphaMaskF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/diffuseAlphaMaskF.glsl
@@ -24,7 +24,9 @@
  */
 
 #ifdef DEFINE_GL_FRAGCOLOR
-out vec4 gl_FragData[3];
+out vec4 frag_data[3];
+#else
+#define frag_data gl_FragData
 #endif
 
 uniform float minimum_alpha;
@@ -44,9 +46,9 @@ void main()
 		discard;
 	}
 
-	gl_FragData[0] = vec4(col.rgb, 0.0);
-	gl_FragData[1] = vec4(0,0,0,0); // spec
+	frag_data[0] = vec4(col.rgb, 0.0);
+	frag_data[1] = vec4(0,0,0,0); // spec
 	vec3 nvn = normalize(vary_normal);
-	gl_FragData[2] = vec4(nvn.xy * 0.5 + 0.5, nvn.z, 0.0);
+	frag_data[2] = vec4(nvn.xy * 0.5 + 0.5, nvn.z, 0.0);
 }
 
diff --git a/indra/newview/app_settings/shaders/class1/deferred/diffuseAlphaMaskIndexedF.glsl b/indra/newview/app_settings/shaders/class1/deferred/diffuseAlphaMaskIndexedF.glsl
index fdf8d72b38..ead384b07c 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/diffuseAlphaMaskIndexedF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/diffuseAlphaMaskIndexedF.glsl
@@ -24,7 +24,9 @@
  */
 
 #ifdef DEFINE_GL_FRAGCOLOR
-out vec4 gl_FragData[3];
+out vec4 frag_data[3];
+#else
+#define frag_data gl_FragData
 #endif
 
 VARYING vec3 vary_normal;
@@ -43,8 +45,8 @@ void main()
 		discard;
 	}
 
-	gl_FragData[0] = vec4(col.rgb, 0.0);
-	gl_FragData[1] = vec4(0,0,0,0);
+	frag_data[0] = vec4(col.rgb, 0.0);
+	frag_data[1] = vec4(0,0,0,0);
 	vec3 nvn = normalize(vary_normal);
-	gl_FragData[2] = vec4(nvn.xy * 0.5 + 0.5, nvn.z, 0.0);
+	frag_data[2] = vec4(nvn.xy * 0.5 + 0.5, nvn.z, 0.0);
 }
diff --git a/indra/newview/app_settings/shaders/class1/deferred/diffuseAlphaMaskNoColorF.glsl b/indra/newview/app_settings/shaders/class1/deferred/diffuseAlphaMaskNoColorF.glsl
index bb20e2ca47..f73fa6f231 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/diffuseAlphaMaskNoColorF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/diffuseAlphaMaskNoColorF.glsl
@@ -25,7 +25,9 @@
  
 
 #ifdef DEFINE_GL_FRAGCOLOR
-out vec4 gl_FragData[3];
+out vec4 frag_data[3];
+#else
+#define frag_data gl_FragData
 #endif
 
 uniform float minimum_alpha;
@@ -44,9 +46,9 @@ void main()
 		discard;
 	}
 
-	gl_FragData[0] = vec4(col.rgb, 0.0);
-	gl_FragData[1] = vec4(0,0,0,0); // spec
+	frag_data[0] = vec4(col.rgb, 0.0);
+	frag_data[1] = vec4(0,0,0,0); // spec
 	vec3 nvn = normalize(vary_normal);
-	gl_FragData[2] = vec4(nvn.xy * 0.5 + 0.5, nvn.z, 0.0);
+	frag_data[2] = vec4(nvn.xy * 0.5 + 0.5, nvn.z, 0.0);
 }
 
diff --git a/indra/newview/app_settings/shaders/class1/deferred/diffuseF.glsl b/indra/newview/app_settings/shaders/class1/deferred/diffuseF.glsl
index 7bde49eb86..227aa2aae3 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/diffuseF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/diffuseF.glsl
@@ -24,7 +24,9 @@
  */
  
 #ifdef DEFINE_GL_FRAGCOLOR
-out vec4 gl_FragData[3];
+out vec4 frag_data[3];
+#else
+#define frag_data gl_FragData
 #endif
 
 uniform sampler2D diffuseMap;
@@ -36,10 +38,10 @@ VARYING vec2 vary_texcoord0;
 void main() 
 {
 	vec3 col = vertex_color.rgb * texture2D(diffuseMap, vary_texcoord0.xy).rgb;
-	gl_FragData[0] = vec4(col, 0.0);
-	gl_FragData[1] = vertex_color.aaaa; // spec
-	//gl_FragData[1] = vec4(vec3(vertex_color.a), vertex_color.a+(1.0-vertex_color.a)*vertex_color.a); // spec - from former class3 - maybe better, but not so well tested
+	frag_data[0] = vec4(col, 0.0);
+	frag_data[1] = vertex_color.aaaa; // spec
+	//frag_data[1] = vec4(vec3(vertex_color.a), vertex_color.a+(1.0-vertex_color.a)*vertex_color.a); // spec - from former class3 - maybe better, but not so well tested
 	vec3 nvn = normalize(vary_normal);
-	gl_FragData[2] = vec4(nvn.xy * 0.5 + 0.5, nvn.z, 0.0);
+	frag_data[2] = vec4(nvn.xy * 0.5 + 0.5, nvn.z, 0.0);
 }
 
diff --git a/indra/newview/app_settings/shaders/class1/deferred/diffuseIndexedF.glsl b/indra/newview/app_settings/shaders/class1/deferred/diffuseIndexedF.glsl
index 75b45111e0..d442e5403a 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/diffuseIndexedF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/diffuseIndexedF.glsl
@@ -24,7 +24,9 @@
  */
 
 #ifdef DEFINE_GL_FRAGCOLOR
-out vec4 gl_FragData[3];
+out vec4 frag_data[3];
+#else
+#define frag_data gl_FragData
 #endif
 
 VARYING vec3 vary_normal;
@@ -35,9 +37,9 @@ void main()
 {
 	vec3 col = vertex_color.rgb * diffuseLookup(vary_texcoord0.xy).rgb;
 
-	gl_FragData[0] = vec4(col, 0.0);
-	gl_FragData[1] = vertex_color.aaaa; // spec
-	//gl_FragData[1] = vec4(vec3(vertex_color.a), vertex_color.a+(1.0-vertex_color.a)*vertex_color.a); // spec - from former class3 - maybe better, but not so well tested
+	frag_data[0] = vec4(col, 0.0);
+	frag_data[1] = vertex_color.aaaa; // spec
+	//frag_data[1] = vec4(vec3(vertex_color.a), vertex_color.a+(1.0-vertex_color.a)*vertex_color.a); // spec - from former class3 - maybe better, but not so well tested
 	vec3 nvn = normalize(vary_normal);
-	gl_FragData[2] = vec4(nvn.xy * 0.5 + 0.5, nvn.z, 0.0);
+	frag_data[2] = vec4(nvn.xy * 0.5 + 0.5, nvn.z, 0.0);
 }
diff --git a/indra/newview/app_settings/shaders/class1/deferred/dofCombineF.glsl b/indra/newview/app_settings/shaders/class1/deferred/dofCombineF.glsl
index 01e3505359..a425e5062e 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/dofCombineF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/dofCombineF.glsl
@@ -26,7 +26,9 @@
 #extension GL_ARB_texture_rectangle : enable
 
 #ifdef DEFINE_GL_FRAGCOLOR
-out vec4 gl_FragColor;
+out vec4 frag_color;
+#else
+#define frag_color gl_FragColor
 #endif
 
 uniform sampler2DRect diffuseRect;
@@ -37,14 +39,24 @@ uniform vec2 screen_res;
 
 uniform float max_cof;
 uniform float res_scale;
+uniform float dof_width;
+uniform float dof_height;
 
 VARYING vec2 vary_fragcoord;
 
+vec4 dofSample(sampler2DRect tex, vec2 tc)
+{
+	tc.x = min(tc.x, dof_width);
+	tc.y = min(tc.y, dof_height);
+
+	return texture2DRect(tex, tc);
+}
+
 void main() 
 {
 	vec2 tc = vary_fragcoord.xy;
 	
-	vec4 dof = texture2DRect(diffuseRect, vary_fragcoord.xy*res_scale);
+	vec4 dof = dofSample(diffuseRect, vary_fragcoord.xy*res_scale);
 	
 	vec4 diff = texture2DRect(lightMap, vary_fragcoord.xy);
 
@@ -63,5 +75,5 @@ void main()
 		diff = mix(diff, col*0.25, a);
 	}
 
-	gl_FragColor = mix(diff, dof, a);
+	frag_color = mix(diff, dof, a);
 }
diff --git a/indra/newview/app_settings/shaders/class1/deferred/emissiveF.glsl b/indra/newview/app_settings/shaders/class1/deferred/emissiveF.glsl
index 92f78125d8..6aa4d7b4ed 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/emissiveF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/emissiveF.glsl
@@ -26,7 +26,9 @@
 #extension GL_ARB_texture_rectangle : enable
 
 #ifdef DEFINE_GL_FRAGCOLOR
-out vec4 gl_FragColor;
+out vec4 frag_color;
+#else
+#define frag_color gl_FragColor
 #endif
 
 vec3 fullbrightAtmosTransport(vec3 light);
@@ -45,6 +47,6 @@ void main()
 
 	color.rgb = fullbrightScaleSoftClip(color.rgb);
 
-	gl_FragColor = color;
+	frag_color = color;
 }
 
diff --git a/indra/newview/app_settings/shaders/class1/deferred/fullbrightF.glsl b/indra/newview/app_settings/shaders/class1/deferred/fullbrightF.glsl
index 84ae2f9f10..36433a5827 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/fullbrightF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/fullbrightF.glsl
@@ -26,7 +26,9 @@
 #extension GL_ARB_texture_rectangle : enable
 
 #ifdef DEFINE_GL_FRAGCOLOR
-out vec4 gl_FragColor;
+out vec4 frag_color;
+#else
+#define frag_color gl_FragColor
 #endif
 
 VARYING vec4 vertex_color;
@@ -46,6 +48,6 @@ void main()
 
 	color.rgb = fullbrightScaleSoftClip(color.rgb);
 
-	gl_FragColor = color;
+	frag_color = color;
 }
 
diff --git a/indra/newview/app_settings/shaders/class1/deferred/fxaaF.glsl b/indra/newview/app_settings/shaders/class1/deferred/fxaaF.glsl
index 5af9406452..e02a7b405b 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/fxaaF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/fxaaF.glsl
@@ -26,7 +26,9 @@
 #extension GL_ARB_texture_rectangle : enable
 
 #ifdef DEFINE_GL_FRAGCOLOR
-out vec4 gl_FragColor;
+out vec4 frag_color;
+#else
+#define frag_color gl_FragColor
 #endif
 
 #define FXAA_PC 1
@@ -341,18 +343,23 @@ A. Or use FXAA_GREEN_AS_LUMA.
     // 1 = API supports gather4 on alpha channel.
     // 0 = API does not support gather4 on alpha channel.
     //
+	#if (FXAA_GLSL_130 == 0)
+		#define FXAA_GATHER4_ALPHA 0
+	#endif
     #if (FXAA_HLSL_5 == 1)
         #define FXAA_GATHER4_ALPHA 1
     #endif
-    #ifdef GL_ARB_gpu_shader5
-        #define FXAA_GATHER4_ALPHA 1
-    #endif
-    #ifdef GL_NV_gpu_shader5
-        #define FXAA_GATHER4_ALPHA 1
-    #endif
     #ifndef FXAA_GATHER4_ALPHA
-        #define FXAA_GATHER4_ALPHA 0
-    #endif
+		#ifdef GL_ARB_gpu_shader5
+			#define FXAA_GATHER4_ALPHA 1
+		#endif
+	    #ifdef GL_NV_gpu_shader5
+		    #define FXAA_GATHER4_ALPHA 1
+		#endif
+		#ifndef FXAA_GATHER4_ALPHA
+			#define FXAA_GATHER4_ALPHA 0
+		#endif
+	#endif
 #endif
 
 /*============================================================================
@@ -2113,6 +2120,6 @@ void main()
 
 	//diff = texture2D(diffuseMap, vary_tc);
 	
-	gl_FragColor = diff;
+	frag_color = diff;
 	
 }
diff --git a/indra/newview/app_settings/shaders/class1/deferred/giF.glsl b/indra/newview/app_settings/shaders/class1/deferred/giF.glsl
index 29ca80ae92..da1b234240 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/giF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/giF.glsl
@@ -26,7 +26,9 @@
 #extension GL_ARB_texture_rectangle : enable
 
 #ifdef DEFINE_GL_FRAGCOLOR
-out vec4 gl_FragColor;
+out vec4 frag_color;
+#else
+#define frag_color gl_FragColor
 #endif
 
 uniform sampler2DRect depthMap;
@@ -184,5 +186,5 @@ void main()
 	vec3 norm = texture2DRect(normalMap, pos_screen).xyz;
 	norm = vec3((norm.xy-0.5)*2.0,norm.z); // unpack norm
 	
-	gl_FragColor.xyz = giAmbient(pos, norm);
+	frag_color.xyz = giAmbient(pos, norm);
 }
diff --git a/indra/newview/app_settings/shaders/class1/deferred/impostorF.glsl b/indra/newview/app_settings/shaders/class1/deferred/impostorF.glsl
index a44173a2a4..bc0719cb82 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/impostorF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/impostorF.glsl
@@ -24,7 +24,9 @@
  */
 
 #ifdef DEFINE_GL_FRAGCOLOR
-out vec4 gl_FragData[3];
+out vec4 frag_data[3];
+#else
+#define frag_data gl_FragData
 #endif
 
 uniform float minimum_alpha;
@@ -45,7 +47,7 @@ void main()
 		discard;
 	}
 
-	gl_FragData[0] = vec4(col.rgb, col.a * 0.005);
-	gl_FragData[1] = texture2D(specularMap, vary_texcoord0.xy);
-	gl_FragData[2] = vec4(texture2D(normalMap, vary_texcoord0.xy).xyz, 0.0);
+	frag_data[0] = vec4(col.rgb, col.a * 0.005);
+	frag_data[1] = texture2D(specularMap, vary_texcoord0.xy);
+	frag_data[2] = vec4(texture2D(normalMap, vary_texcoord0.xy).xyz, 0.0);
 }
diff --git a/indra/newview/app_settings/shaders/class1/deferred/luminanceF.glsl b/indra/newview/app_settings/shaders/class1/deferred/luminanceF.glsl
index e014a14ad8..dcf474824d 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/luminanceF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/luminanceF.glsl
@@ -26,12 +26,14 @@
 uniform sampler2DRect diffuseMap;
 
 #ifdef DEFINE_GL_FRAGCOLOR
-out vec4 gl_FragColor;
+out vec4 frag_color;
+#else
+#define frag_color gl_FragColor
 #endif
 
 VARYING vec2 vary_fragcoord;
 
 void main() 
 {
-	gl_FragColor = texture2DRect(diffuseMap, vary_fragcoord.xy);
+	frag_color = texture2DRect(diffuseMap, vary_fragcoord.xy);
 }
diff --git a/indra/newview/app_settings/shaders/class1/deferred/multiPointLightF.glsl b/indra/newview/app_settings/shaders/class1/deferred/multiPointLightF.glsl
index 179c721a2f..53a2a13392 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/multiPointLightF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/multiPointLightF.glsl
@@ -26,7 +26,9 @@
 #extension GL_ARB_texture_rectangle : enable
 
 #ifdef DEFINE_GL_FRAGCOLOR
-out vec4 gl_FragColor;
+out vec4 frag_color;
+#else
+#define frag_color gl_FragColor
 #endif
 
 uniform sampler2DRect depthMap;
@@ -141,6 +143,6 @@ void main()
 		discard;
 	}
 	
-	gl_FragColor.rgb = out_col;
-	gl_FragColor.a = 0.0;
+	frag_color.rgb = out_col;
+	frag_color.a = 0.0;
 }
diff --git a/indra/newview/app_settings/shaders/class1/deferred/multiSpotLightF.glsl b/indra/newview/app_settings/shaders/class1/deferred/multiSpotLightF.glsl
index 2196d14895..75de47614c 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/multiSpotLightF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/multiSpotLightF.glsl
@@ -24,7 +24,9 @@
  */
 
 #ifdef DEFINE_GL_FRAGCOLOR
-out vec4 gl_FragColor;
+out vec4 frag_color;
+#else
+#define frag_color gl_FragColor
 #endif
 
 //class 1 -- no shadows
@@ -242,6 +244,6 @@ void main()
 		}
 	}
 	
-	gl_FragColor.rgb = col;	
-	gl_FragColor.a = 0.0;
+	frag_color.rgb = col;	
+	frag_color.a = 0.0;
 }
diff --git a/indra/newview/app_settings/shaders/class1/deferred/normgenF.glsl b/indra/newview/app_settings/shaders/class1/deferred/normgenF.glsl
index 879942d8fa..62cfa5c316 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/normgenF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/normgenF.glsl
@@ -26,7 +26,9 @@
 #extension GL_ARB_texture_rectangle : enable
 
 #ifdef DEFINE_GL_FRAGCOLOR
-out vec4 gl_FragColor;
+out vec4 frag_color;
+#else
+#define frag_color gl_FragColor
 #endif
 
 uniform sampler2D alphaMap;
@@ -52,5 +54,5 @@ void main()
 	norm *= 0.5;
 	norm += 0.5;	
 	
-	gl_FragColor = vec4(norm, alpha);
+	frag_color = vec4(norm, alpha);
 }
diff --git a/indra/newview/app_settings/shaders/class1/deferred/pointLightF.glsl b/indra/newview/app_settings/shaders/class1/deferred/pointLightF.glsl
index b673d00d6e..a5e04fba57 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/pointLightF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/pointLightF.glsl
@@ -26,7 +26,9 @@
 #extension GL_ARB_texture_rectangle : enable
 
 #ifdef DEFINE_GL_FRAGCOLOR
-out vec4 gl_FragColor;
+out vec4 frag_color;
+#else
+#define frag_color gl_FragColor
 #endif
 
 uniform sampler2DRect diffuseRect;
@@ -118,6 +120,6 @@ void main()
 		discard;
 	}
 		
-	gl_FragColor.rgb = col;	
-	gl_FragColor.a = 0.0;
+	frag_color.rgb = col;	
+	frag_color.a = 0.0;
 }
diff --git a/indra/newview/app_settings/shaders/class1/deferred/postDeferredF.glsl b/indra/newview/app_settings/shaders/class1/deferred/postDeferredF.glsl
index 18d451bf87..bf362e21a4 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/postDeferredF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/postDeferredF.glsl
@@ -26,7 +26,9 @@
 #extension GL_ARB_texture_rectangle : enable
 
 #ifdef DEFINE_GL_FRAGCOLOR
-out vec4 gl_FragColor;
+out vec4 frag_color;
+#else
+#define frag_color gl_FragColor
 #endif
 
 uniform sampler2DRect diffuseRect;
@@ -122,5 +124,5 @@ void main()
 		diff /= w;
 	}
 		
-	gl_FragColor = diff;
+	frag_color = diff;
 }
diff --git a/indra/newview/app_settings/shaders/class1/deferred/postDeferredNoDoFF.glsl b/indra/newview/app_settings/shaders/class1/deferred/postDeferredNoDoFF.glsl
index c275434777..eb5beeef39 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/postDeferredNoDoFF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/postDeferredNoDoFF.glsl
@@ -26,7 +26,9 @@
 #extension GL_ARB_texture_rectangle : enable
 
 #ifdef DEFINE_GL_FRAGCOLOR
-out vec4 gl_FragColor;
+out vec4 frag_color;
+#else
+#define frag_color gl_FragColor
 #endif
 
 uniform sampler2DRect diffuseRect;
@@ -40,6 +42,6 @@ void main()
 	vec4 diff = texture2DRect(diffuseRect, vary_fragcoord.xy);
 	
 	vec4 bloom = texture2D(bloomMap, vary_fragcoord.xy/screen_res);
-	gl_FragColor = diff + bloom;
+	frag_color = diff + bloom;
 }
 
diff --git a/indra/newview/app_settings/shaders/class1/deferred/postgiV.glsl b/indra/newview/app_settings/shaders/class1/deferred/postDeferredNoTCV.glsl
index 0d5c8e7287..bd0cb50464 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/postgiV.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/postDeferredNoTCV.glsl
@@ -1,5 +1,5 @@
 /** 
- * @file postgiV.glsl
+ * @file postDeferredV.glsl
  *
  * $LicenseInfo:firstyear=2007&license=viewerlgpl$
  * Second Life Viewer Source Code
@@ -24,17 +24,17 @@
  */
 
 uniform mat4 modelview_projection_matrix;
- 
-ATTRIBUTE vec3 position;
 
+ATTRIBUTE vec3 position;
 
 VARYING vec2 vary_fragcoord;
+
 uniform vec2 screen_res;
 
 void main()
 {
 	//transform vertex
 	vec4 pos = modelview_projection_matrix * vec4(position.xyz, 1.0);
-	gl_Position = pos; 	
+	gl_Position = pos;	
 	vary_fragcoord = (pos.xy*0.5+0.5)*screen_res;
 }
diff --git a/indra/newview/app_settings/shaders/class1/deferred/postgiF.glsl b/indra/newview/app_settings/shaders/class1/deferred/postgiF.glsl
index 84d65d5b3b..96f9628424 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/postgiF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/postgiF.glsl
@@ -24,8 +24,10 @@
  */
 
  #ifdef DEFINE_GL_FRAGCOLOR
- out vec4 gl_FragColor;
- #endif
+out vec4 frag_color;
+#else
+#define frag_color gl_FragColor
+#endif
  
 uniform sampler2DRect depthMap;
 uniform sampler2DRect normalMap;
@@ -96,5 +98,5 @@ void main()
 	
 	col = col*col*blur_quad.x + col*blur_quad.y + blur_quad.z;
 	
-	gl_FragColor.rgb = col;
+	frag_color.rgb = col;
 }
diff --git a/indra/newview/app_settings/shaders/class1/deferred/shadowAlphaMaskF.glsl b/indra/newview/app_settings/shaders/class1/deferred/shadowAlphaMaskF.glsl
index c1fb7b55d4..cf8cf8364a 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/shadowAlphaMaskF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/shadowAlphaMaskF.glsl
@@ -24,7 +24,9 @@
  */
 
 #ifdef DEFINE_GL_FRAGCOLOR
-out vec4 gl_FragColor;
+out vec4 frag_color;
+#else
+#define frag_color gl_FragColor
 #endif
 
 uniform float minimum_alpha;
@@ -44,7 +46,7 @@ void main()
 		discard;
 	}
 
-	gl_FragColor = vec4(1,1,1,1);
+	frag_color = vec4(1,1,1,1);
 	
 	gl_FragDepth = max(post_pos.z/post_pos.w*0.5+0.5, 0.0);
 }
diff --git a/indra/newview/app_settings/shaders/class1/deferred/shadowF.glsl b/indra/newview/app_settings/shaders/class1/deferred/shadowF.glsl
index bf75ca262e..7e55fdc12a 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/shadowF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/shadowF.glsl
@@ -24,14 +24,16 @@
  */
  
 #ifdef DEFINE_GL_FRAGCOLOR
-out vec4 gl_FragColor;
+out vec4 frag_color;
+#else
+#define frag_color gl_FragColor
 #endif
 
 VARYING vec4 post_pos;
 
 void main() 
 {
-	gl_FragColor = vec4(1,1,1,1);
+	frag_color = vec4(1,1,1,1);
 	
 	gl_FragDepth = max(post_pos.z/post_pos.w*0.5+0.5, 0.0);
 }
diff --git a/indra/newview/app_settings/shaders/class1/deferred/skyF.glsl b/indra/newview/app_settings/shaders/class1/deferred/skyF.glsl
index 96ad0aa93a..faa54a316e 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/skyF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/skyF.glsl
@@ -24,7 +24,9 @@
  */
  
 #ifdef DEFINE_GL_FRAGCOLOR
-out vec4 gl_FragData[3];
+out vec4 frag_data[3];
+#else
+#define frag_data gl_FragData
 #endif
 
 /////////////////////////////////////////////////////////////////////////
@@ -57,8 +59,8 @@ void main()
 	color *= 2.;
 
 	/// Gamma correct for WL (soft clip effect).
-	gl_FragData[0] = vec4(scaleSoftClip(color.rgb), 1.0);
-	gl_FragData[1] = vec4(0.0,0.0,0.0,0.0);
-	gl_FragData[2] = vec4(0,0,1,0);
+	frag_data[0] = vec4(scaleSoftClip(color.rgb), 1.0);
+	frag_data[1] = vec4(0.0,0.0,0.0,0.0);
+	frag_data[2] = vec4(0,0,1,0);
 }
 
diff --git a/indra/newview/app_settings/shaders/class1/deferred/skyV.glsl b/indra/newview/app_settings/shaders/class1/deferred/skyV.glsl
index 721de18e0b..7c02d31d43 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/skyV.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/skyV.glsl
@@ -26,7 +26,6 @@
 uniform mat4 modelview_projection_matrix;
 
 ATTRIBUTE vec3 position;
-ATTRIBUTE vec2 texcoord0;
 
 // SKY ////////////////////////////////////////////////////////////////////////
 // The vertex shader for creating the atmospheric sky
@@ -34,7 +33,6 @@ ATTRIBUTE vec2 texcoord0;
 
 // Output parameters
 VARYING vec4 vary_HazeColor;
-VARYING vec2 vary_texcoord0;
 
 // Inputs
 uniform vec3 camPosLocal;
@@ -44,26 +42,23 @@ uniform vec4 sunlight_color;
 uniform vec4 ambient;
 uniform vec4 blue_horizon;
 uniform vec4 blue_density;
-uniform vec4 haze_horizon;
-uniform vec4 haze_density;
+uniform float haze_horizon;
+uniform float haze_density;
 
-uniform vec4 cloud_shadow;
-uniform vec4 density_multiplier;
-uniform vec4 max_y;
+uniform float cloud_shadow;
+uniform float density_multiplier;
+uniform float max_y;
 
 uniform vec4 glow;
 
 uniform vec4 cloud_color;
 
-uniform vec4 cloud_scale;
-
 void main()
 {
 
 	// World / view / projection
 	gl_Position = modelview_projection_matrix * vec4(position.xyz, 1.0);
-	vary_texcoord0 = texcoord0;
-
+	
 	// Get relative position
 	vec3 P = position.xyz - camPosLocal.xyz + vec3(0,50,0);
 	//vec3 P = position.xyz + vec3(0,50,0);
@@ -71,7 +66,7 @@ void main()
 	// Set altitude
 	if (P.y > 0.)
 	{
-		P *= (max_y.x / P.y);
+		P *= (max_y / P.y);
 	}
 	else
 	{
@@ -93,12 +88,12 @@ void main()
 
 	// Sunlight attenuation effect (hue and brightness) due to atmosphere
 	// this is used later for sunlight modulation at various altitudes
-	light_atten = (blue_density * 1.0 + haze_density.x * 0.25) * (density_multiplier.x * max_y.x);
+	light_atten = (blue_density + vec4(haze_density * 0.25)) * (density_multiplier * max_y);
 
 	// Calculate relative weights
-	temp1 = blue_density + haze_density.x;
+	temp1 = blue_density + haze_density;
 	blue_weight = blue_density / temp1;
-	haze_weight = haze_density.x / temp1;
+	haze_weight = haze_density / temp1;
 
 	// Compute sunlight from P & lightnorm (for long rays like sky)
 	temp2.y = max(0., max(0., Pn.y) * 1.0 + lightnorm.y );
@@ -106,7 +101,7 @@ void main()
 	sunlight *= exp( - light_atten * temp2.y);
 
 	// Distance
-	temp2.z = Plen * density_multiplier.x;
+	temp2.z = Plen * density_multiplier;
 
 	// Transparency (-> temp1)
 	// ATI Bugfix -- can't store temp1*temp2.z in a variable because the ati
@@ -131,20 +126,20 @@ void main()
 
 	// Haze color above cloud
 	vary_HazeColor = (	  blue_horizon * blue_weight * (sunlight + ambient)
-				+ (haze_horizon.r * haze_weight) * (sunlight * temp2.x + ambient)
+				+ (haze_horizon * haze_weight) * (sunlight * temp2.x + ambient)
 			 );	
 
 
 	// Increase ambient when there are more clouds
 	vec4 tmpAmbient = ambient;
-	tmpAmbient += (1. - tmpAmbient) * cloud_shadow.x * 0.5; 
+	tmpAmbient += (1. - tmpAmbient) * cloud_shadow * 0.5; 
 
 	// Dim sunlight by cloud shadow percentage
-	sunlight *= (1. - cloud_shadow.x);
+	sunlight *= (1. - cloud_shadow);
 
 	// Haze color below cloud
 	vec4 additiveColorBelowCloud = (	  blue_horizon * blue_weight * (sunlight + tmpAmbient)
-				+ (haze_horizon.r * haze_weight) * (sunlight * temp2.x + tmpAmbient)
+				+ (haze_horizon * haze_weight) * (sunlight * temp2.x + tmpAmbient)
 			 );	
 
 	// Final atmosphere additive
diff --git a/indra/newview/app_settings/shaders/class1/deferred/softenLightF.glsl b/indra/newview/app_settings/shaders/class1/deferred/softenLightF.glsl
index 51110ae4df..b5501c2820 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/softenLightF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/softenLightF.glsl
@@ -26,7 +26,9 @@
 #extension GL_ARB_texture_rectangle : enable
 
 #ifdef DEFINE_GL_FRAGCOLOR
-out vec4 gl_FragColor;
+out vec4 frag_color;
+#else
+#define frag_color gl_FragColor
 #endif
 
 uniform sampler2DRect diffuseRect;
@@ -51,12 +53,12 @@ uniform vec4 sunlight_color;
 uniform vec4 ambient;
 uniform vec4 blue_horizon;
 uniform vec4 blue_density;
-uniform vec4 haze_horizon;
-uniform vec4 haze_density;
-uniform vec4 cloud_shadow;
-uniform vec4 density_multiplier;
-uniform vec4 distance_multiplier;
-uniform vec4 max_y;
+uniform float haze_horizon;
+uniform float haze_density;
+uniform float cloud_shadow;
+uniform float density_multiplier;
+uniform float distance_multiplier;
+uniform float max_y;
 uniform vec4 glow;
 uniform float scene_light_strength;
 uniform mat3 env_mat;
@@ -159,13 +161,13 @@ void calcAtmospherics(vec3 inPositionEye, float ambFactor) {
 
 	//sunlight attenuation effect (hue and brightness) due to atmosphere
 	//this is used later for sunlight modulation at various altitudes
-	light_atten = (blue_density * 1.0 + vec4(haze_density.r) * 0.25) * (density_multiplier.x * max_y.x);
+	light_atten = (blue_density + vec4(haze_density * 0.25)) * (density_multiplier * max_y);
 		//I had thought blue_density and haze_density should have equal weighting,
 		//but attenuation due to haze_density tends to seem too strong
 
-	temp1 = blue_density + vec4(haze_density.r);
+	temp1 = blue_density + vec4(haze_density);
 	blue_weight = blue_density / temp1;
-	haze_weight = vec4(haze_density.r) / temp1;
+	haze_weight = vec4(haze_density) / temp1;
 
 	//(TERRAIN) compute sunlight from lightnorm only (for short rays like terrain)
 	temp2.y = max(0.0, tmpLightnorm.y);
@@ -173,12 +175,12 @@ void calcAtmospherics(vec3 inPositionEye, float ambFactor) {
 	sunlight *= exp( - light_atten * temp2.y);
 
 	// main atmospheric scattering line integral
-	temp2.z = Plen * density_multiplier.x;
+	temp2.z = Plen * density_multiplier;
 
 	// Transparency (-> temp1)
-	// ATI Bugfix -- can't store temp1*temp2.z*distance_multiplier.x in a variable because the ati
+	// ATI Bugfix -- can't store temp1*temp2.z*distance_multiplier in a variable because the ati
 	// compiler gets confused.
-	temp1 = exp(-temp1 * temp2.z * distance_multiplier.x);
+	temp1 = exp(-temp1 * temp2.z * distance_multiplier);
 
 	//final atmosphere attenuation factor
 	setAtmosAttenuation(temp1.rgb);
@@ -199,7 +201,7 @@ void calcAtmospherics(vec3 inPositionEye, float ambFactor) {
 	temp2.x += .25;
 	
 	//increase ambient when there are more clouds
-	vec4 tmpAmbient = ambient + (vec4(1.) - ambient) * cloud_shadow.x * 0.5;
+	vec4 tmpAmbient = ambient + (vec4(1.) - ambient) * cloud_shadow * 0.5;
 	
 	/*  decrease value and saturation (that in HSV, not HSL) for occluded areas
 	 * // for HSV color/geometry used here, see http://gimp-savvy.com/BOOK/index.html?node52.html
@@ -213,8 +215,8 @@ void calcAtmospherics(vec3 inPositionEye, float ambFactor) {
 
 	//haze color
 	setAdditiveColor(
-		vec3(blue_horizon * blue_weight * (sunlight*(1.-cloud_shadow.x) + tmpAmbient)
-	  + (haze_horizon.r * haze_weight) * (sunlight*(1.-cloud_shadow.x) * temp2.x
+		vec3(blue_horizon * blue_weight * (sunlight*(1.-cloud_shadow) + tmpAmbient)
+	  + (haze_horizon * haze_weight) * (sunlight*(1.-cloud_shadow) * temp2.x
 		  + tmpAmbient)));
 
 	//brightness of surface both sunlight and ambient
@@ -322,7 +324,7 @@ void main()
 		col = diffuse.rgb;
 	}
 
-	gl_FragColor.rgb = col;
+	frag_color.rgb = col;
 
-	gl_FragColor.a = bloom;
+	frag_color.a = bloom;
 }
diff --git a/indra/newview/app_settings/shaders/class1/deferred/spotLightF.glsl b/indra/newview/app_settings/shaders/class1/deferred/spotLightF.glsl
index cc0f4e5b6b..7ed8ed3370 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/spotLightF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/spotLightF.glsl
@@ -27,7 +27,9 @@
 #extension GL_ARB_texture_rectangle : enable
 
 #ifdef DEFINE_GL_FRAGCOLOR
-out vec4 gl_FragColor;
+out vec4 frag_color;
+#else
+#define frag_color gl_FragColor
 #endif
 
 uniform sampler2DRect diffuseRect;
@@ -184,6 +186,6 @@ void main()
 		}
 	}
 	
-	gl_FragColor.rgb = col;	
-	gl_FragColor.a = 0.0;
+	frag_color.rgb = col;	
+	frag_color.a = 0.0;
 }
diff --git a/indra/newview/app_settings/shaders/class1/deferred/starsF.glsl b/indra/newview/app_settings/shaders/class1/deferred/starsF.glsl
index 03fccd2766..821058804c 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/starsF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/starsF.glsl
@@ -24,7 +24,9 @@
  */
 
 #ifdef DEFINE_GL_FRAGCOLOR
-out vec4 gl_FragData[3];
+out vec4 frag_data[3];
+#else
+#define frag_data gl_FragData
 #endif
 
 VARYING vec4 vertex_color;
@@ -36,7 +38,7 @@ void main()
 {
 	vec4 col = vertex_color * texture2D(diffuseMap, vary_texcoord0.xy);
 	
-	gl_FragData[0] = col;
-	gl_FragData[1] = vec4(0,0,0,0);
-	gl_FragData[2] = vec4(0,0,1,0);	
+	frag_data[0] = col;
+	frag_data[1] = vec4(0,0,0,0);
+	frag_data[2] = vec4(0,0,1,0);	
 }
diff --git a/indra/newview/app_settings/shaders/class1/deferred/sunLightF.glsl b/indra/newview/app_settings/shaders/class1/deferred/sunLightF.glsl
index adc7c5d005..5ca817aff6 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/sunLightF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/sunLightF.glsl
@@ -28,10 +28,12 @@
 #extension GL_ARB_texture_rectangle : enable
 
 #ifdef DEFINE_GL_FRAGCOLOR
-out vec4 gl_FragColor;
+out vec4 frag_color;
+#else
+#define frag_color gl_FragColor
 #endif
 
 void main() 
 {
-	gl_FragColor = vec4(0,0,0,0);
+	frag_color = vec4(0,0,0,0);
 }
diff --git a/indra/newview/app_settings/shaders/class1/deferred/giV.glsl b/indra/newview/app_settings/shaders/class1/deferred/sunLightNoFragCoordV.glsl
index e5d3bb8ea6..47e9d15fbc 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/giV.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/sunLightNoFragCoordV.glsl
@@ -1,5 +1,5 @@
 /** 
- * @file giV.glsl
+ * @file sunLightF.glsl
  *
  * $LicenseInfo:firstyear=2007&license=viewerlgpl$
  * Second Life Viewer Source Code
@@ -24,13 +24,8 @@
  */
 
 uniform mat4 modelview_projection_matrix;
-
+ 
 ATTRIBUTE vec3 position;
-ATTRIBUTE vec4 diffuse_color;
-ATTRIBUTE vec2 texcoord0;
-
-VARYING vec4 vertex_color;
-VARYING vec2 vary_fragcoord;
 
 uniform vec2 screen_res;
 
@@ -39,10 +34,4 @@ void main()
 	//transform vertex
 	vec4 pos = modelview_projection_matrix * vec4(position.xyz, 1.0);
 	gl_Position = pos; 
-	
-	vary_fragcoord = (pos.xy * 0.5 + 0.5)*screen_res;	
-	vec4 tex = vec4(texcoord0,0,1);
-	tex.w = 1.0;
-
-	vertex_color = diffuse_color;
 }
diff --git a/indra/newview/app_settings/shaders/class1/deferred/sunLightSSAOF.glsl b/indra/newview/app_settings/shaders/class1/deferred/sunLightSSAOF.glsl
index fc5959a33c..2422d73a3e 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/sunLightSSAOF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/sunLightSSAOF.glsl
@@ -26,7 +26,9 @@
 #extension GL_ARB_texture_rectangle : enable
 
 #ifdef DEFINE_GL_FRAGCOLOR
-out vec4 gl_FragColor;
+out vec4 frag_color;
+#else
+#define frag_color gl_FragColor
 #endif
 
 //class 1 -- no shadow, SSAO only
@@ -37,8 +39,6 @@ uniform sampler2D noiseMap;
 
 
 // Inputs
-uniform mat4 shadow_matrix[6];
-uniform vec4 shadow_clip;
 uniform float ssao_radius;
 uniform float ssao_max_radius;
 uniform float ssao_factor;
@@ -49,9 +49,6 @@ VARYING vec2 vary_fragcoord;
 uniform mat4 inv_proj;
 uniform vec2 screen_res;
 
-uniform float shadow_bias;
-uniform float shadow_offset;
-
 vec4 getPosition(vec2 pos_screen)
 {
 	float depth = texture2DRect(depthMap, pos_screen.xy).r;
@@ -128,8 +125,8 @@ void main()
 	vec3 norm = texture2DRect(normalMap, pos_screen).xyz;
 	norm = vec3((norm.xy-0.5)*2.0,norm.z); // unpack norm
 		
-	gl_FragColor[0] = 1.0;
-	gl_FragColor[1] = calcAmbientOcclusion(pos, norm);
-	gl_FragColor[2] = 1.0; 
-	gl_FragColor[3] = 1.0;
+	frag_color[0] = 1.0;
+	frag_color[1] = calcAmbientOcclusion(pos, norm);
+	frag_color[2] = 1.0; 
+	frag_color[3] = 1.0;
 }
diff --git a/indra/newview/app_settings/shaders/class1/deferred/terrainF.glsl b/indra/newview/app_settings/shaders/class1/deferred/terrainF.glsl
index 5522e6c41d..8a5e482e80 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/terrainF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/terrainF.glsl
@@ -24,7 +24,9 @@
  */
  
 #ifdef DEFINE_GL_FRAGCOLOR
-out vec4 gl_FragData[3];
+out vec4 frag_data[3];
+#else
+#define frag_data gl_FragData
 #endif
 
 uniform sampler2D detail_0;
@@ -51,9 +53,9 @@ void main()
 	float alphaFinal = texture2D(alpha_ramp, vary_texcoord1.zw).a;
 	vec4 outColor = mix( mix(color3, color2, alpha2), mix(color1, color0, alpha1), alphaFinal );
 	
-	gl_FragData[0] = vec4(outColor.rgb, 0.0);
-	gl_FragData[1] = vec4(0,0,0,0);
+	frag_data[0] = vec4(outColor.rgb, 0.0);
+	frag_data[1] = vec4(0,0,0,0);
 	vec3 nvn = normalize(vary_normal);
-	gl_FragData[2] = vec4(nvn.xy * 0.5 + 0.5, nvn.z, 0.0);
+	frag_data[2] = vec4(nvn.xy * 0.5 + 0.5, nvn.z, 0.0);
 }
 
diff --git a/indra/newview/app_settings/shaders/class1/deferred/treeF.glsl b/indra/newview/app_settings/shaders/class1/deferred/treeF.glsl
index ea98d6884c..6cf6106b51 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/treeF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/treeF.glsl
@@ -24,7 +24,9 @@
  */
 
 #ifdef DEFINE_GL_FRAGCOLOR
-out vec4 gl_FragData[3];
+out vec4 frag_data[3];
+#else
+#define frag_data gl_FragData
 #endif
 
 uniform sampler2D diffuseMap;
@@ -43,8 +45,8 @@ void main()
 		discard;
 	}
 
-	gl_FragData[0] = vec4(vertex_color.rgb*col.rgb, 0.0);
-	gl_FragData[1] = vec4(0,0,0,0);
+	frag_data[0] = vec4(vertex_color.rgb*col.rgb, 0.0);
+	frag_data[1] = vec4(0,0,0,0);
 	vec3 nvn = normalize(vary_normal);
-	gl_FragData[2] = vec4(nvn.xy * 0.5 + 0.5, nvn.z, 0.0);
+	frag_data[2] = vec4(nvn.xy * 0.5 + 0.5, nvn.z, 0.0);
 }
diff --git a/indra/newview/app_settings/shaders/class1/deferred/treeShadowF.glsl b/indra/newview/app_settings/shaders/class1/deferred/treeShadowF.glsl
index 20d0170535..d4d2f5f571 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/treeShadowF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/treeShadowF.glsl
@@ -24,7 +24,9 @@
  */
 
 #ifdef DEFINE_GL_FRAGCOLOR
-out vec4 gl_FragColor;
+out vec4 frag_color;
+#else
+#define frag_color gl_FragColor
 #endif
 
 uniform float minimum_alpha;
@@ -43,7 +45,7 @@ void main()
 		discard;
 	}
 
-	gl_FragColor = vec4(1,1,1,1);
+	frag_color = vec4(1,1,1,1);
 	
 	gl_FragDepth = max(post_pos.z/post_pos.w*0.5+0.5, 0.0);
 }
diff --git a/indra/newview/app_settings/shaders/class1/deferred/waterF.glsl b/indra/newview/app_settings/shaders/class1/deferred/waterF.glsl
index 4c9ea24a24..42dc7c0980 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/waterF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/waterF.glsl
@@ -26,7 +26,9 @@
 #extension GL_ARB_texture_rectangle : enable
 
 #ifdef DEFINE_GL_FRAGCOLOR
-out vec4 gl_FragData[3];
+out vec4 frag_data[3];
+#else
+#define frag_data gl_FragData
 #endif
 
 vec3 scaleSoftClip(vec3 inColor);
@@ -157,7 +159,7 @@ void main()
 	//wavef = normalize(wavef);
 	vec3 screenspacewavef = (norm_mat*vec4(wavef, 1.0)).xyz;
 	
-	gl_FragData[0] = vec4(color.rgb, 0.5); // diffuse
-	gl_FragData[1] = vec4(0.5,0.5,0.5, 0.95); // speccolor*spec, spec
-	gl_FragData[2] = vec4(screenspacewavef.xy*0.5+0.5, screenspacewavef.z, screenspacewavef.z*0.5); // normalxyz, displace
+	frag_data[0] = vec4(color.rgb, 0.5); // diffuse
+	frag_data[1] = vec4(0.5,0.5,0.5, 0.95); // speccolor*spec, spec
+	frag_data[2] = vec4(screenspacewavef.xy*0.5+0.5, screenspacewavef.z, screenspacewavef.z*0.5); // normalxyz, displace
 }
diff --git a/indra/newview/app_settings/shaders/class1/effects/glowExtractF.glsl b/indra/newview/app_settings/shaders/class1/effects/glowExtractF.glsl
index 9a3d792224..0f5eb288fd 100644
--- a/indra/newview/app_settings/shaders/class1/effects/glowExtractF.glsl
+++ b/indra/newview/app_settings/shaders/class1/effects/glowExtractF.glsl
@@ -26,7 +26,9 @@
 #extension GL_ARB_texture_rectangle : enable
 
 #ifdef DEFINE_GL_FRAGCOLOR
-out vec4 gl_FragColor;
+out vec4 frag_color;
+#else
+#define frag_color gl_FragColor
 #endif
 
 uniform sampler2DRect diffuseMap;
@@ -46,7 +48,7 @@ void main()
 	float lum = smoothstep(minLuminance, minLuminance+1.0, dot(col.rgb, lumWeights ) );
 	float warmth = smoothstep(minLuminance, minLuminance+1.0, max(col.r * warmthWeights.r, max(col.g * warmthWeights.g, col.b * warmthWeights.b)) ); 
 	
-	gl_FragColor.rgb = col.rgb; 
-	gl_FragColor.a = max(col.a, mix(lum, warmth, warmthAmount) * maxExtractAlpha);
+	frag_color.rgb = col.rgb; 
+	frag_color.a = max(col.a, mix(lum, warmth, warmthAmount) * maxExtractAlpha);
 	
 }
diff --git a/indra/newview/app_settings/shaders/class1/effects/glowF.glsl b/indra/newview/app_settings/shaders/class1/effects/glowF.glsl
index 90bb84323c..c1f6af9f57 100644
--- a/indra/newview/app_settings/shaders/class1/effects/glowF.glsl
+++ b/indra/newview/app_settings/shaders/class1/effects/glowF.glsl
@@ -24,7 +24,9 @@
  */
  
 #ifdef DEFINE_GL_FRAGCOLOR
-out vec4 gl_FragColor;
+out vec4 frag_color;
+#else
+#define frag_color gl_FragColor
 #endif
 
 uniform sampler2D diffuseMap;
@@ -54,5 +56,5 @@ void main()
 	col += kern[6] * texture2D(diffuseMap, vary_texcoord2.zw);	
 	col += kern[7] * texture2D(diffuseMap, vary_texcoord3.zw);	
 	
-	gl_FragColor = vec4(col.rgb * glowStrength, col.a);
+	frag_color = vec4(col.rgb * glowStrength, col.a);
 }
diff --git a/indra/newview/app_settings/shaders/class1/environment/terrainF.glsl b/indra/newview/app_settings/shaders/class1/environment/terrainF.glsl
index 18f6d91804..668a710c04 100644
--- a/indra/newview/app_settings/shaders/class1/environment/terrainF.glsl
+++ b/indra/newview/app_settings/shaders/class1/environment/terrainF.glsl
@@ -24,7 +24,9 @@
  */
  
 #ifdef DEFINE_GL_FRAGCOLOR
-out vec4 gl_FragColor;
+out vec4 frag_color;
+#else
+#define frag_color gl_FragColor
 #endif
 
 VARYING vec4 vertex_color;
@@ -59,6 +61,6 @@ void main()
 	/// Add WL Components
 	outColor.rgb = atmosLighting(outColor.rgb * vertex_color.rgb);
 	
-	gl_FragColor = vec4(scaleSoftClip(outColor.rgb), 1.0);
+	frag_color = vec4(scaleSoftClip(outColor.rgb), 1.0);
 }
 
diff --git a/indra/newview/app_settings/shaders/class1/environment/terrainWaterF.glsl b/indra/newview/app_settings/shaders/class1/environment/terrainWaterF.glsl
index e5c7ced52c..a956562396 100644
--- a/indra/newview/app_settings/shaders/class1/environment/terrainWaterF.glsl
+++ b/indra/newview/app_settings/shaders/class1/environment/terrainWaterF.glsl
@@ -24,7 +24,9 @@
  */
 
 #ifdef DEFINE_GL_FRAGCOLOR
-out vec4 gl_FragColor;
+out vec4 frag_color;
+#else
+#define frag_color gl_FragColor
 #endif
 
 VARYING vec4 vertex_color;
@@ -60,6 +62,6 @@ void main()
 	outColor.rgb = atmosLighting(outColor.rgb * vertex_color.rgb);
 	
 	outColor = applyWaterFog(outColor);
-	gl_FragColor = outColor;
+	frag_color = outColor;
 }
 
diff --git a/indra/newview/app_settings/shaders/class1/environment/underWaterF.glsl b/indra/newview/app_settings/shaders/class1/environment/underWaterF.glsl
index 1fdb90f792..0d8dab0a41 100644
--- a/indra/newview/app_settings/shaders/class1/environment/underWaterF.glsl
+++ b/indra/newview/app_settings/shaders/class1/environment/underWaterF.glsl
@@ -24,7 +24,9 @@
  */
  
 #ifdef DEFINE_GL_FRAGCOLOR
-out vec4 gl_FragColor;
+out vec4 frag_color;
+#else
+#define frag_color gl_FragColor
 #endif
 
 uniform sampler2D diffuseMap;
@@ -106,5 +108,5 @@ void main()
 		
 	vec4 fb = texture2D(screenTex, distort);
 	
-	gl_FragColor = applyWaterFog(fb,view.xyz);
+	frag_color = applyWaterFog(fb,view.xyz);
 }
diff --git a/indra/newview/app_settings/shaders/class1/environment/waterF.glsl b/indra/newview/app_settings/shaders/class1/environment/waterF.glsl
index 444c896d38..79bffab745 100644
--- a/indra/newview/app_settings/shaders/class1/environment/waterF.glsl
+++ b/indra/newview/app_settings/shaders/class1/environment/waterF.glsl
@@ -24,7 +24,9 @@
  */
  
 #ifdef DEFINE_GL_FRAGCOLOR
-out vec4 gl_FragColor;
+out vec4 frag_color;
+#else
+#define frag_color gl_FragColor
 #endif
 
 vec3 scaleSoftClip(vec3 inColor);
@@ -135,5 +137,5 @@ void main()
 	color.rgb = scaleSoftClip(color.rgb);
 	color.a = spec * sunAngle2;
 
-	gl_FragColor = color;
+	frag_color = color;
 }
diff --git a/indra/newview/app_settings/shaders/class1/interface/alphamaskF.glsl b/indra/newview/app_settings/shaders/class1/interface/alphamaskF.glsl
index d2f5e1987a..f520f301d9 100644
--- a/indra/newview/app_settings/shaders/class1/interface/alphamaskF.glsl
+++ b/indra/newview/app_settings/shaders/class1/interface/alphamaskF.glsl
@@ -24,7 +24,9 @@
  */
 
 #ifdef DEFINE_GL_FRAGCOLOR
-out vec4 gl_FragColor;
+out vec4 frag_color;
+#else
+#define frag_color gl_FragColor
 #endif
 
 uniform sampler2D diffuseMap;
@@ -42,5 +44,5 @@ void main()
 		discard;
 	}
 
-	gl_FragColor = col;
+	frag_color = col;
 }
diff --git a/indra/newview/app_settings/shaders/class1/interface/customalphaF.glsl b/indra/newview/app_settings/shaders/class1/interface/customalphaF.glsl
index 4b481ba834..a96d04cc39 100644
--- a/indra/newview/app_settings/shaders/class1/interface/customalphaF.glsl
+++ b/indra/newview/app_settings/shaders/class1/interface/customalphaF.glsl
@@ -24,7 +24,9 @@
  */
 
 #ifdef DEFINE_GL_FRAGCOLOR
-out vec4 gl_FragColor;
+out vec4 frag_color;
+#else
+#define frag_color gl_FragColor
 #endif
 
 uniform sampler2D diffuseMap;
@@ -38,5 +40,5 @@ void main()
 {
 	vec4 color = vertex_color*texture2D(diffuseMap, vary_texcoord0.xy);
 	color.a *= custom_alpha;
-	gl_FragColor = color;
+	frag_color = color;
 }
diff --git a/indra/newview/app_settings/shaders/class1/interface/debugF.glsl b/indra/newview/app_settings/shaders/class1/interface/debugF.glsl
index 6bcc97ba18..67c6baddbb 100644
--- a/indra/newview/app_settings/shaders/class1/interface/debugF.glsl
+++ b/indra/newview/app_settings/shaders/class1/interface/debugF.glsl
@@ -24,12 +24,14 @@
  */
 
 #ifdef DEFINE_GL_FRAGCOLOR
-out vec4 gl_FragColor;
+out vec4 frag_color;
+#else
+#define frag_color gl_FragColor
 #endif
 
 uniform vec4 color;
 
 void main() 
 {
-	gl_FragColor = color;
+	frag_color = color;
 }
diff --git a/indra/newview/app_settings/shaders/class1/interface/glowcombineF.glsl b/indra/newview/app_settings/shaders/class1/interface/glowcombineF.glsl
index f67703b839..ed803de277 100644
--- a/indra/newview/app_settings/shaders/class1/interface/glowcombineF.glsl
+++ b/indra/newview/app_settings/shaders/class1/interface/glowcombineF.glsl
@@ -24,7 +24,9 @@
  */
 
 #ifdef DEFINE_GL_FRAGCOLOR
-out vec4 gl_FragColor;
+out vec4 frag_color;
+#else
+#define frag_color gl_FragColor
 #endif
 
 #extension GL_ARB_texture_rectangle : enable
@@ -37,6 +39,6 @@ VARYING vec2 vary_texcoord1;
 
 void main() 
 {
-	gl_FragColor = texture2D(glowMap, vary_texcoord0.xy) +
+	frag_color = texture2D(glowMap, vary_texcoord0.xy) +
 					texture2DRect(screenMap, vary_texcoord1.xy);
 }
diff --git a/indra/newview/app_settings/shaders/class1/interface/glowcombineFXAAF.glsl b/indra/newview/app_settings/shaders/class1/interface/glowcombineFXAAF.glsl
index c66a6e5b48..59520bb99f 100644
--- a/indra/newview/app_settings/shaders/class1/interface/glowcombineFXAAF.glsl
+++ b/indra/newview/app_settings/shaders/class1/interface/glowcombineFXAAF.glsl
@@ -26,7 +26,9 @@
 #extension GL_ARB_texture_rectangle : enable
 
 #ifdef DEFINE_GL_FRAGCOLOR
-out vec4 gl_FragColor;
+out vec4 frag_color;
+#else
+#define frag_color gl_FragColor
 #endif
 
 uniform sampler2DRect diffuseRect;
@@ -38,5 +40,5 @@ void main()
 {
 	vec3 col = texture2DRect(diffuseRect, vary_tc*screen_res).rgb;
 	
-	gl_FragColor = vec4(col.rgb, dot(col.rgb, vec3(0.299, 0.587, 0.144)));
+	frag_color = vec4(col.rgb, dot(col.rgb, vec3(0.299, 0.587, 0.144)));
 }
diff --git a/indra/newview/app_settings/shaders/class1/interface/highlightF.glsl b/indra/newview/app_settings/shaders/class1/interface/highlightF.glsl
index ecbc30f05f..6cc9bbbea2 100644
--- a/indra/newview/app_settings/shaders/class1/interface/highlightF.glsl
+++ b/indra/newview/app_settings/shaders/class1/interface/highlightF.glsl
@@ -24,7 +24,9 @@
  */
  
 #ifdef DEFINE_GL_FRAGCOLOR
-out vec4 gl_FragColor;
+out vec4 frag_color;
+#else
+#define frag_color gl_FragColor
 #endif
 
 uniform vec4 color;
@@ -34,5 +36,5 @@ VARYING vec2 vary_texcoord0;
 
 void main() 
 {
-	gl_FragColor = color*texture2D(diffuseMap, vary_texcoord0.xy);
+	frag_color = color*texture2D(diffuseMap, vary_texcoord0.xy);
 }
diff --git a/indra/newview/app_settings/shaders/class1/interface/occlusionF.glsl b/indra/newview/app_settings/shaders/class1/interface/occlusionF.glsl
index 85f819f4c2..db130e456c 100644
--- a/indra/newview/app_settings/shaders/class1/interface/occlusionF.glsl
+++ b/indra/newview/app_settings/shaders/class1/interface/occlusionF.glsl
@@ -24,10 +24,12 @@
  */
  
 #ifdef DEFINE_GL_FRAGCOLOR
-out vec4 gl_FragColor;
+out vec4 frag_color;
+#else
+#define frag_color gl_FragColor
 #endif
 
 void main() 
 {
-	gl_FragColor = vec4(1,1,1,1);
+	frag_color = vec4(1,1,1,1);
 }
diff --git a/indra/newview/app_settings/shaders/class1/interface/onetexturenocolorF.glsl b/indra/newview/app_settings/shaders/class1/interface/onetexturenocolorF.glsl
index fafeb5a7b4..415181126b 100644
--- a/indra/newview/app_settings/shaders/class1/interface/onetexturenocolorF.glsl
+++ b/indra/newview/app_settings/shaders/class1/interface/onetexturenocolorF.glsl
@@ -24,7 +24,9 @@
  */
 
 #ifdef DEFINE_GL_FRAGCOLOR
-out vec4 gl_FragColor;
+out vec4 frag_color;
+#else
+#define frag_color gl_FragColor
 #endif
 
 uniform sampler2D tex0;
@@ -33,5 +35,5 @@ VARYING vec2 vary_texcoord0;
 
 void main() 
 {
-	gl_FragColor = texture2D(tex0, vary_texcoord0.xy);
+	frag_color = texture2D(tex0, vary_texcoord0.xy);
 }
diff --git a/indra/newview/app_settings/shaders/class1/interface/solidcolorF.glsl b/indra/newview/app_settings/shaders/class1/interface/solidcolorF.glsl
index f790122749..67dc500493 100644
--- a/indra/newview/app_settings/shaders/class1/interface/solidcolorF.glsl
+++ b/indra/newview/app_settings/shaders/class1/interface/solidcolorF.glsl
@@ -24,7 +24,9 @@
  */
 
 #ifdef DEFINE_GL_FRAGCOLOR
-out vec4 gl_FragColor;
+out vec4 frag_color;
+#else
+#define frag_color gl_FragColor
 #endif
 
 uniform sampler2D tex0;
@@ -36,5 +38,5 @@ void main()
 {
 	float alpha = texture2D(tex0, vary_texcoord0.xy).a * vertex_color.a;
 
-	gl_FragColor = vec4(vertex_color.rgb, alpha);
+	frag_color = vec4(vertex_color.rgb, alpha);
 }
diff --git a/indra/newview/app_settings/shaders/class1/interface/splattexturerectF.glsl b/indra/newview/app_settings/shaders/class1/interface/splattexturerectF.glsl
index a0bb255cfa..772bb374e8 100644
--- a/indra/newview/app_settings/shaders/class1/interface/splattexturerectF.glsl
+++ b/indra/newview/app_settings/shaders/class1/interface/splattexturerectF.glsl
@@ -26,7 +26,9 @@
 #extension GL_ARB_texture_rectangle : enable
 
 #ifdef DEFINE_GL_FRAGCOLOR
-out vec4 gl_FragColor;
+out vec4 frag_color;
+#else
+#define frag_color gl_FragColor
 #endif
 
 uniform sampler2DRect screenMap;
@@ -36,5 +38,5 @@ VARYING vec2 vary_texcoord0;
 
 void main() 
 {
-	gl_FragColor = 	texture2DRect(screenMap, vary_texcoord0.xy) * vertex_color;
+	frag_color = 	texture2DRect(screenMap, vary_texcoord0.xy) * vertex_color;
 }
diff --git a/indra/newview/app_settings/shaders/class1/interface/twotextureaddF.glsl b/indra/newview/app_settings/shaders/class1/interface/twotextureaddF.glsl
index cdb48163dd..95679e93e7 100644
--- a/indra/newview/app_settings/shaders/class1/interface/twotextureaddF.glsl
+++ b/indra/newview/app_settings/shaders/class1/interface/twotextureaddF.glsl
@@ -24,7 +24,9 @@
  */
 
 #ifdef DEFINE_GL_FRAGCOLOR
-out vec4 gl_FragColor;
+out vec4 frag_color;
+#else
+#define frag_color gl_FragColor
 #endif
 
 uniform sampler2D tex0;
@@ -35,5 +37,5 @@ VARYING vec2 vary_texcoord1;
 
 void main() 
 {
-	gl_FragColor = texture2D(tex0, vary_texcoord0.xy)+texture2D(tex1, vary_texcoord1.xy);
+	frag_color = texture2D(tex0, vary_texcoord0.xy)+texture2D(tex1, vary_texcoord1.xy);
 }
diff --git a/indra/newview/app_settings/shaders/class1/interface/uiF.glsl b/indra/newview/app_settings/shaders/class1/interface/uiF.glsl
index 36d6e06fc5..299bfb72aa 100644
--- a/indra/newview/app_settings/shaders/class1/interface/uiF.glsl
+++ b/indra/newview/app_settings/shaders/class1/interface/uiF.glsl
@@ -24,7 +24,9 @@
  */
 
 #ifdef DEFINE_GL_FRAGCOLOR
-out vec4 gl_FragColor;
+out vec4 frag_color;
+#else
+#define frag_color gl_FragColor
 #endif
 
 uniform sampler2D diffuseMap;
@@ -34,5 +36,5 @@ VARYING vec4 vertex_color;
 
 void main() 
 {
-	gl_FragColor = vertex_color*texture2D(diffuseMap, vary_texcoord0.xy);
+	frag_color = vertex_color*texture2D(diffuseMap, vary_texcoord0.xy);
 }
diff --git a/indra/newview/app_settings/shaders/class1/lighting/lightAlphaMaskF.glsl b/indra/newview/app_settings/shaders/class1/lighting/lightAlphaMaskF.glsl
index 10413bdeb0..cf29939cb2 100644
--- a/indra/newview/app_settings/shaders/class1/lighting/lightAlphaMaskF.glsl
+++ b/indra/newview/app_settings/shaders/class1/lighting/lightAlphaMaskF.glsl
@@ -24,7 +24,9 @@
  */
  
 #ifdef DEFINE_GL_FRAGCOLOR
-out vec4 gl_FragColor;
+out vec4 frag_color;
+#else
+#define frag_color gl_FragColor
 #endif
 
 uniform float minimum_alpha;
@@ -48,6 +50,6 @@ void default_lighting()
 
 	color.rgb = scaleSoftClip(color.rgb);
 
-	gl_FragColor = color;
+	frag_color = color;
 }
 
diff --git a/indra/newview/app_settings/shaders/class1/lighting/lightAlphaMaskNonIndexedF.glsl b/indra/newview/app_settings/shaders/class1/lighting/lightAlphaMaskNonIndexedF.glsl
index 1164e5b0a6..4070d41f47 100644
--- a/indra/newview/app_settings/shaders/class1/lighting/lightAlphaMaskNonIndexedF.glsl
+++ b/indra/newview/app_settings/shaders/class1/lighting/lightAlphaMaskNonIndexedF.glsl
@@ -24,7 +24,9 @@
  */
 
 #ifdef DEFINE_GL_FRAGCOLOR
-out vec4 gl_FragColor;
+out vec4 frag_color;
+#else
+#define frag_color gl_FragColor
 #endif
 
 uniform float minimum_alpha;
@@ -50,6 +52,6 @@ void default_lighting()
 
 	color.rgb = scaleSoftClip(color.rgb);
 
-	gl_FragColor = color;
+	frag_color = color;
 }
 
diff --git a/indra/newview/app_settings/shaders/class1/lighting/lightF.glsl b/indra/newview/app_settings/shaders/class1/lighting/lightF.glsl
index 735f5b3813..d6ebfcb825 100644
--- a/indra/newview/app_settings/shaders/class1/lighting/lightF.glsl
+++ b/indra/newview/app_settings/shaders/class1/lighting/lightF.glsl
@@ -24,7 +24,9 @@
  */
 
 #ifdef DEFINE_GL_FRAGCOLOR
-out vec4 gl_FragColor;
+out vec4 frag_color;
+#else
+#define frag_color gl_FragColor
 #endif
 
 VARYING vec4 vertex_color;
@@ -41,6 +43,6 @@ void default_lighting()
 
 	color.rgb = scaleSoftClip(color.rgb);
 
-	gl_FragColor = color;
+	frag_color = color;
 }
 
diff --git a/indra/newview/app_settings/shaders/class1/lighting/lightFullbrightAlphaMaskF.glsl b/indra/newview/app_settings/shaders/class1/lighting/lightFullbrightAlphaMaskF.glsl
index ba99c0ed71..6c34643aab 100644
--- a/indra/newview/app_settings/shaders/class1/lighting/lightFullbrightAlphaMaskF.glsl
+++ b/indra/newview/app_settings/shaders/class1/lighting/lightFullbrightAlphaMaskF.glsl
@@ -24,7 +24,9 @@
  */
 
 #ifdef DEFINE_GL_FRAGCOLOR
-out vec4 gl_FragColor;
+out vec4 frag_color;
+#else
+#define frag_color gl_FragColor
 #endif
 
 uniform float minimum_alpha;
@@ -48,6 +50,6 @@ void fullbright_lighting()
 	
 	color.rgb = fullbrightScaleSoftClip(color.rgb);
 
-	gl_FragColor = color;
+	frag_color = color;
 }
 
diff --git a/indra/newview/app_settings/shaders/class1/lighting/lightFullbrightF.glsl b/indra/newview/app_settings/shaders/class1/lighting/lightFullbrightF.glsl
index c3edc0bd70..2ff7f795b0 100644
--- a/indra/newview/app_settings/shaders/class1/lighting/lightFullbrightF.glsl
+++ b/indra/newview/app_settings/shaders/class1/lighting/lightFullbrightF.glsl
@@ -24,7 +24,9 @@
  */
 
 #ifdef DEFINE_GL_FRAGCOLOR
-out vec4 gl_FragColor;
+out vec4 frag_color;
+#else
+#define frag_color gl_FragColor
 #endif
 
 VARYING vec4 vertex_color;
@@ -41,6 +43,6 @@ void fullbright_lighting()
 	
 	color.rgb = fullbrightScaleSoftClip(color.rgb);
 
-	gl_FragColor = color;
+	frag_color = color;
 }
 
diff --git a/indra/newview/app_settings/shaders/class1/lighting/lightFullbrightNonIndexedAlphaMaskF.glsl b/indra/newview/app_settings/shaders/class1/lighting/lightFullbrightNonIndexedAlphaMaskF.glsl
index 276fad4f44..f4477bd29a 100644
--- a/indra/newview/app_settings/shaders/class1/lighting/lightFullbrightNonIndexedAlphaMaskF.glsl
+++ b/indra/newview/app_settings/shaders/class1/lighting/lightFullbrightNonIndexedAlphaMaskF.glsl
@@ -24,7 +24,9 @@
  */
 
 #ifdef DEFINE_GL_FRAGCOLOR
-out vec4 gl_FragColor;
+out vec4 frag_color;
+#else
+#define frag_color gl_FragColor
 #endif
 
 uniform float minimum_alpha;
@@ -50,6 +52,6 @@ void fullbright_lighting()
 	
 	color.rgb = fullbrightScaleSoftClip(color.rgb);
 
-	gl_FragColor = color;
+	frag_color = color;
 }
 
diff --git a/indra/newview/app_settings/shaders/class1/lighting/lightFullbrightNonIndexedF.glsl b/indra/newview/app_settings/shaders/class1/lighting/lightFullbrightNonIndexedF.glsl
index 4e1e664e6b..2738ff8947 100644
--- a/indra/newview/app_settings/shaders/class1/lighting/lightFullbrightNonIndexedF.glsl
+++ b/indra/newview/app_settings/shaders/class1/lighting/lightFullbrightNonIndexedF.glsl
@@ -24,7 +24,9 @@
  */
 
 #ifdef DEFINE_GL_FRAGCOLOR
-out vec4 gl_FragColor;
+out vec4 frag_color;
+#else
+#define frag_color gl_FragColor
 #endif
 
 VARYING vec4 vertex_color;
@@ -43,6 +45,6 @@ void fullbright_lighting()
 	
 	color.rgb = fullbrightScaleSoftClip(color.rgb);
 
-	gl_FragColor = color;
+	frag_color = color;
 }
 
diff --git a/indra/newview/app_settings/shaders/class1/lighting/lightFullbrightShinyF.glsl b/indra/newview/app_settings/shaders/class1/lighting/lightFullbrightShinyF.glsl
index c981e9eba2..777c8b45bb 100644
--- a/indra/newview/app_settings/shaders/class1/lighting/lightFullbrightShinyF.glsl
+++ b/indra/newview/app_settings/shaders/class1/lighting/lightFullbrightShinyF.glsl
@@ -24,7 +24,9 @@
  */
 
 #ifdef DEFINE_GL_FRAGCOLOR
-out vec4 gl_FragColor;
+out vec4 frag_color;
+#else
+#define frag_color gl_FragColor
 #endif
 
 VARYING vec4 vertex_color;
@@ -50,6 +52,6 @@ void fullbright_shiny_lighting()
 
 	color.a = max(color.a, vertex_color.a);
 
-	gl_FragColor = color;
+	frag_color = color;
 }
 
diff --git a/indra/newview/app_settings/shaders/class1/lighting/lightFullbrightShinyNonIndexedF.glsl b/indra/newview/app_settings/shaders/class1/lighting/lightFullbrightShinyNonIndexedF.glsl
index a4893f0359..4fa3b1d939 100644
--- a/indra/newview/app_settings/shaders/class1/lighting/lightFullbrightShinyNonIndexedF.glsl
+++ b/indra/newview/app_settings/shaders/class1/lighting/lightFullbrightShinyNonIndexedF.glsl
@@ -24,7 +24,9 @@
  */
 
 #ifdef DEFINE_GL_FRAGCOLOR
-out vec4 gl_FragColor;
+out vec4 frag_color;
+#else
+#define frag_color gl_FragColor
 #endif
 
 VARYING vec4 vertex_color;
@@ -51,6 +53,6 @@ void fullbright_shiny_lighting()
 
 	color.a = max(color.a, vertex_color.a);
 
-	gl_FragColor = color;
+	frag_color = color;
 }
 
diff --git a/indra/newview/app_settings/shaders/class1/lighting/lightFullbrightShinyWaterF.glsl b/indra/newview/app_settings/shaders/class1/lighting/lightFullbrightShinyWaterF.glsl
index c10cde98e0..58984a4263 100644
--- a/indra/newview/app_settings/shaders/class1/lighting/lightFullbrightShinyWaterF.glsl
+++ b/indra/newview/app_settings/shaders/class1/lighting/lightFullbrightShinyWaterF.glsl
@@ -23,7 +23,9 @@
  */
  
 #ifdef DEFINE_GL_FRAGCOLOR
-out vec4 gl_FragColor;
+out vec4 frag_color;
+#else
+#define frag_color gl_FragColor
 #endif
 
 VARYING vec4 vertex_color;
@@ -48,6 +50,6 @@ void fullbright_shiny_lighting_water()
 	color.rgb = fullbrightScaleSoftClip(color.rgb);
 	color.a = max(color.a, vertex_color.a);
 
-	gl_FragColor = applyWaterFog(color);
+	frag_color = applyWaterFog(color);
 }
 
diff --git a/indra/newview/app_settings/shaders/class1/lighting/lightFullbrightShinyWaterNonIndexedF.glsl b/indra/newview/app_settings/shaders/class1/lighting/lightFullbrightShinyWaterNonIndexedF.glsl
index e9b26087f4..a39b7205d7 100644
--- a/indra/newview/app_settings/shaders/class1/lighting/lightFullbrightShinyWaterNonIndexedF.glsl
+++ b/indra/newview/app_settings/shaders/class1/lighting/lightFullbrightShinyWaterNonIndexedF.glsl
@@ -23,7 +23,9 @@
  */
  
 #ifdef DEFINE_GL_FRAGCOLOR
-out vec4 gl_FragColor;
+out vec4 frag_color;
+#else
+#define frag_color gl_FragColor
 #endif
 
 VARYING vec4 vertex_color;
@@ -49,6 +51,6 @@ void fullbright_shiny_lighting_water()
 	color.rgb = fullbrightScaleSoftClip(color.rgb);
 	color.a = max(color.a, vertex_color.a);
 
-	gl_FragColor = applyWaterFog(color);
+	frag_color = applyWaterFog(color);
 }
 
diff --git a/indra/newview/app_settings/shaders/class1/lighting/lightFullbrightWaterAlphaMaskF.glsl b/indra/newview/app_settings/shaders/class1/lighting/lightFullbrightWaterAlphaMaskF.glsl
index 754b2922d9..99a6fe85fe 100644
--- a/indra/newview/app_settings/shaders/class1/lighting/lightFullbrightWaterAlphaMaskF.glsl
+++ b/indra/newview/app_settings/shaders/class1/lighting/lightFullbrightWaterAlphaMaskF.glsl
@@ -24,7 +24,9 @@
  */
 
 #ifdef DEFINE_GL_FRAGCOLOR
-out vec4 gl_FragColor;
+out vec4 frag_color;
+#else
+#define frag_color gl_FragColor
 #endif
 
 uniform float minimum_alpha;
@@ -48,6 +50,6 @@ void fullbright_lighting_water()
 
 	color.rgb = fullbrightAtmosTransport(color.rgb);
 	
-	gl_FragColor = applyWaterFog(color);
+	frag_color = applyWaterFog(color);
 }
 
diff --git a/indra/newview/app_settings/shaders/class1/lighting/lightFullbrightWaterF.glsl b/indra/newview/app_settings/shaders/class1/lighting/lightFullbrightWaterF.glsl
index 2547f9e750..df182168f3 100644
--- a/indra/newview/app_settings/shaders/class1/lighting/lightFullbrightWaterF.glsl
+++ b/indra/newview/app_settings/shaders/class1/lighting/lightFullbrightWaterF.glsl
@@ -24,7 +24,9 @@
  */
 
 #ifdef DEFINE_GL_FRAGCOLOR
-out vec4 gl_FragColor;
+out vec4 frag_color;
+#else
+#define frag_color gl_FragColor
 #endif
 
 VARYING vec4 vertex_color;
@@ -41,6 +43,6 @@ void fullbright_lighting_water()
 
 	color.rgb = fullbrightAtmosTransport(color.rgb);
 	
-	gl_FragColor = applyWaterFog(color);
+	frag_color = applyWaterFog(color);
 }
 
diff --git a/indra/newview/app_settings/shaders/class1/lighting/lightFullbrightWaterNonIndexedAlphaMaskF.glsl b/indra/newview/app_settings/shaders/class1/lighting/lightFullbrightWaterNonIndexedAlphaMaskF.glsl
index f69b907dc7..63f92a8844 100644
--- a/indra/newview/app_settings/shaders/class1/lighting/lightFullbrightWaterNonIndexedAlphaMaskF.glsl
+++ b/indra/newview/app_settings/shaders/class1/lighting/lightFullbrightWaterNonIndexedAlphaMaskF.glsl
@@ -24,7 +24,9 @@
  */
 
 #ifdef DEFINE_GL_FRAGCOLOR
-out vec4 gl_FragColor;
+out vec4 frag_color;
+#else
+#define frag_color gl_FragColor
 #endif
 
 uniform float minimum_alpha;
@@ -48,6 +50,6 @@ void fullbright_lighting_water()
 
 	color.rgb = fullbrightAtmosTransport(color.rgb);
 	
-	gl_FragColor = applyWaterFog(color);
+	frag_color = applyWaterFog(color);
 }
 
diff --git a/indra/newview/app_settings/shaders/class1/lighting/lightFullbrightWaterNonIndexedF.glsl b/indra/newview/app_settings/shaders/class1/lighting/lightFullbrightWaterNonIndexedF.glsl
index aa3ef8cdd9..0e68091e7c 100644
--- a/indra/newview/app_settings/shaders/class1/lighting/lightFullbrightWaterNonIndexedF.glsl
+++ b/indra/newview/app_settings/shaders/class1/lighting/lightFullbrightWaterNonIndexedF.glsl
@@ -24,7 +24,9 @@
  */
 
 #ifdef DEFINE_GL_FRAGCOLOR
-out vec4 gl_FragColor;
+out vec4 frag_color;
+#else
+#define frag_color gl_FragColor
 #endif
 
 VARYING vec4 vertex_color;
@@ -41,6 +43,6 @@ void fullbright_lighting_water()
 
 	color.rgb = fullbrightAtmosTransport(color.rgb);
 	
-	gl_FragColor = applyWaterFog(color);
+	frag_color = applyWaterFog(color);
 }
 
diff --git a/indra/newview/app_settings/shaders/class1/lighting/lightNonIndexedF.glsl b/indra/newview/app_settings/shaders/class1/lighting/lightNonIndexedF.glsl
index 9f1a358b53..0aca768021 100644
--- a/indra/newview/app_settings/shaders/class1/lighting/lightNonIndexedF.glsl
+++ b/indra/newview/app_settings/shaders/class1/lighting/lightNonIndexedF.glsl
@@ -24,7 +24,9 @@
  */
 
 #ifdef DEFINE_GL_FRAGCOLOR
-out vec4 gl_FragColor;
+out vec4 frag_color;
+#else
+#define frag_color gl_FragColor
 #endif
  
 VARYING vec4 vertex_color;
@@ -43,6 +45,6 @@ void default_lighting()
 
 	color.rgb = scaleSoftClip(color.rgb);
 
-	gl_FragColor = color;
+	frag_color = color;
 }
 
diff --git a/indra/newview/app_settings/shaders/class1/lighting/lightShinyF.glsl b/indra/newview/app_settings/shaders/class1/lighting/lightShinyF.glsl
index e9c27dbefd..52e3b2ad02 100644
--- a/indra/newview/app_settings/shaders/class1/lighting/lightShinyF.glsl
+++ b/indra/newview/app_settings/shaders/class1/lighting/lightShinyF.glsl
@@ -24,7 +24,9 @@
  */
 
 #ifdef DEFINE_GL_FRAGCOLOR
-out vec4 gl_FragColor;
+out vec4 frag_color;
+#else
+#define frag_color gl_FragColor
 #endif
 
 VARYING vec4 vertex_color;
@@ -49,6 +51,6 @@ void shiny_lighting()
 
 	color.rgb = scaleSoftClip(color.rgb);
 	color.a = max(color.a, vertex_color.a);
-	gl_FragColor = color;
+	frag_color = color;
 }
 
diff --git a/indra/newview/app_settings/shaders/class1/lighting/lightShinyNonIndexedF.glsl b/indra/newview/app_settings/shaders/class1/lighting/lightShinyNonIndexedF.glsl
index 595ad74365..474d5ea496 100644
--- a/indra/newview/app_settings/shaders/class1/lighting/lightShinyNonIndexedF.glsl
+++ b/indra/newview/app_settings/shaders/class1/lighting/lightShinyNonIndexedF.glsl
@@ -24,7 +24,9 @@
  */
 
 #ifdef DEFINE_GL_FRAGCOLOR
-out vec4 gl_FragColor;
+out vec4 frag_color;
+#else
+#define frag_color gl_FragColor
 #endif
  
 VARYING vec4 vertex_color;
@@ -50,6 +52,6 @@ void shiny_lighting()
 
 	color.rgb = scaleSoftClip(color.rgb);
 	color.a = max(color.a, vertex_color.a);
-	gl_FragColor = color;
+	frag_color = color;
 }
 
diff --git a/indra/newview/app_settings/shaders/class1/lighting/lightShinyWaterF.glsl b/indra/newview/app_settings/shaders/class1/lighting/lightShinyWaterF.glsl
index 68c727d62c..d2a4c47aac 100644
--- a/indra/newview/app_settings/shaders/class1/lighting/lightShinyWaterF.glsl
+++ b/indra/newview/app_settings/shaders/class1/lighting/lightShinyWaterF.glsl
@@ -24,7 +24,9 @@
  */
 
 #ifdef DEFINE_GL_FRAGCOLOR
-out vec4 gl_FragColor;
+out vec4 frag_color;
+#else
+#define frag_color gl_FragColor
 #endif
 
 VARYING vec4 vertex_color;
@@ -46,6 +48,6 @@ void shiny_lighting_water()
 
 	color.rgb = atmosLighting(color.rgb);
 	color.a = max(color.a, vertex_color.a);
-	gl_FragColor = applyWaterFog(color);
+	frag_color = applyWaterFog(color);
 }
 
diff --git a/indra/newview/app_settings/shaders/class1/lighting/lightShinyWaterNonIndexedF.glsl b/indra/newview/app_settings/shaders/class1/lighting/lightShinyWaterNonIndexedF.glsl
index f32b9e1958..f3bd662364 100644
--- a/indra/newview/app_settings/shaders/class1/lighting/lightShinyWaterNonIndexedF.glsl
+++ b/indra/newview/app_settings/shaders/class1/lighting/lightShinyWaterNonIndexedF.glsl
@@ -24,7 +24,9 @@
  */
 
 #ifdef DEFINE_GL_FRAGCOLOR
-out vec4 gl_FragColor;
+out vec4 frag_color;
+#else
+#define frag_color gl_FragColor
 #endif
 
 VARYING vec4 vertex_color;
@@ -47,6 +49,6 @@ void shiny_lighting_water()
 
 	color.rgb = atmosLighting(color.rgb);
 	color.a = max(color.a, vertex_color.a);
-	gl_FragColor = applyWaterFog(color);
+	frag_color = applyWaterFog(color);
 }
 
diff --git a/indra/newview/app_settings/shaders/class1/lighting/lightWaterAlphaMaskF.glsl b/indra/newview/app_settings/shaders/class1/lighting/lightWaterAlphaMaskF.glsl
index 103dd633c9..b68240ba0d 100644
--- a/indra/newview/app_settings/shaders/class1/lighting/lightWaterAlphaMaskF.glsl
+++ b/indra/newview/app_settings/shaders/class1/lighting/lightWaterAlphaMaskF.glsl
@@ -24,7 +24,9 @@
  */
 
 #ifdef DEFINE_GL_FRAGCOLOR
-out vec4 gl_FragColor;
+out vec4 frag_color;
+#else
+#define frag_color gl_FragColor
 #endif
 
 uniform float minimum_alpha;
@@ -46,6 +48,6 @@ void default_lighting_water()
 
 	color.rgb = atmosLighting(color.rgb);
 
-	gl_FragColor = applyWaterFog(color);
+	frag_color = applyWaterFog(color);
 }
 
diff --git a/indra/newview/app_settings/shaders/class1/lighting/lightWaterAlphaMaskNonIndexedF.glsl b/indra/newview/app_settings/shaders/class1/lighting/lightWaterAlphaMaskNonIndexedF.glsl
index bef72752da..da3b20012d 100644
--- a/indra/newview/app_settings/shaders/class1/lighting/lightWaterAlphaMaskNonIndexedF.glsl
+++ b/indra/newview/app_settings/shaders/class1/lighting/lightWaterAlphaMaskNonIndexedF.glsl
@@ -24,7 +24,9 @@
  */
 
 #ifdef DEFINE_GL_FRAGCOLOR
-out vec4 gl_FragColor;
+out vec4 frag_color;
+#else
+#define frag_color gl_FragColor
 #endif
 
 uniform float minimum_alpha;
@@ -50,6 +52,6 @@ void default_lighting_water()
 
 	color = applyWaterFog(color);
 	
-	gl_FragColor = color;
+	frag_color = color;
 }
 
diff --git a/indra/newview/app_settings/shaders/class1/lighting/lightWaterF.glsl b/indra/newview/app_settings/shaders/class1/lighting/lightWaterF.glsl
index e9537d1e9d..00609e93cd 100644
--- a/indra/newview/app_settings/shaders/class1/lighting/lightWaterF.glsl
+++ b/indra/newview/app_settings/shaders/class1/lighting/lightWaterF.glsl
@@ -24,8 +24,10 @@
  */
 
 #ifdef DEFINE_GL_FRAGCOLOR
-out vec4 gl_FragColor;
-#endif 
+out vec4 frag_color;
+#else
+#define frag_color gl_FragColor
+#endif
 
 VARYING vec4 vertex_color;
 VARYING vec2 vary_texcoord0;
@@ -39,6 +41,6 @@ void default_lighting_water()
 
 	color.rgb = atmosLighting(color.rgb);
 
-	gl_FragColor = applyWaterFog(color);
+	frag_color = applyWaterFog(color);
 }
 
diff --git a/indra/newview/app_settings/shaders/class1/lighting/lightWaterNonIndexedF.glsl b/indra/newview/app_settings/shaders/class1/lighting/lightWaterNonIndexedF.glsl
index 8b0c25b705..13ecb7a636 100644
--- a/indra/newview/app_settings/shaders/class1/lighting/lightWaterNonIndexedF.glsl
+++ b/indra/newview/app_settings/shaders/class1/lighting/lightWaterNonIndexedF.glsl
@@ -24,7 +24,9 @@
  */
 
 #ifdef DEFINE_GL_FRAGCOLOR
-out vec4 gl_FragColor;
+out vec4 frag_color;
+#else
+#define frag_color gl_FragColor
 #endif
 
 VARYING vec4 vertex_color;
@@ -41,6 +43,6 @@ void default_lighting_water()
 
 	color.rgb = atmosLighting(color.rgb);
 
-	gl_FragColor = applyWaterFog(color);
+	frag_color = applyWaterFog(color);
 }
 
diff --git a/indra/newview/app_settings/shaders/class1/objects/bumpF.glsl b/indra/newview/app_settings/shaders/class1/objects/bumpF.glsl
index 4b85d61aca..d55f0db530 100644
--- a/indra/newview/app_settings/shaders/class1/objects/bumpF.glsl
+++ b/indra/newview/app_settings/shaders/class1/objects/bumpF.glsl
@@ -24,7 +24,9 @@
  */
 
 #ifdef DEFINE_GL_FRAGCOLOR
-out vec4 gl_FragColor;
+out vec4 frag_color;
+#else
+#define frag_color gl_FragColor
 #endif
 
 uniform sampler2D texture0;
@@ -38,5 +40,5 @@ void main()
 	float tex0 = texture2D(texture0, vary_texcoord0.xy).a;
 	float tex1 = texture2D(texture1, vary_texcoord1.xy).a;
 
-	gl_FragColor = vec4(tex0+(1.0-tex1)-0.5);
+	frag_color = vec4(tex0+(1.0-tex1)-0.5);
 }
diff --git a/indra/newview/app_settings/shaders/class1/objects/impostorF.glsl b/indra/newview/app_settings/shaders/class1/objects/impostorF.glsl
index 3c6e22b295..add437d144 100644
--- a/indra/newview/app_settings/shaders/class1/objects/impostorF.glsl
+++ b/indra/newview/app_settings/shaders/class1/objects/impostorF.glsl
@@ -24,7 +24,9 @@
  */
 
 #ifdef DEFINE_GL_FRAGCOLOR
-out vec4 gl_FragColor;
+out vec4 frag_color;
+#else
+#define frag_color gl_FragColor
 #endif
 
 uniform float minimum_alpha;
@@ -42,5 +44,5 @@ void main()
 		discard;
 	}
 
-	gl_FragColor = color;
+	frag_color = color;
 }
diff --git a/indra/newview/app_settings/shaders/class1/objects/indexedTextureV.glsl b/indra/newview/app_settings/shaders/class1/objects/indexedTextureV.glsl
index a95c9e0ab9..7c0699d72f 100644
--- a/indra/newview/app_settings/shaders/class1/objects/indexedTextureV.glsl
+++ b/indra/newview/app_settings/shaders/class1/objects/indexedTextureV.glsl
@@ -23,9 +23,9 @@
  * $/LicenseInfo$
  */
 
-ATTRIBUTE float texture_index;
+ATTRIBUTE ivec4 texture_index;
 
-VARYING float vary_texture_index;
+VARYING_FLAT ivec4 vary_texture_index;
 
 void passTextureIndex()
 {
diff --git a/indra/newview/app_settings/shaders/class2/deferred/alphaF.glsl b/indra/newview/app_settings/shaders/class2/deferred/alphaF.glsl
index 1179b212ae..08f6ec63fe 100644
--- a/indra/newview/app_settings/shaders/class2/deferred/alphaF.glsl
+++ b/indra/newview/app_settings/shaders/class2/deferred/alphaF.glsl
@@ -26,7 +26,9 @@
 #extension GL_ARB_texture_rectangle : enable
 
 #ifdef DEFINE_GL_FRAGCOLOR
-out vec4 gl_FragColor;
+out vec4 frag_color;
+#else
+#define frag_color gl_FragColor
 #endif
 
 VARYING vec4 vertex_color;
@@ -78,7 +80,7 @@ void main()
 	vec2 frag = vary_fragcoord.xy/vary_fragcoord.z*0.5+0.5;
 	frag *= screen_res;
 	
-	float shadow = 1.0;
+	float shadow = 0.0;
 	vec4 pos = vec4(vary_position, 1.0);
 	
 	vec4 spos = pos;
@@ -87,31 +89,65 @@ void main()
 	{	
 		vec4 lpos;
 		
-		if (spos.z < -shadow_clip.z)
+		vec4 near_split = shadow_clip*-0.75;
+		vec4 far_split = shadow_clip*-1.25;
+		vec4 transition_domain = near_split-far_split;
+		float weight = 0.0;
+
+		if (spos.z < near_split.z)
 		{
 			lpos = shadow_matrix[3]*spos;
 			lpos.xy *= shadow_res;
-			shadow = pcfShadow(shadowMap3, lpos, 1.5);
+
+			float w = 1.0;
+			w -= max(spos.z-far_split.z, 0.0)/transition_domain.z;
+			shadow += pcfShadow(shadowMap3, lpos, 0.25)*w;
+			weight += w;
 			shadow += max((pos.z+shadow_clip.z)/(shadow_clip.z-shadow_clip.w)*2.0-1.0, 0.0);
 		}
-		else if (spos.z < -shadow_clip.y)
+
+		if (spos.z < near_split.y && spos.z > far_split.z)
 		{
 			lpos = shadow_matrix[2]*spos;
 			lpos.xy *= shadow_res;
-			shadow = pcfShadow(shadowMap2, lpos, 1.5);
+
+			float w = 1.0;
+			w -= max(spos.z-far_split.y, 0.0)/transition_domain.y;
+			w -= max(near_split.z-spos.z, 0.0)/transition_domain.z;
+			shadow += pcfShadow(shadowMap2, lpos, 0.75)*w;
+			weight += w;
 		}
-		else if (spos.z < -shadow_clip.x)
+
+		if (spos.z < near_split.x && spos.z > far_split.y)
 		{
 			lpos = shadow_matrix[1]*spos;
 			lpos.xy *= shadow_res;
-			shadow = pcfShadow(shadowMap1, lpos, 1.5);
+
+			float w = 1.0;
+			w -= max(spos.z-far_split.x, 0.0)/transition_domain.x;
+			w -= max(near_split.y-spos.z, 0.0)/transition_domain.y;
+			shadow += pcfShadow(shadowMap1, lpos, 0.75)*w;
+			weight += w;
 		}
-		else
+
+		if (spos.z > far_split.x)
 		{
 			lpos = shadow_matrix[0]*spos;
 			lpos.xy *= shadow_res;
-			shadow = pcfShadow(shadowMap0, lpos, 1.5);
+				
+			float w = 1.0;
+			w -= max(near_split.x-spos.z, 0.0)/transition_domain.x;
+				
+			shadow += pcfShadow(shadowMap0, lpos, 1.0)*w;
+			weight += w;
 		}
+		
+
+		shadow /= weight;
+	}
+	else
+	{
+		shadow = 1.0;
 	}
 	
 	vec4 diff = diffuseLookup(vary_texcoord0.xy);
@@ -125,6 +161,6 @@ void main()
 
 	color.rgb += diff.rgb * vary_pointlight_col.rgb;
 
-	gl_FragColor = color;
+	frag_color = color;
 }
 
diff --git a/indra/newview/app_settings/shaders/class2/deferred/alphaNonIndexedF.glsl b/indra/newview/app_settings/shaders/class2/deferred/alphaNonIndexedF.glsl
index 0df557f2aa..aae6a070e2 100644
--- a/indra/newview/app_settings/shaders/class2/deferred/alphaNonIndexedF.glsl
+++ b/indra/newview/app_settings/shaders/class2/deferred/alphaNonIndexedF.glsl
@@ -26,7 +26,9 @@
 #extension GL_ARB_texture_rectangle : enable
 
 #ifdef DEFINE_GL_FRAGCOLOR
-out vec4 gl_FragColor;
+out vec4 frag_color;
+#else
+#define frag_color gl_FragColor
 #endif
 
 uniform sampler2DRectShadow shadowMap0;
@@ -91,7 +93,7 @@ void main()
 	vec2 frag = vary_fragcoord.xy/vary_fragcoord.z*0.5+0.5;
 	frag *= screen_res;
 	
-	float shadow = 1.0;
+	float shadow = 0.0;
 	vec4 pos = vec4(vary_position, 1.0);
 	
 	vec4 spos = pos;
@@ -100,33 +102,68 @@ void main()
 	{	
 		vec4 lpos;
 		
-		if (spos.z < -shadow_clip.z)
+		vec4 near_split = shadow_clip*-0.75;
+		vec4 far_split = shadow_clip*-1.25;
+		vec4 transition_domain = near_split-far_split;
+		float weight = 0.0;
+
+		if (spos.z < near_split.z)
 		{
 			lpos = shadow_matrix[3]*spos;
 			lpos.xy *= shadow_res;
-			shadow = pcfShadow(shadowMap3, lpos, 1.5);
+
+			float w = 1.0;
+			w -= max(spos.z-far_split.z, 0.0)/transition_domain.z;
+			shadow += pcfShadow(shadowMap3, lpos, 0.25)*w;
+			weight += w;
 			shadow += max((pos.z+shadow_clip.z)/(shadow_clip.z-shadow_clip.w)*2.0-1.0, 0.0);
 		}
-		else if (spos.z < -shadow_clip.y)
+
+		if (spos.z < near_split.y && spos.z > far_split.z)
 		{
 			lpos = shadow_matrix[2]*spos;
 			lpos.xy *= shadow_res;
-			shadow = pcfShadow(shadowMap2, lpos, 1.5);
+
+			float w = 1.0;
+			w -= max(spos.z-far_split.y, 0.0)/transition_domain.y;
+			w -= max(near_split.z-spos.z, 0.0)/transition_domain.z;
+			shadow += pcfShadow(shadowMap2, lpos, 0.75)*w;
+			weight += w;
 		}
-		else if (spos.z < -shadow_clip.x)
+
+		if (spos.z < near_split.x && spos.z > far_split.y)
 		{
 			lpos = shadow_matrix[1]*spos;
 			lpos.xy *= shadow_res;
-			shadow = pcfShadow(shadowMap1, lpos, 1.5);
+
+			float w = 1.0;
+			w -= max(spos.z-far_split.x, 0.0)/transition_domain.x;
+			w -= max(near_split.y-spos.z, 0.0)/transition_domain.y;
+			shadow += pcfShadow(shadowMap1, lpos, 0.75)*w;
+			weight += w;
 		}
-		else
+
+		if (spos.z > far_split.x)
 		{
 			lpos = shadow_matrix[0]*spos;
 			lpos.xy *= shadow_res;
-			shadow = pcfShadow(shadowMap0, lpos, 1.5);
+				
+			float w = 1.0;
+			w -= max(near_split.x-spos.z, 0.0)/transition_domain.x;
+				
+			shadow += pcfShadow(shadowMap0, lpos, 1.0)*w;
+			weight += w;
 		}
+		
+
+		shadow /= weight;
+
 	}
-	
+	else
+	{
+		shadow = 1.0;
+	}
+
 	vec4 diff = texture2D(diffuseMap,vary_texcoord0.xy);
 
 	vec4 col = vec4(vary_ambient + vary_directional.rgb*shadow, vertex_color.a);
@@ -138,6 +175,6 @@ void main()
 
 	color.rgb += diff.rgb * vary_pointlight_col.rgb;
 
-	gl_FragColor = color;	
+	frag_color = color;	
 }
 
diff --git a/indra/newview/app_settings/shaders/class2/deferred/alphaNonIndexedNoColorF.glsl b/indra/newview/app_settings/shaders/class2/deferred/alphaNonIndexedNoColorF.glsl
index 331dbc7079..931577359e 100644
--- a/indra/newview/app_settings/shaders/class2/deferred/alphaNonIndexedNoColorF.glsl
+++ b/indra/newview/app_settings/shaders/class2/deferred/alphaNonIndexedNoColorF.glsl
@@ -26,7 +26,9 @@
 #extension GL_ARB_texture_rectangle : enable
 
 #ifdef DEFINE_GL_FRAGCOLOR
-out vec4 gl_FragColor;
+out vec4 frag_color;
+#else
+#define frag_color gl_FragColor
 #endif
 
 uniform sampler2DRectShadow shadowMap0;
@@ -90,7 +92,7 @@ void main()
 	vec2 frag = vary_fragcoord.xy/vary_fragcoord.z*0.5+0.5;
 	frag *= screen_res;
 	
-	float shadow = 1.0;
+	float shadow = 0.0;
 	vec4 pos = vec4(vary_position, 1.0);
 	
 	vec4 spos = pos;
@@ -99,31 +101,65 @@ void main()
 	{	
 		vec4 lpos;
 		
-		if (spos.z < -shadow_clip.z)
+		vec4 near_split = shadow_clip*-0.75;
+		vec4 far_split = shadow_clip*-1.25;
+		vec4 transition_domain = near_split-far_split;
+		float weight = 0.0;
+
+		if (spos.z < near_split.z)
 		{
 			lpos = shadow_matrix[3]*spos;
 			lpos.xy *= shadow_res;
-			shadow = pcfShadow(shadowMap3, lpos, 1.5);
+
+			float w = 1.0;
+			w -= max(spos.z-far_split.z, 0.0)/transition_domain.z;
+			shadow += pcfShadow(shadowMap3, lpos, 0.25)*w;
+			weight += w;
 			shadow += max((pos.z+shadow_clip.z)/(shadow_clip.z-shadow_clip.w)*2.0-1.0, 0.0);
 		}
-		else if (spos.z < -shadow_clip.y)
+
+		if (spos.z < near_split.y && spos.z > far_split.z)
 		{
 			lpos = shadow_matrix[2]*spos;
 			lpos.xy *= shadow_res;
-			shadow = pcfShadow(shadowMap2, lpos, 1.5);
+
+			float w = 1.0;
+			w -= max(spos.z-far_split.y, 0.0)/transition_domain.y;
+			w -= max(near_split.z-spos.z, 0.0)/transition_domain.z;
+			shadow += pcfShadow(shadowMap2, lpos, 0.75)*w;
+			weight += w;
 		}
-		else if (spos.z < -shadow_clip.x)
+
+		if (spos.z < near_split.x && spos.z > far_split.y)
 		{
 			lpos = shadow_matrix[1]*spos;
 			lpos.xy *= shadow_res;
-			shadow = pcfShadow(shadowMap1, lpos, 1.5);
+
+			float w = 1.0;
+			w -= max(spos.z-far_split.x, 0.0)/transition_domain.x;
+			w -= max(near_split.y-spos.z, 0.0)/transition_domain.y;
+			shadow += pcfShadow(shadowMap1, lpos, 0.75)*w;
+			weight += w;
 		}
-		else
+
+		if (spos.z > far_split.x)
 		{
 			lpos = shadow_matrix[0]*spos;
 			lpos.xy *= shadow_res;
-			shadow = pcfShadow(shadowMap0, lpos, 1.5);
+				
+			float w = 1.0;
+			w -= max(near_split.x-spos.z, 0.0)/transition_domain.x;
+				
+			shadow += pcfShadow(shadowMap0, lpos, 1.0)*w;
+			weight += w;
 		}
+		
+
+		shadow /= weight;
+	}
+	else
+	{
+		shadow = 1.0;
 	}
 	
 	vec4 diff = texture2D(diffuseMap,vary_texcoord0.xy);
@@ -137,6 +173,6 @@ void main()
 
 	color.rgb += diff.rgb * vary_pointlight_col.rgb;
 
-	gl_FragColor = color;
+	frag_color = color;
 }
 
diff --git a/indra/newview/app_settings/shaders/class2/deferred/alphaSkinnedV.glsl b/indra/newview/app_settings/shaders/class2/deferred/alphaSkinnedV.glsl
index 5a3955ef00..9629cfe824 100644
--- a/indra/newview/app_settings/shaders/class2/deferred/alphaSkinnedV.glsl
+++ b/indra/newview/app_settings/shaders/class2/deferred/alphaSkinnedV.glsl
@@ -61,23 +61,29 @@ uniform vec3 light_direction[8];
 uniform vec3 light_attenuation[8]; 
 uniform vec3 light_diffuse[8];
 
+float calcDirectionalLight(vec3 n, vec3 l)
+{
+        float a = max(dot(n,l),0.0);
+        return a;
+}
+
 float calcPointLightOrSpotLight(vec3 v, vec3 n, vec4 lp, vec3 ln, float la, float fa, float is_pointlight)
 {
-	//get light vector
+//get light vector
 	vec3 lv = lp.xyz-v;
 	
 	//get distance
-	float d = length(lv);
+	float d = dot(lv,lv);
 	
 	float da = 0.0;
 
 	if (d > 0.0 && la > 0.0 && fa > 0.0)
 	{
 		//normalize light vector
-		lv *= 1.0/d;
+		lv = normalize(lv);
 	
 		//distance attenuation
-		float dist2 = d*d/(la*la);
+		float dist2 = d/la;
 		da = clamp(1.0-(dist2-1.0*(1.0-fa))/fa, 0.0, 1.0);
 
 		// spotlight coefficient.
@@ -85,7 +91,7 @@ float calcPointLightOrSpotLight(vec3 v, vec3 n, vec4 lp, vec3 ln, float la, floa
 		da *= spot*spot; // GL_SPOT_EXPONENT=2
 
 		//angular attenuation
-		da *= calcDirectionalLight(n, lv);
+		da *= max(dot(n, lv), 0.0);		
 	}
 
 	return da;	
diff --git a/indra/newview/app_settings/shaders/class2/deferred/alphaV.glsl b/indra/newview/app_settings/shaders/class2/deferred/alphaV.glsl
index 9540ddd2e8..1586aab0f2 100644
--- a/indra/newview/app_settings/shaders/class2/deferred/alphaV.glsl
+++ b/indra/newview/app_settings/shaders/class2/deferred/alphaV.glsl
@@ -63,23 +63,29 @@ uniform vec3 light_direction[8];
 uniform vec3 light_attenuation[8]; 
 uniform vec3 light_diffuse[8];
 
+float calcDirectionalLight(vec3 n, vec3 l)
+{
+        float a = max(dot(n,l),0.0);
+        return a;
+}
+
 float calcPointLightOrSpotLight(vec3 v, vec3 n, vec4 lp, vec3 ln, float la, float fa, float is_pointlight)
 {
 	//get light vector
 	vec3 lv = lp.xyz-v;
 	
 	//get distance
-	float d = length(lv);
+	float d = dot(lv,lv);
 	
 	float da = 0.0;
 
 	if (d > 0.0 && la > 0.0 && fa > 0.0)
 	{
 		//normalize light vector
-		lv *= 1.0/d;
+		lv = normalize(lv);
 	
 		//distance attenuation
-		float dist2 = d*d/(la*la);
+		float dist2 = d/la;
 		da = clamp(1.0-(dist2-1.0*(1.0-fa))/fa, 0.0, 1.0);
 
 		// spotlight coefficient.
@@ -87,7 +93,7 @@ float calcPointLightOrSpotLight(vec3 v, vec3 n, vec4 lp, vec3 ln, float la, floa
 		da *= spot*spot; // GL_SPOT_EXPONENT=2
 
 		//angular attenuation
-		da *= calcDirectionalLight(n, lv);
+		da *= max(dot(n, lv), 0.0);		
 	}
 
 	return da;	
diff --git a/indra/newview/app_settings/shaders/class2/deferred/avatarAlphaV.glsl b/indra/newview/app_settings/shaders/class2/deferred/avatarAlphaV.glsl
index 9c7a332417..44aaa98b97 100644
--- a/indra/newview/app_settings/shaders/class2/deferred/avatarAlphaV.glsl
+++ b/indra/newview/app_settings/shaders/class2/deferred/avatarAlphaV.glsl
@@ -60,23 +60,29 @@ uniform vec3 light_direction[8];
 uniform vec3 light_attenuation[8]; 
 uniform vec3 light_diffuse[8];
 
+float calcDirectionalLight(vec3 n, vec3 l)
+{
+        float a = max(dot(n,l),0.0);
+        return a;
+}
+
 float calcPointLightOrSpotLight(vec3 v, vec3 n, vec4 lp, vec3 ln, float la, float fa, float is_pointlight)
 {
 	//get light vector
 	vec3 lv = lp.xyz-v;
 	
 	//get distance
-	float d = length(lv);
+	float d = dot(lv,lv);
 	
 	float da = 0.0;
 
 	if (d > 0.0 && la > 0.0 && fa > 0.0)
 	{
 		//normalize light vector
-		lv *= 1.0/d;
+		lv = normalize(lv);
 	
 		//distance attenuation
-		float dist2 = d*d/(la*la);
+		float dist2 = d/la;
 		da = clamp(1.0-(dist2-1.0*(1.0-fa))/fa, 0.0, 1.0);
 
 		// spotlight coefficient.
@@ -84,7 +90,7 @@ float calcPointLightOrSpotLight(vec3 v, vec3 n, vec4 lp, vec3 ln, float la, floa
 		da *= spot*spot; // GL_SPOT_EXPONENT=2
 
 		//angular attenuation
-		da *= calcDirectionalLight(n, lv);
+		da *= max(dot(n, lv), 0.0);		
 	}
 
 	return da;	
diff --git a/indra/newview/app_settings/shaders/class2/deferred/multiSpotLightF.glsl b/indra/newview/app_settings/shaders/class2/deferred/multiSpotLightF.glsl
index 14a683971a..f7f1f649ce 100644
--- a/indra/newview/app_settings/shaders/class2/deferred/multiSpotLightF.glsl
+++ b/indra/newview/app_settings/shaders/class2/deferred/multiSpotLightF.glsl
@@ -26,7 +26,9 @@
 #extension GL_ARB_texture_rectangle : enable
 
 #ifdef DEFINE_GL_FRAGCOLOR
-out vec4 gl_FragColor;
+out vec4 frag_color;
+#else
+#define frag_color gl_FragColor
 #endif
 
 uniform sampler2DRect diffuseRect;
@@ -253,6 +255,6 @@ void main()
 		}
 	}
 	
-	gl_FragColor.rgb = col;	
-	gl_FragColor.a = 0.0;
+	frag_color.rgb = col;	
+	frag_color.a = 0.0;
 }
diff --git a/indra/newview/app_settings/shaders/class2/deferred/softenLightF.glsl b/indra/newview/app_settings/shaders/class2/deferred/softenLightF.glsl
index 97f3063a9e..61a7f1e32f 100644
--- a/indra/newview/app_settings/shaders/class2/deferred/softenLightF.glsl
+++ b/indra/newview/app_settings/shaders/class2/deferred/softenLightF.glsl
@@ -26,7 +26,9 @@
 #extension GL_ARB_texture_rectangle : enable
 
 #ifdef DEFINE_GL_FRAGCOLOR
-out vec4 gl_FragColor;
+out vec4 frag_color;
+#else
+#define frag_color gl_FragColor
 #endif
 
 uniform sampler2DRect diffuseRect;
@@ -51,12 +53,12 @@ uniform vec4 sunlight_color;
 uniform vec4 ambient;
 uniform vec4 blue_horizon;
 uniform vec4 blue_density;
-uniform vec4 haze_horizon;
-uniform vec4 haze_density;
-uniform vec4 cloud_shadow;
-uniform vec4 density_multiplier;
-uniform vec4 distance_multiplier;
-uniform vec4 max_y;
+uniform float haze_horizon;
+uniform float haze_density;
+uniform float cloud_shadow;
+uniform float density_multiplier;
+uniform float distance_multiplier;
+uniform float max_y;
 uniform vec4 glow;
 uniform float scene_light_strength;
 uniform mat3 env_mat;
@@ -161,13 +163,13 @@ void calcAtmospherics(vec3 inPositionEye, float ambFactor) {
 
 	//sunlight attenuation effect (hue and brightness) due to atmosphere
 	//this is used later for sunlight modulation at various altitudes
-	light_atten = (blue_density * 1.0 + vec4(haze_density.r) * 0.25) * (density_multiplier.x * max_y.x);
+	light_atten = (blue_density + vec4(haze_density * 0.25)) * (density_multiplier * max_y);
 		//I had thought blue_density and haze_density should have equal weighting,
 		//but attenuation due to haze_density tends to seem too strong
 
-	temp1 = blue_density + vec4(haze_density.r);
+	temp1 = blue_density + vec4(haze_density);
 	blue_weight = blue_density / temp1;
-	haze_weight = vec4(haze_density.r) / temp1;
+	haze_weight = vec4(haze_density) / temp1;
 
 	//(TERRAIN) compute sunlight from lightnorm only (for short rays like terrain)
 	temp2.y = max(0.0, tmpLightnorm.y);
@@ -175,12 +177,12 @@ void calcAtmospherics(vec3 inPositionEye, float ambFactor) {
 	sunlight *= exp( - light_atten * temp2.y);
 
 	// main atmospheric scattering line integral
-	temp2.z = Plen * density_multiplier.x;
+	temp2.z = Plen * density_multiplier;
 
 	// Transparency (-> temp1)
-	// ATI Bugfix -- can't store temp1*temp2.z*distance_multiplier.x in a variable because the ati
+	// ATI Bugfix -- can't store temp1*temp2.z*distance_multiplier in a variable because the ati
 	// compiler gets confused.
-	temp1 = exp(-temp1 * temp2.z * distance_multiplier.x);
+	temp1 = exp(-temp1 * temp2.z * distance_multiplier);
 
 	//final atmosphere attenuation factor
 	setAtmosAttenuation(temp1.rgb);
@@ -201,7 +203,7 @@ void calcAtmospherics(vec3 inPositionEye, float ambFactor) {
 	temp2.x += .25;
 	
 	//increase ambient when there are more clouds
-	vec4 tmpAmbient = ambient + (vec4(1.) - ambient) * cloud_shadow.x * 0.5;
+	vec4 tmpAmbient = ambient + (vec4(1.) - ambient) * cloud_shadow * 0.5;
 	
 	/*  decrease value and saturation (that in HSV, not HSL) for occluded areas
 	 * // for HSV color/geometry used here, see http://gimp-savvy.com/BOOK/index.html?node52.html
@@ -215,8 +217,8 @@ void calcAtmospherics(vec3 inPositionEye, float ambFactor) {
 
 	//haze color
 	setAdditiveColor(
-		vec3(blue_horizon * blue_weight * (sunlight*(1.-cloud_shadow.x) + tmpAmbient)
-	  + (haze_horizon.r * haze_weight) * (sunlight*(1.-cloud_shadow.x) * temp2.x
+		vec3(blue_horizon * blue_weight * (sunlight*(1.-cloud_shadow) + tmpAmbient)
+	  + (haze_horizon * haze_weight) * (sunlight*(1.-cloud_shadow) * temp2.x
 		  + tmpAmbient)));
 
 	//brightness of surface both sunlight and ambient
@@ -330,6 +332,6 @@ void main()
 		col = diffuse.rgb;
 	}
 		
-	gl_FragColor.rgb = col;
-	gl_FragColor.a = bloom;
+	frag_color.rgb = col;
+	frag_color.a = bloom;
 }
diff --git a/indra/newview/app_settings/shaders/class2/deferred/spotLightF.glsl b/indra/newview/app_settings/shaders/class2/deferred/spotLightF.glsl
index 31bd0c79da..99a277fbfc 100644
--- a/indra/newview/app_settings/shaders/class2/deferred/spotLightF.glsl
+++ b/indra/newview/app_settings/shaders/class2/deferred/spotLightF.glsl
@@ -26,7 +26,9 @@
 #extension GL_ARB_texture_rectangle : enable
 
 #ifdef DEFINE_GL_FRAGCOLOR
-out vec4 gl_FragColor;
+out vec4 frag_color;
+#else
+#define frag_color gl_FragColor
 #endif
 
 VARYING vec4 vertex_color;
@@ -201,6 +203,6 @@ void main()
 		}
 	}
 	
-	gl_FragColor.rgb = col;	
-	gl_FragColor.a = 0.0;
+	frag_color.rgb = col;	
+	frag_color.a = 0.0;
 }
diff --git a/indra/newview/app_settings/shaders/class2/deferred/sunLightF.glsl b/indra/newview/app_settings/shaders/class2/deferred/sunLightF.glsl
index 229c2f4b67..8c4ccf9cb3 100644
--- a/indra/newview/app_settings/shaders/class2/deferred/sunLightF.glsl
+++ b/indra/newview/app_settings/shaders/class2/deferred/sunLightF.glsl
@@ -26,7 +26,9 @@
 #extension GL_ARB_texture_rectangle : enable
 
 #ifdef DEFINE_GL_FRAGCOLOR
-out vec4 gl_FragColor;
+out vec4 frag_color;
+#else
+#define frag_color gl_FragColor
 #endif
 
 //class 2, shadows, no SSAO
@@ -129,11 +131,11 @@ void main()
 	
 	/*if (pos.z == 0.0) // do nothing for sky *FIX: REMOVE THIS IF/WHEN THE POSITION MAP IS BEING USED AS A STENCIL
 	{
-		gl_FragColor = vec4(0.0); // doesn't matter
+		frag_color = vec4(0.0); // doesn't matter
 		return;
 	}*/
 	
-	float shadow = 1.0;
+	float shadow = 0.0;
 	float dp_directional_light = max(0.0, dot(norm, sun_dir.xyz));
 
 	vec3 shadow_pos = pos.xyz + displace*norm;
@@ -152,32 +154,62 @@ void main()
 		{
 			vec4 lpos;
 			
-			if (spos.z < -shadow_clip.z)
+			vec4 near_split = shadow_clip*-0.75;
+			vec4 far_split = shadow_clip*-1.25;
+			vec4 transition_domain = near_split-far_split;
+			float weight = 0.0;
+
+			if (spos.z < near_split.z)
 			{
 				lpos = shadow_matrix[3]*spos;
 				lpos.xy *= shadow_res;
-				shadow = pcfShadow(shadowMap3, lpos, 0.25);
+
+				float w = 1.0;
+				w -= max(spos.z-far_split.z, 0.0)/transition_domain.z;
+				shadow += pcfShadow(shadowMap3, lpos, 0.25)*w;
+				weight += w;
 				shadow += max((pos.z+shadow_clip.z)/(shadow_clip.z-shadow_clip.w)*2.0-1.0, 0.0);
 			}
-			else if (spos.z < -shadow_clip.y)
+
+			if (spos.z < near_split.y && spos.z > far_split.z)
 			{
 				lpos = shadow_matrix[2]*spos;
 				lpos.xy *= shadow_res;
-				shadow = pcfShadow(shadowMap2, lpos, 0.5);
+
+				float w = 1.0;
+				w -= max(spos.z-far_split.y, 0.0)/transition_domain.y;
+				w -= max(near_split.z-spos.z, 0.0)/transition_domain.z;
+				shadow += pcfShadow(shadowMap2, lpos, 0.75)*w;
+				weight += w;
 			}
-			else if (spos.z < -shadow_clip.x)
+
+			if (spos.z < near_split.x && spos.z > far_split.y)
 			{
 				lpos = shadow_matrix[1]*spos;
 				lpos.xy *= shadow_res;
-				shadow = pcfShadow(shadowMap1, lpos, 0.75);
+
+				float w = 1.0;
+				w -= max(spos.z-far_split.x, 0.0)/transition_domain.x;
+				w -= max(near_split.y-spos.z, 0.0)/transition_domain.y;
+				shadow += pcfShadow(shadowMap1, lpos, 0.75)*w;
+				weight += w;
 			}
-			else
+
+			if (spos.z > far_split.x)
 			{
 				lpos = shadow_matrix[0]*spos;
 				lpos.xy *= shadow_res;
-				shadow = pcfShadow(shadowMap0, lpos, 1.0);
+				
+				float w = 1.0;
+				w -= max(near_split.x-spos.z, 0.0)/transition_domain.x;
+				
+				shadow += pcfShadow(shadowMap0, lpos, 1.0)*w;
+				weight += w;
 			}
 		
+
+			shadow /= weight;
+
 			// take the most-shadowed value out of these two:
 			//  * the blurred sun shadow in the light (shadow) map
 			//  * an unblurred dot product between the sun and this norm
@@ -198,19 +230,19 @@ void main()
 		shadow = 1.0;
 	}
 	
-	gl_FragColor[0] = shadow;
-	gl_FragColor[1] = 1.0;
+	frag_color[0] = shadow;
+	frag_color[1] = 1.0;
 	
 	spos = vec4(shadow_pos+norm*spot_shadow_offset, 1.0);
 	
 	//spotlight shadow 1
 	vec4 lpos = shadow_matrix[4]*spos;
-	gl_FragColor[2] = pcfShadow(shadowMap4, lpos, 0.8); 
+	frag_color[2] = pcfShadow(shadowMap4, lpos, 0.8); 
 	
 	//spotlight shadow 2
 	lpos = shadow_matrix[5]*spos;
-	gl_FragColor[3] = pcfShadow(shadowMap5, lpos, 0.8); 
+	frag_color[3] = pcfShadow(shadowMap5, lpos, 0.8); 
 
-	//gl_FragColor.rgb = pos.xyz;
-	//gl_FragColor.b = shadow;
+	//frag_color.rgb = pos.xyz;
+	//frag_color.b = shadow;
 }
diff --git a/indra/newview/app_settings/shaders/class2/deferred/sunLightSSAOF.glsl b/indra/newview/app_settings/shaders/class2/deferred/sunLightSSAOF.glsl
index 6b420833b9..02075a7687 100644
--- a/indra/newview/app_settings/shaders/class2/deferred/sunLightSSAOF.glsl
+++ b/indra/newview/app_settings/shaders/class2/deferred/sunLightSSAOF.glsl
@@ -25,7 +25,9 @@
 #extension GL_ARB_texture_rectangle : enable
 
 #ifdef DEFINE_GL_FRAGCOLOR
-out vec4 gl_FragColor;
+out vec4 frag_color;
+#else
+#define frag_color gl_FragColor
 #endif
 
 //class 2 -- shadows and SSAO
@@ -190,11 +192,11 @@ void main()
 	
 	/*if (pos.z == 0.0) // do nothing for sky *FIX: REMOVE THIS IF/WHEN THE POSITION MAP IS BEING USED AS A STENCIL
 	{
-		gl_FragColor = vec4(0.0); // doesn't matter
+		frag_color = vec4(0.0); // doesn't matter
 		return;
 	}*/
 	
-	float shadow = 1.0;
+	float shadow = 0.0;
 	float dp_directional_light = max(0.0, dot(norm, sun_dir.xyz));
 
 	vec3 shadow_pos = pos.xyz + displace*norm;
@@ -212,33 +214,63 @@ void main()
 		else
 		{
 			vec4 lpos;
-			
-			if (spos.z < -shadow_clip.z)
+
+			vec4 near_split = shadow_clip*-0.75;
+			vec4 far_split = shadow_clip*-1.25;
+			vec4 transition_domain = near_split-far_split;
+			float weight = 0.0;
+
+			if (spos.z < near_split.z)
 			{
 				lpos = shadow_matrix[3]*spos;
 				lpos.xy *= shadow_res;
-				shadow = pcfShadow(shadowMap3, lpos, 0.25);
+
+				float w = 1.0;
+				w -= max(spos.z-far_split.z, 0.0)/transition_domain.z;
+				shadow += pcfShadow(shadowMap3, lpos, 0.25)*w;
+				weight += w;
 				shadow += max((pos.z+shadow_clip.z)/(shadow_clip.z-shadow_clip.w)*2.0-1.0, 0.0);
 			}
-			else if (spos.z < -shadow_clip.y)
+
+			if (spos.z < near_split.y && spos.z > far_split.z)
 			{
 				lpos = shadow_matrix[2]*spos;
 				lpos.xy *= shadow_res;
-				shadow = pcfShadow(shadowMap2, lpos, 0.5);
+
+				float w = 1.0;
+				w -= max(spos.z-far_split.y, 0.0)/transition_domain.y;
+				w -= max(near_split.z-spos.z, 0.0)/transition_domain.z;
+				shadow += pcfShadow(shadowMap2, lpos, 0.75)*w;
+				weight += w;
 			}
-			else if (spos.z < -shadow_clip.x)
+
+			if (spos.z < near_split.x && spos.z > far_split.y)
 			{
 				lpos = shadow_matrix[1]*spos;
 				lpos.xy *= shadow_res;
-				shadow = pcfShadow(shadowMap1, lpos, 0.75);
+
+				float w = 1.0;
+				w -= max(spos.z-far_split.x, 0.0)/transition_domain.x;
+				w -= max(near_split.y-spos.z, 0.0)/transition_domain.y;
+				shadow += pcfShadow(shadowMap1, lpos, 0.75)*w;
+				weight += w;
 			}
-			else
+
+			if (spos.z > far_split.x)
 			{
 				lpos = shadow_matrix[0]*spos;
 				lpos.xy *= shadow_res;
-				shadow = pcfShadow(shadowMap0, lpos, 1.0);
+				
+				float w = 1.0;
+				w -= max(near_split.x-spos.z, 0.0)/transition_domain.x;
+				
+				shadow += pcfShadow(shadowMap0, lpos, 1.0)*w;
+				weight += w;
 			}
 		
+
+			shadow /= weight;
+
 			// take the most-shadowed value out of these two:
 			//  * the blurred sun shadow in the light (shadow) map
 			//  * an unblurred dot product between the sun and this norm
@@ -259,19 +291,19 @@ void main()
 		shadow = 1.0;
 	}
 	
-	gl_FragColor[0] = shadow;
-	gl_FragColor[1] = calcAmbientOcclusion(pos, norm);
+	frag_color[0] = shadow;
+	frag_color[1] = calcAmbientOcclusion(pos, norm);
 	
 	spos = vec4(shadow_pos+norm*spot_shadow_offset, 1.0);
 	
 	//spotlight shadow 1
 	vec4 lpos = shadow_matrix[4]*spos;
-	gl_FragColor[2] = pcfShadow(shadowMap4, lpos, 0.8); 
+	frag_color[2] = pcfShadow(shadowMap4, lpos, 0.8); 
 	
 	//spotlight shadow 2
 	lpos = shadow_matrix[5]*spos;
-	gl_FragColor[3] = pcfShadow(shadowMap5, lpos, 0.8); 
+	frag_color[3] = pcfShadow(shadowMap5, lpos, 0.8); 
 
-	//gl_FragColor.rgb = pos.xyz;
-	//gl_FragColor.b = shadow;
+	//frag_color.rgb = pos.xyz;
+	//frag_color.b = shadow;
 }
diff --git a/indra/newview/app_settings/shaders/class2/windlight/atmosphericsV.glsl b/indra/newview/app_settings/shaders/class2/windlight/atmosphericsV.glsl
index 6a83be1426..da3d922017 100644
--- a/indra/newview/app_settings/shaders/class2/windlight/atmosphericsV.glsl
+++ b/indra/newview/app_settings/shaders/class2/windlight/atmosphericsV.glsl
@@ -47,12 +47,12 @@ uniform vec4 sunlight_color;
 uniform vec4 ambient;
 uniform vec4 blue_horizon;
 uniform vec4 blue_density;
-uniform vec4 haze_horizon;
-uniform vec4 haze_density;
-uniform vec4 cloud_shadow;
-uniform vec4 density_multiplier;
-uniform vec4 distance_multiplier;
-uniform vec4 max_y;
+uniform float haze_horizon;
+uniform float haze_density;
+uniform float cloud_shadow;
+uniform float density_multiplier;
+uniform float distance_multiplier;
+uniform float max_y;
 uniform vec4 glow;
 
 void calcAtmospherics(vec3 inPositionEye) {
@@ -61,8 +61,8 @@ void calcAtmospherics(vec3 inPositionEye) {
 	setPositionEye(P);
 	
 	//(TERRAIN) limit altitude
-	if (P.y > max_y.x) P *= (max_y.x / P.y);
-	if (P.y < -max_y.x) P *= (-max_y.x / P.y);
+	if (P.y > max_y) P *= (max_y / P.y);
+	if (P.y < -max_y) P *= (-max_y / P.y);
 
 	vec3 tmpLightnorm = lightnorm.xyz;
 
@@ -78,13 +78,13 @@ void calcAtmospherics(vec3 inPositionEye) {
 
 	//sunlight attenuation effect (hue and brightness) due to atmosphere
 	//this is used later for sunlight modulation at various altitudes
-	light_atten = (blue_density * 1.0 + vec4(haze_density.r) * 0.25) * (density_multiplier.x * max_y.x);
+	light_atten = (blue_density + vec4(haze_density * 0.25)) * (density_multiplier * max_y);
 		//I had thought blue_density and haze_density should have equal weighting,
 		//but attenuation due to haze_density tends to seem too strong
 
-	temp1 = blue_density + vec4(haze_density.r);
+	temp1 = blue_density + vec4(haze_density);
 	blue_weight = blue_density / temp1;
-	haze_weight = vec4(haze_density.r) / temp1;
+	haze_weight = vec4(haze_density) / temp1;
 
 	//(TERRAIN) compute sunlight from lightnorm only (for short rays like terrain)
 	temp2.y = max(0.0, tmpLightnorm.y);
@@ -92,12 +92,12 @@ void calcAtmospherics(vec3 inPositionEye) {
 	sunlight *= exp( - light_atten * temp2.y);
 
 	// main atmospheric scattering line integral
-	temp2.z = Plen * density_multiplier.x;
+	temp2.z = Plen * density_multiplier;
 
 	// Transparency (-> temp1)
-	// ATI Bugfix -- can't store temp1*temp2.z*distance_multiplier.x in a variable because the ati
+	// ATI Bugfix -- can't store temp1*temp2.z*distance_multiplier in a variable because the ati
 	// compiler gets confused.
-	temp1 = exp(-temp1 * temp2.z * distance_multiplier.x);
+	temp1 = exp(-temp1 * temp2.z * distance_multiplier);
 
 	//final atmosphere attenuation factor
 	setAtmosAttenuation(temp1.rgb);
@@ -122,12 +122,12 @@ void calcAtmospherics(vec3 inPositionEye) {
 
 
 	//increase ambient when there are more clouds
-	vec4 tmpAmbient = ambient + (vec4(1.) - ambient) * cloud_shadow.x * 0.5;
+	vec4 tmpAmbient = ambient + (vec4(1.) - ambient) * cloud_shadow * 0.5;
 
 	//haze color
 	setAdditiveColor(
-		vec3(blue_horizon * blue_weight * (sunlight*(1.-cloud_shadow.x) + tmpAmbient)
-	  + (haze_horizon.r * haze_weight) * (sunlight*(1.-cloud_shadow.x) * temp2.x
+		vec3(blue_horizon * blue_weight * (sunlight*(1.-cloud_shadow) + tmpAmbient)
+	  + (haze_horizon * haze_weight) * (sunlight*(1.-cloud_shadow) * temp2.x
 		  + tmpAmbient)));
 
 	//brightness of surface both sunlight and ambient
diff --git a/indra/newview/app_settings/shaders/class2/windlight/cloudsF.glsl b/indra/newview/app_settings/shaders/class2/windlight/cloudsF.glsl
index 4ab06c6e21..96c70651b1 100644
--- a/indra/newview/app_settings/shaders/class2/windlight/cloudsF.glsl
+++ b/indra/newview/app_settings/shaders/class2/windlight/cloudsF.glsl
@@ -24,7 +24,9 @@
  */
  
 #ifdef DEFINE_GL_FRAGCOLOR
-out vec4 gl_FragColor;
+out vec4 frag_color;
+#else
+#define frag_color gl_FragColor
 #endif
 
 /////////////////////////////////////////////////////////////////////////
@@ -96,7 +98,7 @@ void main()
 	color *= 2.;
 
 	/// Gamma correct for WL (soft clip effect).
-	gl_FragColor.rgb = scaleSoftClip(color.rgb);
-	gl_FragColor.a = alpha1;
+	frag_color.rgb = scaleSoftClip(color.rgb);
+	frag_color.a = alpha1;
 }
 
diff --git a/indra/newview/app_settings/shaders/class2/windlight/cloudsV.glsl b/indra/newview/app_settings/shaders/class2/windlight/cloudsV.glsl
index c5bb52169c..c1dd45cd67 100644
--- a/indra/newview/app_settings/shaders/class2/windlight/cloudsV.glsl
+++ b/indra/newview/app_settings/shaders/class2/windlight/cloudsV.glsl
@@ -49,18 +49,18 @@ uniform vec4 sunlight_color;
 uniform vec4 ambient;
 uniform vec4 blue_horizon;
 uniform vec4 blue_density;
-uniform vec4 haze_horizon;
-uniform vec4 haze_density;
+uniform float haze_horizon;
+uniform float haze_density;
 
-uniform vec4 cloud_shadow;
-uniform vec4 density_multiplier;
-uniform vec4 max_y;
+uniform float cloud_shadow;
+uniform float density_multiplier;
+uniform float max_y;
 
 uniform vec4 glow;
 
 uniform vec4 cloud_color;
 
-uniform vec4 cloud_scale;
+uniform float cloud_scale;
 
 void main()
 {
@@ -76,7 +76,7 @@ void main()
 	// Set altitude
 	if (P.y > 0.)
 	{
-		P *= (max_y.x / P.y);
+		P *= (max_y / P.y);
 	}
 	else
 	{
@@ -98,12 +98,12 @@ void main()
 
 	// Sunlight attenuation effect (hue and brightness) due to atmosphere
 	// this is used later for sunlight modulation at various altitudes
-	light_atten = (blue_density * 1.0 + haze_density.x * 0.25) * (density_multiplier.x * max_y.x);
+	light_atten = (blue_density + vec4(haze_density * 0.25)) * (density_multiplier * max_y);
 
 	// Calculate relative weights
-	temp1 = blue_density + haze_density.x;
+	temp1 = blue_density + haze_density;
 	blue_weight = blue_density / temp1;
-	haze_weight = haze_density.x / temp1;
+	haze_weight = haze_density / temp1;
 
 	// Compute sunlight from P & lightnorm (for long rays like sky)
 	temp2.y = max(0., max(0., Pn.y) * 1.0 + lightnorm.y );
@@ -111,7 +111,7 @@ void main()
 	sunlight *= exp( - light_atten * temp2.y);
 
 	// Distance
-	temp2.z = Plen * density_multiplier.x;
+	temp2.z = Plen * density_multiplier;
 
 	// Transparency (-> temp1)
 	// ATI Bugfix -- can't store temp1*temp2.z in a variable because the ati
@@ -135,14 +135,14 @@ void main()
 
 	// Increase ambient when there are more clouds
 	vec4 tmpAmbient = ambient;
-	tmpAmbient += (1. - tmpAmbient) * cloud_shadow.x * 0.5; 
+	tmpAmbient += (1. - tmpAmbient) * cloud_shadow * 0.5; 
 
 	// Dim sunlight by cloud shadow percentage
-	sunlight *= (1. - cloud_shadow.x);
+	sunlight *= (1. - cloud_shadow);
 
 	// Haze color below cloud
 	vec4 additiveColorBelowCloud = (	  blue_horizon * blue_weight * (sunlight + tmpAmbient)
-				+ (haze_horizon.r * haze_weight) * (sunlight * temp2.x + tmpAmbient)
+				+ (haze_horizon * haze_weight) * (sunlight * temp2.x + tmpAmbient)
 			 );	
 
 	// CLOUDS
@@ -163,13 +163,13 @@ void main()
 	vec4 oHazeColorBelowCloud = additiveColorBelowCloud * (1. - temp1);
 
 	// Make a nice cloud density based on the cloud_shadow value that was passed in.
-	vary_CloudDensity = 2. * (cloud_shadow.x - 0.25);
+	vary_CloudDensity = 2. * (cloud_shadow - 0.25);
 
 
 	// Texture coords
 	vary_texcoord0 = texcoord0;
 	vary_texcoord0.xy -= 0.5;
-	vary_texcoord0.xy /= cloud_scale.x;
+	vary_texcoord0.xy /= cloud_scale;
 	vary_texcoord0.xy += 0.5;
 
 	vary_texcoord1 = vary_texcoord0;
diff --git a/indra/newview/app_settings/shaders/class2/windlight/skyF.glsl b/indra/newview/app_settings/shaders/class2/windlight/skyF.glsl
index c9d96b2cf4..e2a2367626 100644
--- a/indra/newview/app_settings/shaders/class2/windlight/skyF.glsl
+++ b/indra/newview/app_settings/shaders/class2/windlight/skyF.glsl
@@ -24,7 +24,9 @@
  */
  
 #ifdef DEFINE_GL_FRAGCOLOR
-out vec4 gl_FragColor;
+out vec4 frag_color;
+#else
+#define frag_color gl_FragColor
 #endif
 
 /////////////////////////////////////////////////////////////////////////
@@ -57,7 +59,7 @@ void main()
 	color *= 2.;
 
 	/// Gamma correct for WL (soft clip effect).
-	gl_FragColor.rgb = scaleSoftClip(color.rgb);
-	gl_FragColor.a = 1.0;
+	frag_color.rgb = scaleSoftClip(color.rgb);
+	frag_color.a = 1.0;
 }
 
diff --git a/indra/newview/app_settings/shaders/class2/windlight/skyV.glsl b/indra/newview/app_settings/shaders/class2/windlight/skyV.glsl
index 46773cf89f..3788ddaf2d 100644
--- a/indra/newview/app_settings/shaders/class2/windlight/skyV.glsl
+++ b/indra/newview/app_settings/shaders/class2/windlight/skyV.glsl
@@ -42,19 +42,17 @@ uniform vec4 sunlight_color;
 uniform vec4 ambient;
 uniform vec4 blue_horizon;
 uniform vec4 blue_density;
-uniform vec4 haze_horizon;
-uniform vec4 haze_density;
+uniform float haze_horizon;
+uniform float haze_density;
 
-uniform vec4 cloud_shadow;
-uniform vec4 density_multiplier;
-uniform vec4 max_y;
+uniform float cloud_shadow;
+uniform float density_multiplier;
+uniform float max_y;
 
 uniform vec4 glow;
 
 uniform vec4 cloud_color;
 
-uniform vec4 cloud_scale;
-
 void main()
 {
 
@@ -68,7 +66,7 @@ void main()
 	// Set altitude
 	if (P.y > 0.)
 	{
-		P *= (max_y.x / P.y);
+		P *= (max_y / P.y);
 	}
 	else
 	{
@@ -87,15 +85,14 @@ void main()
 	vec4 sunlight = sunlight_color;
 	vec4 light_atten;
 
-
 	// Sunlight attenuation effect (hue and brightness) due to atmosphere
 	// this is used later for sunlight modulation at various altitudes
-	light_atten = (blue_density * 1.0 + haze_density.x * 0.25) * (density_multiplier.x * max_y.x);
+	light_atten = (blue_density + vec4(haze_density * 0.25)) * (density_multiplier * max_y);
 
 	// Calculate relative weights
-	temp1 = blue_density + haze_density.x;
+	temp1 = blue_density + haze_density;
 	blue_weight = blue_density / temp1;
-	haze_weight = haze_density.x / temp1;
+	haze_weight = haze_density / temp1;
 
 	// Compute sunlight from P & lightnorm (for long rays like sky)
 	temp2.y = max(0., max(0., Pn.y) * 1.0 + lightnorm.y );
@@ -103,7 +100,7 @@ void main()
 	sunlight *= exp( - light_atten * temp2.y);
 
 	// Distance
-	temp2.z = Plen * density_multiplier.x;
+	temp2.z = Plen * density_multiplier;
 
 	// Transparency (-> temp1)
 	// ATI Bugfix -- can't store temp1*temp2.z in a variable because the ati
@@ -128,20 +125,20 @@ void main()
 
 	// Haze color above cloud
 	vary_HazeColor = (	  blue_horizon * blue_weight * (sunlight + ambient)
-				+ (haze_horizon.r * haze_weight) * (sunlight * temp2.x + ambient)
+				+ (haze_horizon * haze_weight) * (sunlight * temp2.x + ambient)
 			 );	
 
 
 	// Increase ambient when there are more clouds
 	vec4 tmpAmbient = ambient;
-	tmpAmbient += (1. - tmpAmbient) * cloud_shadow.x * 0.5; 
+	tmpAmbient += (1. - tmpAmbient) * cloud_shadow * 0.5; 
 
 	// Dim sunlight by cloud shadow percentage
-	sunlight *= (1. - cloud_shadow.x);
+	sunlight *= (1. - cloud_shadow);
 
 	// Haze color below cloud
 	vec4 additiveColorBelowCloud = (	  blue_horizon * blue_weight * (sunlight + tmpAmbient)
-				+ (haze_horizon.r * haze_weight) * (sunlight * temp2.x + tmpAmbient)
+				+ (haze_horizon * haze_weight) * (sunlight * temp2.x + tmpAmbient)
 			 );	
 
 	// Final atmosphere additive
diff --git a/indra/newview/featuretable.txt b/indra/newview/featuretable.txt
index 0f33d40ac3..99721c3638 100644
--- a/indra/newview/featuretable.txt
+++ b/indra/newview/featuretable.txt
@@ -42,7 +42,6 @@ RenderGamma					1	0
 RenderGlowResolutionPow		1	9
 RenderGround				1	1
 RenderMaxPartCount			1	8192
-RenderNightBrightness		1	1.0
 RenderObjectBump			1	1
 RenderLocalLights			1	1
 RenderReflectionDetail		1	4
@@ -62,6 +61,7 @@ WLSkyDetail					1	128
 Disregard128DefaultDrawDistance	1	1
 Disregard96DefaultDrawDistance	1	1
 RenderTextureMemoryMultiple		1	1.0
+RenderCompressTextures		1	1
 RenderShaderLightingMaxLevel	1	3
 RenderDeferred				1	1
 RenderDeferredSSAO			1	1
@@ -224,6 +224,12 @@ list Class3
 RenderVBOEnable				1	1
 
 //
+// VRAM > 512MB
+//
+list VRAMGT512
+RenderCompressTextures		1	0
+
+//
 // No Pixel Shaders available
 //
 list NoPixelShaders
diff --git a/indra/newview/featuretable_linux.txt b/indra/newview/featuretable_linux.txt
index 8142311a55..289fd2ffbe 100644
--- a/indra/newview/featuretable_linux.txt
+++ b/indra/newview/featuretable_linux.txt
@@ -43,7 +43,6 @@ RenderGlowResolutionPow		1	9
 RenderGround				1	1
 RenderLocalLights			1	1
 RenderMaxPartCount			1	8192
-RenderNightBrightness		1	1.0
 RenderObjectBump			1	1
 RenderReflectionDetail		1	4
 RenderTerrainDetail			1	1
@@ -62,6 +61,7 @@ WLSkyDetail					1	128
 Disregard128DefaultDrawDistance	1	1
 Disregard96DefaultDrawDistance	1	1
 RenderTextureMemoryMultiple		1	1.0
+RenderCompressTextures		1	1
 RenderShaderLightingMaxLevel		1	3
 RenderDeferred				1	1
 RenderDeferredSSAO			1	1
@@ -221,6 +221,12 @@ list Class3
 RenderVBOEnable				1	1
 
 //
+// VRAM > 512MB
+//
+list VRAMGT512
+RenderCompressTextures		1	0
+
+//
 // No Pixel Shaders available
 //
 list NoPixelShaders
diff --git a/indra/newview/featuretable_mac.txt b/indra/newview/featuretable_mac.txt
index 942c043081..3fcfb411d2 100644
--- a/indra/newview/featuretable_mac.txt
+++ b/indra/newview/featuretable_mac.txt
@@ -43,7 +43,6 @@ RenderGlowResolutionPow			1	9
 RenderGround					1	1
 RenderLocalLights				1	1
 RenderMaxPartCount				1	8192
-RenderNightBrightness			1	1.0
 RenderObjectBump				1	1
 RenderReflectionDetail			1	4
 RenderTerrainDetail				1	1
@@ -62,6 +61,7 @@ WLSkyDetail						1	128
 Disregard128DefaultDrawDistance	1	1
 Disregard96DefaultDrawDistance	1	1
 RenderTextureMemoryMultiple		1	0.5
+RenderCompressTextures			1	1
 RenderShaderLightingMaxLevel	1	3
 RenderDeferred				1	1
 RenderDeferredSSAO			1	1
@@ -249,6 +249,12 @@ RenderDeferredSSAO			0	0
 RenderShadowDetail			0	0
 
 //
+// VRAM > 512MB
+//
+list VRAMGT512
+RenderCompressTextures		1	0
+
+//
 // "Default" setups for safe, low, medium, high
 //
 list safe
@@ -287,6 +293,7 @@ RenderObjectBump			0	0
 list OpenGLPre15
 RenderVBOEnable				1	0
 
+
 list TexUnit8orLess
 RenderDeferredSSAO			0	0
 
diff --git a/indra/newview/featuretable_xp.txt b/indra/newview/featuretable_xp.txt
index 278d601860..f0f64e898e 100644
--- a/indra/newview/featuretable_xp.txt
+++ b/indra/newview/featuretable_xp.txt
@@ -43,7 +43,6 @@ RenderGlowResolutionPow		1	9
 RenderGround				1	1
 RenderLocalLights			1	1
 RenderMaxPartCount			1	8192
-RenderNightBrightness		1	1.0
 RenderObjectBump			1	1
 RenderReflectionDetail		1	4
 RenderTerrainDetail			1	1
@@ -62,6 +61,7 @@ WLSkyDetail					1	128
 Disregard128DefaultDrawDistance	1	1
 Disregard96DefaultDrawDistance	1	1
 RenderTextureMemoryMultiple		1	1.0
+RenderCompressTextures		1	1
 RenderShaderLightingMaxLevel	1	3
 RenderDeferred				1	0
 RenderDeferredSSAO			1	0
@@ -223,6 +223,12 @@ list Class3
 RenderVBOEnable				1	1
 
 //
+// VRAM > 512MB
+//
+list VRAMGT512
+RenderCompressTextures		1	0
+
+//
 // No Pixel Shaders available
 //
 list NoPixelShaders
diff --git a/indra/newview/llagent.cpp b/indra/newview/llagent.cpp
index 54ad3cd187..ab9b5ff436 100755
--- a/indra/newview/llagent.cpp
+++ b/indra/newview/llagent.cpp
@@ -3314,6 +3314,7 @@ void LLAgent::processAgentCachedTextureResponse(LLMessageSystem *mesgsys, void *
 	}
 
 	llinfos << "Received cached texture response for " << num_results << " textures." << llendl;
+	gAgentAvatarp->outputRezTiming("Fetched agent wearables textures from cache. Will now load them");
 
 	gAgentAvatarp->updateMeshTextures();
 
diff --git a/indra/newview/llagentwearables.cpp b/indra/newview/llagentwearables.cpp
index 13b62cb019..09305a5b4d 100644
--- a/indra/newview/llagentwearables.cpp
+++ b/indra/newview/llagentwearables.cpp
@@ -185,6 +185,7 @@ void LLAgentWearables::setAvatarObject(LLVOAvatarSelf *avatar)
 { 
 	if (avatar)
 	{
+		avatar->outputRezTiming("Sending wearables request");
 		sendAgentWearablesRequest();
 	}
 }
@@ -949,6 +950,11 @@ void LLAgentWearables::processAgentInitialWearablesUpdate(LLMessageSystem* mesgs
 	if (mInitialWearablesUpdateReceived)
 		return;
 
+	if (isAgentAvatarValid())
+	{
+		gAgentAvatarp->outputRezTiming("Received initial wearables update");
+	}
+
 	// notify subscribers that wearables started loading. See EXT-7777
 	// *TODO: find more proper place to not be called from deprecated method.
 	// Seems such place is found: LLInitialWearablesFetch::processContents()
@@ -1619,6 +1625,11 @@ void LLAgentWearables::queryWearableCache()
 	//VWR-22113: gAgent.getRegion() can return null if invalid, seen here on logout
 	if(gAgent.getRegion())
 	{
+		if (isAgentAvatarValid())
+		{
+			gAgentAvatarp->outputRezTiming("Fetching textures from cache");
+		}
+
 		llinfos << "Requesting texture cache entry for " << num_queries << " baked textures" << llendl;
 		gMessageSystem->sendReliable(gAgent.getRegion()->getHost());
 		gAgentQueryManager.mNumPendingQueries++;
diff --git a/indra/newview/llagentwearablesfetch.cpp b/indra/newview/llagentwearablesfetch.cpp
index 4097ff707c..8cba54347e 100644
--- a/indra/newview/llagentwearablesfetch.cpp
+++ b/indra/newview/llagentwearablesfetch.cpp
@@ -87,6 +87,10 @@ public:
 LLInitialWearablesFetch::LLInitialWearablesFetch(const LLUUID& cof_id) :
 	LLInventoryFetchDescendentsObserver(cof_id)
 {
+	if (isAgentAvatarValid())
+	{
+		gAgentAvatarp->outputRezTiming("Initial wearables fetch started");
+	}
 }
 
 LLInitialWearablesFetch::~LLInitialWearablesFetch()
@@ -101,6 +105,10 @@ void LLInitialWearablesFetch::done()
 	// idle tick instead.
 	gInventory.removeObserver(this);
 	doOnIdleOneTime(boost::bind(&LLInitialWearablesFetch::processContents,this));
+	if (isAgentAvatarValid())
+	{
+		gAgentAvatarp->outputRezTiming("Initial wearables fetch done");
+	}
 }
 
 void LLInitialWearablesFetch::add(InitialWearableData &data)
diff --git a/indra/newview/llagentwearablesfetch.h b/indra/newview/llagentwearablesfetch.h
index 7dafab4a33..bedc445c0e 100644
--- a/indra/newview/llagentwearablesfetch.h
+++ b/indra/newview/llagentwearablesfetch.h
@@ -40,6 +40,8 @@
 //--------------------------------------------------------------------
 class LLInitialWearablesFetch : public LLInventoryFetchDescendentsObserver
 {
+	LOG_CLASS(LLInitialWearablesFetch);
+
 public:
 	LLInitialWearablesFetch(const LLUUID& cof_id);
 	~LLInitialWearablesFetch();
diff --git a/indra/newview/llappearancemgr.cpp b/indra/newview/llappearancemgr.cpp
index 663257042e..33f5373d7e 100644
--- a/indra/newview/llappearancemgr.cpp
+++ b/indra/newview/llappearancemgr.cpp
@@ -268,6 +268,8 @@ struct LLFoundData
 	
 class LLWearableHoldingPattern
 {
+	LOG_CLASS(LLWearableHoldingPattern);
+
 public:
 	LLWearableHoldingPattern();
 	~LLWearableHoldingPattern();
@@ -436,6 +438,11 @@ void LLWearableHoldingPattern::checkMissingWearables()
 
 void LLWearableHoldingPattern::onAllComplete()
 {
+	if (isAgentAvatarValid())
+	{
+		gAgentAvatarp->outputRezTiming("Agent wearables fetch complete");
+	}
+
 	if (!isMostRecent())
 	{
 		llwarns << "skipping because LLWearableHolding pattern is invalid (superceded by later outfit request)" << llendl;
@@ -2363,6 +2370,8 @@ void LLAppearanceMgr::autopopulateOutfits()
 // Handler for anything that's deferred until avatar de-clouds.
 void LLAppearanceMgr::onFirstFullyVisible()
 {
+	gAgentAvatarp->outputRezTiming("Avatar fully loaded");
+	gAgentAvatarp->reportAvatarRezTime();
 	gAgentAvatarp->debugAvatarVisible();
 
 	// The auto-populate is failing at the point of generating outfits
diff --git a/indra/newview/llappviewer.cpp b/indra/newview/llappviewer.cpp
index 49fbdbf1df..5941dbc126 100644
--- a/indra/newview/llappviewer.cpp
+++ b/indra/newview/llappviewer.cpp
@@ -528,6 +528,7 @@ static void settings_to_globals()
 	LLRender::sGLCoreProfile = gSavedSettings.getBOOL("RenderGLCoreProfile");
 
 	LLImageGL::sGlobalUseAnisotropic	= gSavedSettings.getBOOL("RenderAnisotropic");
+	LLImageGL::sCompressTextures		= gSavedSettings.getBOOL("RenderCompressTextures");
 	LLVOVolume::sLODFactor				= gSavedSettings.getF32("RenderVolumeLODFactor");
 	LLVOVolume::sDistanceFactor			= 1.f-LLVOVolume::sLODFactor * 0.1f;
 	LLVolumeImplFlexible::sUpdateFactor = gSavedSettings.getF32("RenderFlexTimeFactor");
@@ -545,7 +546,7 @@ static void settings_to_globals()
 	gAgentPilot.setNumRuns(gSavedSettings.getS32("StatsNumRuns"));
 	gAgentPilot.setQuitAfterRuns(gSavedSettings.getBOOL("StatsQuitAfterRuns"));
 	gAgent.setHideGroupTitle(gSavedSettings.getBOOL("RenderHideGroupTitle"));
-
+		
 	gDebugWindowProc = gSavedSettings.getBOOL("DebugWindowProc");
 	gShowObjectUpdates = gSavedSettings.getBOOL("ShowObjectUpdates");
 	LLWorldMapView::sMapScale = gSavedSettings.getF32("MapScale");
@@ -1487,6 +1488,9 @@ void LLAppViewer::flushVFSIO()
 
 bool LLAppViewer::cleanup()
 {
+	//ditch LLVOAvatarSelf instance
+	gAgentAvatarp = NULL;
+
 	// workaround for DEV-35406 crash on shutdown
 	LLEventPumps::instance().reset();
 
diff --git a/indra/newview/lldrawable.cpp b/indra/newview/lldrawable.cpp
index debac9dcbf..21b21c152a 100644
--- a/indra/newview/lldrawable.cpp
+++ b/indra/newview/lldrawable.cpp
@@ -1077,6 +1077,7 @@ BOOL LLDrawable::isVisible() const
 LLSpatialBridge::LLSpatialBridge(LLDrawable* root, BOOL render_by_group, U32 data_mask)
 : LLSpatialPartition(data_mask, render_by_group, GL_STREAM_DRAW_ARB)
 {
+	mBridge = this;
 	mDrawable = root;
 	root->setSpatialBridge(this);
 	
@@ -1105,6 +1106,15 @@ LLSpatialBridge::~LLSpatialBridge()
 	{
 		group->mSpatialPartition->remove(this, group);
 	}
+
+	//delete octree here so listeners will still be able to access bridge specific state
+	destroyTree();
+}
+
+void LLSpatialBridge::destroyTree()
+{
+	delete mOctree;
+	mOctree = NULL;
 }
 
 void LLSpatialBridge::updateSpatialExtents()
diff --git a/indra/newview/lldrawpool.h b/indra/newview/lldrawpool.h
index 5a2981e749..64774d06df 100644
--- a/indra/newview/lldrawpool.h
+++ b/indra/newview/lldrawpool.h
@@ -133,6 +133,7 @@ public:
 		PASS_ALPHA,
 		PASS_ALPHA_MASK,
 		PASS_FULLBRIGHT_ALPHA_MASK,
+		PASS_ALPHA_INVISIBLE,
 		NUM_RENDER_TYPES,
 	};
 
diff --git a/indra/newview/lldrawpoolalpha.cpp b/indra/newview/lldrawpoolalpha.cpp
index ddb7d3ceeb..5b62dbc560 100644
--- a/indra/newview/lldrawpoolalpha.cpp
+++ b/indra/newview/lldrawpoolalpha.cpp
@@ -337,6 +337,7 @@ void LLDrawPoolAlpha::render(S32 pass)
 
 		pushBatches(LLRenderPass::PASS_ALPHA_MASK, LLVertexBuffer::MAP_VERTEX | LLVertexBuffer::MAP_TEXCOORD0, FALSE);
 		pushBatches(LLRenderPass::PASS_FULLBRIGHT_ALPHA_MASK, LLVertexBuffer::MAP_VERTEX | LLVertexBuffer::MAP_TEXCOORD0, FALSE);
+		pushBatches(LLRenderPass::PASS_ALPHA_INVISIBLE, LLVertexBuffer::MAP_VERTEX | LLVertexBuffer::MAP_TEXCOORD0, FALSE);
 
 		if(shaders) 
 		{
diff --git a/indra/newview/lldrawpoolavatar.cpp b/indra/newview/lldrawpoolavatar.cpp
index 55b314fbb1..0103373fd2 100644
--- a/indra/newview/lldrawpoolavatar.cpp
+++ b/indra/newview/lldrawpoolavatar.cpp
@@ -1138,6 +1138,8 @@ void LLDrawPoolAvatar::renderAvatars(LLVOAvatar* single_avatar, S32 pass)
 		return;
 	}
 
+	llassert(LLPipeline::sImpostorRender || !avatarp->isVisuallyMuted());
+
 	/*if (single_avatar && avatarp->mSpecialRenderMode >= 1) // 1=anim preview, 2=image preview,  3=morph view
 	{
 		gPipeline.enableLightsAvatarEdit(LLColor4(.5f, .5f, .5f, 1.f));
@@ -1285,7 +1287,7 @@ void LLDrawPoolAvatar::updateRiggedFaceVertexBuffer(LLVOAvatar* avatar, LLFace*
 		face->setGeomIndex(0);
 		face->setIndicesIndex(0);
 		
-		if (buffer.isNull() || buffer->getTypeMask() != data_mask)
+		if (buffer.isNull() || buffer->getTypeMask() != data_mask || !buffer->isWriteable())
 		{ //make a new buffer
 			if (sShaderLevel > 0)
 			{
@@ -1319,7 +1321,9 @@ void LLDrawPoolAvatar::updateRiggedFaceVertexBuffer(LLVOAvatar* avatar, LLFace*
 		LLMatrix3 mat_normal(mat3);				
 
 		//let getGeometryVolume know if alpha should override shiny
-		if (face->getFaceColor().mV[3] < 1.f)
+		U32 type = gPipeline.getPoolTypeFromTE(face->getTextureEntry(), face->getTexture());
+
+		if (type == LLDrawPool::POOL_ALPHA)
 		{
 			face->setPoolType(LLDrawPool::POOL_ALPHA);
 		}
diff --git a/indra/newview/lldrawpoolbump.cpp b/indra/newview/lldrawpoolbump.cpp
index b58efe62ab..6f71e6ebc8 100644
--- a/indra/newview/lldrawpoolbump.cpp
+++ b/indra/newview/lldrawpoolbump.cpp
@@ -1341,8 +1341,7 @@ void LLBumpImageList::onSourceLoaded( BOOL success, LLViewerTexture *src_vi, LLI
 			// immediately assign bump to a global smart pointer in case some local smart pointer
 			// accidentally releases it.
 			LLPointer<LLViewerTexture> bump = LLViewerTextureManager::getLocalTexture( TRUE );
-			
-			
+
 			if (!LLPipeline::sRenderDeferred)
 			{
 				LLFastTimer t(FTM_BUMP_SOURCE_CREATE);
@@ -1351,6 +1350,10 @@ void LLBumpImageList::onSourceLoaded( BOOL success, LLViewerTexture *src_vi, LLI
 			}
 			else 
 			{ //convert to normal map
+				
+				//disable compression on normal maps to prevent errors below
+				bump->getGLTexture()->setAllowCompression(false);
+
 				{
 					LLFastTimer t(FTM_BUMP_SOURCE_CREATE);
 					bump->setExplicitFormat(GL_RGBA8, GL_ALPHA);
diff --git a/indra/newview/lldriverparam.cpp b/indra/newview/lldriverparam.cpp
index 8f47d3c5e5..64eb11fc9b 100644
--- a/indra/newview/lldriverparam.cpp
+++ b/indra/newview/lldriverparam.cpp
@@ -139,7 +139,7 @@ void LLDriverParamInfo::toStream(std::ostream &out)
 			}
 			else
 			{
-				llwarns << "could not get parameter " << driven.mDrivenID << " from avatar " << gAgentAvatarp << " for driver parameter " << getID() << llendl;
+				llwarns << "could not get parameter " << driven.mDrivenID << " from avatar " << gAgentAvatarp.get() << " for driver parameter " << getID() << llendl;
 			}
 			out << std::endl;
 		}
diff --git a/indra/newview/lldynamictexture.cpp b/indra/newview/lldynamictexture.cpp
index 5d6081a35c..a93b2b71de 100644
--- a/indra/newview/lldynamictexture.cpp
+++ b/indra/newview/lldynamictexture.cpp
@@ -125,8 +125,16 @@ BOOL LLViewerDynamicTexture::render()
 //-----------------------------------------------------------------------------
 void LLViewerDynamicTexture::preRender(BOOL clear_depth)
 {
-	{
-		// force rendering to on-screen portion of frame buffer
+	//only images up to 512x512 are supported
+	llassert(mFullHeight <= 512);
+	llassert(mFullWidth <= 512);
+
+	if (gGLManager.mHasFramebufferObject && gPipeline.mWaterDis.isComplete())
+	{ //using offscreen render target, just use the bottom left corner
+		mOrigin.set(0, 0);
+	}
+	else
+	{ // force rendering to on-screen portion of frame buffer
 		LLCoordScreen window_pos;
 		gViewerWindow->getWindow()->getPosition( &window_pos );
 		mOrigin.set(0, gViewerWindow->getWindowHeightRaw() - mFullHeight);  // top left corner
@@ -140,9 +148,9 @@ void LLViewerDynamicTexture::preRender(BOOL clear_depth)
 			mOrigin.mY += window_pos.mY;
 			mOrigin.mY = llmax(mOrigin.mY, 0) ;
 		}
-
-		gGL.getTexUnit(0)->unbind(LLTexUnit::TT_TEXTURE);
 	}
+
+	gGL.getTexUnit(0)->unbind(LLTexUnit::TT_TEXTURE);
 	// Set up camera
 	LLViewerCamera* camera = LLViewerCamera::getInstance();
 	mCamera.setOrigin(*camera);
@@ -208,6 +216,13 @@ BOOL LLViewerDynamicTexture::updateAllInstances()
 		return TRUE;
 	}
 
+	bool use_fbo = gGLManager.mHasFramebufferObject && gPipeline.mWaterDis.isComplete();
+
+	if (use_fbo)
+	{
+		gPipeline.mWaterDis.bindTarget();
+	}
+
 	LLGLSLShader::bindNoShader();
 	LLVertexBuffer::unbind();
 	
@@ -241,6 +256,11 @@ BOOL LLViewerDynamicTexture::updateAllInstances()
 		}
 	}
 
+	if (use_fbo)
+	{
+		gPipeline.mWaterDis.flush();
+	}
+
 	return ret;
 }
 
diff --git a/indra/newview/llface.cpp b/indra/newview/llface.cpp
index 6dbeae6677..838e541145 100644
--- a/indra/newview/llface.cpp
+++ b/indra/newview/llface.cpp
@@ -693,6 +693,49 @@ static void xform(LLVector2 &tex_coord, F32 cosAng, F32 sinAng, F32 offS, F32 of
 	tex_coord.mV[1] = t;
 }
 
+// Transform the texture coordinates for this face.
+static void xform4a(LLVector4a &tex_coord, const LLVector4a& trans, const LLVector4Logical& mask, const LLVector4a& rot0, const LLVector4a& rot1, const LLVector4a& offset, const LLVector4a& scale) 
+{
+	//tex coord is two coords, <s0, t0, s1, t1>
+	LLVector4a st;
+
+	// Texture transforms are done about the center of the face.
+	st.setAdd(tex_coord, trans);
+	
+	// Handle rotation
+	LLVector4a rot_st;
+		
+	// <s0 * cosAng, s0*-sinAng, s1*cosAng, s1*-sinAng>
+	LLVector4a s0;
+	s0.splat(st, 0);
+	LLVector4a s1;
+	s1.splat(st, 2);
+	LLVector4a ss;
+	ss.setSelectWithMask(mask, s1, s0);
+
+	LLVector4a a; 
+	a.setMul(rot0, ss);
+	
+	// <t0*sinAng, t0*cosAng, t1*sinAng, t1*cosAng>
+	LLVector4a t0;
+	t0.splat(st, 1);
+	LLVector4a t1;
+	t1.splat(st, 3);
+	LLVector4a tt;
+	tt.setSelectWithMask(mask, t1, t0);
+
+	LLVector4a b;
+	b.setMul(rot1, tt);
+		
+	st.setAdd(a,b);
+
+	// Then scale
+	st.mul(scale);
+
+	// Then offset
+	tex_coord.setAdd(st, offset);
+}
+
 
 bool less_than_max_mag(const LLVector4a& vec)
 {
@@ -1060,6 +1103,16 @@ static LLFastTimer::DeclareTimer FTM_FACE_GEOM_EMISSIVE("Emissive");
 static LLFastTimer::DeclareTimer FTM_FACE_GEOM_WEIGHTS("Weights");
 static LLFastTimer::DeclareTimer FTM_FACE_GEOM_BINORMAL("Binormal");
 static LLFastTimer::DeclareTimer FTM_FACE_GEOM_INDEX("Index");
+static LLFastTimer::DeclareTimer FTM_FACE_GEOM_INDEX_TAIL("Tail");
+static LLFastTimer::DeclareTimer FTM_FACE_POSITION_STORE("Pos");
+static LLFastTimer::DeclareTimer FTM_FACE_TEXTURE_INDEX_STORE("TexIdx");
+static LLFastTimer::DeclareTimer FTM_FACE_POSITION_PAD("Pad");
+static LLFastTimer::DeclareTimer FTM_FACE_TEX_DEFAULT("Default");
+static LLFastTimer::DeclareTimer FTM_FACE_TEX_QUICK("Quick");
+static LLFastTimer::DeclareTimer FTM_FACE_TEX_QUICK_NO_XFORM("No Xform");
+static LLFastTimer::DeclareTimer FTM_FACE_TEX_QUICK_XFORM("Xform");
+
+static LLFastTimer::DeclareTimer FTM_FACE_TEX_QUICK_PLANAR("Quick Planar");
 
 BOOL LLFace::getGeometryVolume(const LLVolume& volume,
 							   const S32 &f,
@@ -1078,7 +1131,9 @@ BOOL LLFace::getGeometryVolume(const LLVolume& volume,
 		updateRebuildFlags();
 	}
 
-	bool map_range = gGLManager.mHasMapBufferRange || gGLManager.mHasFlushBufferRange;
+
+	//don't use map range (generates many redundant unmap calls)
+	bool map_range = false; //gGLManager.mHasMapBufferRange || gGLManager.mHasFlushBufferRange;
 
 	if (mVertexBuffer.notNull())
 	{
@@ -1104,16 +1159,12 @@ BOOL LLFace::getGeometryVolume(const LLVolume& volume,
 	}
 
 	LLStrider<LLVector3> vert;
-	LLVector4a* vertices = NULL;
 	LLStrider<LLVector2> tex_coords;
 	LLStrider<LLVector2> tex_coords2;
-	LLVector4a* normals = NULL;
 	LLStrider<LLVector3> norm;
 	LLStrider<LLColor4U> colors;
-	LLVector4a* binormals = NULL;
 	LLStrider<LLVector3> binorm;
 	LLStrider<U16> indicesp;
-	LLVector4a* weights = NULL;
 	LLStrider<LLVector4> wght;
 
 	BOOL full_rebuild = force_rebuild || mDrawablep->isState(LLDrawable::REBUILD_VOLUME);
@@ -1202,7 +1253,7 @@ BOOL LLFace::getGeometryVolume(const LLVolume& volume,
 		LLFastTimer t(FTM_FACE_GEOM_INDEX);
 		mVertexBuffer->getIndexStrider(indicesp, mIndicesIndex, mIndicesCount, map_range);
 
-		__m128i* dst = (__m128i*) indicesp.get();
+		volatile __m128i* dst = (__m128i*) indicesp.get();
 		__m128i* src = (__m128i*) vf.mIndices;
 		__m128i offset = _mm_set1_epi16(index_offset);
 
@@ -1211,12 +1262,17 @@ BOOL LLFace::getGeometryVolume(const LLVolume& volume,
 		for (S32 i = 0; i < end; i++)
 		{
 			__m128i res = _mm_add_epi16(src[i], offset);
-			_mm_storeu_si128(dst+i, res);
+			_mm_storeu_si128((__m128i*) dst++, res);
 		}
 
-		for (S32 i = end*8; i < num_indices; ++i)
 		{
-			indicesp[i] = vf.mIndices[i]+index_offset;
+			LLFastTimer t(FTM_FACE_GEOM_INDEX_TAIL);
+			U16* idx = (U16*) dst;
+
+			for (S32 i = end*8; i < num_indices; ++i)
+			{
+				*idx++ = vf.mIndices[i]+index_offset;
+			}
 		}
 
 		if (map_range)
@@ -1373,19 +1429,48 @@ BOOL LLFace::getGeometryVolume(const LLVolume& volume,
 
 			if (texgen != LLTextureEntry::TEX_GEN_PLANAR)
 			{
+				LLFastTimer t(FTM_FACE_TEX_QUICK);
 				if (!do_tex_mat)
 				{
 					if (!do_xform)
 					{
+						LLFastTimer t(FTM_FACE_TEX_QUICK_NO_XFORM);
 						LLVector4a::memcpyNonAliased16((F32*) tex_coords.get(), (F32*) vf.mTexCoords, num_vertices*2*sizeof(F32));
 					}
 					else
 					{
-						for (S32 i = 0; i < num_vertices; i++)
+						LLFastTimer t(FTM_FACE_TEX_QUICK_XFORM);
+						F32* dst = (F32*) tex_coords.get();
+						LLVector4a* src = (LLVector4a*) vf.mTexCoords;
+
+						LLVector4a trans;
+						trans.splat(-0.5f);
+
+						LLVector4a rot0;
+						rot0.set(cos_ang, -sin_ang, cos_ang, -sin_ang);
+
+						LLVector4a rot1;
+						rot1.set(sin_ang, cos_ang, sin_ang, cos_ang);
+
+						LLVector4a scale;
+						scale.set(ms, mt, ms, mt);
+
+						LLVector4a offset;
+						offset.set(os+0.5f, ot+0.5f, os+0.5f, ot+0.5f);
+
+						LLVector4Logical mask;
+						mask.clear();
+						mask.setElement<2>();
+						mask.setElement<3>();
+
+						U32 count = num_vertices/2 + num_vertices%2;
+
+						for (S32 i = 0; i < count; i++)
 						{	
-							LLVector2 tc(vf.mTexCoords[i]);
-							xform(tc, cos_ang, sin_ang, os, ot, ms, mt);
-							*tex_coords++ = tc;	
+							LLVector4a res = *src++;
+							xform4a(res, trans, mask, rot0, rot1, offset, scale);
+							res.store4a(dst);
+							dst += 4;
 						}
 					}
 				}
@@ -1407,6 +1492,7 @@ BOOL LLFace::getGeometryVolume(const LLVolume& volume,
 			}
 			else
 			{ //no bump, no atlas, tex gen planar
+				LLFastTimer t(FTM_FACE_TEX_QUICK_PLANAR);
 				if (do_tex_mat)
 				{
 					for (S32 i = 0; i < num_vertices; i++)
@@ -1451,6 +1537,7 @@ BOOL LLFace::getGeometryVolume(const LLVolume& volume,
 		}
 		else
 		{ //either bump mapped or in atlas, just do the whole expensive loop
+			LLFastTimer t(FTM_FACE_TEX_DEFAULT);
 			mVertexBuffer->getTexCoord0Strider(tex_coords, mGeomIndex, mGeomCount, map_range);
 
 			std::vector<LLVector2> bump_tc;
@@ -1642,44 +1729,63 @@ BOOL LLFace::getGeometryVolume(const LLVolume& volume,
 		llassert(num_vertices > 0);
 		
 		mVertexBuffer->getVertexStrider(vert, mGeomIndex, mGeomCount, map_range);
-		vertices = (LLVector4a*) vert.get();
-	
+			
+
 		LLMatrix4a mat_vert;
 		mat_vert.loadu(mat_vert_in);
 
 		LLVector4a* src = vf.mPositions;
-		LLVector4a* dst = vertices;
+		volatile F32* dst = (volatile F32*) vert.get();
 
-		LLVector4a* end = dst+num_vertices;
-		do
-		{	
-			mat_vert.affineTransform(*src++, *dst++);
-		}
-		while(dst < end);
+		volatile F32* end = dst+num_vertices*4;
+		LLVector4a res;
 
-		F32 index = (F32) (mTextureIndex < 255 ? mTextureIndex : 0);
+		LLVector4a texIdx;
+
+		U8 index = mTextureIndex < 255 ? mTextureIndex : 0;
+
+		F32 val = 0.f;
+		U8* vp = (U8*) &val;
+		vp[0] = index;
+		vp[1] = 0;
+		vp[2] = 0;
+		vp[3] = 0;
 
 		llassert(index <= LLGLSLShader::sIndexedTextureChannels-1);
-		F32 *index_dst = (F32*) vertices;
-		F32 *index_end = (F32*) end;
 
-		index_dst += 3;
-		index_end += 3;
-		do
+		LLVector4Logical mask;
+		mask.clear();
+		mask.setElement<3>();
+		
+		texIdx.set(0,0,0,val);
+
 		{
-			*index_dst = index;
-			index_dst += 4;
+			LLFastTimer t(FTM_FACE_POSITION_STORE);
+			LLVector4a tmp;
+
+			do
+			{	
+				mat_vert.affineTransform(*src++, res);
+				tmp.setSelectWithMask(mask, texIdx, res);
+				tmp.store4a((F32*) dst);
+				dst += 4;
+			}
+			while(dst < end);
 		}
-		while (index_dst < index_end);
-		
-		S32 aligned_pad_vertices = mGeomCount - num_vertices;
-		LLVector4a* last_vec = end - 1;
-		while (aligned_pad_vertices > 0)
+
 		{
-			--aligned_pad_vertices;
-			*dst++ = *last_vec;
+			LLFastTimer t(FTM_FACE_POSITION_PAD);
+			S32 aligned_pad_vertices = mGeomCount - num_vertices;
+			res.set(res[0], res[1], res[2], 0.f);
+
+			while (aligned_pad_vertices > 0)
+			{
+				--aligned_pad_vertices;
+				res.store4a((F32*) dst);
+				dst += 4;
+			}
 		}
-		
+
 		if (map_range)
 		{
 			mVertexBuffer->flush();
@@ -1690,14 +1796,15 @@ BOOL LLFace::getGeometryVolume(const LLVolume& volume,
 	{
 		LLFastTimer t(FTM_FACE_GEOM_NORMAL);
 		mVertexBuffer->getNormalStrider(norm, mGeomIndex, mGeomCount, map_range);
-		normals = (LLVector4a*) norm.get();
+		F32* normals = (F32*) norm.get();
 	
 		for (S32 i = 0; i < num_vertices; i++)
 		{	
 			LLVector4a normal;
 			mat_normal.rotate(vf.mNormals[i], normal);
 			normal.normalize3fast();
-			normals[i] = normal;
+			normal.store4a(normals);
+			normals += 4;
 		}
 
 		if (map_range)
@@ -1710,14 +1817,15 @@ BOOL LLFace::getGeometryVolume(const LLVolume& volume,
 	{
 		LLFastTimer t(FTM_FACE_GEOM_BINORMAL);
 		mVertexBuffer->getBinormalStrider(binorm, mGeomIndex, mGeomCount, map_range);
-		binormals = (LLVector4a*) binorm.get();
+		F32* binormals = (F32*) binorm.get();
 		
 		for (S32 i = 0; i < num_vertices; i++)
 		{	
 			LLVector4a binormal;
 			mat_normal.rotate(vf.mBinormals[i], binormal);
 			binormal.normalize3fast();
-			binormals[i] = binormal;
+			binormal.store4a(binormals);
+			binormals += 4;
 		}
 
 		if (map_range)
@@ -1730,8 +1838,8 @@ BOOL LLFace::getGeometryVolume(const LLVolume& volume,
 	{
 		LLFastTimer t(FTM_FACE_GEOM_WEIGHTS);
 		mVertexBuffer->getWeight4Strider(wght, mGeomIndex, mGeomCount, map_range);
-		weights = (LLVector4a*) wght.get();
-		LLVector4a::memcpyNonAliased16((F32*) weights, (F32*) vf.mWeights, num_vertices*4*sizeof(F32));
+		F32* weights = (F32*) wght.get();
+		LLVector4a::memcpyNonAliased16(weights, (F32*) vf.mWeights, num_vertices*4*sizeof(F32));
 		if (map_range)
 		{
 			mVertexBuffer->flush();
@@ -1750,7 +1858,7 @@ BOOL LLFace::getGeometryVolume(const LLVolume& volume,
 		
 		src.loadua((F32*) vec);
 
-		LLVector4a* dst = (LLVector4a*) colors.get();
+		F32* dst = (F32*) colors.get();
 		S32 num_vecs = num_vertices/4;
 		if (num_vertices%4 > 0)
 		{
@@ -1759,7 +1867,8 @@ BOOL LLFace::getGeometryVolume(const LLVolume& volume,
 
 		for (S32 i = 0; i < num_vecs; i++)
 		{	
-			dst[i] = src;
+			src.store4a(dst);
+			dst += 4;
 		}
 
 		if (map_range)
@@ -1789,7 +1898,7 @@ BOOL LLFace::getGeometryVolume(const LLVolume& volume,
 		
 		src.loadua((F32*) vec);
 
-		LLVector4a* dst = (LLVector4a*) emissive.get();
+		F32* dst = (F32*) emissive.get();
 		S32 num_vecs = num_vertices/4;
 		if (num_vertices%4 > 0)
 		{
@@ -1798,7 +1907,8 @@ BOOL LLFace::getGeometryVolume(const LLVolume& volume,
 
 		for (S32 i = 0; i < num_vecs; i++)
 		{	
-			dst[i] = src;
+			src.store4a(dst);
+			dst += 4;
 		}
 
 		if (map_range)
@@ -1821,6 +1931,7 @@ BOOL LLFace::getGeometryVolume(const LLVolume& volume,
 		mTexExtents[1][1] *= et ;
 	}
 
+
 	mLastVertexBuffer = mVertexBuffer;
 	mLastGeomCount = mGeomCount;
 	mLastGeomIndex = mGeomIndex;
diff --git a/indra/newview/llfeaturemanager.cpp b/indra/newview/llfeaturemanager.cpp
index 08f9d26705..82f38ae4e9 100644
--- a/indra/newview/llfeaturemanager.cpp
+++ b/indra/newview/llfeaturemanager.cpp
@@ -779,6 +779,10 @@ void LLFeatureManager::applyBaseMasks()
 	{
 		maskFeatures("MapBufferRange");
 	}
+	if (gGLManager.mVRAM > 512)
+	{
+		maskFeatures("VRAMGT512");
+	}
 
 	// now mask by gpu string
 	// Replaces ' ' with '_' in mGPUString to deal with inability for parser to handle spaces
diff --git a/indra/newview/llfloatereditsky.cpp b/indra/newview/llfloatereditsky.cpp
index abee7b5dc9..352361ce9e 100644
--- a/indra/newview/llfloatereditsky.cpp
+++ b/indra/newview/llfloatereditsky.cpp
@@ -151,8 +151,8 @@ void LLFloaterEditSky::initCallbacks(void)
 	getChild<LLUICtrl>("WLBlueHorizon")->setCommitCallback(boost::bind(&LLFloaterEditSky::onColorControlMoved, this, _1, &param_mgr.mBlueHorizon));
 
 	// haze density, horizon, mult, and altitude
-	getChild<LLUICtrl>("WLHazeDensity")->setCommitCallback(boost::bind(&LLFloaterEditSky::onColorControlRMoved, this, _1, &param_mgr.mHazeDensity));
-	getChild<LLUICtrl>("WLHazeHorizon")->setCommitCallback(boost::bind(&LLFloaterEditSky::onColorControlRMoved, this, _1, &param_mgr.mHazeHorizon));
+	getChild<LLUICtrl>("WLHazeDensity")->setCommitCallback(boost::bind(&LLFloaterEditSky::onFloatControlMoved, this, _1, &param_mgr.mHazeDensity));
+	getChild<LLUICtrl>("WLHazeHorizon")->setCommitCallback(boost::bind(&LLFloaterEditSky::onFloatControlMoved, this, _1, &param_mgr.mHazeHorizon));
 	getChild<LLUICtrl>("WLDensityMult")->setCommitCallback(boost::bind(&LLFloaterEditSky::onFloatControlMoved, this, _1, &param_mgr.mDensityMult));
 	getChild<LLUICtrl>("WLMaxAltitude")->setCommitCallback(boost::bind(&LLFloaterEditSky::onFloatControlMoved, this, _1, &param_mgr.mMaxAlt));
 
@@ -220,15 +220,14 @@ void LLFloaterEditSky::syncControls()
 	setColorSwatch("WLBlueHorizon", param_mgr->mBlueHorizon, WL_BLUE_HORIZON_DENSITY_SCALE);
 
 	// haze density, horizon, mult, and altitude
-	param_mgr->mHazeDensity = cur_params.getVector(param_mgr->mHazeDensity.mName, err);
-	childSetValue("WLHazeDensity", param_mgr->mHazeDensity.r);
-	param_mgr->mHazeHorizon = cur_params.getVector(param_mgr->mHazeHorizon.mName, err);
-	childSetValue("WLHazeHorizon", param_mgr->mHazeHorizon.r);
-	param_mgr->mDensityMult = cur_params.getVector(param_mgr->mDensityMult.mName, err);
-	childSetValue("WLDensityMult", param_mgr->mDensityMult.x *
-		param_mgr->mDensityMult.mult);
-	param_mgr->mMaxAlt = cur_params.getVector(param_mgr->mMaxAlt.mName, err);
-	childSetValue("WLMaxAltitude", param_mgr->mMaxAlt.x);
+	param_mgr->mHazeDensity = cur_params.getFloat(param_mgr->mHazeDensity.mName, err);
+	childSetValue("WLHazeDensity", (F32) param_mgr->mHazeDensity);
+	param_mgr->mHazeHorizon = cur_params.getFloat(param_mgr->mHazeHorizon.mName, err);
+	childSetValue("WLHazeHorizon", (F32) param_mgr->mHazeHorizon);
+	param_mgr->mDensityMult = cur_params.getFloat(param_mgr->mDensityMult.mName, err);
+	childSetValue("WLDensityMult", ((F32) param_mgr->mDensityMult) * param_mgr->mDensityMult.mult);
+	param_mgr->mMaxAlt = cur_params.getFloat(param_mgr->mMaxAlt.mName, err);
+	childSetValue("WLMaxAltitude", (F32) param_mgr->mMaxAlt);
 
 	// blue density
 	param_mgr->mBlueDensity = cur_params.getVector(param_mgr->mBlueDensity.mName, err);
@@ -273,10 +272,10 @@ void LLFloaterEditSky::syncControls()
 	childSetValue("WLCloudDetailDensity", param_mgr->mCloudDetail.b);
 
 	// Cloud extras
-	param_mgr->mCloudCoverage = cur_params.getVector(param_mgr->mCloudCoverage.mName, err);
-	param_mgr->mCloudScale = cur_params.getVector(param_mgr->mCloudScale.mName, err);
-	childSetValue("WLCloudCoverage", param_mgr->mCloudCoverage.x);
-	childSetValue("WLCloudScale", param_mgr->mCloudScale.x);
+	param_mgr->mCloudCoverage = cur_params.getFloat(param_mgr->mCloudCoverage.mName, err);
+	param_mgr->mCloudScale = cur_params.getFloat(param_mgr->mCloudScale.mName, err);
+	childSetValue("WLCloudCoverage", (F32) param_mgr->mCloudCoverage);
+	childSetValue("WLCloudScale", (F32) param_mgr->mCloudScale);
 
 	// cloud scrolling
 	bool lockX = !param_mgr->mCurParams.getEnableCloudScrollX();
@@ -306,13 +305,13 @@ void LLFloaterEditSky::syncControls()
 	childSetValue("WLCloudScrollX", param_mgr->mCurParams.getCloudScrollX() - 10.0f);
 	childSetValue("WLCloudScrollY", param_mgr->mCurParams.getCloudScrollY() - 10.0f);
 
-	param_mgr->mDistanceMult = cur_params.getVector(param_mgr->mDistanceMult.mName, err);
-	childSetValue("WLDistanceMult", param_mgr->mDistanceMult.x);
+	param_mgr->mDistanceMult = cur_params.getFloat(param_mgr->mDistanceMult.mName, err);
+	childSetValue("WLDistanceMult", (F32) param_mgr->mDistanceMult);
 
 	// Tweak extras
 
-	param_mgr->mWLGamma = cur_params.getVector(param_mgr->mWLGamma.mName, err);
-	childSetValue("WLGamma", param_mgr->mWLGamma.x);
+	param_mgr->mWLGamma = cur_params.getFloat(param_mgr->mWLGamma.mName, err);
+	childSetValue("WLGamma", (F32) param_mgr->mWLGamma);
 
 	childSetValue("WLStarAlpha", param_mgr->mCurParams.getStarBrightness());
 }
diff --git a/indra/newview/llfloaterhardwaresettings.cpp b/indra/newview/llfloaterhardwaresettings.cpp
index f9a403cf9f..e8f1d58df8 100644
--- a/indra/newview/llfloaterhardwaresettings.cpp
+++ b/indra/newview/llfloaterhardwaresettings.cpp
@@ -99,6 +99,12 @@ void LLFloaterHardwareSettings::refreshEnabledState()
 		getChildView("vbo")->setEnabled(FALSE);
 	}
 
+	if (!LLFeatureManager::getInstance()->isFeatureAvailable("RenderCompressTextures") ||
+		!gGLManager.mHasVertexBufferObject)
+	{
+		getChildView("texture compression")->setEnabled(FALSE);
+	}
+
 	// if no windlight shaders, turn off nighttime brightness, gamma, and fog distance
 	LLSpinCtrl* gamma_ctrl = getChild<LLSpinCtrl>("gamma");
 	gamma_ctrl->setEnabled(!gPipeline.canUseWindLightShaders());
diff --git a/indra/newview/llfloatermodelpreview.cpp b/indra/newview/llfloatermodelpreview.cpp
index 64bdcccd9f..7448f2bb2a 100755
--- a/indra/newview/llfloatermodelpreview.cpp
+++ b/indra/newview/llfloatermodelpreview.cpp
@@ -3969,7 +3969,7 @@ void LLModelPreview::genLODs(S32 which_lod, U32 decimation, bool enforce_tri_lim
 				U32 num_indices = mVertexBuffer[5][mdl][i]->getNumIndices();
 				if (num_indices > 2)
 				{
-					glodInsertElements(mObject[mdl], i, GL_TRIANGLES, num_indices, GL_UNSIGNED_SHORT, mVertexBuffer[5][mdl][i]->getIndicesPointer(), 0, 0.f);
+					glodInsertElements(mObject[mdl], i, GL_TRIANGLES, num_indices, GL_UNSIGNED_SHORT, (U8*) mVertexBuffer[5][mdl][i]->getIndicesPointer(), 0, 0.f);
 				}
 				tri_count += num_indices/3;
 				stop_gloderror();
@@ -4083,14 +4083,14 @@ void LLModelPreview::genLODs(S32 which_lod, U32 decimation, bool enforce_tri_lim
 				{
 					buff->allocateBuffer(sizes[i*2+1], sizes[i*2], true);
 					buff->setBuffer(type_mask);
-					glodFillElements(mObject[base], names[i], GL_UNSIGNED_SHORT, buff->getIndicesPointer());
+					glodFillElements(mObject[base], names[i], GL_UNSIGNED_SHORT, (U8*) buff->getIndicesPointer());
 					stop_gloderror();
 				}
 				else
 				{ //this face was eliminated, create a dummy triangle (one vertex, 3 indices, all 0)
 					buff->allocateBuffer(1, 3, true);
-					memset(buff->getMappedData(), 0, buff->getSize());
-					memset(buff->getIndicesPointer(), 0, buff->getIndicesSize());
+					memset((U8*) buff->getMappedData(), 0, buff->getSize());
+					memset((U8*) buff->getIndicesPointer(), 0, buff->getIndicesSize());
 				}
 
 				buff->validateRange(0, buff->getNumVerts()-1, buff->getNumIndices(), 0);
@@ -4525,7 +4525,17 @@ void LLModelPreview::updateStatusMessages()
 		}
 	}
 
-	if (mFMP->childGetValue("physics_lod_combo").asString() == "From file")
+	
+	LLCtrlSelectionInterface* iface = fmp->childGetSelectionInterface("physics_lod_combo");
+	S32 which_mode = 0; 
+	S32 file_mode = 1;
+	if (iface)
+	{
+		which_mode = iface->getFirstSelectedIndex();
+		file_mode = iface->getItemCount() - 1;
+	}
+
+	if (which_mode == file_mode)
 	{
 		mFMP->childEnable("physics_file");
 		mFMP->childEnable("physics_browse");
@@ -4880,8 +4890,8 @@ void LLModelPreview::addEmptyFace( LLModel* pTarget )
 	LLPointer<LLVertexBuffer> buff = new LLVertexBuffer(type_mask, 0);
 	
 	buff->allocateBuffer(1, 3, true);
-	memset( buff->getMappedData(), 0, buff->getSize() );
-	memset( buff->getIndicesPointer(), 0, buff->getIndicesSize() );
+	memset( (U8*) buff->getMappedData(), 0, buff->getSize() );
+	memset( (U8*) buff->getIndicesPointer(), 0, buff->getIndicesSize() );
 		
 	buff->validateRange( 0, buff->getNumVerts()-1, buff->getNumIndices(), 0 );
 		
diff --git a/indra/newview/llmeshrepository.cpp b/indra/newview/llmeshrepository.cpp
index c64479f589..f461c7e46f 100644
--- a/indra/newview/llmeshrepository.cpp
+++ b/indra/newview/llmeshrepository.cpp
@@ -88,6 +88,9 @@ const S32 MAX_MESH_VERSION = 999;
 U32 LLMeshRepository::sBytesReceived = 0;
 U32 LLMeshRepository::sHTTPRequestCount = 0;
 U32 LLMeshRepository::sHTTPRetryCount = 0;
+U32 LLMeshRepository::sLODProcessing = 0;
+U32 LLMeshRepository::sLODPending = 0;
+
 U32 LLMeshRepository::sCacheBytesRead = 0;
 U32 LLMeshRepository::sCacheBytesWritten = 0;
 U32 LLMeshRepository::sPeakKbps = 0;
@@ -205,6 +208,12 @@ public:
 	LLMeshHeaderResponder(const LLVolumeParams& mesh_params)
 		: mMeshParams(mesh_params)
 	{
+		LLMeshRepoThread::sActiveHeaderRequests++;
+	}
+
+	~LLMeshHeaderResponder()
+	{
+		LLMeshRepoThread::sActiveHeaderRequests--;
 	}
 
 	virtual void completedRaw(U32 status, const std::string& reason,
@@ -224,6 +233,12 @@ public:
 	LLMeshLODResponder(const LLVolumeParams& mesh_params, S32 lod, U32 offset, U32 requested_bytes)
 		: mMeshParams(mesh_params), mLOD(lod), mOffset(offset), mRequestedBytes(requested_bytes)
 	{
+		LLMeshRepoThread::sActiveLODRequests++;
+	}
+
+	~LLMeshLODResponder()
+	{
+		LLMeshRepoThread::sActiveLODRequests--;
 	}
 
 	virtual void completedRaw(U32 status, const std::string& reason,
@@ -493,10 +508,12 @@ void LLMeshRepoThread::run()
 			
 			while (!mLODReqQ.empty() && count < MAX_MESH_REQUESTS_PER_SECOND && sActiveLODRequests < sMaxConcurrentRequests)
 			{
+				if (mMutex)
 				{
 					mMutex->lock();
 					LODRequest req = mLODReqQ.front();
 					mLODReqQ.pop();
+					LLMeshRepository::sLODProcessing--;
 					mMutex->unlock();
 					if (!fetchMeshLOD(req.mMeshParams, req.mLOD, count))//failed, resubmit
 					{
@@ -509,6 +526,7 @@ void LLMeshRepoThread::run()
 
 			while (!mHeaderReqQ.empty() && count < MAX_MESH_REQUESTS_PER_SECOND && sActiveHeaderRequests < sMaxConcurrentRequests)
 			{
+				if (mMutex)
 				{
 					mMutex->lock();
 					HeaderRequest req = mHeaderReqQ.front();
@@ -607,6 +625,7 @@ void LLMeshRepoThread::loadMeshLOD(const LLVolumeParams& mesh_params, S32 lod)
 		{
 			LLMutexLock lock(mMutex);
 			mLODReqQ.push(req);
+			LLMeshRepository::sLODProcessing++;
 		}
 	}
 	else
@@ -654,6 +673,12 @@ std::string LLMeshRepoThread::constructUrl(LLUUID mesh_id)
 
 bool LLMeshRepoThread::fetchMeshSkinInfo(const LLUUID& mesh_id)
 { //protected by mMutex
+	
+	if (!mHeaderMutex)
+	{
+		return false;
+	}
+
 	mHeaderMutex->lock();
 
 	if (mMeshHeader.find(mesh_id) == mMeshHeader.end())
@@ -711,10 +736,9 @@ bool LLMeshRepoThread::fetchMeshSkinInfo(const LLUUID& mesh_id)
 			if (!http_url.empty())
 			{				
 				ret = mCurlRequest->getByteRange(http_url, headers, offset, size,
-										   new LLMeshSkinInfoResponder(mesh_id, offset, size));
+												 new LLMeshSkinInfoResponder(mesh_id, offset, size));
 				if(ret)
 				{
-					++sActiveLODRequests;
 					LLMeshRepository::sHTTPRequestCount++;
 				}
 			}
@@ -731,6 +755,11 @@ bool LLMeshRepoThread::fetchMeshSkinInfo(const LLUUID& mesh_id)
 
 bool LLMeshRepoThread::fetchMeshDecomposition(const LLUUID& mesh_id)
 { //protected by mMutex
+	if (!mHeaderMutex)
+	{
+		return false;
+	}
+
 	mHeaderMutex->lock();
 
 	if (mMeshHeader.find(mesh_id) == mMeshHeader.end())
@@ -789,10 +818,9 @@ bool LLMeshRepoThread::fetchMeshDecomposition(const LLUUID& mesh_id)
 			if (!http_url.empty())
 			{				
 				ret = mCurlRequest->getByteRange(http_url, headers, offset, size,
-										   new LLMeshDecompositionResponder(mesh_id, offset, size));
+												 new LLMeshDecompositionResponder(mesh_id, offset, size));
 				if(ret)
 				{
-					++sActiveLODRequests;
 					LLMeshRepository::sHTTPRequestCount++;
 				}
 			}
@@ -809,6 +837,11 @@ bool LLMeshRepoThread::fetchMeshDecomposition(const LLUUID& mesh_id)
 
 bool LLMeshRepoThread::fetchMeshPhysicsShape(const LLUUID& mesh_id)
 { //protected by mMutex
+	if (!mHeaderMutex)
+	{
+		return false;
+	}
+
 	mHeaderMutex->lock();
 
 	if (mMeshHeader.find(mesh_id) == mMeshHeader.end())
@@ -866,11 +899,10 @@ bool LLMeshRepoThread::fetchMeshPhysicsShape(const LLUUID& mesh_id)
 			if (!http_url.empty())
 			{				
 				ret = mCurlRequest->getByteRange(http_url, headers, offset, size,
-										   new LLMeshPhysicsShapeResponder(mesh_id, offset, size));
+												 new LLMeshPhysicsShapeResponder(mesh_id, offset, size));
 
 				if(ret)
 				{
-					++sActiveLODRequests;
 					LLMeshRepository::sHTTPRequestCount++;
 				}
 			}
@@ -925,7 +957,6 @@ bool LLMeshRepoThread::fetchMeshHeader(const LLVolumeParams& mesh_params, U32& c
 		retval = mCurlRequest->getByteRange(http_url, headers, 0, 4096, new LLMeshHeaderResponder(mesh_params));
 		if(retval)
 		{
-			++sActiveHeaderRequests;
 			LLMeshRepository::sHTTPRequestCount++;
 		}
 		count++;
@@ -937,6 +968,11 @@ bool LLMeshRepoThread::fetchMeshHeader(const LLVolumeParams& mesh_params, U32& c
 //return false if failed to get mesh lod.
 bool LLMeshRepoThread::fetchMeshLOD(const LLVolumeParams& mesh_params, S32 lod, U32& count)
 { //protected by mMutex
+	if (!mHeaderMutex)
+	{
+		return false;
+	}
+
 	mHeaderMutex->lock();
 
 	bool retval = true;
@@ -995,7 +1031,6 @@ bool LLMeshRepoThread::fetchMeshLOD(const LLVolumeParams& mesh_params, S32 lod,
 
 				if(retval)
 				{
-					++sActiveLODRequests;				
 					LLMeshRepository::sHTTPRequestCount++;
 				}
 				count++;
@@ -1056,10 +1091,11 @@ bool LLMeshRepoThread::headerReceived(const LLVolumeParams& mesh_params, U8* dat
 	{
 		LLUUID mesh_id = mesh_params.getSculptID();
 		
-		mHeaderMutex->lock();
-		mMeshHeaderSize[mesh_id] = header_size;
-		mMeshHeader[mesh_id] = header;
-		mHeaderMutex->unlock();
+		{
+			LLMutexLock lock(mHeaderMutex);
+			mMeshHeaderSize[mesh_id] = header_size;
+			mMeshHeader[mesh_id] = header;
+			}
 
 		//check for pending requests
 		pending_lod_map::iterator iter = mPendingLOD.find(mesh_params);
@@ -1070,6 +1106,7 @@ bool LLMeshRepoThread::headerReceived(const LLVolumeParams& mesh_params, U8* dat
 			{
 				LODRequest req(mesh_params, iter->second[i]);
 				mLODReqQ.push(req);
+				LLMeshRepository::sLODProcessing++;
 			}
 		}
 		mPendingLOD.erase(iter);
@@ -1080,17 +1117,19 @@ bool LLMeshRepoThread::headerReceived(const LLVolumeParams& mesh_params, U8* dat
 
 bool LLMeshRepoThread::lodReceived(const LLVolumeParams& mesh_params, S32 lod, U8* data, S32 data_size)
 {
-	LLVolume* volume = new LLVolume(mesh_params, LLVolumeLODGroup::getVolumeScaleFromDetail(lod));
+	LLPointer<LLVolume> volume = new LLVolume(mesh_params, LLVolumeLODGroup::getVolumeScaleFromDetail(lod));
 	std::string mesh_string((char*) data, data_size);
 	std::istringstream stream(mesh_string);
 
 	if (volume->unpackVolumeFaces(stream, data_size))
 	{
-		LoadedMesh mesh(volume, mesh_params, lod);
 		if (volume->getNumFaces() > 0)
 		{
-			LLMutexLock lock(mMutex);
-			mLoadedQ.push(mesh);
+			LoadedMesh mesh(volume, mesh_params, lod);
+			{
+				LLMutexLock lock(mMutex);
+				mLoadedQ.push(mesh);
+			}
 			return true;
 		}
 	}
@@ -1631,6 +1670,11 @@ void LLMeshUploadThread::requestWholeModelFee()
 
 void LLMeshRepoThread::notifyLoadedMeshes()
 {
+	if (!mMutex)
+	{
+		return;
+	}
+
 	while (!mLoadedQ.empty())
 	{
 		mMutex->lock();
@@ -1753,7 +1797,6 @@ void LLMeshLODResponder::completedRaw(U32 status, const std::string& reason,
 							  const LLIOPipe::buffer_ptr_t& buffer)
 {
 
-	LLMeshRepoThread::sActiveLODRequests--;
 	S32 data_size = buffer->countAfter(channels.in(), NULL);
 
 	if (status < 200 || status > 400)
@@ -1970,7 +2013,6 @@ void LLMeshHeaderResponder::completedRaw(U32 status, const std::string& reason,
 							  const LLChannelDescriptors& channels,
 							  const LLIOPipe::buffer_ptr_t& buffer)
 {
-	LLMeshRepoThread::sActiveHeaderRequests--;
 	if (status < 200 || status > 400)
 	{
 		//llwarns
@@ -2188,6 +2230,7 @@ S32 LLMeshRepository::loadMesh(LLVOVolume* vobj, const LLVolumeParams& mesh_para
 			//first request for this mesh
 			mLoadingMeshes[detail][mesh_params].insert(vobj->getID());
 			mPendingRequests.push_back(LLMeshRepoThread::LODRequest(mesh_params, detail));
+			LLMeshRepository::sLODPending++;
 		}
 	}
 
@@ -2343,92 +2386,92 @@ void LLMeshRepository::notifyLoadedMeshes()
 		}
 	}
 
-	mMeshMutex->lock();	
-	mThread->mMutex->lock();
-		
-	//popup queued error messages from background threads
-	while (!mUploadErrorQ.empty())
 	{
-		LLNotificationsUtil::add("MeshUploadError", mUploadErrorQ.front());
-		mUploadErrorQ.pop();
-	}
+		LLMutexLock lock1(mMeshMutex);
+		LLMutexLock lock2(mThread->mMutex);
+		
+		//popup queued error messages from background threads
+		while (!mUploadErrorQ.empty())
+		{
+			LLNotificationsUtil::add("MeshUploadError", mUploadErrorQ.front());
+			mUploadErrorQ.pop();
+		}
 
-	S32 push_count = LLMeshRepoThread::sMaxConcurrentRequests-(LLMeshRepoThread::sActiveHeaderRequests+LLMeshRepoThread::sActiveLODRequests);
+		S32 push_count = LLMeshRepoThread::sMaxConcurrentRequests-(LLMeshRepoThread::sActiveHeaderRequests+LLMeshRepoThread::sActiveLODRequests);
 
-	if (push_count > 0)
-	{
-		//calculate "score" for pending requests
+		if (push_count > 0)
+		{
+			//calculate "score" for pending requests
 
-		//create score map
-		std::map<LLUUID, F32> score_map;
+			//create score map
+			std::map<LLUUID, F32> score_map;
 
-		for (U32 i = 0; i < 4; ++i)
-		{
-			for (mesh_load_map::iterator iter = mLoadingMeshes[i].begin();  iter != mLoadingMeshes[i].end(); ++iter)
+			for (U32 i = 0; i < 4; ++i)
 			{
-				F32 max_score = 0.f;
-				for (std::set<LLUUID>::iterator obj_iter = iter->second.begin(); obj_iter != iter->second.end(); ++obj_iter)
+				for (mesh_load_map::iterator iter = mLoadingMeshes[i].begin();  iter != mLoadingMeshes[i].end(); ++iter)
 				{
-					LLViewerObject* object = gObjectList.findObject(*obj_iter);
-
-					if (object)
+					F32 max_score = 0.f;
+					for (std::set<LLUUID>::iterator obj_iter = iter->second.begin(); obj_iter != iter->second.end(); ++obj_iter)
 					{
-						LLDrawable* drawable = object->mDrawable;
-						if (drawable)
+						LLViewerObject* object = gObjectList.findObject(*obj_iter);
+
+						if (object)
 						{
-							F32 cur_score = drawable->getRadius()/llmax(drawable->mDistanceWRTCamera, 1.f);
-							max_score = llmax(max_score, cur_score);
+							LLDrawable* drawable = object->mDrawable;
+							if (drawable)
+							{
+								F32 cur_score = drawable->getRadius()/llmax(drawable->mDistanceWRTCamera, 1.f);
+								max_score = llmax(max_score, cur_score);
+							}
 						}
 					}
-				}
 				
-				score_map[iter->first.getSculptID()] = max_score;
+					score_map[iter->first.getSculptID()] = max_score;
+				}
+			}
+
+			//set "score" for pending requests
+			for (std::vector<LLMeshRepoThread::LODRequest>::iterator iter = mPendingRequests.begin(); iter != mPendingRequests.end(); ++iter)
+			{
+				iter->mScore = score_map[iter->mMeshParams.getSculptID()];
+			}
+
+			//sort by "score"
+			std::sort(mPendingRequests.begin(), mPendingRequests.end(), LLMeshRepoThread::CompareScoreGreater());
+
+			while (!mPendingRequests.empty() && push_count > 0)
+			{
+				LLMeshRepoThread::LODRequest& request = mPendingRequests.front();
+				mThread->loadMeshLOD(request.mMeshParams, request.mLOD);
+				mPendingRequests.erase(mPendingRequests.begin());
+				LLMeshRepository::sLODPending--;
+				push_count--;
 			}
 		}
 
-		//set "score" for pending requests
-		for (std::vector<LLMeshRepoThread::LODRequest>::iterator iter = mPendingRequests.begin(); iter != mPendingRequests.end(); ++iter)
+		//send skin info requests
+		while (!mPendingSkinRequests.empty())
 		{
-			iter->mScore = score_map[iter->mMeshParams.getSculptID()];
+			mThread->loadMeshSkinInfo(mPendingSkinRequests.front());
+			mPendingSkinRequests.pop();
 		}
-
-		//sort by "score"
-		std::sort(mPendingRequests.begin(), mPendingRequests.end(), LLMeshRepoThread::CompareScoreGreater());
-
-		while (!mPendingRequests.empty() && push_count > 0)
+	
+		//send decomposition requests
+		while (!mPendingDecompositionRequests.empty())
 		{
-			LLMeshRepoThread::LODRequest& request = mPendingRequests.front();
-			mThread->loadMeshLOD(request.mMeshParams, request.mLOD);
-			mPendingRequests.erase(mPendingRequests.begin());
-			push_count--;
+			mThread->loadMeshDecomposition(mPendingDecompositionRequests.front());
+			mPendingDecompositionRequests.pop();
 		}
-	}
-
-	//send skin info requests
-	while (!mPendingSkinRequests.empty())
-	{
-		mThread->loadMeshSkinInfo(mPendingSkinRequests.front());
-		mPendingSkinRequests.pop();
-	}
 	
-	//send decomposition requests
-	while (!mPendingDecompositionRequests.empty())
-	{
-		mThread->loadMeshDecomposition(mPendingDecompositionRequests.front());
-		mPendingDecompositionRequests.pop();
-	}
+		//send physics shapes decomposition requests
+		while (!mPendingPhysicsShapeRequests.empty())
+		{
+			mThread->loadMeshPhysicsShape(mPendingPhysicsShapeRequests.front());
+			mPendingPhysicsShapeRequests.pop();
+		}
 	
-	//send physics shapes decomposition requests
-	while (!mPendingPhysicsShapeRequests.empty())
-	{
-		mThread->loadMeshPhysicsShape(mPendingPhysicsShapeRequests.front());
-		mPendingPhysicsShapeRequests.pop();
+		mThread->notifyLoadedMeshes();
 	}
-	
-	mThread->notifyLoadedMeshes();
-
-	mThread->mMutex->unlock();
-	mMeshMutex->unlock();
 
 	mThread->mSignal->signal();
 }
@@ -3076,13 +3119,14 @@ void LLPhysicsDecomp::doDecomposition()
 			num_hulls = LLConvexDecomposition::getInstance()->getNumHullsFromStage(stage);
 		}
 		
-		mMutex->lock();
-		mCurRequest->mHull.clear();
-		mCurRequest->mHull.resize(num_hulls);
+		{
+			LLMutexLock lock(mMutex);
+			mCurRequest->mHull.clear();
+			mCurRequest->mHull.resize(num_hulls);
 
-		mCurRequest->mHullMesh.clear();
-		mCurRequest->mHullMesh.resize(num_hulls);
-		mMutex->unlock();
+			mCurRequest->mHullMesh.clear();
+			mCurRequest->mHullMesh.resize(num_hulls);
+		}
 
 		for (S32 i = 0; i < num_hulls; ++i)
 		{
@@ -3106,14 +3150,14 @@ void LLPhysicsDecomp::doDecomposition()
 
 			get_vertex_buffer_from_mesh(mesh, mCurRequest->mHullMesh[i]);
 			
-			mMutex->lock();
-			mCurRequest->mHull[i] = p;
-			mMutex->unlock();
+			{
+				LLMutexLock lock(mMutex);
+				mCurRequest->mHull[i] = p;
+			}
 		}
 	
 		{
 			LLMutexLock lock(mMutex);
-
 			mCurRequest->setStatusMessage("FAIL");
 			completeCurrent();						
 		}
@@ -3181,7 +3225,6 @@ void LLPhysicsDecomp::doDecompositionSingleHull()
 	
 	LLCDMeshData mesh;	
 
-#if 1
 	setMeshData(mesh, true);
 
 	LLCDResult ret = decomp->buildSingleHull() ;
@@ -3192,11 +3235,12 @@ void LLPhysicsDecomp::doDecompositionSingleHull()
 	}
 	else
 	{
-		mMutex->lock();
-		mCurRequest->mHull.clear();
-		mCurRequest->mHull.resize(1);
-		mCurRequest->mHullMesh.clear();
-		mMutex->unlock();
+		{
+			LLMutexLock lock(mMutex);
+			mCurRequest->mHull.clear();
+			mCurRequest->mHull.resize(1);
+			mCurRequest->mHullMesh.clear();
+		}
 
 		std::vector<LLVector3> p;
 		LLCDHull hull;
@@ -3212,93 +3256,12 @@ void LLPhysicsDecomp::doDecompositionSingleHull()
 			p.push_back(vert);
 			v = (F32*) (((U8*) v) + hull.mVertexStrideBytes);
 		}
-						
-		mMutex->lock();
-		mCurRequest->mHull[0] = p;
-		mMutex->unlock();	
-	}		
-#else
-	setMeshData(mesh, false);
-
-	//set all parameters to default
-	std::map<std::string, const LLCDParam*> param_map;
-
-	static const LLCDParam* params = NULL;
-	static S32 param_count = 0;
-
-	if (!params)
-	{
-		param_count = decomp->getParameters(&params);
-	}
-	
-	for (S32 i = 0; i < param_count; ++i)
-	{
-		decomp->setParam(params[i].mName, params[i].mDefault.mIntOrEnumValue);
-	}
-
-	const S32 STAGE_DECOMPOSE = mStageID["Decompose"];	
-	const S32 STAGE_SIMPLIFY = mStageID["Simplify"];
-	const S32 DECOMP_PREVIEW = 0;
-	const S32 SIMPLIFY_RETAIN = 0;
-	
-	decomp->setParam("Decompose Quality", DECOMP_PREVIEW);
-	decomp->setParam("Simplify Method", SIMPLIFY_RETAIN);
-	decomp->setParam("Retain%", 0.f);
-
-	LLCDResult ret = LLCD_OK;
-	ret = decomp->executeStage(STAGE_DECOMPOSE);
-	
-	if (ret)
-	{
-		llwarns << "Could not execute decomposition stage when attempting to create single hull." << llendl;
-		make_box(mCurRequest);
-	}
-	else
-	{
-		ret = decomp->executeStage(STAGE_SIMPLIFY);
-
-		if (ret)
+					
 		{
-			llwarns << "Could not execute simiplification stage when attempting to create single hull." << llendl;
-			make_box(mCurRequest);
-		}
-		else
-		{
-			S32 num_hulls =0;
-			if (LLConvexDecomposition::getInstance() != NULL)
-			{
-				num_hulls = LLConvexDecomposition::getInstance()->getNumHullsFromStage(STAGE_SIMPLIFY);
-			}
-			
-			mMutex->lock();
-			mCurRequest->mHull.clear();
-			mCurRequest->mHull.resize(num_hulls);
-			mCurRequest->mHullMesh.clear();
-			mMutex->unlock();
-
-			for (S32 i = 0; i < num_hulls; ++i)
-			{
-				std::vector<LLVector3> p;
-				LLCDHull hull;
-				// if LLConvexDecomposition is a stub, num_hulls should have been set to 0 above, and we should not reach this code
-				LLConvexDecomposition::getInstance()->getHullFromStage(STAGE_SIMPLIFY, i, &hull);
-
-				const F32* v = hull.mVertexBase;
-
-				for (S32 j = 0; j < hull.mNumVertices; ++j)
-				{
-					LLVector3 vert(v[0], v[1], v[2]); 
-					p.push_back(vert);
-					v = (F32*) (((U8*) v) + hull.mVertexStrideBytes);
-				}
-						
-				mMutex->lock();
-				mCurRequest->mHull[i] = p;
-				mMutex->unlock();
-			}
+			LLMutexLock lock(mMutex);
+			mCurRequest->mHull[0] = p;
 		}
-	}
-#endif
+	}		
 
 	{
 		completeCurrent();
diff --git a/indra/newview/llmeshrepository.h b/indra/newview/llmeshrepository.h
index 2efe810438..da81bb057b 100644
--- a/indra/newview/llmeshrepository.h
+++ b/indra/newview/llmeshrepository.h
@@ -441,6 +441,8 @@ public:
 	static U32 sBytesReceived;
 	static U32 sHTTPRequestCount;
 	static U32 sHTTPRetryCount;
+	static U32 sLODPending;
+	static U32 sLODProcessing;
 	static U32 sCacheBytesRead;
 	static U32 sCacheBytesWritten;
 	static U32 sPeakKbps;
diff --git a/indra/newview/llselectmgr.cpp b/indra/newview/llselectmgr.cpp
index 5d0d1ef9a3..6111255a66 100644
--- a/indra/newview/llselectmgr.cpp
+++ b/indra/newview/llselectmgr.cpp
@@ -5556,38 +5556,37 @@ BOOL LLSelectNode::allowOperationOnNode(PermissionBit op, U64 group_proxy_power)
 //helper function for pushing relevant vertices from drawable to GL
 void pushWireframe(LLDrawable* drawable)
 {
-	if (drawable->isState(LLDrawable::RIGGED))
-	{ //render straight from rigged volume if this is a rigged attachment
-		LLVOVolume* vobj = drawable->getVOVolume();
-		if (vobj)
-		{
-			vobj->updateRiggedVolume();
-			LLRiggedVolume* rigged_volume = vobj->getRiggedVolume();
-			if (rigged_volume)
-			{
-				LLVertexBuffer::unbind();
-				gGL.pushMatrix();
-				gGL.multMatrix((F32*) vobj->getRelativeXform().mMatrix);
-				for (S32 i = 0; i < rigged_volume->getNumVolumeFaces(); ++i)
-				{
-					const LLVolumeFace& face = rigged_volume->getVolumeFace(i);
-					LLVertexBuffer::drawElements(LLRender::TRIANGLES, face.mPositions, face.mTexCoords, face.mNumIndices, face.mIndices);
-				}
-				gGL.popMatrix();
-			}
-		}
-	}
-	else
+	LLVOVolume* vobj = drawable->getVOVolume();
+	if (vobj)
 	{
-		for (S32 i = 0; i < drawable->getNumFaces(); ++i)
+		LLVertexBuffer::unbind();
+		gGL.pushMatrix();
+		gGL.multMatrix((F32*) vobj->getRelativeXform().mMatrix);
+
+		LLVolume* volume = NULL;
+
+		if (drawable->isState(LLDrawable::RIGGED))
+		{
+				vobj->updateRiggedVolume();
+				volume = vobj->getRiggedVolume();
+		}
+		else
+		{
+			volume = vobj->getVolume();
+		}
+
+		if (volume)
 		{
-			LLFace* face = drawable->getFace(i);
-			if (face->verify())
+			for (S32 i = 0; i < volume->getNumVolumeFaces(); ++i)
 			{
-				pushVerts(face, LLVertexBuffer::MAP_VERTEX | LLVertexBuffer::MAP_TEXCOORD0);
+				const LLVolumeFace& face = volume->getVolumeFace(i);
+				LLVertexBuffer::drawElements(LLRender::TRIANGLES, face.mPositions, face.mTexCoords, face.mNumIndices, face.mIndices);
 			}
 		}
+
+		gGL.popMatrix();
 	}
+	
 }
 
 void LLSelectNode::renderOneWireframe(const LLColor4& color)
diff --git a/indra/newview/llspatialpartition.cpp b/indra/newview/llspatialpartition.cpp
index 900f126049..5d196a465f 100644
--- a/indra/newview/llspatialpartition.cpp
+++ b/indra/newview/llspatialpartition.cpp
@@ -264,7 +264,7 @@ static LLFastTimer::DeclareTimer FTM_BUILD_OCCLUSION("Build Occlusion");
 
 void LLSpatialGroup::buildOcclusion()
 {
-	if (mOcclusionVerts.isNull())
+	//if (mOcclusionVerts.isNull())
 	{
 		mOcclusionVerts = new LLVertexBuffer(LLVertexBuffer::MAP_VERTEX, 
 			LLVertexBuffer::sUseStreamDraw ? mBufferUsage : 0); //if GL has a hard time with VBOs, don't use them for occlusion culling.
@@ -726,7 +726,9 @@ void LLSpatialPartition::rebuildGeom(LLSpatialGroup* group)
 	if (vertex_count > 0 && index_count > 0)
 	{ //create vertex buffer containing volume geometry for this node
 		group->mBuilt = 1.f;
-		if (group->mVertexBuffer.isNull() || (group->mBufferUsage != group->mVertexBuffer->getUsage() && LLVertexBuffer::sEnableVBOs))
+		if (group->mVertexBuffer.isNull() ||
+			!group->mVertexBuffer->isWriteable() ||
+			(group->mBufferUsage != group->mVertexBuffer->getUsage() && LLVertexBuffer::sEnableVBOs))
 		{
 			group->mVertexBuffer = createVertexBuffer(mVertexDataMask, group->mBufferUsage);
 			group->mVertexBuffer->allocateBuffer(vertex_count, index_count, true);
@@ -1185,6 +1187,8 @@ void LLSpatialGroup::clearOcclusionState(U32 state, S32 mode)
 
 LLSpatialGroup::LLSpatialGroup(OctreeNode* node, LLSpatialPartition* part) :
 	mState(0),
+	mGeometryBytes(0),
+	mSurfaceArea(0.f),
 	mBuilt(0.f),
 	mOctreeNode(node),
 	mSpatialPartition(part),
@@ -1410,6 +1414,17 @@ void LLSpatialGroup::handleDestruction(const TreeNode* node)
 		}
 	}
 	
+	//clean up avatar attachment stats
+	LLSpatialBridge* bridge = mSpatialPartition->asBridge();
+	if (bridge)
+	{
+		if (bridge->mAvatar.notNull())
+		{
+			bridge->mAvatar->mAttachmentGeometryBytes -= mGeometryBytes;
+			bridge->mAvatar->mAttachmentSurfaceArea -= mSurfaceArea;
+		}
+	}
+
 	clearDrawMap();
 	mVertexBuffer = NULL;
 	mBufferMap.clear();
@@ -1765,7 +1780,7 @@ void LLSpatialGroup::doOcclusion(LLCamera* camera)
 //==============================================
 
 LLSpatialPartition::LLSpatialPartition(U32 data_mask, BOOL render_by_group, U32 buffer_usage)
-: mRenderByGroup(render_by_group)
+: mRenderByGroup(render_by_group), mBridge(NULL)
 {
 	LLMemType mt(LLMemType::MTYPE_SPACE_PARTITION);
 	mOcclusionEnabled = TRUE;
diff --git a/indra/newview/llspatialpartition.h b/indra/newview/llspatialpartition.h
index 899547ae4d..6c14ecf452 100644
--- a/indra/newview/llspatialpartition.h
+++ b/indra/newview/llspatialpartition.h
@@ -405,6 +405,9 @@ public:
 	bridge_list_t mBridgeList;
 	buffer_map_t mBufferMap; //used by volume buffers to attempt to reuse vertex buffers
 
+	U32 mGeometryBytes; //used by volumes to track how many bytes of geometry data are in this node
+	F32 mSurfaceArea; //used by volumes to track estimated surface area of geometry in this node
+
 	F32 mBuilt;
 	OctreeNode* mOctreeNode;
 	LLSpatialPartition* mSpatialPartition;
@@ -474,8 +477,8 @@ public:
 	BOOL isVisible(const LLVector3& v);
 	bool isHUDPartition() ;
 	
-	virtual LLSpatialBridge* asBridge() { return NULL; }
-	virtual BOOL isBridge() { return asBridge() != NULL; }
+	LLSpatialBridge* asBridge() { return mBridge; }
+	BOOL isBridge() { return asBridge() != NULL; }
 
 	void renderPhysicsShapes();
 	void renderDebug();
@@ -487,6 +490,9 @@ public:
 
 public:
 	LLSpatialGroup::OctreeNode* mOctree;
+	LLSpatialBridge* mBridge; // NULL for non-LLSpatialBridge instances, otherwise, mBridge == this
+							// use a pointer instead of making "isBridge" and "asBridge" virtual so it's safe
+							// to call asBridge() from the destructor
 	BOOL mOcclusionEnabled; // if TRUE, occlusion culling is performed
 	BOOL mInfiniteFarClip; // if TRUE, frustum culling ignores far clip plane
 	U32 mBufferUsage;
@@ -511,8 +517,9 @@ public:
 	
 	LLSpatialBridge(LLDrawable* root, BOOL render_by_group, U32 data_mask);
 	
-	virtual BOOL isSpatialBridge() const		{ return TRUE; }
+	void destroyTree();
 
+	virtual BOOL isSpatialBridge() const		{ return TRUE; }
 	virtual void updateSpatialExtents();
 	virtual void updateBinRadius();
 	virtual void setVisible(LLCamera& camera_in, std::vector<LLDrawable*>* results = NULL, BOOL for_select = FALSE);
@@ -523,11 +530,12 @@ public:
 	virtual void shiftPos(const LLVector4a& vec);
 	virtual void cleanupReferences();
 	virtual LLSpatialPartition* asPartition()		{ return this; }
-	virtual LLSpatialBridge* asBridge()				{ return this; }
-	
+		
 	virtual LLCamera transformCamera(LLCamera& camera);
 	
 	LLDrawable* mDrawable;
+	LLPointer<LLVOAvatar> mAvatar;
+
 };
 
 class LLCullResult 
diff --git a/indra/newview/lltexlayer.h b/indra/newview/lltexlayer.h
index 85dadb213c..4f43547dae 100644
--- a/indra/newview/lltexlayer.h
+++ b/indra/newview/lltexlayer.h
@@ -261,6 +261,8 @@ private:
 //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 class LLTexLayerSetBuffer : public LLViewerDynamicTexture
 {
+	LOG_CLASS(LLTexLayerSetBuffer);
+
 public:
 	LLTexLayerSetBuffer(LLTexLayerSet* const owner, S32 width, S32 height);
 	virtual ~LLTexLayerSetBuffer();
diff --git a/indra/newview/llviewerdisplay.cpp b/indra/newview/llviewerdisplay.cpp
index cb40af7061..0adb187dd2 100644
--- a/indra/newview/llviewerdisplay.cpp
+++ b/indra/newview/llviewerdisplay.cpp
@@ -260,6 +260,9 @@ void display(BOOL rebuild, F32 zoom_factor, int subfield, BOOL for_snapshot)
 
 	gPipeline.disableLights();
 	
+	//reset vertex buffers if needed
+	gPipeline.doResetVertexBuffers();
+
 	stop_glerror();
 
 	// Don't draw if the window is hidden or minimized.
diff --git a/indra/newview/llviewerjointmesh.cpp b/indra/newview/llviewerjointmesh.cpp
index 76f4e18c27..e052e37393 100644
--- a/indra/newview/llviewerjointmesh.cpp
+++ b/indra/newview/llviewerjointmesh.cpp
@@ -63,7 +63,6 @@ extern PFNGLWEIGHTFVARBPROC glWeightfvARB;
 extern PFNGLVERTEXBLENDARBPROC glVertexBlendARB;
 #endif
 
-static LLPointer<LLVertexBuffer> sRenderBuffer = NULL;
 static const U32 sRenderMask = LLVertexBuffer::MAP_VERTEX |
 							   LLVertexBuffer::MAP_NORMAL |
 							   LLVertexBuffer::MAP_TEXCOORD0;
diff --git a/indra/newview/llviewermenu.cpp b/indra/newview/llviewermenu.cpp
index 67f6150dbe..99540ccce9 100644
--- a/indra/newview/llviewermenu.cpp
+++ b/indra/newview/llviewermenu.cpp
@@ -947,6 +947,10 @@ U32 info_display_from_string(std::string info_display)
 	{
 		return LLPipeline::RENDER_DEBUG_COMPOSITION;
 	}
+	else if ("attachment bytes" == info_display)
+	{
+		return LLPipeline::RENDER_DEBUG_ATTACHMENT_BYTES;
+	}
 	else if ("glow" == info_display)
 	{
 		return LLPipeline::RENDER_DEBUG_GLOW;
diff --git a/indra/newview/llviewermenufile.cpp b/indra/newview/llviewermenufile.cpp
index 7e830e14bf..cacb8a8766 100644
--- a/indra/newview/llviewermenufile.cpp
+++ b/indra/newview/llviewermenufile.cpp
@@ -949,11 +949,12 @@ void upload_done_callback(
 			args["REASON"] = std::string(LLAssetStorage::getErrorString(result));
 			LLNotificationsUtil::add("CannotUploadReason", args);
 		}
+
+		delete data;
+		data = NULL;
 	}
 
 	LLUploadDialog::modalUploadFinished();
-	delete data;
-	data = NULL;
 
 	// *NOTE: This is a pretty big hack. What this does is check the
 	// file picker if there are any more pending uploads. If so,
diff --git a/indra/newview/llviewerobject.cpp b/indra/newview/llviewerobject.cpp
index b8772971aa..37fb77a10a 100644
--- a/indra/newview/llviewerobject.cpp
+++ b/indra/newview/llviewerobject.cpp
@@ -5520,11 +5520,12 @@ void LLViewerObject::dirtyMesh()
 {
 	if (mDrawable)
 	{
-		LLSpatialGroup* group = mDrawable->getSpatialGroup();
+		gPipeline.markRebuild(mDrawable, LLDrawable::REBUILD_ALL);
+		/*LLSpatialGroup* group = mDrawable->getSpatialGroup();
 		if (group)
 		{
 			group->dirtyMesh();
-		}
+		}*/
 	}
 }
 
diff --git a/indra/newview/llviewershadermgr.cpp b/indra/newview/llviewershadermgr.cpp
index 5de363e03c..10c61c01d5 100644
--- a/indra/newview/llviewershadermgr.cpp
+++ b/indra/newview/llviewershadermgr.cpp
@@ -363,6 +363,12 @@ void LLViewerShaderMgr::setShaders()
 	//NEVER use more than 16 texture channels (work around for prevalent driver bug)
 	LLGLSLShader::sIndexedTextureChannels = llmin(LLGLSLShader::sIndexedTextureChannels, 16);
 
+	if (gGLManager.mGLSLVersionMajor < 1 ||
+		(gGLManager.mGLSLVersionMajor == 1 && gGLManager.mGLSLVersionMinor <= 20))
+	{ //NEVER use indexed texture rendering when GLSL version is 1.20 or earlier
+		LLGLSLShader::sIndexedTextureChannels = 1;
+	}
+
 	reentrance = true;
 
 	if (LLRender::sGLCoreProfile)
@@ -407,6 +413,8 @@ void LLViewerShaderMgr::setShaders()
 
 	// Shaders
 	LL_INFOS("ShaderLoading") << "\n~~~~~~~~~~~~~~~~~~\n Loading Shaders:\n~~~~~~~~~~~~~~~~~~" << LL_ENDL;
+	LL_INFOS("ShaderLoading") << llformat("Using GLSL %d.%d", gGLManager.mGLSLVersionMajor, gGLManager.mGLSLVersionMinor) << llendl;
+
 	for (S32 i = 0; i < SHADER_COUNT; i++)
 	{
 		mVertexShaderLevel[i] = 0;
@@ -416,6 +424,7 @@ void LLViewerShaderMgr::setShaders()
 	LLGLSLShader::sNoFixedFunction = false;
 	LLVertexBuffer::unbind();
 	if (LLFeatureManager::getInstance()->isFeatureAvailable("VertexShaderEnable") 
+		&& (gGLManager.mGLSLVersionMajor > 1 || gGLManager.mGLSLVersionMinor >= 10)
 		&& gSavedSettings.getBOOL("VertexShaderEnable"))
 	{
 		//using shaders, disable fixed function
@@ -730,7 +739,7 @@ BOOL LLViewerShaderMgr::loadBasicShaders()
 
 	vector< pair<string, S32> > shaders;
 	shaders.push_back( make_pair( "windlight/atmosphericsVarsV.glsl",		mVertexShaderLevel[SHADER_WINDLIGHT] ) );
-	shaders.push_back( make_pair( "windlight/atmosphericsVarsWaterV.glsl",		mVertexShaderLevel[SHADER_WINDLIGHT] ) );
+	shaders.push_back( make_pair( "windlight/atmosphericsVarsWaterV.glsl",	mVertexShaderLevel[SHADER_WINDLIGHT] ) );
 	shaders.push_back( make_pair( "windlight/atmosphericsHelpersV.glsl",	mVertexShaderLevel[SHADER_WINDLIGHT] ) );
 	shaders.push_back( make_pair( "lighting/lightFuncV.glsl",				mVertexShaderLevel[SHADER_LIGHTING] ) );
 	shaders.push_back( make_pair( "lighting/sumLightsV.glsl",				sum_lights_class ) );
@@ -741,7 +750,10 @@ BOOL LLViewerShaderMgr::loadBasicShaders()
 	shaders.push_back( make_pair( "windlight/atmosphericsV.glsl",			mVertexShaderLevel[SHADER_WINDLIGHT] ) );
 	shaders.push_back( make_pair( "avatar/avatarSkinV.glsl",				1 ) );
 	shaders.push_back( make_pair( "avatar/objectSkinV.glsl",				1 ) );
-	shaders.push_back( make_pair( "objects/indexedTextureV.glsl",			1 ) );
+	if (gGLManager.mGLSLVersionMajor >= 2 || gGLManager.mGLSLVersionMinor >= 30)
+	{
+		shaders.push_back( make_pair( "objects/indexedTextureV.glsl",			1 ) );
+	}
 	shaders.push_back( make_pair( "objects/nonindexedTextureV.glsl",		1 ) );
 
 	// We no longer have to bind the shaders to global glhandles, they are automatically added to a map now.
@@ -758,11 +770,11 @@ BOOL LLViewerShaderMgr::loadBasicShaders()
 	// (in order of shader function call depth for reference purposes, deepest level first)
 
 	shaders.clear();
-	S32 ch = llmax(LLGLSLShader::sIndexedTextureChannels-1, 1);
+	S32 ch = 1;
 
-	if (gGLManager.mGLVersion < 3.1f)
-	{ //force to 1 texture index channel for old drivers
-		ch = 1;
+	if (gGLManager.mGLSLVersionMajor > 1 || gGLManager.mGLSLVersionMinor >= 30)
+	{ //use indexed texture rendering for GLSL >= 1.30
+		ch = llmax(LLGLSLShader::sIndexedTextureChannels-1, 1);
 	}
 
 	std::vector<S32> index_channels;
@@ -1102,19 +1114,25 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
 	if (success)
 	{
 		gDeferredSkinnedAlphaProgram.mName = "Deferred Skinned Alpha Shader";
+		gDeferredSkinnedAlphaProgram.mFeatures.atmosphericHelpers = true;
 		gDeferredSkinnedAlphaProgram.mFeatures.hasObjectSkinning = true;
 		gDeferredSkinnedAlphaProgram.mFeatures.calculatesAtmospherics = true;
 		gDeferredSkinnedAlphaProgram.mFeatures.hasGamma = true;
 		gDeferredSkinnedAlphaProgram.mFeatures.hasAtmospherics = true;
-		gDeferredSkinnedAlphaProgram.mFeatures.calculatesLighting = true;
-		gDeferredSkinnedAlphaProgram.mFeatures.hasLighting = true;
+		gDeferredSkinnedAlphaProgram.mFeatures.calculatesLighting = false;
+		gDeferredSkinnedAlphaProgram.mFeatures.hasLighting = false;
 		gDeferredSkinnedAlphaProgram.mFeatures.isAlphaLighting = true;
 		gDeferredSkinnedAlphaProgram.mFeatures.disableTextureIndex = true;
 		gDeferredSkinnedAlphaProgram.mShaderFiles.clear();
 		gDeferredSkinnedAlphaProgram.mShaderFiles.push_back(make_pair("deferred/alphaSkinnedV.glsl", GL_VERTEX_SHADER_ARB));
 		gDeferredSkinnedAlphaProgram.mShaderFiles.push_back(make_pair("deferred/alphaNonIndexedF.glsl", GL_FRAGMENT_SHADER_ARB));
 		gDeferredSkinnedAlphaProgram.mShaderLevel = mVertexShaderLevel[SHADER_DEFERRED];
+		
 		success = gDeferredSkinnedAlphaProgram.createShader(NULL, NULL);
+		
+		// Hack to include uniforms for lighting without linking in lighting file
+		gDeferredSkinnedAlphaProgram.mFeatures.calculatesLighting = true;
+		gDeferredSkinnedAlphaProgram.mFeatures.hasLighting = true;
 	}
 
 	if (success)
@@ -1200,6 +1218,7 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
 	if (success)
 	{
 		std::string fragment;
+		std::string vertex = "deferred/sunLightV.glsl";
 
 		if (gSavedSettings.getBOOL("RenderDeferredSSAO"))
 		{
@@ -1208,11 +1227,15 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
 		else
 		{
 			fragment = "deferred/sunLightF.glsl";
+			if (mVertexShaderLevel[SHADER_DEFERRED] == 1)
+			{ //no shadows, no SSAO, no frag coord
+				vertex = "deferred/sunLightNoFragCoordV.glsl";
+			}
 		}
 
 		gDeferredSunProgram.mName = "Deferred Sun Shader";
 		gDeferredSunProgram.mShaderFiles.clear();
-		gDeferredSunProgram.mShaderFiles.push_back(make_pair("deferred/sunLightV.glsl", GL_VERTEX_SHADER_ARB));
+		gDeferredSunProgram.mShaderFiles.push_back(make_pair(vertex, GL_VERTEX_SHADER_ARB));
 		gDeferredSunProgram.mShaderFiles.push_back(make_pair(fragment, GL_FRAGMENT_SHADER_ARB));
 		gDeferredSunProgram.mShaderLevel = mVertexShaderLevel[SHADER_DEFERRED];
 		success = gDeferredSunProgram.createShader(NULL, NULL);
@@ -1231,11 +1254,12 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
 	if (success)
 	{
 		gDeferredAlphaProgram.mName = "Deferred Alpha Shader";
-		gDeferredAlphaProgram.mFeatures.calculatesLighting = true;
+		gDeferredAlphaProgram.mFeatures.atmosphericHelpers = true;
+		gDeferredAlphaProgram.mFeatures.calculatesLighting = false;
 		gDeferredAlphaProgram.mFeatures.calculatesAtmospherics = true;
 		gDeferredAlphaProgram.mFeatures.hasGamma = true;
 		gDeferredAlphaProgram.mFeatures.hasAtmospherics = true;
-		gDeferredAlphaProgram.mFeatures.hasLighting = true;
+		gDeferredAlphaProgram.mFeatures.hasLighting = false;
 		gDeferredAlphaProgram.mFeatures.isAlphaLighting = true;
 		gDeferredAlphaProgram.mFeatures.disableTextureIndex = true; //hack to disable auto-setup of texture channels
 		if (mVertexShaderLevel[SHADER_DEFERRED] < 1)
@@ -1251,7 +1275,12 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
 		gDeferredAlphaProgram.mShaderFiles.push_back(make_pair("deferred/alphaV.glsl", GL_VERTEX_SHADER_ARB));
 		gDeferredAlphaProgram.mShaderFiles.push_back(make_pair("deferred/alphaF.glsl", GL_FRAGMENT_SHADER_ARB));
 		gDeferredAlphaProgram.mShaderLevel = mVertexShaderLevel[SHADER_DEFERRED];
+
 		success = gDeferredAlphaProgram.createShader(NULL, NULL);
+
+		// Hack
+		gDeferredAlphaProgram.mFeatures.calculatesLighting = true;
+		gDeferredAlphaProgram.mFeatures.hasLighting = true;
 	}
 
 	if (success)
@@ -1394,19 +1423,24 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
 	if (success)
 	{
 		gDeferredAvatarAlphaProgram.mName = "Avatar Alpha Shader";
+		gDeferredAvatarAlphaProgram.mFeatures.atmosphericHelpers = true;
 		gDeferredAvatarAlphaProgram.mFeatures.hasSkinning = true;
-		gDeferredAvatarAlphaProgram.mFeatures.calculatesLighting = true;
+		gDeferredAvatarAlphaProgram.mFeatures.calculatesLighting = false;
 		gDeferredAvatarAlphaProgram.mFeatures.calculatesAtmospherics = true;
 		gDeferredAvatarAlphaProgram.mFeatures.hasGamma = true;
 		gDeferredAvatarAlphaProgram.mFeatures.hasAtmospherics = true;
-		gDeferredAvatarAlphaProgram.mFeatures.hasLighting = true;
+		gDeferredAvatarAlphaProgram.mFeatures.hasLighting = false;
 		gDeferredAvatarAlphaProgram.mFeatures.isAlphaLighting = true;
 		gDeferredAvatarAlphaProgram.mFeatures.disableTextureIndex = true;
 		gDeferredAvatarAlphaProgram.mShaderFiles.clear();
-		gDeferredAvatarAlphaProgram.mShaderFiles.push_back(make_pair("deferred/avatarAlphaV.glsl", GL_VERTEX_SHADER_ARB));
+		gDeferredAvatarAlphaProgram.mShaderFiles.push_back(make_pair("deferred/avatarAlphaNoColorV.glsl", GL_VERTEX_SHADER_ARB));
 		gDeferredAvatarAlphaProgram.mShaderFiles.push_back(make_pair("deferred/alphaNonIndexedNoColorF.glsl", GL_FRAGMENT_SHADER_ARB));
 		gDeferredAvatarAlphaProgram.mShaderLevel = mVertexShaderLevel[SHADER_DEFERRED];
+
 		success = gDeferredAvatarAlphaProgram.createShader(NULL, &mAvatarUniforms);
+
+		gDeferredAvatarAlphaProgram.mFeatures.calculatesLighting = true;
+		gDeferredAvatarAlphaProgram.mFeatures.hasLighting = true;
 	}
 
 	if (success)
@@ -1423,7 +1457,7 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
 	{
 		gDeferredPostProgram.mName = "Deferred Post Shader";
 		gDeferredPostProgram.mShaderFiles.clear();
-		gDeferredPostProgram.mShaderFiles.push_back(make_pair("deferred/postDeferredV.glsl", GL_VERTEX_SHADER_ARB));
+		gDeferredPostProgram.mShaderFiles.push_back(make_pair("deferred/postDeferredNoTCV.glsl", GL_VERTEX_SHADER_ARB));
 		gDeferredPostProgram.mShaderFiles.push_back(make_pair("deferred/postDeferredF.glsl", GL_FRAGMENT_SHADER_ARB));
 		gDeferredPostProgram.mShaderLevel = mVertexShaderLevel[SHADER_DEFERRED];
 		success = gDeferredPostProgram.createShader(NULL, NULL);
@@ -1433,7 +1467,7 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
 	{
 		gDeferredCoFProgram.mName = "Deferred CoF Shader";
 		gDeferredCoFProgram.mShaderFiles.clear();
-		gDeferredCoFProgram.mShaderFiles.push_back(make_pair("deferred/postDeferredV.glsl", GL_VERTEX_SHADER_ARB));
+		gDeferredCoFProgram.mShaderFiles.push_back(make_pair("deferred/postDeferredNoTCV.glsl", GL_VERTEX_SHADER_ARB));
 		gDeferredCoFProgram.mShaderFiles.push_back(make_pair("deferred/cofF.glsl", GL_FRAGMENT_SHADER_ARB));
 		gDeferredCoFProgram.mShaderLevel = mVertexShaderLevel[SHADER_DEFERRED];
 		success = gDeferredCoFProgram.createShader(NULL, NULL);
@@ -1443,7 +1477,7 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
 	{
 		gDeferredDoFCombineProgram.mName = "Deferred DoFCombine Shader";
 		gDeferredDoFCombineProgram.mShaderFiles.clear();
-		gDeferredDoFCombineProgram.mShaderFiles.push_back(make_pair("deferred/postDeferredV.glsl", GL_VERTEX_SHADER_ARB));
+		gDeferredDoFCombineProgram.mShaderFiles.push_back(make_pair("deferred/postDeferredNoTCV.glsl", GL_VERTEX_SHADER_ARB));
 		gDeferredDoFCombineProgram.mShaderFiles.push_back(make_pair("deferred/dofCombineF.glsl", GL_FRAGMENT_SHADER_ARB));
 		gDeferredDoFCombineProgram.mShaderLevel = mVertexShaderLevel[SHADER_DEFERRED];
 		success = gDeferredDoFCombineProgram.createShader(NULL, NULL);
@@ -1453,7 +1487,7 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
 	{
 		gDeferredPostNoDoFProgram.mName = "Deferred Post Shader";
 		gDeferredPostNoDoFProgram.mShaderFiles.clear();
-		gDeferredPostNoDoFProgram.mShaderFiles.push_back(make_pair("deferred/postDeferredV.glsl", GL_VERTEX_SHADER_ARB));
+		gDeferredPostNoDoFProgram.mShaderFiles.push_back(make_pair("deferred/postDeferredNoTCV.glsl", GL_VERTEX_SHADER_ARB));
 		gDeferredPostNoDoFProgram.mShaderFiles.push_back(make_pair("deferred/postDeferredNoDoFF.glsl", GL_FRAGMENT_SHADER_ARB));
 		gDeferredPostNoDoFProgram.mShaderLevel = mVertexShaderLevel[SHADER_DEFERRED];
 		success = gDeferredPostNoDoFProgram.createShader(NULL, NULL);
diff --git a/indra/newview/llviewertexture.cpp b/indra/newview/llviewertexture.cpp
index 61236edc86..51737149ef 100644
--- a/indra/newview/llviewertexture.cpp
+++ b/indra/newview/llviewertexture.cpp
@@ -3290,10 +3290,14 @@ LLViewerMediaTexture::LLViewerMediaTexture(const LLUUID& id, BOOL usemipmaps, LL
 	sMediaMap.insert(std::make_pair(id, this));
 
 	mGLTexturep = gl_image ;
+
 	if(mGLTexturep.isNull())
 	{
 		generateGLTexture() ;
 	}
+
+	mGLTexturep->setAllowCompression(false);
+
 	mGLTexturep->setNeedsAlphaAndPickMask(FALSE) ;
 
 	mIsPlaying = FALSE ;
diff --git a/indra/newview/llviewertexture.h b/indra/newview/llviewertexture.h
index b96441127d..af8afef203 100644
--- a/indra/newview/llviewertexture.h
+++ b/indra/newview/llviewertexture.h
@@ -263,6 +263,9 @@ protected:
 	void reorganizeVolumeList() ;
 	void setTexelsPerImage();
 private:
+	friend class LLBumpImageList;
+	friend class LLUIImageList;
+
 	//note: do not make this function public.
 	/*virtual*/ LLImageGL* getGLTexture() const ;
 	virtual void switchToCachedImage();
diff --git a/indra/newview/llviewertexturelist.cpp b/indra/newview/llviewertexturelist.cpp
index 089f45ca89..f1555388a2 100644
--- a/indra/newview/llviewertexturelist.cpp
+++ b/indra/newview/llviewertexturelist.cpp
@@ -1432,6 +1432,9 @@ LLUIImagePtr LLUIImageList::loadUIImage(LLViewerFetchedTexture* imagep, const st
 
 	imagep->setAddressMode(LLTexUnit::TAM_CLAMP);
 
+	//don't compress UI images
+	imagep->getGLTexture()->setAllowCompression(false);
+
 	//all UI images are non-deletable
 	imagep->setNoDelete();
 
diff --git a/indra/newview/llviewerwindow.cpp b/indra/newview/llviewerwindow.cpp
index bf698e02d2..0979e47c7c 100644
--- a/indra/newview/llviewerwindow.cpp
+++ b/indra/newview/llviewerwindow.cpp
@@ -613,7 +613,9 @@ public:
 				
 				addText(xpos, ypos, llformat("%d/%d Mesh HTTP Requests/Retries", LLMeshRepository::sHTTPRequestCount,
 					LLMeshRepository::sHTTPRetryCount));
-				
+				ypos += y_inc;
+
+				addText(xpos, ypos, llformat("%d/%d Mesh LOD Pending/Processing", LLMeshRepository::sLODPending, LLMeshRepository::sLODProcessing));
 				ypos += y_inc;
 
 				addText(xpos, ypos, llformat("%.3f/%.3f MB Mesh Cache Read/Write ", LLMeshRepository::sCacheBytesRead/(1024.f*1024.f), LLMeshRepository::sCacheBytesWritten/(1024.f*1024.f)));
@@ -749,8 +751,9 @@ public:
 			LLSelectNode* nodep = LLSelectMgr::instance().getHoverNode();
 			if (nodep)
 			{
-				objectp = nodep->getObject();			
+				objectp = nodep->getObject();
 			}
+
 			if (objectp && !objectp->isDead())
 			{
 				S32 num_faces = objectp->mDrawable->getNumFaces() ;
@@ -764,8 +767,8 @@ public:
 						//		facep->mTexExtents[0].mV[1], facep->mTexExtents[1].mV[1]));
 						//ypos += y_inc;
 						
-						addText(xpos, ypos, llformat("v_size: %.3f:  p_size: %.3f", facep->getVirtualSize(), facep->getPixelArea()));
-						ypos += y_inc;
+						//addText(xpos, ypos, llformat("v_size: %.3f:  p_size: %.3f", facep->getVirtualSize(), facep->getPixelArea()));
+						//ypos += y_inc;
 						
 						//const LLTextureEntry *tep = facep->getTextureEntry();
 						//if(tep)
@@ -774,11 +777,15 @@ public:
 						//	ypos += y_inc;
 						//}
 						
-						LLViewerTexture* tex = facep->getTexture() ;
+						LLViewerFetchedTexture* tex = dynamic_cast<LLViewerFetchedTexture*>(facep->getTexture()) ;
 						if(tex)
 						{
 							addText(xpos, ypos, llformat("ID: %s v_size: %.3f", tex->getID().asString().c_str(), tex->getMaxVirtualSize()));
 							ypos += y_inc;
+
+							addText(xpos, ypos, llformat("discard level: %d desired level: %d Missing: %s", tex->getDiscardLevel(), 
+								tex->getDesiredDiscardLevel(), tex->isMissingAsset() ? "Y" : "N"));
+							ypos += y_inc;
 						}
 					}
 				}
@@ -1971,7 +1978,7 @@ void LLViewerWindow::shutdownViews()
 		gMorphView->setVisible(FALSE);
 	}
 	llinfos << "Global views cleaned." << llendl ;
-
+	
 	// DEV-40930: Clear sModalStack. Otherwise, any LLModalDialog left open
 	// will crump with LL_ERRS.
 	LLModalDialog::shutdownModals();
@@ -1984,17 +1991,17 @@ void LLViewerWindow::shutdownViews()
 		delete LLNavigationBar::getInstance();
 	}
 	llinfos << "LLNavigationBar destroyed." << llendl ;
-
+	
 	// destroy menus after instantiating navbar above, as it needs
 	// access to gMenuHolder
 	cleanup_menus();
 	llinfos << "menus destroyed." << llendl ;
-
+	
 	// Delete all child views.
 	delete mRootView;
 	mRootView = NULL;
 	llinfos << "RootView deleted." << llendl ;
-
+	
 	// Automatically deleted as children of mRootView.  Fix the globals.
 	gStatusBar = NULL;
 	gIMMgr = NULL;
@@ -2019,6 +2026,12 @@ void LLViewerWindow::shutdownGL()
 	gSky.cleanup();
 	stop_glerror();
 
+	llinfos << "Cleaning up pipeline" << llendl;
+	gPipeline.cleanup();
+	stop_glerror();
+
+	//MUST clean up pipeline before cleaning up wearables
+	llinfos << "Cleaning up wearables" << llendl;
 	LLWearableList::instance().cleanup() ;
 
 	gTextureList.shutdown();
@@ -2029,10 +2042,6 @@ void LLViewerWindow::shutdownGL()
 
 	LLWorldMapView::cleanupTextures();
 
-	llinfos << "Cleaning up pipeline" << llendl;
-	gPipeline.cleanup();
-	stop_glerror();
-
 	LLViewerTextureManager::cleanup() ;
 	LLImageGL::cleanupClass() ;
 
diff --git a/indra/newview/llvoavatar.cpp b/indra/newview/llvoavatar.cpp
index 68637a7ed9..7cbb47100d 100644
--- a/indra/newview/llvoavatar.cpp
+++ b/indra/newview/llvoavatar.cpp
@@ -651,6 +651,8 @@ LLVOAvatar::LLVOAvatar(const LLUUID& id,
 	LLViewerObject(id, pcode, regionp),
 	mIsDummy(FALSE),
 	mSpecialRenderMode(0),
+	mAttachmentGeometryBytes(0),
+	mAttachmentSurfaceArea(0.f),
 	mTurning(FALSE),
 	mPelvisToFoot(0.f),
 	mLastSkeletonSerialNum( 0 ),
@@ -3363,6 +3365,16 @@ void LLVOAvatar::slamPosition()
 	mRoot.updateWorldMatrixChildren();
 }
 
+bool LLVOAvatar::isVisuallyMuted() const
+{
+	static LLCachedControl<U32> max_attachment_bytes(gSavedSettings, "RenderAutoMuteByteLimit");
+	static LLCachedControl<F32> max_attachment_area(gSavedSettings, "RenderAutoMuteSurfaceAreaLimit");
+	
+	return LLMuteList::getInstance()->isMuted(getID()) ||
+			(mAttachmentGeometryBytes > max_attachment_bytes && max_attachment_bytes > 0) ||
+			(mAttachmentSurfaceArea > max_attachment_area && max_attachment_area > 0.f);
+}
+
 //------------------------------------------------------------------------
 // updateCharacter()
 // called on both your avatar and other avatars
@@ -3422,15 +3434,16 @@ BOOL LLVOAvatar::updateCharacter(LLAgent &agent)
 	// the rest should only be done occasionally for far away avatars
 	//--------------------------------------------------------------------
 
-	if (visible && !isSelf() && !mIsDummy && sUseImpostors && !mNeedsAnimUpdate && !sFreezeCounter)
+	if (visible && (!isSelf() || isVisuallyMuted()) && !mIsDummy && sUseImpostors && !mNeedsAnimUpdate && !sFreezeCounter)
 	{
 		const LLVector4a* ext = mDrawable->getSpatialExtents();
 		LLVector4a size;
 		size.setSub(ext[1],ext[0]);
 		F32 mag = size.getLength3().getF32()*0.5f;
 
+		
 		F32 impostor_area = 256.f*512.f*(8.125f - LLVOAvatar::sLODFactor*8.f);
-		if (LLMuteList::getInstance()->isMuted(getID()))
+		if (isVisuallyMuted())
 		{ // muted avatars update at 16 hz
 			mUpdatePeriod = 16;
 		}
@@ -3461,6 +3474,11 @@ BOOL LLVOAvatar::updateCharacter(LLAgent &agent)
 
 		visible = (LLDrawable::getCurrentFrame()+mID.mData[0])%mUpdatePeriod == 0 ? TRUE : FALSE;
 	}
+	else
+	{
+		mUpdatePeriod = 1;
+	}
+
 
 	// don't early out for your own avatar, as we rely on your animations playing reliably
 	// for example, the "turn around" animation when entering customize avatar needs to trigger
@@ -5016,7 +5034,7 @@ void LLVOAvatar::addDebugText(const std::string& text)
 //-----------------------------------------------------------------------------
 // getID()
 //-----------------------------------------------------------------------------
-const LLUUID& LLVOAvatar::getID()
+const LLUUID& LLVOAvatar::getID() const
 {
 	return mID;
 }
@@ -8283,7 +8301,7 @@ void LLVOAvatar::updateImpostors()
 
 BOOL LLVOAvatar::isImpostor() const
 {
-	return (sUseImpostors && mUpdatePeriod >= IMPOSTOR_PERIOD) ? TRUE : FALSE;
+	return (isVisuallyMuted() || (sUseImpostors && mUpdatePeriod >= IMPOSTOR_PERIOD)) ? TRUE : FALSE;
 }
 
 
@@ -8333,6 +8351,11 @@ void LLVOAvatar::idleUpdateRenderCost()
 
 	static std::set<LLUUID> all_textures;
 
+	if (gPipeline.hasRenderDebugMask(LLPipeline::RENDER_DEBUG_ATTACHMENT_BYTES))
+	{ //set debug text to attachment geometry bytes here so render cost will override
+		setDebugText(llformat("%.1f KB, %.2f m^2", mAttachmentGeometryBytes/1024.f, mAttachmentSurfaceArea));
+	}
+
 	if (!gPipeline.hasRenderDebugMask(LLPipeline::RENDER_DEBUG_SHAME))
 	{
 		return;
diff --git a/indra/newview/llvoavatar.h b/indra/newview/llvoavatar.h
index 59796370ae..6a4e09593c 100644
--- a/indra/newview/llvoavatar.h
+++ b/indra/newview/llvoavatar.h
@@ -78,6 +78,8 @@ class LLVOAvatar :
 	public LLCharacter,
 	public boost::signals2::trackable
 {
+	LOG_CLASS(LLVOAvatar);
+
 public:
 	friend class LLVOAvatarSelf;
 protected:
@@ -183,7 +185,7 @@ public:
 	void					resetSpecificJointPosition( const std::string& name );
 	
 	virtual const char*		getAnimationPrefix() { return "avatar"; }
-	virtual const LLUUID&   getID();
+	virtual const LLUUID&   getID() const;
 	virtual LLVector3		getVolumePos(S32 joint_index, LLVector3& volume_offset);
 	virtual LLJoint*		findCollisionVolume(U32 volume_id);
 	virtual S32				getCollisionVolumeID(std::string &name);
@@ -380,6 +382,8 @@ private:
 
 public:
 	U32 		renderImpostor(LLColor4U color = LLColor4U(255,255,255,255), S32 diffuse_channel = 0);
+	bool		isVisuallyMuted() const;
+
 	U32 		renderRigid();
 	U32 		renderSkinned(EAvatarRenderPass pass);
 	F32			getLastSkinTime() { return mLastSkinTime; }
@@ -391,6 +395,9 @@ public:
 	static void	restoreGL();
 	BOOL 		mIsDummy; // for special views
 	S32			mSpecialRenderMode; // special lighting
+	U32			mAttachmentGeometryBytes; //number of bytes in attached geometry
+	F32			mAttachmentSurfaceArea; //estimated surface area of attachments
+
 private:
 	bool		shouldAlphaMask();
 
diff --git a/indra/newview/llvoavatarself.cpp b/indra/newview/llvoavatarself.cpp
index 581912f844..e525d6bad0 100644
--- a/indra/newview/llvoavatarself.cpp
+++ b/indra/newview/llvoavatarself.cpp
@@ -66,10 +66,11 @@
 
 #include <boost/lexical_cast.hpp>
 
-LLVOAvatarSelf *gAgentAvatarp = NULL;
+LLPointer<LLVOAvatarSelf> gAgentAvatarp = NULL;
+
 BOOL isAgentAvatarValid()
 {
-	return (gAgentAvatarp &&
+	return (gAgentAvatarp.notNull() &&
 			(gAgentAvatarp->getRegion() != NULL) &&
 			(!gAgentAvatarp->isDead()));
 }
@@ -1574,7 +1575,7 @@ void LLVOAvatarSelf::invalidateAll()
 	{
 		invalidateComposite(mBakedTextureDatas[i].mTexLayerSet, TRUE);
 	}
-	mDebugSelfLoadTimer.reset();
+	//mDebugSelfLoadTimer.reset();
 }
 
 //-----------------------------------------------------------------------------
@@ -1896,11 +1897,13 @@ BOOL LLVOAvatarSelf::getIsCloud()
 		gAgentWearables.getWearableCount(LLWearableType::WT_EYES) == 0 ||
 		gAgentWearables.getWearableCount(LLWearableType::WT_SKIN) == 0)	
 	{
+		lldebugs << "No body parts" << llendl;
 		return TRUE;
 	}
 
 	if (!isTextureDefined(TEX_HAIR, 0))
 	{
+		lldebugs << "No hair texture" << llendl;
 		return TRUE;
 	}
 
@@ -1909,12 +1912,14 @@ BOOL LLVOAvatarSelf::getIsCloud()
 		if (!isLocalTextureDataAvailable(mBakedTextureDatas[BAKED_LOWER].mTexLayerSet) &&
 			(!isTextureDefined(TEX_LOWER_BAKED, 0)))
 		{
+			lldebugs << "Lower textures not baked" << llendl;
 			return TRUE;
 		}
 
 		if (!isLocalTextureDataAvailable(mBakedTextureDatas[BAKED_UPPER].mTexLayerSet) &&
 			(!isTextureDefined(TEX_UPPER_BAKED, 0)))
 		{
+			lldebugs << "Upper textures not baked" << llendl;
 			return TRUE;
 		}
 
@@ -1931,10 +1936,12 @@ BOOL LLVOAvatarSelf::getIsCloud()
 			const LLViewerTexture* baked_img = getImage( texture_data.mTextureIndex, 0 );
 			if (!baked_img || !baked_img->hasGLTexture())
 			{
+				lldebugs << "Texture at index " << i << " (texture index is " << texture_data.mTextureIndex << ") is not loaded" << llendl;
 				return TRUE;
 			}
 		}
 
+		lldebugs << "Avatar de-clouded" << llendl;
 	}
 	return FALSE;
 }
@@ -2258,6 +2265,7 @@ void LLVOAvatarSelf::setNewBakedTexture( ETextureIndex te, const LLUUID& uuid )
 	}
 }
 
+// FIXME: This is never called. Something may be broken.
 void LLVOAvatarSelf::outputRezDiagnostics() const
 {
 	if(!gSavedSettings.getBOOL("DebugAvatarLocalTexLoadedTime"))
@@ -2315,6 +2323,18 @@ void LLVOAvatarSelf::outputRezDiagnostics() const
 	}
 }
 
+void LLVOAvatarSelf::outputRezTiming(const std::string& msg) const
+{
+	LL_DEBUGS("Avatar Rez")
+		<< llformat("%s. Time from avatar creation: %.2f", msg.c_str(), mDebugSelfLoadTimer.getElapsedTimeF32())
+		<< llendl;
+}
+
+void LLVOAvatarSelf::reportAvatarRezTime() const
+{
+	// TODO: report mDebugSelfLoadTimer.getElapsedTimeF32() somehow.
+}
+
 //-----------------------------------------------------------------------------
 // setCachedBakedTexture()
 // A baked texture id was received from a cache query, make it active
diff --git a/indra/newview/llvoavatarself.h b/indra/newview/llvoavatarself.h
index 74ff47a3e4..655fb3a012 100644
--- a/indra/newview/llvoavatarself.h
+++ b/indra/newview/llvoavatarself.h
@@ -41,6 +41,7 @@ struct LocalTextureData;
 class LLVOAvatarSelf :
 	public LLVOAvatar
 {
+	LOG_CLASS(LLVOAvatarSelf);
 
 /********************************************************************************
  **                                                                            **
@@ -358,6 +359,8 @@ public:
 	void 					debugWearablesLoaded() { mDebugTimeWearablesLoaded = mDebugSelfLoadTimer.getElapsedTimeF32(); }
 	void 					debugAvatarVisible() { mDebugTimeAvatarVisible = mDebugSelfLoadTimer.getElapsedTimeF32(); }
 	void 					outputRezDiagnostics() const;
+	void					outputRezTiming(const std::string& msg) const;
+	void					reportAvatarRezTime() const;
 	void 					debugBakedTextureUpload(LLVOAvatarDefines::EBakedTextureIndex index, BOOL finished);
 	static void				debugOnTimingLocalTexLoaded(BOOL success, LLViewerFetchedTexture *src_vi, LLImageRaw* src, LLImageRaw* aux_src, S32 discard_level, BOOL final, void* userdata);
 
@@ -380,7 +383,7 @@ private:
 
 };
 
-extern LLVOAvatarSelf *gAgentAvatarp;
+extern LLPointer<LLVOAvatarSelf> gAgentAvatarp;
 
 BOOL isAgentAvatarValid();
 
diff --git a/indra/newview/llvosky.cpp b/indra/newview/llvosky.cpp
index e9db37821b..312034022e 100644
--- a/indra/newview/llvosky.cpp
+++ b/indra/newview/llvosky.cpp
@@ -342,7 +342,7 @@ LLVOSky::LLVOSky(const LLUUID &id, const LLPCode pcode, LLViewerRegion *regionp)
 	blue_density = LLColor3();
 	blue_horizon = LLColor3();
 	haze_density = 0.f;
-	haze_horizon = LLColor3();
+	haze_horizon = 1.f;
 	density_multiplier = 0.f;
 	max_y = 0.f;
 	glow = LLColor3();
@@ -651,17 +651,17 @@ void LLVOSky::initAtmospherics(void)
 	sunlight_color = LLColor3(LLWLParamManager::getInstance()->mCurParams.getVector("sunlight_color", error));
 	ambient = LLColor3(LLWLParamManager::getInstance()->mCurParams.getVector("ambient", error));
 	//lightnorm = LLWLParamManager::getInstance()->mCurParams.getVector("lightnorm", error);
-	gamma = LLWLParamManager::getInstance()->mCurParams.getVector("gamma", error)[0];
+	gamma = LLWLParamManager::getInstance()->mCurParams.getFloat("gamma", error);
 	blue_density = LLColor3(LLWLParamManager::getInstance()->mCurParams.getVector("blue_density", error));
 	blue_horizon = LLColor3(LLWLParamManager::getInstance()->mCurParams.getVector("blue_horizon", error));
-	haze_density = LLWLParamManager::getInstance()->mCurParams.getVector("haze_density", error)[0];
-	haze_horizon = LLColor3(LLWLParamManager::getInstance()->mCurParams.getVector("haze_horizon", error));
-	density_multiplier = LLWLParamManager::getInstance()->mCurParams.getVector("density_multiplier", error)[0];
-	max_y = LLWLParamManager::getInstance()->mCurParams.getVector("max_y", error)[0];
+	haze_density = LLWLParamManager::getInstance()->mCurParams.getFloat("haze_density", error);
+	haze_horizon = LLWLParamManager::getInstance()->mCurParams.getFloat("haze_horizon", error);
+	density_multiplier = LLWLParamManager::getInstance()->mCurParams.getFloat("density_multiplier", error);
+	max_y = LLWLParamManager::getInstance()->mCurParams.getFloat("max_y", error);
 	glow = LLColor3(LLWLParamManager::getInstance()->mCurParams.getVector("glow", error));
-	cloud_shadow = LLWLParamManager::getInstance()->mCurParams.getVector("cloud_shadow", error)[0];
+	cloud_shadow = LLWLParamManager::getInstance()->mCurParams.getFloat("cloud_shadow", error);
 	cloud_color = LLColor3(LLWLParamManager::getInstance()->mCurParams.getVector("cloud_color", error));
-	cloud_scale = LLWLParamManager::getInstance()->mCurParams.getVector("cloud_scale", error)[0];
+	cloud_scale = LLWLParamManager::getInstance()->mCurParams.getFloat("cloud_scale", error);
 	cloud_pos_density1 = LLColor3(LLWLParamManager::getInstance()->mCurParams.getVector("cloud_pos_density1", error));
 	cloud_pos_density2 = LLColor3(LLWLParamManager::getInstance()->mCurParams.getVector("cloud_pos_density2", error));
 
@@ -825,7 +825,7 @@ void LLVOSky::calcSkyColorWLVert(LLVector3 & Pn, LLColor3 & vary_HazeColor, LLCo
 
 	// Haze color above cloud
 	vary_HazeColor = (blue_horizon * blue_weight * (sunlight + ambient)
-				+ componentMult(haze_horizon.mV[0] * haze_weight, sunlight * temp2.mV[0] + ambient)
+				+ componentMult(haze_horizon * haze_weight, sunlight * temp2.mV[0] + ambient)
 			 );	
 
 	// Increase ambient when there are more clouds
@@ -836,7 +836,7 @@ void LLVOSky::calcSkyColorWLVert(LLVector3 & Pn, LLColor3 & vary_HazeColor, LLCo
 
 	// Haze color below cloud
 	LLColor3 additiveColorBelowCloud = (blue_horizon * blue_weight * (sunlight + tmpAmbient)
-				+ componentMult(haze_horizon.mV[0] * haze_weight, sunlight * temp2.mV[0] + tmpAmbient)
+				+ componentMult(haze_horizon * haze_weight, sunlight * temp2.mV[0] + tmpAmbient)
 			 );	
 
 	// Final atmosphere additive
@@ -1002,7 +1002,7 @@ void LLVOSky::calcAtmospherics(void)
 		//haze color
 		vary_HazeColor =
 			(blue_horizon * blue_weight * (sunlight*(1.f - cloud_shadow) + tmpAmbient)	
-			+ componentMult(haze_horizon.mV[0] * haze_weight, sunlight*(1.f - cloud_shadow) * temp2.mV[0] + tmpAmbient)
+			+ componentMult(haze_horizon * haze_weight, sunlight*(1.f - cloud_shadow) * temp2.mV[0] + tmpAmbient)
 				 );	
 
 		//brightness of surface both sunlight and ambient
diff --git a/indra/newview/llvosky.h b/indra/newview/llvosky.h
index d3a42583ea..6e6898d80a 100644
--- a/indra/newview/llvosky.h
+++ b/indra/newview/llvosky.h
@@ -410,7 +410,7 @@ public:
 	LLColor3 blue_density;
 	LLColor3 blue_horizon;
 	F32 haze_density;
-	LLColor3 haze_horizon;
+	F32 haze_horizon;
 	F32 density_multiplier;
 	F32 max_y;
 	LLColor3 glow;
diff --git a/indra/newview/llvosurfacepatch.cpp b/indra/newview/llvosurfacepatch.cpp
index c3a2e6a712..bf6158eeaf 100644
--- a/indra/newview/llvosurfacepatch.cpp
+++ b/indra/newview/llvosurfacepatch.cpp
@@ -65,7 +65,7 @@ public:
 			return;
 		}
 
-		U8* base = useVBOs() ? (U8*) mAlignedOffset : mMappedData;
+		volatile U8* base = useVBOs() ? (U8*) mAlignedOffset : mMappedData;
 
 		//assume tex coords 2 and 3 are present
 		U32 type_mask = mTypeMask | MAP_TEXCOORD2 | MAP_TEXCOORD3;
diff --git a/indra/newview/llvovolume.cpp b/indra/newview/llvovolume.cpp
index 20f8674655..e7c35d8220 100644
--- a/indra/newview/llvovolume.cpp
+++ b/indra/newview/llvovolume.cpp
@@ -4097,6 +4097,32 @@ void LLVolumeGeometryManager::rebuildGeom(LLSpatialGroup* group)
 
 	LLFastTimer ftm2(FTM_REBUILD_VOLUME_VB);
 
+	LLVOAvatar* pAvatarVO = NULL;
+
+	LLSpatialBridge* bridge = group->mSpatialPartition->asBridge();
+	if (bridge)
+	{
+		if (bridge->mAvatar.isNull())
+		{
+			LLViewerObject* vobj = bridge->mDrawable->getVObj();
+			if (vobj)
+			{
+				bridge->mAvatar = vobj->getAvatar();
+			}
+		}
+
+		pAvatarVO = bridge->mAvatar;
+	}
+
+	if (pAvatarVO)
+	{
+		pAvatarVO->mAttachmentGeometryBytes -= group->mGeometryBytes;
+		pAvatarVO->mAttachmentSurfaceArea -= group->mSurfaceArea;
+	}
+
+	group->mGeometryBytes = 0;
+	group->mSurfaceArea = 0;
+	
 	group->clearDrawMap();
 
 	mFaceList.clear();
@@ -4133,12 +4159,24 @@ void LLVolumeGeometryManager::rebuildGeom(LLSpatialGroup* group)
 
 		LLVOVolume* vobj = drawablep->getVOVolume();
 
+		if (!vobj)
+		{
+			continue;
+		}
+
 		if (vobj->isMesh() &&
 			(vobj->getVolume() && !vobj->getVolume()->isMeshAssetLoaded() || !gMeshRepo.meshRezEnabled()))
 		{
 			continue;
 		}
 
+		LLVolume* volume = vobj->getVolume();
+		if (volume)
+		{
+			const LLVector3& scale = vobj->getScale();
+			group->mSurfaceArea += volume->getSurfaceArea() * llmax(llmax(scale.mV[0], scale.mV[1]), scale.mV[2]);
+		}
+
 		llassert_always(vobj);
 		vobj->updateTextureVirtualSize(true);
 		vobj->preRebuild();
@@ -4183,7 +4221,6 @@ void LLVolumeGeometryManager::rebuildGeom(LLSpatialGroup* group)
 				//Determine if we've received skininfo that contains an
 				//alternate bind matrix - if it does then apply the translational component
 				//to the joints of the avatar.
-				LLVOAvatar* pAvatarVO = vobj->getAvatar();
 				bool pelvisGotSet = false;
 
 				if ( pAvatarVO )
@@ -4253,13 +4290,16 @@ void LLVolumeGeometryManager::rebuildGeom(LLSpatialGroup* group)
 
 					if (type == LLDrawPool::POOL_ALPHA)
 					{
-						if (te->getFullbright())
+						if (te->getColor().mV[3] > 0.f)
 						{
-							pool->addRiggedFace(facep, LLDrawPoolAvatar::RIGGED_FULLBRIGHT_ALPHA);
-						}
-						else
-						{
-							pool->addRiggedFace(facep, LLDrawPoolAvatar::RIGGED_ALPHA);
+							if (te->getFullbright())
+							{
+								pool->addRiggedFace(facep, LLDrawPoolAvatar::RIGGED_FULLBRIGHT_ALPHA);
+							}
+							else
+							{
+								pool->addRiggedFace(facep, LLDrawPoolAvatar::RIGGED_ALPHA);
+							}
 						}
 					}
 					else if (te->getShiny())
@@ -4392,7 +4432,10 @@ void LLVolumeGeometryManager::rebuildGeom(LLSpatialGroup* group)
 					}
 					else
 					{
-						drawablep->setState(LLDrawable::HAS_ALPHA);
+						if (te->getColor().mV[3] > 0.f)
+						{ //only treat as alpha in the pipeline if < 100% transparent
+							drawablep->setState(LLDrawable::HAS_ALPHA);
+						}
 						alpha_faces.push_back(facep);
 					}
 				}
@@ -4510,6 +4553,12 @@ void LLVolumeGeometryManager::rebuildGeom(LLSpatialGroup* group)
 	}
 
 	mFaceList.clear();
+
+	if (pAvatarVO)
+	{
+		pAvatarVO->mAttachmentGeometryBytes += group->mGeometryBytes;
+		pAvatarVO->mAttachmentSurfaceArea += group->mSurfaceArea;
+	}
 }
 
 static LLFastTimer::DeclareTimer FTM_VOLUME_GEOM("Volume Geometry");
@@ -4665,11 +4714,11 @@ void LLVolumeGeometryManager::genDrawInfo(LLSpatialGroup* group, U32 mask, std::
 		buffer_index = -1;
 	}
 
-	S32 texture_index_channels = LLGLSLShader::sIndexedTextureChannels-1; //always reserve one for shiny for now just for simplicity
+	S32 texture_index_channels = 1;
 	
-	if (gGLManager.mGLVersion < 3.1f)
+	if (gGLManager.mGLSLVersionMajor > 1 || gGLManager.mGLSLVersionMinor >= 30)
 	{
-		texture_index_channels = 1;
+		texture_index_channels = LLGLSLShader::sIndexedTextureChannels-1; //always reserve one for shiny for now just for simplicity;
 	}
 
 	if (LLPipeline::sRenderDeferred && distance_sort)
@@ -4806,17 +4855,20 @@ void LLVolumeGeometryManager::genDrawInfo(LLSpatialGroup* group, U32 mask, std::
 	
 		//create/delete/resize vertex buffer if needed
 		LLVertexBuffer* buffer = NULL;
-		LLSpatialGroup::buffer_texture_map_t::iterator found_iter = group->mBufferMap[mask].find(*face_iter);
+
+		{ //try to find a buffer to reuse
+			LLSpatialGroup::buffer_texture_map_t::iterator found_iter = group->mBufferMap[mask].find(*face_iter);
 		
-		if (found_iter != group->mBufferMap[mask].end())
-		{
-			if ((U32) buffer_index < found_iter->second.size())
+			if (found_iter != group->mBufferMap[mask].end())
 			{
-				buffer = found_iter->second[buffer_index];
+				if ((U32) buffer_index < found_iter->second.size())
+				{
+					buffer = found_iter->second[buffer_index];
+				}
 			}
 		}
 						
-		if (!buffer)
+		if (!buffer || !buffer->isWriteable())
 		{ //create new buffer if needed
 			buffer = createVertexBuffer(mask, buffer_usage);
 			buffer->allocateBuffer(geom_count, index_count, TRUE);
@@ -4835,6 +4887,9 @@ void LLVolumeGeometryManager::genDrawInfo(LLSpatialGroup* group, U32 mask, std::
 			}
 		}
 
+		group->mGeometryBytes += buffer->getSize() + buffer->getIndicesSize();
+
+
 		buffer_map[mask][*face_iter].push_back(buffer);
 
 		//add face geometry
@@ -4884,6 +4939,11 @@ void LLVolumeGeometryManager::genDrawInfo(LLSpatialGroup* group, U32 mask, std::
 				fullbright = TRUE;
 			}
 
+			if (hud_group)
+			{ //all hud attachments are fullbright
+				fullbright = TRUE;
+			}
+
 			const LLTextureEntry* te = facep->getTextureEntry();
 			tex = facep->getTexture();
 
@@ -4892,7 +4952,11 @@ void LLVolumeGeometryManager::genDrawInfo(LLSpatialGroup* group, U32 mask, std::
 			if (is_alpha)
 			{
 				// can we safely treat this as an alpha mask?
-				if (facep->canRenderAsMask())
+				if (facep->getFaceColor().mV[3] <= 0.f)
+				{ //100% transparent, don't render unless we're highlighting transparent
+					registerFace(group, facep, LLRenderPass::PASS_ALPHA_INVISIBLE);
+				}
+				else if (facep->canRenderAsMask())
 				{
 					if (te->getFullbright() || LLPipeline::sNoAlpha)
 					{
@@ -4909,7 +4973,6 @@ void LLVolumeGeometryManager::genDrawInfo(LLSpatialGroup* group, U32 mask, std::
 				}
 			}
 			else if (gPipeline.canUseVertexShaders()
-				&& group->mSpatialPartition->mPartitionType != LLViewerRegion::PARTITION_HUD 
 				&& LLPipeline::sRenderBump 
 				&& te->getShiny())
 			{ //shiny
@@ -4974,9 +5037,12 @@ void LLVolumeGeometryManager::genDrawInfo(LLSpatialGroup* group, U32 mask, std::
 					}
 				}
 				
-				//not sure why this is here -- shiny HUD attachments maybe?  -- davep 5/11/2010
-				if (!is_alpha && te->getShiny() && LLPipeline::sRenderBump)
-				{
+				
+				if (!gPipeline.canUseVertexShaders() && 
+					!is_alpha && 
+					te->getShiny() && 
+					LLPipeline::sRenderBump)
+				{ //shiny as an extra pass when shaders are disabled
 					registerFace(group, facep, LLRenderPass::PASS_SHINY);
 				}
 			}
diff --git a/indra/newview/llvowater.cpp b/indra/newview/llvowater.cpp
index 7df50ec815..cd78157944 100644
--- a/indra/newview/llvowater.cpp
+++ b/indra/newview/llvowater.cpp
@@ -160,14 +160,14 @@ BOOL LLVOWater::updateGeometry(LLDrawable *drawable)
 	static const unsigned int vertices_per_quad = 4;
 	static const unsigned int indices_per_quad = 6;
 
-	const S32 size = gSavedSettings.getBOOL("RenderTransparentWater") && !LLGLSLShader::sNoFixedFunction ? 16 : 1;
+	const S32 size = gSavedSettings.getBOOL("RenderTransparentWater") && LLGLSLShader::sNoFixedFunction ? 16 : 1;
 
 	const S32 num_quads = size * size;
 	face->setSize(vertices_per_quad * num_quads,
 				  indices_per_quad * num_quads);
 	
 	LLVertexBuffer* buff = face->getVertexBuffer();
-	if (!buff)
+	if (!buff || !buff->isWriteable())
 	{
 		buff = new LLVertexBuffer(LLDrawPoolWater::VERTEX_DATA_MASK, GL_DYNAMIC_DRAW_ARB);
 		buff->allocateBuffer(face->getGeomCount(), face->getIndicesCount(), TRUE);
@@ -197,6 +197,13 @@ BOOL LLVOWater::updateGeometry(LLDrawable *drawable)
 
 	F32 size_inv = 1.f / size;
 
+	F32 z_fudge = 0.f;
+
+	if (getIsEdgePatch())
+	{ //bump edge patches down 10 cm to prevent aliasing along edges
+		z_fudge = -0.1f;
+	}
+
 	for (y = 0; y < size; y++)
 	{
 		for (x = 0; x < size; x++)
@@ -205,6 +212,7 @@ BOOL LLVOWater::updateGeometry(LLDrawable *drawable)
 			position_agent = getPositionAgent() - getScale() * 0.5f;
 			position_agent.mV[VX] += (x + 0.5f) * step_x;
 			position_agent.mV[VY] += (y + 0.5f) * step_y;
+			position_agent.mV[VZ] += z_fudge;
 
 			*verticesp++  = position_agent - right + up;
 			*verticesp++  = position_agent - right - up;
diff --git a/indra/newview/llvowlsky.cpp b/indra/newview/llvowlsky.cpp
index f1c5499d84..afd902201b 100644
--- a/indra/newview/llvowlsky.cpp
+++ b/indra/newview/llvowlsky.cpp
@@ -774,7 +774,7 @@ BOOL LLVOWLSky::updateStarGeometry(LLDrawable *drawable)
 	LLStrider<LLColor4U> colorsp;
 	LLStrider<LLVector2> texcoordsp;
 
-	if (mStarsVerts.isNull())
+	if (mStarsVerts.isNull() || !mStarsVerts->isWriteable())
 	{
 		mStarsVerts = new LLVertexBuffer(LLDrawPoolWLSky::STAR_VERTEX_DATA_MASK, GL_DYNAMIC_DRAW);
 		mStarsVerts->allocateBuffer(getStarsNumVerts()*6, 0, TRUE);
diff --git a/indra/newview/llwaterparammanager.cpp b/indra/newview/llwaterparammanager.cpp
index 20b34637b8..e386112334 100644
--- a/indra/newview/llwaterparammanager.cpp
+++ b/indra/newview/llwaterparammanager.cpp
@@ -194,7 +194,7 @@ void LLWaterParamManager::updateShaderUniforms(LLGLSLShader * shader)
 		shader->uniform4fv("waterPlane", 1, mWaterPlane.mV);
 		shader->uniform1f("waterFogDensity", getFogDensity());
 		shader->uniform1f("waterFogKS", mWaterFogKS);
-		shader->uniform4f("distance_multiplier", 0, 0, 0, 0);
+		shader->uniform1f("distance_multiplier", 0);
 	}
 }
 
diff --git a/indra/newview/llwearable.cpp b/indra/newview/llwearable.cpp
index d8aa0b7d5c..0f7f63061b 100644
--- a/indra/newview/llwearable.cpp
+++ b/indra/newview/llwearable.cpp
@@ -221,7 +221,7 @@ void LLWearable::createVisualParams()
 		param->resetDrivenParams();
 		if(!param->linkDrivenParams(boost::bind(wearable_function,(LLWearable*)this, _1), false))
 		{
-			if( !param->linkDrivenParams(boost::bind(avatar_function,gAgentAvatarp,_1 ), true))
+			if( !param->linkDrivenParams(boost::bind(avatar_function,gAgentAvatarp.get(),_1 ), true))
 			{
 				llwarns << "could not link driven params for wearable " << getName() << " id: " << param->getID() << llendl;
 				continue;
diff --git a/indra/newview/llwlparammanager.cpp b/indra/newview/llwlparammanager.cpp
index 55608a059f..49d9d44d74 100644
--- a/indra/newview/llwlparammanager.cpp
+++ b/indra/newview/llwlparammanager.cpp
@@ -64,7 +64,6 @@
 LLWLParamManager::LLWLParamManager() :
 
 	//set the defaults for the controls
-	// index is from sWLUniforms in pipeline.cpp line 979
 
 	/// Sun Delta Terrain tweak variables.
 	mSunDeltaYaw(180.0f),
@@ -72,10 +71,10 @@ LLWLParamManager::LLWLParamManager() :
 	mWLGamma(1.0f, "gamma"),
 
 	mBlueHorizon(0.25f, 0.25f, 1.0f, 1.0f, "blue_horizon", "WLBlueHorizon"),
-	mHazeDensity(1.0f, 1.0f, 1.0f, 0.5f, "haze_density"),
+	mHazeDensity(1.0f, "haze_density"),
 	mBlueDensity(0.25f, 0.25f, 0.25f, 1.0f, "blue_density", "WLBlueDensity"),
 	mDensityMult(1.0f, "density_multiplier", 1000),
-	mHazeHorizon(1.0f, 1.0f, 1.0f, 0.5f, "haze_horizon"),
+	mHazeHorizon(1.0f, "haze_horizon"),
 	mMaxAlt(4000.0f, "max_y"),
 
 	// Lighting
diff --git a/indra/newview/llwlparammanager.h b/indra/newview/llwlparammanager.h
index bc984b9126..72422500fc 100644
--- a/indra/newview/llwlparammanager.h
+++ b/indra/newview/llwlparammanager.h
@@ -102,9 +102,8 @@ struct WLFloatControl {
 	{
 	}
 
-	inline WLFloatControl & operator = (LLVector4 const & val) {
-		x = val.mV[0];
-
+	inline WLFloatControl & operator = (F32 val) {
+		x = val;
 		return *this;
 	}
 
@@ -340,10 +339,10 @@ public:
 	
 	/// Atmospherics
 	WLColorControl mBlueHorizon;
-	WLColorControl mHazeDensity;
+	WLFloatControl mHazeDensity;
 	WLColorControl mBlueDensity;
 	WLFloatControl mDensityMult;
-	WLColorControl mHazeHorizon;
+	WLFloatControl mHazeHorizon;
 	WLFloatControl mMaxAlt;
 
 	/// Lighting
diff --git a/indra/newview/llwlparamset.cpp b/indra/newview/llwlparamset.cpp
index 5bb7025031..b04d30db55 100644
--- a/indra/newview/llwlparamset.cpp
+++ b/indra/newview/llwlparamset.cpp
@@ -41,33 +41,7 @@
 LLWLParamSet::LLWLParamSet(void) :
 	mName("Unnamed Preset"),
 	mCloudScrollXOffset(0.f), mCloudScrollYOffset(0.f)	
-{
-/* REMOVE or init the LLSD
-	const std::map<std::string, LLVector4>::value_type hardcodedPreset[] = {
-		std::make_pair("lightnorm",				LLVector4(0.f, 0.707f, -0.707f, 0.f)),
-		std::make_pair("sunlight_color",		LLVector4(0.6f, 0.6f, 2.83f, 2.27f)),
-		std::make_pair("ambient",				LLVector4(0.27f, 0.33f, 0.44f, 1.19f)),
-		std::make_pair("blue_horizon",			LLVector4(0.3f, 0.4f, 0.9f, 1.f)),
-		std::make_pair("blue_density",			LLVector4(0.3f, 0.4f, 0.8f, 1.f)),
-		std::make_pair("haze_horizon",			LLVector4(0.6f, 0.6f, 0.6f, 1.f)),
-		std::make_pair("haze_density",			LLVector4(0.3f, 0.3f, 0.3f, 1.f)),
-		std::make_pair("cloud_shadow",			LLVector4(0.f, 0.f, 0.f, 0.f)),
-		std::make_pair("density_multiplier",	LLVector4(0.001f, 0.001f, 0.001f, 0.001f)),
-		std::make_pair("distance_multiplier",	LLVector4(1.f, 1.f, 1.f, 1.f)),
-		std::make_pair("max_y",					LLVector4(600.f, 600.f, 600.f, 0.f)),
-		std::make_pair("glow",					LLVector4(15.f, 0.001f, -0.03125f, 0.f)),
-		std::make_pair("cloud_color",			LLVector4(0.0f, 0.0f, 0.0f, 0.0f)),
-		std::make_pair("cloud_pos_density1",	LLVector4(0.f, 0.f, 0.f, 1.f)),
-		std::make_pair("cloud_pos_density2",	LLVector4(0.f, 0.f, 0.f, 1.f)),
-		std::make_pair("cloud_scale",			LLVector4(0.42f, 0.f, 0.f, 1.f)),
-		std::make_pair("gamma",					LLVector4(2.0f, 2.0f, 2.0f, 0.0f)),
-	};
-	std::map<std::string, LLVector4>::value_type const * endHardcodedPreset = 
-		hardcodedPreset + LL_ARRAY_SIZE(hardcodedPreset);
-
-	mParamValues.insert(hardcodedPreset, endHardcodedPreset);
-*/
-}
+{}
 
 static LLFastTimer::DeclareTimer FTM_WL_PARAM_UPDATE("WL Param Update");
 
@@ -79,55 +53,78 @@ void LLWLParamSet::update(LLGLSLShader * shader) const
 		i != mParamValues.endMap();
 		++i)
 	{
-		
-
 		const std::string& param = i->first;
 		
-		if(	param == "star_brightness" || param == "preset_num" || param == "sun_angle" ||
+		if (param == "star_brightness" || param == "preset_num" || param == "sun_angle" ||
 			param == "east_angle" || param == "enable_cloud_scroll" ||
 			param == "cloud_scroll_rate" || param == "lightnorm" ) 
 		{
 			continue;
 		}
 		
-		if(param == "cloud_pos_density1") 
+		if (param == "cloud_pos_density1")
 		{
 			LLVector4 val;
 			val.mV[0] = F32(i->second[0].asReal()) + mCloudScrollXOffset;
 			val.mV[1] = F32(i->second[1].asReal()) + mCloudScrollYOffset;
 			val.mV[2] = (F32) i->second[2].asReal();
 			val.mV[3] = (F32) i->second[3].asReal();
+
 			stop_glerror();
 			shader->uniform4fv(param, 1, val.mV);
 			stop_glerror();
-		} 
+		}
+		else if (param == "cloud_scale" || param == "cloud_shadow" ||
+				 param == "density_multiplier" || param == "distance_multiplier" ||
+				 param == "haze_density" || param == "haze_horizon" ||
+				 param == "max_y" )
+		{
+			F32 val = (F32) i->second[0].asReal();
+
+			stop_glerror();
+			shader->uniform1f(param, val);
+			stop_glerror();
+		}
 		else // param is the uniform name
 		{
-			LLVector4 val;
-			
 			// handle all the different cases
-			if(i->second.isArray() && i->second.size() == 4) 
+			if (i->second.isArray() && i->second.size() == 4)
 			{
+				LLVector4 val;
+
 				val.mV[0] = (F32) i->second[0].asReal();
 				val.mV[1] = (F32) i->second[1].asReal();
 				val.mV[2] = (F32) i->second[2].asReal();
 				val.mV[3] = (F32) i->second[3].asReal();															
+
+				stop_glerror();
+				shader->uniform4fv(param, 1, val.mV);
+				stop_glerror();
 			} 
-			else if(i->second.isReal()) 
+			else if (i->second.isReal())
 			{
-				val.mV[0] = (F32) i->second.asReal();
+				F32 val = (F32) i->second.asReal();
+
+				stop_glerror();
+				shader->uniform1f(param, val);
+				stop_glerror();
 			} 
-			else if(i->second.isInteger()) 
+			else if (i->second.isInteger())
 			{
-				val.mV[0] = (F32) i->second.asReal();
+				S32 val = (S32) i->second.asInteger();
+
+				stop_glerror();
+				shader->uniform1i(param, val);
+				stop_glerror();
 			} 
-			else if(i->second.isBoolean())
+			else if (i->second.isBoolean())
 			{
-				val.mV[0] = i->second.asBoolean();
+				S32 val = (i->second.asBoolean() ? 1 : 0);
+
+				stop_glerror();
+				shader->uniform1i(param, val);
+				stop_glerror();
 			}
-			stop_glerror();
-			shader->uniform4fv(param, 1, val.mV);
-			stop_glerror();
 		}
 	}
 }
@@ -148,7 +145,8 @@ void LLWLParamSet::set(const std::string& paramName, float x)
 	}
 }
 
-void LLWLParamSet::set(const std::string& paramName, float x, float y) {
+void LLWLParamSet::set(const std::string& paramName, float x, float y)
+{
 	mParamValues[paramName][0] = x;
 	mParamValues[paramName][1] = y;
 }
@@ -194,7 +192,6 @@ void LLWLParamSet::set(const std::string& paramName, const LLColor4 & val)
 
 LLVector4 LLWLParamSet::getVector(const std::string& paramName, bool& error) 
 {
-	
 	// test to see if right type
 	LLSD cur_val = mParamValues.get(paramName);
 	if (!cur_val.isArray()) 
@@ -215,7 +212,6 @@ LLVector4 LLWLParamSet::getVector(const std::string& paramName, bool& error)
 
 F32 LLWLParamSet::getFloat(const std::string& paramName, bool& error) 
 {
-	
 	// test to see if right type
 	LLSD cur_val = mParamValues.get(paramName);
 	if (cur_val.isArray() && cur_val.size() != 0) 
@@ -234,8 +230,6 @@ F32 LLWLParamSet::getFloat(const std::string& paramName, bool& error)
 	return 0;
 }
 
-
-
 void LLWLParamSet::setSunAngle(float val) 
 {
 	// keep range 0 - 2pi
@@ -263,7 +257,6 @@ void LLWLParamSet::setEastAngle(float val)
 	mParamValues["east_angle"] = val;
 }
 
-
 void LLWLParamSet::mix(LLWLParamSet& src, LLWLParamSet& dest, F32 weight)
 {
 	// set up the iterators
@@ -282,7 +275,6 @@ void LLWLParamSet::mix(LLWLParamSet& src, LLWLParamSet& dest, F32 weight)
 	// Iterate through values
 	for(LLSD::map_iterator iter = mParamValues.beginMap(); iter != mParamValues.endMap(); ++iter)
 	{
-
 		// If param exists in both src and dest, set the holder variables, otherwise skip
 		if(src.mParamValues.has(iter->first) && dest.mParamValues.has(iter->first))
 		{
diff --git a/indra/newview/llwlparamset.h b/indra/newview/llwlparamset.h
index 3c44ed3bb8..b087119dd5 100644
--- a/indra/newview/llwlparamset.h
+++ b/indra/newview/llwlparamset.h
@@ -110,7 +110,7 @@ public:
 	/// \param error		A flag to set if it's not the proper return type
 	LLVector4 getVector(const std::string& paramName, bool& error);
 
-	/// Get an integer parameter
+	/// Get a float parameter
 	/// \param paramName	The name of the parameter to set.
 	/// \param error		A flag to set if it's not the proper return type	
 	F32 getFloat(const std::string& paramName, bool& error);
diff --git a/indra/newview/llworld.cpp b/indra/newview/llworld.cpp
index 676287c0ad..5740ba1ccf 100644
--- a/indra/newview/llworld.cpp
+++ b/indra/newview/llworld.cpp
@@ -839,7 +839,6 @@ void LLWorld::updateWaterObjects()
 
 	// Now, get a list of the holes
 	S32 x, y;
-	F32 water_height = gAgent.getRegion()->getWaterHeight() + 256.f;
 	for (x = min_x; x <= max_x; x += rwidth)
 	{
 		for (y = min_y; y <= max_y; y += rwidth)
@@ -851,7 +850,7 @@ void LLWorld::updateWaterObjects()
 				waterp->setUseTexture(FALSE);
 				waterp->setPositionGlobal(LLVector3d(x + rwidth/2,
 													 y + rwidth/2,
-													 water_height));
+													 256.f+DEFAULT_WATER_HEIGHT));
 				waterp->setScale(LLVector3((F32)rwidth, (F32)rwidth, 512.f));
 				gPipeline.createObject(waterp);
 				mHoleWaterObjects.push_back(waterp);
@@ -908,7 +907,7 @@ void LLWorld::updateWaterObjects()
 		}
 
 		waterp->setRegion(gAgent.getRegion());
-		LLVector3d water_pos(water_center_x, water_center_y, water_height) ;
+		LLVector3d water_pos(water_center_x, water_center_y, 256.f+DEFAULT_WATER_HEIGHT) ;
 		LLVector3 water_scale((F32) dim[0], (F32) dim[1], 512.f);
 
 		//stretch out to horizon
diff --git a/indra/newview/pipeline.cpp b/indra/newview/pipeline.cpp
index 8449e74fb6..fbaded04b0 100644
--- a/indra/newview/pipeline.cpp
+++ b/indra/newview/pipeline.cpp
@@ -203,10 +203,6 @@ extern S32 gBoxFrame;
 extern BOOL gDisplaySwapBuffers;
 extern BOOL gDebugGL;
 
-// hack counter for rendering a fixed number of frames after toggling
-// fullscreen to work around DEV-5361
-static S32 sDelayedVBOEnable = 0;
-
 BOOL	gAvatarBacklight = FALSE;
 
 BOOL	gDebugPipeline = FALSE;
@@ -411,6 +407,7 @@ LLPipeline::LLPipeline() :
 	mOldRenderDebugMask(0),
 	mGroupQ1Locked(false),
 	mGroupQ2Locked(false),
+	mResetVertexBuffers(false),
 	mLastRebuildPool(NULL),
 	mAlphaPool(NULL),
 	mSkyPool(NULL),
@@ -692,8 +689,6 @@ void LLPipeline::destroyGL()
 
 	if (LLVertexBuffer::sEnableVBOs)
 	{
-		// render 30 frames after switching to work around DEV-5361
-		sDelayedVBOEnable = 30;
 		LLVertexBuffer::sEnableVBOs = FALSE;
 	}
 }
@@ -816,6 +811,10 @@ bool LLPipeline::allocateScreenBuffer(U32 resX, U32 resY, U32 samples)
 
 	if (LLPipeline::sRenderDeferred)
 	{
+		// Set this flag in case we crash while resizing window or allocating space for deferred rendering targets
+		gSavedSettings.setBOOL("RenderInitError", TRUE);
+		gSavedSettings.saveToFile( gSavedSettings.getString("ClientSettingsFile"), TRUE );
+
 		S32 shadow_detail = RenderShadowDetail;
 		BOOL ssao = RenderDeferredSSAO;
 		
@@ -877,6 +876,10 @@ bool LLPipeline::allocateScreenBuffer(U32 resX, U32 resY, U32 samples)
 				mShadow[i].release();
 			}
 		}
+
+		// don't disable shaders on next session
+		gSavedSettings.setBOOL("RenderInitError", FALSE);
+		gSavedSettings.saveToFile( gSavedSettings.getString("ClientSettingsFile"), TRUE );
 	}
 	else
 	{
@@ -1081,10 +1084,11 @@ void LLPipeline::createGLBuffers()
 
 	if (LLPipeline::sWaterReflections)
 	{ //water reflection texture
-		U32 res = (U32) gSavedSettings.getS32("RenderWaterRefResolution");
+		U32 res = (U32) llmax(gSavedSettings.getS32("RenderWaterRefResolution"), 512);
 			
 		mWaterRef.allocate(res,res,GL_RGBA,TRUE,FALSE);
-		mWaterDis.allocate(res,res,GL_RGBA,TRUE,FALSE);
+		//always use FBO for mWaterDis so it can be used for avatar texture bakes
+		mWaterDis.allocate(res,res,GL_RGBA,TRUE,FALSE,LLTexUnit::TT_TEXTURE, true);
 	}
 
 	mHighlight.allocate(256,256,GL_RGBA, FALSE, FALSE);
@@ -1127,7 +1131,7 @@ void LLPipeline::createGLBuffers()
 			LLImageGL::generateTextures(1, &mNoiseMap);
 			
 			gGL.getTexUnit(0)->bindManual(LLTexUnit::TT_TEXTURE, mNoiseMap);
-			LLImageGL::setManualImage(LLTexUnit::getInternalType(LLTexUnit::TT_TEXTURE), 0, GL_RGB16F_ARB, noiseRes, noiseRes, GL_RGB, GL_FLOAT, noise);
+			LLImageGL::setManualImage(LLTexUnit::getInternalType(LLTexUnit::TT_TEXTURE), 0, GL_RGB16F_ARB, noiseRes, noiseRes, GL_RGB, GL_FLOAT, noise, false);
 			gGL.getTexUnit(0)->setTextureFilteringOption(LLTexUnit::TFO_POINT);
 		}
 
@@ -1142,7 +1146,7 @@ void LLPipeline::createGLBuffers()
 
 			LLImageGL::generateTextures(1, &mTrueNoiseMap);
 			gGL.getTexUnit(0)->bindManual(LLTexUnit::TT_TEXTURE, mTrueNoiseMap);
-			LLImageGL::setManualImage(LLTexUnit::getInternalType(LLTexUnit::TT_TEXTURE), 0, GL_RGB16F_ARB, noiseRes, noiseRes, GL_RGB,GL_FLOAT, noise);
+			LLImageGL::setManualImage(LLTexUnit::getInternalType(LLTexUnit::TT_TEXTURE), 0, GL_RGB16F_ARB, noiseRes, noiseRes, GL_RGB,GL_FLOAT, noise, false);
 			gGL.getTexUnit(0)->setTextureFilteringOption(LLTexUnit::TFO_POINT);
 		}
 
@@ -1178,7 +1182,7 @@ void LLPipeline::createGLBuffers()
 
 			LLImageGL::generateTextures(1, &mLightFunc);
 			gGL.getTexUnit(0)->bindManual(LLTexUnit::TT_TEXTURE, mLightFunc);
-			LLImageGL::setManualImage(LLTexUnit::getInternalType(LLTexUnit::TT_TEXTURE), 0, GL_R8, lightResX, lightResY, GL_RED, GL_UNSIGNED_BYTE, lg);
+			LLImageGL::setManualImage(LLTexUnit::getInternalType(LLTexUnit::TT_TEXTURE), 0, GL_R8, lightResX, lightResY, GL_RED, GL_UNSIGNED_BYTE, lg, false);
 			gGL.getTexUnit(0)->setTextureAddressMode(LLTexUnit::TAM_CLAMP);
 			gGL.getTexUnit(0)->setTextureFilteringOption(LLTexUnit::TFO_TRILINEAR);
 
@@ -1217,10 +1221,12 @@ void LLPipeline::restoreGL()
 
 BOOL LLPipeline::canUseVertexShaders()
 {
+	static const std::string vertex_shader_enable_feature_string = "VertexShaderEnable";
+
 	if (sDisableShaders ||
 		!gGLManager.mHasVertexShader ||
 		!gGLManager.mHasFragmentShader ||
-		!LLFeatureManager::getInstance()->isFeatureAvailable("VertexShaderEnable") ||
+		!LLFeatureManager::getInstance()->isFeatureAvailable(vertex_shader_enable_feature_string) ||
 		(assertInitialized() && mVertexShadersLoaded != 1) )
 	{
 		return FALSE;
@@ -2521,15 +2527,6 @@ void LLPipeline::updateGeom(F32 max_dtime)
 
 	assertInitialized();
 
-	if (sDelayedVBOEnable > 0)
-	{
-		if (--sDelayedVBOEnable <= 0)
-		{
-			resetVertexBuffers();
-			LLVertexBuffer::sEnableVBOs = TRUE;
-		}
-	}
-
 	// notify various object types to reset internal cost metrics, etc.
 	// for now, only LLVOVolume does this to throttle LOD changes
 	LLVOVolume::preUpdateGeom();
@@ -3765,6 +3762,7 @@ void LLPipeline::renderGeom(LLCamera& camera, BOOL forceVBOUpdate)
 	LLAppViewer::instance()->pingMainloopTimeout("Pipeline:ForceVBO");
 	
 	// Initialize lots of GL state to "safe" values
+	gGL.getTexUnit(0)->unbind(LLTexUnit::TT_TEXTURE);
 	gGL.matrixMode(LLRender::MM_TEXTURE);
 	gGL.loadIdentity();
 	gGL.matrixMode(LLRender::MM_MODELVIEW);
@@ -5296,7 +5294,8 @@ void LLPipeline::setupHWLights(LLDrawPool* pool)
 			light_state->setConstantAttenuation(0.f);
 			if (sRenderDeferred)
 			{
-				light_state->setLinearAttenuation(light_radius*1.5f);
+				F32 size = light_radius*1.5f;
+				light_state->setLinearAttenuation(size*size);
 				light_state->setQuadraticAttenuation(light->getLightFalloff()*0.5f+1.f);
 			}
 			else
@@ -5318,7 +5317,8 @@ void LLPipeline::setupHWLights(LLDrawPool* pool)
 				light_state->setSpotCutoff(90.f);
 				light_state->setSpotExponent(2.f);
 	
-				light_state->setSpecular(LLColor4::black);
+				const LLColor4 specular(0.f, 0.f, 0.f, 0.f);
+				light_state->setSpecular(specular);
 			}
 			else // omnidirectional (point) light
 			{
@@ -6180,7 +6180,7 @@ LLSpatialPartition* LLPipeline::getSpatialPartition(LLViewerObject* vobj)
 
 void LLPipeline::resetVertexBuffers(LLDrawable* drawable)
 {
-	if (!drawable || drawable->isDead())
+	if (!drawable)
 	{
 		return;
 	}
@@ -6193,7 +6193,19 @@ void LLPipeline::resetVertexBuffers(LLDrawable* drawable)
 }
 
 void LLPipeline::resetVertexBuffers()
-{	
+{
+	mResetVertexBuffers = true;
+}
+
+void LLPipeline::doResetVertexBuffers()
+{
+	if (!mResetVertexBuffers)
+	{
+		return;
+	}
+	
+	mResetVertexBuffers = false;
+
 	for (LLWorld::region_list_t::const_iterator iter = LLWorld::getInstance()->getRegionList().begin(); 
 			iter != LLWorld::getInstance()->getRegionList().end(); ++iter)
 	{
@@ -6219,11 +6231,9 @@ void LLPipeline::resetVertexBuffers()
 
 	if (LLVertexBuffer::sGLCount > 0)
 	{
-		llwarns << "VBO wipe failed." << llendl;
+		llwarns << "VBO wipe failed -- " << LLVertexBuffer::sGLCount << " buffers remaining." << llendl;
 	}
 
-	llassert(LLVertexBuffer::sGLCount == 0);
-
 	LLVertexBuffer::unbind();	
 	
 	sRenderBump = gSavedSettings.getBOOL("RenderObjectBump");
@@ -6641,9 +6651,12 @@ void LLPipeline::renderBloom(BOOL for_snapshot, F32 zoom_factor, int subfield)
 				mDeferredLight.flush();
 			}
 
+			U32 dof_width = (U32) (mScreen.getWidth()*CameraDoFResScale);
+			U32 dof_height = (U32) (mScreen.getHeight()*CameraDoFResScale);
+			
 			{ //perform DoF sampling at half-res (preserve alpha channel)
 				mScreen.bindTarget();
-				glViewport(0,0,(GLsizei) (mScreen.getWidth()*CameraDoFResScale), (GLsizei) (mScreen.getHeight()*CameraDoFResScale));
+				glViewport(0,0, dof_width, dof_height);
 				gGL.setColorMask(true, false);
 
 				shader = &gDeferredPostProgram;
@@ -6656,7 +6669,7 @@ void LLPipeline::renderBloom(BOOL for_snapshot, F32 zoom_factor, int subfield)
 
 				shader->uniform1f(LLShaderMgr::DOF_MAX_COF, CameraMaxCoF);
 				shader->uniform1f(LLShaderMgr::DOF_RES_SCALE, CameraDoFResScale);
-
+				
 				gGL.begin(LLRender::TRIANGLE_STRIP);
 				gGL.texCoord2f(tc1.mV[0], tc1.mV[1]);
 				gGL.vertex2f(-1,-1);
@@ -6701,6 +6714,8 @@ void LLPipeline::renderBloom(BOOL for_snapshot, F32 zoom_factor, int subfield)
 
 				shader->uniform1f(LLShaderMgr::DOF_MAX_COF, CameraMaxCoF);
 				shader->uniform1f(LLShaderMgr::DOF_RES_SCALE, CameraDoFResScale);
+				shader->uniform1f(LLShaderMgr::DOF_WIDTH, dof_width-1);
+				shader->uniform1f(LLShaderMgr::DOF_HEIGHT, dof_height-1);
 
 				gGL.begin(LLRender::TRIANGLE_STRIP);
 				gGL.texCoord2f(tc1.mV[0], tc1.mV[1]);
@@ -8810,16 +8825,16 @@ void LLPipeline::generateSunShadow(LLCamera& camera)
 		
 		da = powf(da, split_exp.mV[2]);
 
-
 		F32 sxp = split_exp.mV[1] + (split_exp.mV[0]-split_exp.mV[1])*da;
-
-
+		
 		for (U32 i = 0; i < 4; ++i)
 		{
 			F32 x = (F32)(i+1)/4.f;
 			x = powf(x, sxp);
 			mSunClipPlanes.mV[i] = near_clip+range*x;
 		}
+
+		mSunClipPlanes.mV[0] *= 1.25f; //bump back first split for transition padding
 	}
 
 	// convenience array of 4 near clip plane distances
@@ -8876,8 +8891,8 @@ void LLPipeline::generateSunShadow(LLCamera& camera)
 				delta += (frust[i+4]-frust[(i+2)%4+4])*0.05f;
 				delta.normVec();
 				F32 dp = delta*pn;
-				frust[i] = eye + (delta*dist[j]*0.95f)/dp;
-				frust[i+4] = eye + (delta*dist[j+1]*1.05f)/dp;
+				frust[i] = eye + (delta*dist[j]*0.75f)/dp;
+				frust[i+4] = eye + (delta*dist[j+1]*1.25f)/dp;
 			}
 						
 			shadow_cam.calcAgentFrustumPlanes(frust);
@@ -9419,7 +9434,7 @@ void LLPipeline::generateImpostor(LLVOAvatar* avatar)
 
 	assertInitialized();
 
-	BOOL muted = LLMuteList::getInstance()->isMuted(avatar->getID());
+	bool muted = avatar->isVisuallyMuted();		
 
 	pushRenderTypeMask();
 	
diff --git a/indra/newview/pipeline.h b/indra/newview/pipeline.h
index 2815d736e4..3c4e389ce0 100644
--- a/indra/newview/pipeline.h
+++ b/indra/newview/pipeline.h
@@ -111,6 +111,7 @@ public:
 	void destroyGL();
 	void restoreGL();
 	void resetVertexBuffers();
+	void doResetVertexBuffers();
 	void resizeScreenTexture();
 	void releaseGLBuffers();
 	void releaseScreenBuffers();
@@ -432,34 +433,35 @@ public:
 
 	enum LLRenderDebugMask
 	{
-		RENDER_DEBUG_COMPOSITION		= 0x0000001,
-		RENDER_DEBUG_VERIFY				= 0x0000002,
-		RENDER_DEBUG_BBOXES				= 0x0000004,
-		RENDER_DEBUG_OCTREE				= 0x0000008,
-		RENDER_DEBUG_WIND_VECTORS		= 0x0000010,
-		RENDER_DEBUG_OCCLUSION			= 0x0000020,
-		RENDER_DEBUG_POINTS				= 0x0000040,
-		RENDER_DEBUG_TEXTURE_PRIORITY	= 0x0000080,
-		RENDER_DEBUG_TEXTURE_AREA		= 0x0000100,
-		RENDER_DEBUG_FACE_AREA			= 0x0000200,
-		RENDER_DEBUG_PARTICLES			= 0x0000400,
-		RENDER_DEBUG_GLOW				= 0x0000800,
-		RENDER_DEBUG_TEXTURE_ANIM		= 0x0001000,
-		RENDER_DEBUG_LIGHTS				= 0x0002000,
-		RENDER_DEBUG_BATCH_SIZE			= 0x0004000,
-		RENDER_DEBUG_ALPHA_BINS			= 0x0008000,
-		RENDER_DEBUG_RAYCAST            = 0x0010000,
-		RENDER_DEBUG_SHAME				= 0x0020000,
-		RENDER_DEBUG_SHADOW_FRUSTA		= 0x0040000,
-		RENDER_DEBUG_SCULPTED           = 0x0080000,
-		RENDER_DEBUG_AVATAR_VOLUME      = 0x0100000,
-		RENDER_DEBUG_BUILD_QUEUE		= 0x0200000,
-		RENDER_DEBUG_AGENT_TARGET       = 0x0400000,
-		RENDER_DEBUG_UPDATE_TYPE		= 0x0800000,
-		RENDER_DEBUG_PHYSICS_SHAPES     = 0x1000000,
-		RENDER_DEBUG_NORMALS	        = 0x2000000,
-		RENDER_DEBUG_LOD_INFO	        = 0x4000000,
-		RENDER_DEBUG_RENDER_COMPLEXITY  = 0x8000000
+		RENDER_DEBUG_COMPOSITION		= 0x00000001,
+		RENDER_DEBUG_VERIFY				= 0x00000002,
+		RENDER_DEBUG_BBOXES				= 0x00000004,
+		RENDER_DEBUG_OCTREE				= 0x00000008,
+		RENDER_DEBUG_WIND_VECTORS		= 0x00000010,
+		RENDER_DEBUG_OCCLUSION			= 0x00000020,
+		RENDER_DEBUG_POINTS				= 0x00000040,
+		RENDER_DEBUG_TEXTURE_PRIORITY	= 0x00000080,
+		RENDER_DEBUG_TEXTURE_AREA		= 0x00000100,
+		RENDER_DEBUG_FACE_AREA			= 0x00000200,
+		RENDER_DEBUG_PARTICLES			= 0x00000400,
+		RENDER_DEBUG_GLOW				= 0x00000800,
+		RENDER_DEBUG_TEXTURE_ANIM		= 0x00001000,
+		RENDER_DEBUG_LIGHTS				= 0x00002000,
+		RENDER_DEBUG_BATCH_SIZE			= 0x00004000,
+		RENDER_DEBUG_ALPHA_BINS			= 0x00008000,
+		RENDER_DEBUG_RAYCAST            = 0x00010000,
+		RENDER_DEBUG_SHAME				= 0x00020000,
+		RENDER_DEBUG_SHADOW_FRUSTA		= 0x00040000,
+		RENDER_DEBUG_SCULPTED           = 0x00080000,
+		RENDER_DEBUG_AVATAR_VOLUME      = 0x00100000,
+		RENDER_DEBUG_BUILD_QUEUE		= 0x00200000,
+		RENDER_DEBUG_AGENT_TARGET       = 0x00400000,
+		RENDER_DEBUG_UPDATE_TYPE		= 0x00800000,
+		RENDER_DEBUG_PHYSICS_SHAPES     = 0x01000000,
+		RENDER_DEBUG_NORMALS	        = 0x02000000,
+		RENDER_DEBUG_LOD_INFO	        = 0x04000000,
+		RENDER_DEBUG_RENDER_COMPLEXITY  = 0x08000000,
+		RENDER_DEBUG_ATTACHMENT_BYTES	= 0x10000000,
 	};
 
 public:
@@ -652,6 +654,8 @@ protected:
 	bool mGroupQ2Locked;
 	bool mGroupQ1Locked;
 
+	bool mResetVertexBuffers; //if true, clear vertex buffers on next update
+
 	LLViewerObject::vobj_list_t		mCreateQ;
 		
 	LLDrawable::drawable_set_t		mRetexturedList;
diff --git a/indra/newview/skins/default/textures/checker.png b/indra/newview/skins/default/textures/checker.png
new file mode 100644
index 0000000000..1ab87e3f02
--- /dev/null
+++ b/indra/newview/skins/default/textures/checker.png
diff --git a/indra/newview/skins/default/textures/textures.xml b/indra/newview/skins/default/textures/textures.xml
index e4a8622a4b..eabcc68916 100644
--- a/indra/newview/skins/default/textures/textures.xml
+++ b/indra/newview/skins/default/textures/textures.xml
@@ -122,6 +122,8 @@ with the same filename but different name
   <texture name="Checkbox_Press" file_name="widgets/Checkbox_Press.png" preload="true" />
   <texture name="Check_Mark" file_name="icons/check_mark.png" preload="true" />
 
+  <texture name="Checker" file_name="checker.png" preload="false" />
+  
   <texture name="Command_AboutLand_Icon"    file_name="toolbar_icons/land.png"         preload="true" />
   <texture name="Command_Appearance_Icon"   file_name="toolbar_icons/appearance.png"   preload="true" />
   <texture name="Command_Avatar_Icon"       file_name="toolbar_icons/avatars.png"      preload="true" />
diff --git a/indra/newview/skins/default/xui/en/floater_hardware_settings.xml b/indra/newview/skins/default/xui/en/floater_hardware_settings.xml
index 66bb9d3cea..9deb0d2030 100644
--- a/indra/newview/skins/default/xui/en/floater_hardware_settings.xml
+++ b/indra/newview/skins/default/xui/en/floater_hardware_settings.xml
@@ -132,6 +132,28 @@
      name="vbo"
      tool_tip="Enabling this on modern hardware gives a performance gain.  However, older hardware often has poor implementations of VBOs and you may get crashes when this is enabled."
      width="315" />
+  <text
+    type="string"
+    length="1"
+    follows="left|top"
+    height="16"
+    layout="topleft"
+    left="10"
+    name="tc label"
+    top_pad="10"
+    width="188">
+    Enable S3TC:
+  </text>
+    <check_box
+     control_name="RenderCompressTextures"
+     height="16"
+     initial_value="true"
+     label="Enable Texture Compression (requires restart)"
+     layout="topleft"
+     left_pad="10"
+     name="texture compression"
+     tool_tip="Compresses textures in video memory, allowing for higher resolution textures to be loaded at the cost of some color quality."
+     width="315" />
     <slider
      control_name="TextureMemory"
      decimal_digits="0"
diff --git a/indra/newview/skins/default/xui/en/menu_viewer.xml b/indra/newview/skins/default/xui/en/menu_viewer.xml
index 01713c539a..cd8550b00d 100644
--- a/indra/newview/skins/default/xui/en/menu_viewer.xml
+++ b/indra/newview/skins/default/xui/en/menu_viewer.xml
@@ -2412,6 +2412,16 @@
            function="Advanced.ToggleInfoDisplay"
            parameter="rendercomplexity" />
         </menu_item_check>
+        <menu_item_check
+         label="Attachment Bytes"
+         name="attachment bytes">
+          <menu_item_check.on_check
+           function="Advanced.CheckInfoDisplay"
+           parameter="attachment bytes" />
+          <menu_item_check.on_click
+           function="Advanced.ToggleInfoDisplay"
+           parameter="attachment bytes" />
+        </menu_item_check>
 		<menu_item_check
          label="Sculpt"
          name="Sculpt">