diff --git a/indra/llcharacter/llbvhloader.cpp b/indra/llcharacter/llbvhloader.cpp
index 9f74e877a..b4dedad11 100644
--- a/indra/llcharacter/llbvhloader.cpp
+++ b/indra/llcharacter/llbvhloader.cpp
@@ -1575,7 +1575,7 @@ BOOL LLBVHLoader::serialize(LLDataPacker& dp)
 		constraint_it++)
 		{
 			U8 byte = constraint_it->mChainLength;
-			dp.packU8(byte, "chain_lenght");
+			dp.packU8(byte, "chain_length");
 			
 			byte = constraint_it->mConstraintType;
 			dp.packU8(byte, "constraint_type");
diff --git a/indra/llrender/llgl.cpp b/indra/llrender/llgl.cpp
index e92657bc0..76f81f789 100644
--- a/indra/llrender/llgl.cpp
+++ b/indra/llrender/llgl.cpp
@@ -111,6 +111,8 @@ void APIENTRY gl_debug_callback(GLenum source,
 }
 #endif
 
+void parse_glsl_version(S32& major, S32& minor);
+
 void ll_init_fail_log(std::string filename)
 {
 	gFailLog.open(filename.c_str());
@@ -309,6 +311,7 @@ PFNGLGETACTIVEUNIFORMARBPROC glGetActiveUniformARB = NULL;
 PFNGLGETUNIFORMFVARBPROC glGetUniformfvARB = NULL;
 PFNGLGETUNIFORMIVARBPROC glGetUniformivARB = NULL;
 PFNGLGETSHADERSOURCEARBPROC glGetShaderSourceARB = NULL;
+PFNGLVERTEXATTRIBIPOINTERPROC glVertexAttribIPointer = NULL;
 
 #if LL_WINDOWS
 PFNWGLCREATECONTEXTATTRIBSARBPROC wglCreateContextAttribsARB = NULL;
@@ -458,7 +461,8 @@ LLGLManager::LLGLManager() :
 	mDriverVersionMinor(0),
 	mDriverVersionRelease(0),
 	mGLVersion(1.0f),
-		
+	mGLSLVersionMajor(0),
+	mGLSLVersionMinor(0),		
 	mVRAM(0),
 	mGLMaxVertexRange(0),
 	mGLMaxIndexRange(0)
@@ -569,6 +573,20 @@ 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
+	}
+
 	// Trailing space necessary to keep "nVidia Corpor_ati_on" cards
 	// from being recognized as ATI.
 	if (mGLVendor.substr(0,4) == "ATI ")
@@ -1292,6 +1310,7 @@ 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");
@@ -2082,6 +2101,55 @@ 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 528946f1f..6817ec0f0 100644
--- a/indra/llrender/llgl.h
+++ b/indra/llrender/llgl.h
@@ -145,6 +145,8 @@ 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 d01f90d7c..7ccc0d819 100644
--- a/indra/llrender/llglheaders.h
+++ b/indra/llrender/llglheaders.h
@@ -207,6 +207,7 @@ extern PFNGLVERTEXATTRIB4UBVARBPROC glVertexAttrib4ubvARB;
 extern PFNGLVERTEXATTRIB4UIVARBPROC glVertexAttrib4uivARB;
 extern PFNGLVERTEXATTRIB4USVARBPROC glVertexAttrib4usvARB;
 extern PFNGLVERTEXATTRIBPOINTERARBPROC glVertexAttribPointerARB;
+extern PFNGLVERTEXATTRIBIPOINTERPROC glVertexAttribIPointer;
 extern PFNGLENABLEVERTEXATTRIBARRAYARBPROC glEnableVertexAttribArrayARB;
 extern PFNGLDISABLEVERTEXATTRIBARRAYARBPROC glDisableVertexAttribArrayARB;
 extern PFNGLPROGRAMSTRINGARBPROC glProgramStringARB;
@@ -466,6 +467,7 @@ extern PFNGLVERTEXATTRIB4UBVARBPROC glVertexAttrib4ubvARB;
 extern PFNGLVERTEXATTRIB4UIVARBPROC glVertexAttrib4uivARB;
 extern PFNGLVERTEXATTRIB4USVARBPROC glVertexAttrib4usvARB;
 extern PFNGLVERTEXATTRIBPOINTERARBPROC glVertexAttribPointerARB;
+extern PFNGLVERTEXATTRIBIPOINTERPROC glVertexAttribIPointer;
 extern PFNGLENABLEVERTEXATTRIBARRAYARBPROC glEnableVertexAttribArrayARB;
 extern PFNGLDISABLEVERTEXATTRIBARRAYARBPROC glDisableVertexAttribArrayARB;
 extern PFNGLPROGRAMSTRINGARBPROC glProgramStringARB;
@@ -699,6 +701,7 @@ 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 c7cc041ca..1dfbde0b8 100644
--- a/indra/llrender/llglslshader.cpp
+++ b/indra/llrender/llglslshader.cpp
@@ -149,12 +149,6 @@ BOOL LLGLSLShader::createShader(vector<string> * attributes,
 		glDeleteObjectARB(mProgramObject);
 	// Create program
 	mProgramObject = glCreateProgramObjectARB();
-
-	static const LLCachedControl<bool> no_texture_indexing("ShyotlUseLegacyTextureBatching",false);
-	if (gGLManager.mGLVersion < 3.1f || no_texture_indexing)
-	{ //force indexed texture channels to 1 if GL version is old (performance improvement for drivers with poor branching shader model support)
-		mFeatures.mIndexedTextureChannels = llmin(mFeatures.mIndexedTextureChannels, 1);
-	}
 	
 	//compile new source
 	vector< pair<string,GLenum> >::iterator fileIter = mShaderFiles.begin();
@@ -181,8 +175,9 @@ BOOL LLGLSLShader::createShader(vector<string> * attributes,
 		return FALSE;
 	}
 
-	if (gGLManager.mGLVersion < 3.1f || no_texture_indexing)
-	{ //attachShaderFeatures may have set the number of indexed texture channels, so set to 1 again
+	static const LLCachedControl<bool> no_texture_indexing("ShyotlUseLegacyTextureBatching",false);
+ 	if (gGLManager.mGLVersion < 3.1f || no_texture_indexing)
+ 	{ //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/llshadermgr.cpp b/indra/llrender/llshadermgr.cpp
index e17fd6998..9a6c6e9e1 100644
--- a/indra/llrender/llshadermgr.cpp
+++ b/indra/llrender/llshadermgr.cpp
@@ -578,34 +578,45 @@ 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)
+	S32 major_version = gGLManager.mGLSLVersionMajor;
+	S32 minor_version = gGLManager.mGLSLVersionMinor;
+	
+	if (major_version == 1 && minor_version < 30)
 	{
-		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)
-	{
-		//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");
 		}
 		else
 		{ //set version to 400
@@ -621,13 +632,17 @@ 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 texture2DRect 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");	//Shadow lookups only return a single float.
@@ -659,11 +674,11 @@ GLhandleARB LLShaderMgr::loadShaderFile(const std::string& filename, S32 & shade
 		.
 		uniform sampler2D texN;
 		
-		varying float vary_texture_index;
+		VARYING_FLAT ivec4 vary_texture_index;
 
 		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);
@@ -687,7 +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");
@@ -716,28 +731,10 @@ GLhandleARB LLShaderMgr::loadShaderFile(const std::string& filename, S32 & shade
 			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
diff --git a/indra/llrender/llvertexbuffer.cpp b/indra/llrender/llvertexbuffer.cpp
index 794d5c794..4324d312c 100644
--- a/indra/llrender/llvertexbuffer.cpp
+++ b/indra/llrender/llvertexbuffer.cpp
@@ -285,6 +285,12 @@ void LLVertexBuffer::setupClientArrays(U32 data_mask)
 	{
 		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)
 		{
 			for (U32 i = 0; i < TYPE_MAX; ++i)
@@ -1178,7 +1184,7 @@ void LLVertexBuffer::setupVertexArray()
 		1, //TYPE_WEIGHT,
 		4, //TYPE_WEIGHT4,
 		4, //TYPE_CLOTHWEIGHT,
-		1, //TYPE_TEXTURE_INDEX
+		4, //TYPE_TEXTURE_INDEX
 	};
 
 	U32 attrib_type[] =
@@ -1195,7 +1201,24 @@ 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[] =
@@ -1223,7 +1246,21 @@ 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)
+			{
+#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
 		{
@@ -2204,11 +2241,14 @@ void LLVertexBuffer::setupVertexBuffer(U32 data_mask)
 			void* ptr = (void*)(base + mOffsets[TYPE_CLOTHWEIGHT]);
 			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/newview/CMakeLists.txt b/indra/newview/CMakeLists.txt
index 85d6f9ecd..e28151f62 100644
--- a/indra/newview/CMakeLists.txt
+++ b/indra/newview/CMakeLists.txt
@@ -1207,7 +1207,9 @@ if (WINDOWS)
         DXGUID_LIBRARY
         )
 
+# see EXP-1765 - theory is opengl32.lib needs to be included before gdi32.lib (windows libs)
     set(viewer_LIBRARIES
+        opengl32
         advapi32
         comdlg32
         ${DINPUT_LIBRARY}
@@ -1218,7 +1220,6 @@ if (WINDOWS)
         odbccp32
         ole32
         oleaut32
-        opengl32
         shell32
         user32
         Vfw32
diff --git a/indra/newview/app_settings/shaders/class1/avatar/pickAvatarF.glsl b/indra/newview/app_settings/shaders/class1/avatar/pickAvatarF.glsl
index 3e4d438ed..7a3590528 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 c012efa05..73f05a5dd 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/alphaF.glsl
+++ b/indra/newview/app_settings/shaders/class1/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
 
 uniform sampler2DRect depthMap;
@@ -69,6 +71,6 @@ 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 864182777..bfbd30a45 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/alphaNonIndexedF.glsl
+++ b/indra/newview/app_settings/shaders/class1/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 sampler2DRect depthMap;
@@ -81,9 +83,9 @@ 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 c13ea702d..dae1131bb 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/alphaNonIndexedNoColorF.glsl
+++ b/indra/newview/app_settings/shaders/class1/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 sampler2DRect depthMap;
@@ -79,6 +81,6 @@ 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/attachmentShadowF.glsl b/indra/newview/app_settings/shaders/class1/deferred/attachmentShadowF.glsl
index 402f68163..92e3f7f38 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/attachmentShadowF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/attachmentShadowF.glsl
@@ -23,7 +23,9 @@
  */
 
 #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 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,vertex_color.a * texture2D(diffuseMap, vary_texcoord0.xy).a);
+	frag_color = vec4(1,1,1,1);
 }
 
diff --git a/indra/newview/app_settings/shaders/class1/deferred/avatarF.glsl b/indra/newview/app_settings/shaders/class1/deferred/avatarF.glsl
index 9a3b2e3e8..46d2aa487 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 558a88009..3686f2f64 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 60d4dae99..f400eb7a5 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 6cc5f23ac..680eadb85 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 6c205074b..8ba75010a 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 db272cf60..1d8ca04cc 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/cofF.glsl b/indra/newview/app_settings/shaders/class1/deferred/cofF.glsl
index e612efba6..ccbc3c557 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 e9989a4e4..b2027d3a5 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 fdf8d72b3..ead384b07 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 bb20e2ca4..f73fa6f23 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 7bde49eb8..227aa2aae 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 75b45111e..d442e5403 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 0cf5afc56..a425e5062 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;
@@ -73,5 +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 92f78125d..6aa4d7b4e 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 84ae2f9f1..36433a582 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 5af940645..e02a7b405 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 29ca80ae9..da1b23424 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/giV.glsl b/indra/newview/app_settings/shaders/class1/deferred/giV.glsl
deleted file mode 100644
index e5d3bb8ea..000000000
--- a/indra/newview/app_settings/shaders/class1/deferred/giV.glsl
+++ /dev/null
@@ -1,48 +0,0 @@
-/** 
- * @file giV.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 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;
-
-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/impostorF.glsl b/indra/newview/app_settings/shaders/class1/deferred/impostorF.glsl
index a44173a2a..bc0719cb8 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 e014a14ad..dcf474824 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 179c721a2..53a2a1339 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 2196d1489..75de47614 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 879942d8f..62cfa5c31 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 b673d00d6..a5e04fba5 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 9b3818b67..2c88331d4 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 c27543477..eb5beeef3 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/postgiF.glsl b/indra/newview/app_settings/shaders/class1/deferred/postgiF.glsl
index 84d65d5b3..96f962842 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/postgiV.glsl b/indra/newview/app_settings/shaders/class1/deferred/postgiV.glsl
deleted file mode 100644
index 0d5c8e728..000000000
--- a/indra/newview/app_settings/shaders/class1/deferred/postgiV.glsl
+++ /dev/null
@@ -1,40 +0,0 @@
-/** 
- * @file postgiV.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 modelview_projection_matrix;
- 
-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; 	
-	vary_fragcoord = (pos.xy*0.5+0.5)*screen_res;
-}
diff --git a/indra/newview/app_settings/shaders/class1/deferred/shadowAlphaMaskF.glsl b/indra/newview/app_settings/shaders/class1/deferred/shadowAlphaMaskF.glsl
index c1fb7b55d..cf8cf8364 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 bf75ca262..7e55fdc12 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 96ad0aa93..faa54a316 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/softenLightF.glsl b/indra/newview/app_settings/shaders/class1/deferred/softenLightF.glsl
index 579ce74f2..c0fa9fa89 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;
@@ -324,7 +326,7 @@ 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 cc0f4e5b6..7ed8ed337 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 03fccd276..821058804 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 adc7c5d00..5ca817aff 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/sunLightSSAOF.glsl b/indra/newview/app_settings/shaders/class1/deferred/sunLightSSAOF.glsl
index fc5959a33..7fa666a73 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
@@ -128,8 +130,8 @@ 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 5522e6c41..8a5e482e8 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 ea98d6884..6cf6106b5 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 20d017053..d4d2f5f57 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 4c9ea24a2..42dc7c098 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 9a3d79222..0f5eb288f 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 1b2522b81..933668b0d 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;
@@ -51,5 +53,5 @@ void main()
 	col += kern.y * texture2D(diffuseMap, vary_texcoord2.zw);	
 	col += kern.x * 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 18f6d9180..668a710c0 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 e5c7ced52..a95656239 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 1fdb90f79..0d8dab0a4 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 444c896d3..79bffab74 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 d2f5e1987..f520f301d 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 4b481ba83..a96d04cc3 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 6bcc97ba1..67c6baddb 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 f67703b83..ed803de27 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 c66a6e5b4..59520bb99 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 ecbc30f05..6cc9bbbea 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 85f819f4c..db130e456 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 fafeb5a7b..415181126 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 f79012274..67dc50049 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 a0bb255cf..772bb374e 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 cdb48163d..95679e93e 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 36d6e06fc..299bfb72a 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 10413bdeb..cf29939cb 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 1164e5b0a..4070d41f4 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 735f5b381..d6ebfcb82 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 ba99c0ed7..6c34643aa 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 c3edc0bd7..2ff7f795b 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 276fad4f4..f4477bd29 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 4e1e664e6..2738ff894 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 c981e9eba..777c8b45b 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 a4893f035..4fa3b1d93 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 c10cde98e..58984a426 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 e9b26087f..a39b7205d 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 754b2922d..99a6fe85f 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 2547f9e75..df182168f 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 f69b907dc..63f92a884 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 aa3ef8cdd..0e68091e7 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 9f1a358b5..0aca76802 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 e9c27dbef..52e3b2ad0 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 595ad7436..474d5ea49 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 68c727d62..d2a4c47aa 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 f32b9e195..f3bd66236 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 103dd633c..b68240ba0 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 bef72752d..da3b20012 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 e9537d1e9..00609e93c 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 8b0c25b70..13ecb7a63 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 4b85d61ac..d55f0db53 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 3c6e22b29..add437d14 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 a95c9e0ab..7c0699d72 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 1179b212a..e5edb482a 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;
@@ -125,6 +127,6 @@ 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 0df557f2a..c467e6c5c 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;
@@ -138,6 +140,6 @@ 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 331dbc707..8aaf87a1b 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;
@@ -137,6 +139,6 @@ 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/multiSpotLightF.glsl b/indra/newview/app_settings/shaders/class2/deferred/multiSpotLightF.glsl
index 14a683971..f7f1f649c 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 0e1cf8a73..8841dc841 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;
@@ -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 31bd0c79d..99a277fbf 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 229c2f4b6..a40b29d2c 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
@@ -129,7 +131,7 @@ 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;
 	}*/
 	
@@ -198,19 +200,19 @@ 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 6b420833b..774f70262 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
@@ -190,7 +192,7 @@ 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;
 	}*/
 	
@@ -259,19 +261,19 @@ 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/cloudsF.glsl b/indra/newview/app_settings/shaders/class2/windlight/cloudsF.glsl
index 4ab06c6e2..96c70651b 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/skyF.glsl b/indra/newview/app_settings/shaders/class2/windlight/skyF.glsl
index c9d96b2cf..e2a236762 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/lldynamictexture.cpp b/indra/newview/lldynamictexture.cpp
index ab842b713..d2d5e8290 100644
--- a/indra/newview/lldynamictexture.cpp
+++ b/indra/newview/lldynamictexture.cpp
@@ -129,8 +129,16 @@ 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
@@ -144,9 +152,9 @@ 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);
@@ -212,6 +220,13 @@ BOOL LLViewerDynamicTexture::updateAllInstances()
 		return TRUE;
 	}
 
+	bool use_fbo = gGLManager.mHasFramebufferObject && gPipeline.mWaterDis.isComplete();
+
+	if (use_fbo)
+	{
+		gPipeline.mWaterDis.bindTarget();
+	}
+
 	LLGLSLShader::bindNoShader();
 	LLVertexBuffer::unbind();
 	
@@ -245,6 +260,11 @@ BOOL LLViewerDynamicTexture::updateAllInstances()
 		}
 	}
 
+	if (use_fbo)
+	{
+		gPipeline.mWaterDis.flush();
+	}
+
 	return ret;
 }
 
diff --git a/indra/newview/llface.cpp b/indra/newview/llface.cpp
index 28f781077..868afa04b 100644
--- a/indra/newview/llface.cpp
+++ b/indra/newview/llface.cpp
@@ -1636,14 +1636,22 @@ BOOL LLFace::getGeometryVolume(const LLVolume& volume,
 
 		LLVector4a texIdx;
 
-		F32 index = (F32) (mTextureIndex < 255 ? mTextureIndex : 0);
+		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);
 
 		LLVector4Logical mask;
 		mask.clear();
 		mask.setElement<3>();
 		
-		texIdx.set(0,0,0,index);
+		texIdx.set(0,0,0,val);
 
 		{
 			LLFastTimer t(FTM_FACE_POSITION_STORE);
diff --git a/indra/newview/llmeshrepository.cpp b/indra/newview/llmeshrepository.cpp
index 7af322e63..ab64f5228 100644
--- a/indra/newview/llmeshrepository.cpp
+++ b/indra/newview/llmeshrepository.cpp
@@ -514,6 +514,7 @@ void LLMeshRepoThread::run()
 			
 			while (!mLODReqQ.empty() && count < MAX_MESH_REQUESTS_PER_SECOND && sActiveLODRequests < (S32)sMaxConcurrentRequests)
 			{
+				if (mMutex)
 				{
 					mMutex->lock();
 					LODRequest req = mLODReqQ.front();
@@ -529,6 +530,7 @@ void LLMeshRepoThread::run()
 
 			while (!mHeaderReqQ.empty() && count < MAX_MESH_REQUESTS_PER_SECOND && sActiveHeaderRequests < (S32)sMaxConcurrentRequests)
 			{
+				if (mMutex)
 				{
 					mMutex->lock();
 					HeaderRequest req = mHeaderReqQ.front();
@@ -675,6 +677,12 @@ 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())
@@ -747,6 +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())
@@ -819,6 +832,11 @@ 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())
@@ -936,6 +954,11 @@ bool LLMeshRepoThread::fetchMeshHeader(const LLVolumeParams& mesh_params)
 
 bool LLMeshRepoThread::fetchMeshLOD(const LLVolumeParams& mesh_params, S32 lod)
 {	//protected by mMutex
+	if (!mHeaderMutex)
+	{
+		return false;
+	}
+
 	mHeaderMutex->lock();
 
 	bool retval = false;
@@ -1050,10 +1073,11 @@ 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);
@@ -1616,6 +1640,11 @@ void LLMeshUploadThread::requestWholeModelFee()
 
 void LLMeshRepoThread::notifyLoadedMeshes()
 {//called via gMeshRepo.notifyLoadedMeshes(). mMutex already locked
+	if (!mMutex)
+	{
+		return;
+	}
+
 	while (!mLoadedQ.empty())
 	{
 		mMutex->lock();
@@ -2342,93 +2371,92 @@ void LLMeshRepository::notifyLoadedMeshes()
 		}
 	}
 
-	mMeshMutex->lock();	
-	mThread->mMutex->lock();
+	{
+		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);
-
-	if (push_count > 0)
-	{
-		//calculate "score" for pending requests
-
-		//create score map
-		std::map<LLUUID, F32> score_map;
-
-		for (U32 i = 0; i < 4; ++i)
+		//popup queued error messages from background threads
+		while (!mUploadErrorQ.empty())
 		{
-			for (mesh_load_map::iterator iter = mLoadingMeshes[i].begin();  iter != mLoadingMeshes[i].end(); ++iter)
-			{
-				F32 max_score = 0.f;
-				for (std::set<LLUUID>::iterator obj_iter = iter->second.begin(); obj_iter != iter->second.end(); ++obj_iter)
-				{
-					LLViewerObject* object = gObjectList.findObject(*obj_iter);
+			LLNotificationsUtil::add("MeshUploadError", mUploadErrorQ.front());
+			mUploadErrorQ.pop();
+		}
 
-					if (object)
+		S32 push_count = LLMeshRepoThread::sMaxConcurrentRequests-(LLMeshRepoThread::sActiveHeaderRequests+LLMeshRepoThread::sActiveLODRequests);
+
+		if (push_count > 0)
+		{
+			//calculate "score" for pending requests
+
+			//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)
+				{
+					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());
-			LLMeshRepository::sLODPending--;
-			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();
 }
@@ -3089,13 +3117,14 @@ 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)
 		{
@@ -3119,14 +3148,14 @@ 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();						
 		}
@@ -3190,7 +3219,7 @@ void LLPhysicsDecomp::doDecompositionSingleHull()
 #endif //!MESH_IMPORT	
 #if MESH_IMPORT
 	LLConvexDecomposition* decomp = LLConvexDecomposition::getInstance();
-	
+
 	if (decomp == NULL)
 	{
 		//stub. do nothing.
@@ -3248,14 +3277,13 @@ void LLPhysicsDecomp::doDecompositionSingleHull()
 	{
 		param_count = decomp->getParameters(&params);
 	}
-		
+	
 	for (S32 i = 0; i < param_count; ++i)
 	{
 		decomp->setParam(params[i].mName, params[i].mDefault.mIntOrEnumValue);
 	}
-#endif
 
-	const S32 STAGE_DECOMPOSE = mStageID["Decompose"];
+	const S32 STAGE_DECOMPOSE = mStageID["Decompose"];	
 	const S32 STAGE_SIMPLIFY = mStageID["Simplify"];
 	const S32 DECOMP_PREVIEW = 0;
 	const S32 SIMPLIFY_RETAIN = 0;
@@ -3317,12 +3345,13 @@ void LLPhysicsDecomp::doDecompositionSingleHull()
 			}
 		}
 	}
+#endif
 
 	{
 		completeCurrent();
 		
 	}
-#endif
+#endif //MESH_IMPORT
 }
 
 
diff --git a/indra/newview/llviewershadermgr.cpp b/indra/newview/llviewershadermgr.cpp
index aa2ab0aa1..4feb87480 100644
--- a/indra/newview/llviewershadermgr.cpp
+++ b/indra/newview/llviewershadermgr.cpp
@@ -316,6 +316,12 @@ 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)
@@ -359,6 +365,8 @@ 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;
@@ -368,6 +376,7 @@ 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
@@ -599,7 +608,10 @@ 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.
diff --git a/indra/newview/pipeline.cpp b/indra/newview/pipeline.cpp
index 4b5a073b3..41c440c3b 100644
--- a/indra/newview/pipeline.cpp
+++ b/indra/newview/pipeline.cpp
@@ -884,10 +884,11 @@ 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);
 	}
 
 
@@ -6517,8 +6518,8 @@ void LLPipeline::renderBloom(BOOL for_snapshot, F32 zoom_factor, int subfield, b
 				mDeferredLight.flush();
 			}
 
-			U32 dof_width = mScreen.getWidth()*CameraDoFResScale;
-			U32 dof_height = mScreen.getHeight()*CameraDoFResScale;
+			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();