SH-2031 High risk changeset, but potentially high reward. Addresses frame stalls in renderer by never using the fixed function pipeline if shaders are available.

44 files changed, 701 insertions, 117 deletions

diff --git a/indra/llrender/llcubemap.cpp b/indra/llrender/llcubemap.cpp
index fb22d7f1f5..1b10354c22 100644
--- a/indra/llrender/llcubemap.cpp
+++ b/indra/llrender/llcubemap.cpp
@@ -259,7 +259,7 @@ void LLCubeMap::setMatrix(S32 stage)
 	
 	if (mMatrixStage < 0) return;
 	
-	if (stage > 0)
+	//if (stage > 0)
 	{
 		gGL.getTexUnit(stage)->activate();
 	}
@@ -278,17 +278,17 @@ void LLCubeMap::setMatrix(S32 stage)
 	glLoadMatrixf((F32 *)trans.mMatrix);
 	glMatrixMode(GL_MODELVIEW);
 	
-	if (stage > 0)
+	/*if (stage > 0)
 	{
 		gGL.getTexUnit(0)->activate();
-	}
+	}*/
 }
 
 void LLCubeMap::restoreMatrix()
 {
 	if (mMatrixStage < 0) return;
 
-	if (mMatrixStage > 0)
+	//if (mMatrixStage > 0)
 	{
 		gGL.getTexUnit(mMatrixStage)->activate();
 	}
@@ -296,10 +296,10 @@ void LLCubeMap::restoreMatrix()
 	glPopMatrix();
 	glMatrixMode(GL_MODELVIEW);
 	
-	if (mMatrixStage > 0)
+	/*if (mMatrixStage > 0)
 	{
 		gGL.getTexUnit(0)->activate();
-	}
+	}*/
 }
 
 void LLCubeMap::setReflection (void)
diff --git a/indra/llrender/llgl.cpp b/indra/llrender/llgl.cpp
index e07ff0015c..8937726209 100644
--- a/indra/llrender/llgl.cpp
+++ b/indra/llrender/llgl.cpp
@@ -986,12 +986,12 @@ void LLGLManager::initExtensions()
 	}
 	if (mHasSync)
 	{
-		glFenceSync = (PFNGLFENCESYNCPROC) GLH_EXT_GET_PROC_ADDRESS("glFenceSync");

-		glIsSync = (PFNGLISSYNCPROC) GLH_EXT_GET_PROC_ADDRESS("glIsSync");

-		glDeleteSync = (PFNGLDELETESYNCPROC) GLH_EXT_GET_PROC_ADDRESS("glDeleteSync");

-		glClientWaitSync = (PFNGLCLIENTWAITSYNCPROC) GLH_EXT_GET_PROC_ADDRESS("glClientWaitSync");

-		glWaitSync = (PFNGLWAITSYNCPROC) GLH_EXT_GET_PROC_ADDRESS("glWaitSync");

-		glGetInteger64v = (PFNGLGETINTEGER64VPROC) GLH_EXT_GET_PROC_ADDRESS("glGetInteger64v");

+		glFenceSync = (PFNGLFENCESYNCPROC) GLH_EXT_GET_PROC_ADDRESS("glFenceSync");
+		glIsSync = (PFNGLISSYNCPROC) GLH_EXT_GET_PROC_ADDRESS("glIsSync");
+		glDeleteSync = (PFNGLDELETESYNCPROC) GLH_EXT_GET_PROC_ADDRESS("glDeleteSync");
+		glClientWaitSync = (PFNGLCLIENTWAITSYNCPROC) GLH_EXT_GET_PROC_ADDRESS("glClientWaitSync");
+		glWaitSync = (PFNGLWAITSYNCPROC) GLH_EXT_GET_PROC_ADDRESS("glWaitSync");
+		glGetInteger64v = (PFNGLGETINTEGER64VPROC) GLH_EXT_GET_PROC_ADDRESS("glGetInteger64v");
 		glGetSynciv = (PFNGLGETSYNCIVPROC) GLH_EXT_GET_PROC_ADDRESS("glGetSynciv");
 	}
 	if (mHasMapBufferRange)
@@ -1379,6 +1379,8 @@ void LLGLState::checkStates(const std::string& msg)
 	glGetIntegerv(GL_BLEND_SRC, &src);
 	glGetIntegerv(GL_BLEND_DST, &dst);
 	
+	stop_glerror();
+
 	BOOL error = FALSE;
 
 	if (src != GL_SRC_ALPHA || dst != GL_ONE_MINUS_SRC_ALPHA)
@@ -1399,7 +1401,9 @@ void LLGLState::checkStates(const std::string& msg)
 	{
 		LLGLenum state = iter->first;
 		LLGLboolean cur_state = iter->second;
+		stop_glerror();
 		LLGLboolean gl_state = glIsEnabled(state);
+		stop_glerror();
 		if(cur_state != gl_state)
 		{
 			dumpStates();
@@ -1424,11 +1428,11 @@ void LLGLState::checkStates(const std::string& msg)
 
 void LLGLState::checkTextureChannels(const std::string& msg)
 {
+#if 0
 	if (!gDebugGL)
 	{
 		return;
 	}
-
 	stop_glerror();
 
 	GLint activeTexture;
@@ -1594,6 +1598,7 @@ void LLGLState::checkTextureChannels(const std::string& msg)
 			LL_GL_ERRS << "GL texture state corruption detected.  " << msg << LL_ENDL;
 		}
 	}
+#endif
 }
 
 void LLGLState::checkClientArrays(const std::string& msg, U32 data_mask)
@@ -1710,7 +1715,7 @@ void LLGLState::checkClientArrays(const std::string& msg, U32 data_mask)
 		}
 	}
 
-	if (glIsEnabled(GL_TEXTURE_2D))
+	/*if (glIsEnabled(GL_TEXTURE_2D))
 	{
 		if (!(data_mask & 0x0008))
 		{
@@ -1733,7 +1738,7 @@ void LLGLState::checkClientArrays(const std::string& msg, U32 data_mask)
 				gFailLog << "GL does not have GL_TEXTURE_2D enabled on channel 1." << std::endl;
 			}
 		}
-	}
+	}*/
 
 	glClientActiveTextureARB(GL_TEXTURE0_ARB);
 	gGL.getTexUnit(0)->activate();
diff --git a/indra/llrender/llglslshader.cpp b/indra/llrender/llglslshader.cpp
index ad2c662dfc..c582858413 100644
--- a/indra/llrender/llglslshader.cpp
+++ b/indra/llrender/llglslshader.cpp
@@ -49,6 +49,7 @@ using std::make_pair;
 using std::string;
 
 GLhandleARB LLGLSLShader::sCurBoundShader = 0;
+bool LLGLSLShader::sNoFixedFunction = false;
 
 BOOL shouldChange(const LLVector4& v1, const LLVector4& v2)
 {
@@ -376,6 +377,7 @@ BOOL LLGLSLShader::link(BOOL suppress_errors)
 
 void LLGLSLShader::bind()
 {
+	gGL.flush();
 	if (gGLManager.mHasShaderObjects)
 	{
 		glUseProgramObjectARB(mProgramObject);
@@ -390,6 +392,7 @@ void LLGLSLShader::bind()
 
 void LLGLSLShader::unbind()
 {
+	gGL.flush();
 	if (gGLManager.mHasShaderObjects)
 	{
 		stop_glerror();
diff --git a/indra/llrender/llglslshader.h b/indra/llrender/llglslshader.h
index 4922eb6d67..24562c3c42 100644
--- a/indra/llrender/llglslshader.h
+++ b/indra/llrender/llglslshader.h
@@ -67,6 +67,7 @@ public:
 	LLGLSLShader();
 
 	static GLhandleARB sCurBoundShader;
+	static bool sNoFixedFunction;
 
 	void unload();
 	BOOL createShader(std::vector<std::string> * attributes,
diff --git a/indra/llrender/llimagegl.cpp b/indra/llrender/llimagegl.cpp
index 60a5962234..9ca3a23d52 100644
--- a/indra/llrender/llimagegl.cpp
+++ b/indra/llrender/llimagegl.cpp
@@ -1414,6 +1414,8 @@ BOOL LLImageGL::readBackRaw(S32 discard_level, LLImageRaw* imageraw, bool compre
 
 void LLImageGL::deleteDeadTextures()
 {
+	bool reset = false;
+
 	while (!sDeadTextureList.empty())
 	{
 		GLuint tex = sDeadTextureList.front();
@@ -1426,12 +1428,22 @@ void LLImageGL::deleteDeadTextures()
 			{
 				tex_unit->unbind(tex_unit->getCurrType());
 				stop_glerror();
+
+				if (i > 0)
+				{
+					reset = true;
+				}
 			}
 		}
 		
 		glDeleteTextures(1, &tex);
 		stop_glerror();
 	}
+
+	if (reset)
+	{
+		gGL.getTexUnit(0)->activate();
+	}
 }
 		
 void LLImageGL::destroyGLTexture()
diff --git a/indra/llrender/llrender.cpp b/indra/llrender/llrender.cpp
index 1d82dda30f..70df1dd1d1 100644
--- a/indra/llrender/llrender.cpp
+++ b/indra/llrender/llrender.cpp
@@ -46,6 +46,7 @@ S32	gGLViewport[4];
 
 U32 LLRender::sUICalls = 0;
 U32 LLRender::sUIVerts = 0;
+U32 LLTexUnit::sWhiteTexture = 0;
 
 static const U32 LL_NUM_TEXTURE_LAYERS = 32; 
 static const U32 LL_NUM_LIGHT_UNITS = 8;
@@ -126,7 +127,8 @@ void LLTexUnit::refreshState(void)
 	// Per apple spec, don't call glEnable/glDisable when index exceeds max texture units
 	// http://www.mailinglistarchive.com/html/mac-opengl@lists.apple.com/2008-07/msg00653.html
 	//
-	bool enableDisable = (mIndex < gGLManager.mNumTextureUnits) && mCurrTexType != LLTexUnit::TT_MULTISAMPLE_TEXTURE;
+	bool enableDisable = !LLGLSLShader::sNoFixedFunction && 
+		(mIndex < gGLManager.mNumTextureUnits) && mCurrTexType != LLTexUnit::TT_MULTISAMPLE_TEXTURE;
 		
 	if (mCurrTexType != TT_NONE)
 	{
@@ -184,7 +186,8 @@ void LLTexUnit::enable(eTextureType type)
 		mCurrTexType = type;
 
 		gGL.flush();
-		if (type != LLTexUnit::TT_MULTISAMPLE_TEXTURE &&
+		if (!LLGLSLShader::sNoFixedFunction && 
+			type != LLTexUnit::TT_MULTISAMPLE_TEXTURE &&
 			mIndex < gGLManager.mNumTextureUnits)
 		{
 			glEnable(sGLTextureType[type]);
@@ -201,7 +204,8 @@ void LLTexUnit::disable(void)
 		activate();
 		unbind(mCurrTexType);
 		gGL.flush();
-		if (mCurrTexType != LLTexUnit::TT_MULTISAMPLE_TEXTURE &&
+		if (!LLGLSLShader::sNoFixedFunction &&
+			mCurrTexType != LLTexUnit::TT_MULTISAMPLE_TEXTURE &&
 			mIndex < gGLManager.mNumTextureUnits)
 		{
 			glDisable(sGLTextureType[mCurrTexType]);
@@ -403,7 +407,14 @@ void LLTexUnit::unbind(eTextureType type)
 
 		activate();
 		mCurrTexture = 0;
-		glBindTexture(sGLTextureType[type], 0);
+		if (LLGLSLShader::sNoFixedFunction && type == LLTexUnit::TT_TEXTURE)
+		{
+			glBindTexture(sGLTextureType[type], sWhiteTexture);
+		}
+		else
+		{
+			glBindTexture(sGLTextureType[type], 0);
+		}
 		stop_glerror();
 	}
 }
@@ -474,6 +485,11 @@ void LLTexUnit::setTextureFilteringOption(LLTexUnit::eTextureFilterOptions optio
 
 void LLTexUnit::setTextureBlendType(eTextureBlendType type)
 {
+	if (LLGLSLShader::sNoFixedFunction)
+	{ //texture blend type means nothing when using shaders
+		return;
+	}
+
 	if (mIndex < 0) return;
 
 	// Do nothing if it's already correctly set.
@@ -594,6 +610,11 @@ GLint LLTexUnit::getTextureSourceType(eTextureBlendSrc src, bool isAlpha)
 
 void LLTexUnit::setTextureCombiner(eTextureBlendOp op, eTextureBlendSrc src1, eTextureBlendSrc src2, bool isAlpha)
 {
+	if (LLGLSLShader::sNoFixedFunction)
+	{ //register combiners do nothing when not using fixed function
+		return;
+	}	
+
 	if (mIndex < 0) return;
 
 	activate();
diff --git a/indra/llrender/llrender.h b/indra/llrender/llrender.h
index 41e7b35341..9eedebe2ce 100644
--- a/indra/llrender/llrender.h
+++ b/indra/llrender/llrender.h
@@ -52,6 +52,8 @@ class LLTexUnit
 {
 	friend class LLRender;
 public:
+	static U32 sWhiteTexture;
+
 	typedef enum
 	{
 		TT_TEXTURE = 0,			// Standard 2D Texture
diff --git a/indra/llrender/llvertexbuffer.cpp b/indra/llrender/llvertexbuffer.cpp
index 82c5efe0ac..1180afa631 100644
--- a/indra/llrender/llvertexbuffer.cpp
+++ b/indra/llrender/llvertexbuffer.cpp
@@ -35,6 +35,8 @@
 #include "llmemtype.h"
 #include "llrender.h"
 #include "llvector4a.h"
+#include "llglslshader.h"
+
 
 //============================================================================
 
@@ -1113,8 +1115,7 @@ U8* LLVertexBuffer::mapVertexBuffer(S32 type, S32 index, S32 count, bool map_ran
 						src = (U8*) glMapBufferRange(GL_ARRAY_BUFFER_ARB, offset, length, 
 							GL_MAP_WRITE_BIT | 
 							GL_MAP_FLUSH_EXPLICIT_BIT | 
-							GL_MAP_INVALIDATE_RANGE_BIT | 
-							GL_MAP_UNSYNCHRONIZED_BIT);
+							GL_MAP_INVALIDATE_RANGE_BIT);
 #endif
 					}
 					else
@@ -1122,8 +1123,7 @@ U8* LLVertexBuffer::mapVertexBuffer(S32 type, S32 index, S32 count, bool map_ran
 #ifdef GL_ARB_map_buffer_range
 						src = (U8*) glMapBufferRange(GL_ARRAY_BUFFER_ARB, 0, mSize, 
 							GL_MAP_WRITE_BIT | 
-							GL_MAP_FLUSH_EXPLICIT_BIT |
-							GL_MAP_UNSYNCHRONIZED_BIT);
+							GL_MAP_FLUSH_EXPLICIT_BIT);
 #endif
 					}
 				}
@@ -1280,8 +1280,7 @@ U8* LLVertexBuffer::mapIndexBuffer(S32 index, S32 count, bool map_range)
 						src = (U8*) glMapBufferRange(GL_ELEMENT_ARRAY_BUFFER_ARB, offset, length, 
 							GL_MAP_WRITE_BIT | 
 							GL_MAP_FLUSH_EXPLICIT_BIT | 
-							GL_MAP_INVALIDATE_RANGE_BIT |
-							GL_MAP_UNSYNCHRONIZED_BIT);
+							GL_MAP_INVALIDATE_RANGE_BIT);
 #endif
 					}
 					else
@@ -1289,8 +1288,7 @@ U8* LLVertexBuffer::mapIndexBuffer(S32 index, S32 count, bool map_range)
 #ifdef GL_ARB_map_buffer_range
 						src = (U8*) glMapBufferRange(GL_ELEMENT_ARRAY_BUFFER_ARB, 0, sizeof(U16)*mNumIndices, 
 							GL_MAP_WRITE_BIT | 
-							GL_MAP_FLUSH_EXPLICIT_BIT |
-							GL_MAP_UNSYNCHRONIZED_BIT);
+							GL_MAP_FLUSH_EXPLICIT_BIT);
 #endif
 					}
 				}
diff --git a/indra/llui/llui.cpp b/indra/llui/llui.cpp
index 8020ca802b..28d7e0a5ba 100644
--- a/indra/llui/llui.cpp
+++ b/indra/llui/llui.cpp
@@ -95,7 +95,6 @@ static LLDefaultChildRegistry::Register<LLSearchEditor> register_search_editor("
 // register other widgets which otherwise may not be linked in
 static LLDefaultChildRegistry::Register<LLLoadingIndicator> register_loading_indicator("loading_indicator");
 
-
 //
 // Functions
 //
@@ -524,8 +523,15 @@ void gl_draw_scaled_image_with_border(S32 x, S32 y, S32 width, S32 height, LLTex
 	
 	if (solid_color)
 	{
-		gGL.getTexUnit(0)->setTextureColorBlend(LLTexUnit::TBO_REPLACE, LLTexUnit::TBS_PREV_COLOR);
-		gGL.getTexUnit(0)->setTextureAlphaBlend(LLTexUnit::TBO_MULT, LLTexUnit::TBS_TEX_ALPHA, LLTexUnit::TBS_VERT_ALPHA);
+		if (LLGLSLShader::sNoFixedFunction)
+		{
+			gSolidColorProgram.bind();
+		}
+		else
+		{
+			gGL.getTexUnit(0)->setTextureColorBlend(LLTexUnit::TBO_REPLACE, LLTexUnit::TBS_PREV_COLOR);
+			gGL.getTexUnit(0)->setTextureAlphaBlend(LLTexUnit::TBO_MULT, LLTexUnit::TBS_TEX_ALPHA, LLTexUnit::TBS_VERT_ALPHA);
+		}
 	}
 
 	gGL.getTexUnit(0)->bind(image);
@@ -699,7 +705,14 @@ void gl_draw_scaled_image_with_border(S32 x, S32 y, S32 width, S32 height, LLTex
 
 	if (solid_color)
 	{
-		gGL.getTexUnit(0)->setTextureBlendType(LLTexUnit::TB_MULT);
+		if (LLGLSLShader::sNoFixedFunction)
+		{
+			gUIProgram.bind();
+		}
+		else
+		{
+			gGL.getTexUnit(0)->setTextureBlendType(LLTexUnit::TB_MULT);
+		}
 	}
 }
 
diff --git a/indra/llui/llui.h b/indra/llui/llui.h
index c583d58d5a..a04b232a28 100644
--- a/indra/llui/llui.h
+++ b/indra/llui/llui.h
@@ -33,6 +33,7 @@
 #include "llrect.h"
 #include "llcontrol.h"
 #include "llcoord.h"
+#include "llglslshader.h"
 #include "llinitparam.h"
 #include "llregistry.h"
 #include "lluicolor.h"
@@ -47,6 +48,7 @@
 // for initparam specialization
 #include "llfontgl.h"
 
+
 class LLColor4; 
 class LLVector3;
 class LLVector2;
@@ -484,4 +486,7 @@ namespace LLInitParam
 	};
 }
 
+extern LLGLSLShader gSolidColorProgram;
+extern LLGLSLShader gUIProgram;
+
 #endif
diff --git a/indra/newview/app_settings/logcontrol.xml b/indra/newview/app_settings/logcontrol.xml
index 9f4e89691f..ae72dee900 100644
--- a/indra/newview/app_settings/logcontrol.xml
+++ b/indra/newview/app_settings/logcontrol.xml
@@ -44,7 +44,6 @@
 						<array>
 							<!-- sample entry for debugging a specific item	-->
 <!--						<string>Voice</string>							-->
-              <string>Capabilities</string>
 						</array>
 				</map>
 			</array>
diff --git a/indra/newview/app_settings/shaders/class1/interface/customalphaF.glsl b/indra/newview/app_settings/shaders/class1/interface/customalphaF.glsl
new file mode 100644
index 0000000000..3827c72f4c
--- /dev/null
+++ b/indra/newview/app_settings/shaders/class1/interface/customalphaF.glsl
@@ -0,0 +1,17 @@
+/** 
+ * @file customalphaF.glsl
+ *
+ * $LicenseInfo:firstyear=2007&license=viewerlgpl$
+ * $/LicenseInfo$
+ */
+ 
+uniform sampler2D diffuseMap;
+
+uniform float custom_alpha;
+
+void main() 
+{
+	vec4 color = gl_Color*texture2D(diffuseMap, gl_TexCoord[0].xy);
+	color.a *= custom_alpha;
+	gl_FragColor = color;
+}
diff --git a/indra/newview/app_settings/shaders/class1/interface/customalphaV.glsl b/indra/newview/app_settings/shaders/class1/interface/customalphaV.glsl
new file mode 100644
index 0000000000..04bfff22c1
--- /dev/null
+++ b/indra/newview/app_settings/shaders/class1/interface/customalphaV.glsl
@@ -0,0 +1,16 @@
+/** 
+ * @file customalphaV.glsl
+ *
+ * $LicenseInfo:firstyear=2007&license=viewerlgpl$
+ * $/LicenseInfo$
+ */
+ 
+
+
+void main()
+{
+	gl_Position = gl_ModelViewProjectionMatrix * gl_Vertex;
+	gl_TexCoord[0] = gl_MultiTexCoord0;
+	gl_FrontColor = gl_Color;
+}
+
diff --git a/indra/newview/app_settings/shaders/class1/interface/glowcombineF.glsl b/indra/newview/app_settings/shaders/class1/interface/glowcombineF.glsl
new file mode 100644
index 0000000000..a60fb1eaa7
--- /dev/null
+++ b/indra/newview/app_settings/shaders/class1/interface/glowcombineF.glsl
@@ -0,0 +1,17 @@
+/** 
+ * @file glowcombineF.glsl
+ *
+ * $LicenseInfo:firstyear=2007&license=viewerlgpl$
+ * $/LicenseInfo$
+ */
+ 
+#extension GL_ARB_texture_rectangle : enable
+
+uniform sampler2D glowMap;
+uniform sampler2DRect screenMap;
+
+void main() 
+{
+	gl_FragColor = texture2D(glowMap, gl_TexCoord[0].xy) +
+					texture2DRect(screenMap, gl_TexCoord[1].xy);
+}
diff --git a/indra/newview/app_settings/shaders/class1/interface/glowcombineV.glsl b/indra/newview/app_settings/shaders/class1/interface/glowcombineV.glsl
new file mode 100644
index 0000000000..ce183ec154
--- /dev/null
+++ b/indra/newview/app_settings/shaders/class1/interface/glowcombineV.glsl
@@ -0,0 +1,15 @@
+/** 
+ * @file glowcombineV.glsl
+ *
+ * $LicenseInfo:firstyear=2007&license=viewerlgpl$
+ * $/LicenseInfo$
+ */
+ 
+
+void main()
+{
+	gl_Position = gl_ModelViewProjectionMatrix * gl_Vertex;
+	gl_TexCoord[0] = gl_MultiTexCoord0;
+	gl_TexCoord[1] = gl_MultiTexCoord1;
+}
+
diff --git a/indra/newview/app_settings/shaders/class1/interface/occlusionF.glsl b/indra/newview/app_settings/shaders/class1/interface/occlusionF.glsl
new file mode 100644
index 0000000000..b140712f18
--- /dev/null
+++ b/indra/newview/app_settings/shaders/class1/interface/occlusionF.glsl
@@ -0,0 +1,11 @@
+/** 
+ * @file occlusionF.glsl
+ *
+ * $LicenseInfo:firstyear=2007&license=viewerlgpl$
+ * $/LicenseInfo$
+ */
+ 
+void main() 
+{
+	gl_FragColor = vec4(1,1,1,1);
+}
diff --git a/indra/newview/app_settings/shaders/class1/interface/occlusionV.glsl b/indra/newview/app_settings/shaders/class1/interface/occlusionV.glsl
new file mode 100644
index 0000000000..5a5d0ec506
--- /dev/null
+++ b/indra/newview/app_settings/shaders/class1/interface/occlusionV.glsl
@@ -0,0 +1,12 @@
+/** 
+ * @file uiV.glsl
+ *
+ * $LicenseInfo:firstyear=2007&license=viewerlgpl$
+ * $/LicenseInfo$
+ */
+
+void main()
+{
+	gl_Position = gl_ModelViewProjectionMatrix * gl_Vertex;
+}
+
diff --git a/indra/newview/app_settings/shaders/class1/interface/solidcolorF.glsl b/indra/newview/app_settings/shaders/class1/interface/solidcolorF.glsl
new file mode 100644
index 0000000000..ae943cc438
--- /dev/null
+++ b/indra/newview/app_settings/shaders/class1/interface/solidcolorF.glsl
@@ -0,0 +1,15 @@
+/** 
+ * @file twotextureaddF.glsl
+ *
+ * $LicenseInfo:firstyear=2007&license=viewerlgpl$
+ * $/LicenseInfo$
+ */
+ 
+uniform sampler2D tex0;
+
+void main() 
+{
+	float alpha = texture2D(tex0, gl_TexCoord[0].xy).a;
+
+	gl_FragColor = vec4(gl_Color.rgb, alpha);
+}
diff --git a/indra/newview/app_settings/shaders/class1/interface/solidcolorV.glsl b/indra/newview/app_settings/shaders/class1/interface/solidcolorV.glsl
new file mode 100644
index 0000000000..5a854b4e02
--- /dev/null
+++ b/indra/newview/app_settings/shaders/class1/interface/solidcolorV.glsl
@@ -0,0 +1,15 @@
+/** 
+ * @file solidcolorV.glsl
+ *
+ * $LicenseInfo:firstyear=2007&license=viewerlgpl$
+ * $/LicenseInfo$
+ */
+ 
+
+
+void main()
+{
+	gl_Position = gl_ModelViewProjectionMatrix * gl_Vertex;
+	gl_TexCoord[0] = gl_MultiTexCoord0;
+}
+
diff --git a/indra/newview/app_settings/shaders/class1/interface/twotextureaddF.glsl b/indra/newview/app_settings/shaders/class1/interface/twotextureaddF.glsl
new file mode 100644
index 0000000000..d81b56fdb9
--- /dev/null
+++ b/indra/newview/app_settings/shaders/class1/interface/twotextureaddF.glsl
@@ -0,0 +1,14 @@
+/** 
+ * @file twotextureaddF.glsl
+ *
+ * $LicenseInfo:firstyear=2007&license=viewerlgpl$
+ * $/LicenseInfo$
+ */
+ 
+uniform sampler2D tex0;
+uniform sampler2D tex1;
+
+void main() 
+{
+	gl_FragColor = texture2D(tex0, gl_TexCoord[0].xy)+texture2D(tex1, gl_TexCoord[1].xy);
+}
diff --git a/indra/newview/app_settings/shaders/class1/interface/twotextureaddV.glsl b/indra/newview/app_settings/shaders/class1/interface/twotextureaddV.glsl
new file mode 100644
index 0000000000..f685b112b4
--- /dev/null
+++ b/indra/newview/app_settings/shaders/class1/interface/twotextureaddV.glsl
@@ -0,0 +1,16 @@
+/** 
+ * @file twotextureaddV.glsl
+ *
+ * $LicenseInfo:firstyear=2007&license=viewerlgpl$
+ * $/LicenseInfo$
+ */
+ 
+
+
+void main()
+{
+	gl_Position = gl_ModelViewProjectionMatrix * gl_Vertex;
+	gl_TexCoord[0] = gl_MultiTexCoord0;
+	gl_TexCoord[1] = gl_MultiTexCoord1;
+}
+
diff --git a/indra/newview/app_settings/shaders/class1/interface/uiF.glsl b/indra/newview/app_settings/shaders/class1/interface/uiF.glsl
new file mode 100644
index 0000000000..9dec7a56ba
--- /dev/null
+++ b/indra/newview/app_settings/shaders/class1/interface/uiF.glsl
@@ -0,0 +1,13 @@
+/** 
+ * @file uiF.glsl
+ *
+ * $LicenseInfo:firstyear=2007&license=viewerlgpl$
+ * $/LicenseInfo$
+ */
+ 
+uniform sampler2D diffuseMap;
+
+void main() 
+{
+	gl_FragColor = gl_Color*texture2D(diffuseMap, gl_TexCoord[0].xy);
+}
diff --git a/indra/newview/app_settings/shaders/class1/interface/uiV.glsl b/indra/newview/app_settings/shaders/class1/interface/uiV.glsl
new file mode 100644
index 0000000000..9ca6cae5c5
--- /dev/null
+++ b/indra/newview/app_settings/shaders/class1/interface/uiV.glsl
@@ -0,0 +1,16 @@
+/** 
+ * @file uiV.glsl
+ *
+ * $LicenseInfo:firstyear=2007&license=viewerlgpl$
+ * $/LicenseInfo$
+ */
+ 
+
+
+void main()
+{
+	gl_Position = gl_ModelViewProjectionMatrix * gl_Vertex;
+	gl_TexCoord[0] = gl_MultiTexCoord0;
+	gl_FrontColor = gl_Color;
+}
+
diff --git a/indra/newview/app_settings/shaders/class1/objects/bumpF.glsl b/indra/newview/app_settings/shaders/class1/objects/bumpF.glsl
new file mode 100644
index 0000000000..587ab93a80
--- /dev/null
+++ b/indra/newview/app_settings/shaders/class1/objects/bumpF.glsl
@@ -0,0 +1,17 @@
+/** 
+ * @file bumpF.glsl
+ *
+ * $LicenseInfo:firstyear=2007&license=viewerlgpl$
+ * $/LicenseInfo$
+ */
+ 
+uniform sampler2D texture0;
+uniform sampler2D texture1;
+
+void main() 
+{
+	float tex0 = texture2D(texture0, gl_TexCoord[0].xy).a;
+	float tex1 = texture2D(texture1, gl_TexCoord[1].xy).a;
+
+	gl_FragColor = vec4(tex0+(1.0-tex1)-0.5);
+}
diff --git a/indra/newview/app_settings/shaders/class1/objects/bumpV.glsl b/indra/newview/app_settings/shaders/class1/objects/bumpV.glsl
new file mode 100644
index 0000000000..056d1a9582
--- /dev/null
+++ b/indra/newview/app_settings/shaders/class1/objects/bumpV.glsl
@@ -0,0 +1,16 @@
+/** 
+ * @file bumpV.glsl
+ *
+ * $LicenseInfo:firstyear=2007&license=viewerlgpl$
+ * $/LicenseInfo$
+ */
+ 
+
+void main()
+{
+	//transform vertex
+	gl_Position = gl_ModelViewProjectionMatrix*gl_Vertex;
+	gl_TexCoord[0] = gl_TextureMatrix[0] * gl_MultiTexCoord0;
+	gl_TexCoord[1] = gl_TextureMatrix[1] * gl_MultiTexCoord1;
+	gl_FrontColor = gl_Color;
+}
diff --git a/indra/newview/lldrawpool.cpp b/indra/newview/lldrawpool.cpp
index fa7d6e2a40..286284f828 100644
--- a/indra/newview/lldrawpool.cpp
+++ b/indra/newview/lldrawpool.cpp
@@ -190,15 +190,16 @@ void LLDrawPool::renderPostDeferred(S32 pass)
 //virtual
 void LLDrawPool::endRenderPass( S32 pass )
 {
-	for (U32 i = 0; i < gGLManager.mNumTextureImageUnits; i++)
+	/*for (U32 i = 0; i < gGLManager.mNumTextureImageUnits; i++)
 	{ //dummy cleanup of any currently bound textures
 		if (gGL.getTexUnit(i)->getCurrType() != LLTexUnit::TT_NONE)
 		{
 			gGL.getTexUnit(i)->unbind(gGL.getTexUnit(i)->getCurrType());
 			gGL.getTexUnit(i)->disable();
 		}
-	}
+	}*/
 
+	//make sure channel 0 is active channel
 	gGL.getTexUnit(0)->activate();
 }
 
diff --git a/indra/newview/lldrawpoolalpha.cpp b/indra/newview/lldrawpoolalpha.cpp
index ad7e3ad593..ddcf42e523 100644
--- a/indra/newview/lldrawpoolalpha.cpp
+++ b/indra/newview/lldrawpoolalpha.cpp
@@ -138,6 +138,7 @@ void LLDrawPoolAlpha::beginPostDeferredPass(S32 pass)
 		gPipeline.mDeferredDepth.bindTarget();
 		simple_shader = NULL;
 		fullbright_shader = NULL;
+		gObjectFullbrightProgram.bind();
 	}
 
 	deferred_render = TRUE;
@@ -156,6 +157,7 @@ void LLDrawPoolAlpha::endPostDeferredPass(S32 pass)
 	{
 		gPipeline.mDeferredDepth.flush();
 		gPipeline.mScreen.bindTarget();
+		gObjectFullbrightProgram.unbind();
 	}
 
 	deferred_render = FALSE;
@@ -238,7 +240,7 @@ void LLDrawPoolAlpha::render(S32 pass)
 				fullbright_shader->bind();
 			}
 			pushBatches(LLRenderPass::PASS_FULLBRIGHT_ALPHA_MASK, getVertexDataMask() | LLVertexBuffer::MAP_TEXTURE_INDEX, TRUE, TRUE);
-			LLGLSLShader::bindNoShader();
+			//LLGLSLShader::bindNoShader();
 		}
 		else
 		{
diff --git a/indra/newview/lldrawpoolbump.cpp b/indra/newview/lldrawpoolbump.cpp
index 813b3820ee..d801f6df18 100644
--- a/indra/newview/lldrawpoolbump.cpp
+++ b/indra/newview/lldrawpoolbump.cpp
@@ -464,11 +464,15 @@ void LLDrawPoolBump::unbindCubeMap(LLGLSLShader* shader, S32 shader_level, S32&
 			}
 		}
 	}
-	gGL.getTexUnit(diffuse_channel)->disable();
-	gGL.getTexUnit(cube_channel)->disable();
 
-	gGL.getTexUnit(0)->unbind(LLTexUnit::TT_TEXTURE);
-	gGL.getTexUnit(0)->setTextureBlendType(LLTexUnit::TB_MULT);
+	if (!LLGLSLShader::sNoFixedFunction)
+	{
+		gGL.getTexUnit(diffuse_channel)->disable();
+		gGL.getTexUnit(cube_channel)->disable();
+
+		gGL.getTexUnit(0)->unbind(LLTexUnit::TT_TEXTURE);
+		gGL.getTexUnit(0)->setTextureBlendType(LLTexUnit::TB_MULT);
+	}
 }
 
 void LLDrawPoolBump::endShiny(bool invisible)
@@ -583,19 +587,19 @@ void LLDrawPoolBump::endFullbrightShiny()
 		cube_map->disable();
 		cube_map->restoreMatrix();
 
-		if (diffuse_channel != 0)
+		/*if (diffuse_channel != 0)
 		{
 			shader->disableTexture(LLViewerShaderMgr::DIFFUSE_MAP);
 		}
 		gGL.getTexUnit(0)->activate();
-		gGL.getTexUnit(0)->enable(LLTexUnit::TT_TEXTURE);
+		gGL.getTexUnit(0)->enable(LLTexUnit::TT_TEXTURE);*/
 
 		shader->unbind();
-		gGL.getTexUnit(0)->setTextureBlendType(LLTexUnit::TB_MULT);
+		//gGL.getTexUnit(0)->setTextureBlendType(LLTexUnit::TB_MULT);
 	}
 	
-	gGL.getTexUnit(0)->unbind(LLTexUnit::TT_TEXTURE);
-	gGL.getTexUnit(0)->setTextureBlendType(LLTexUnit::TB_MULT);
+	//gGL.getTexUnit(0)->unbind(LLTexUnit::TT_TEXTURE);
+	//gGL.getTexUnit(0)->setTextureBlendType(LLTexUnit::TB_MULT);
 
 	diffuse_channel = -1;
 	cube_channel = 0;
@@ -706,36 +710,44 @@ void LLDrawPoolBump::beginBump(U32 pass)
 	// Optional second pass: emboss bump map
 	stop_glerror();
 
-	// TEXTURE UNIT 0
-	// Output.rgb = texture at texture coord 0
-	gGL.getTexUnit(0)->activate();
+	if (LLGLSLShader::sNoFixedFunction)
+	{
+		gObjectBumpProgram.bind();
+	}
+	else
+	{
+		// TEXTURE UNIT 0
+		// Output.rgb = texture at texture coord 0
+		gGL.getTexUnit(0)->activate();
 
-	gGL.getTexUnit(0)->setTextureColorBlend(LLTexUnit::TBO_REPLACE, LLTexUnit::TBS_TEX_ALPHA);
-	gGL.getTexUnit(0)->setTextureAlphaBlend(LLTexUnit::TBO_REPLACE, LLTexUnit::TBS_TEX_ALPHA);
+		gGL.getTexUnit(0)->setTextureColorBlend(LLTexUnit::TBO_REPLACE, LLTexUnit::TBS_TEX_ALPHA);
+		gGL.getTexUnit(0)->setTextureAlphaBlend(LLTexUnit::TBO_REPLACE, LLTexUnit::TBS_TEX_ALPHA);
 
-	// TEXTURE UNIT 1
-	gGL.getTexUnit(1)->activate();
+		// TEXTURE UNIT 1
+		gGL.getTexUnit(1)->activate();
  
-	gGL.getTexUnit(1)->enable(LLTexUnit::TT_TEXTURE);
+		gGL.getTexUnit(1)->enable(LLTexUnit::TT_TEXTURE);
+
+		gGL.getTexUnit(1)->setTextureColorBlend(LLTexUnit::TBO_ADD_SIGNED, LLTexUnit::TBS_PREV_COLOR, LLTexUnit::TBS_ONE_MINUS_TEX_ALPHA);
+		gGL.getTexUnit(1)->setTextureAlphaBlend(LLTexUnit::TBO_REPLACE, LLTexUnit::TBS_TEX_ALPHA);
 
-	gGL.getTexUnit(1)->setTextureColorBlend(LLTexUnit::TBO_ADD_SIGNED, LLTexUnit::TBS_PREV_COLOR, LLTexUnit::TBS_ONE_MINUS_TEX_ALPHA);
-	gGL.getTexUnit(1)->setTextureAlphaBlend(LLTexUnit::TBO_REPLACE, LLTexUnit::TBS_TEX_ALPHA);
+		// src	= tex0 + (1 - tex1) - 0.5
+		//		= (bump0/2 + 0.5) + (1 - (bump1/2 + 0.5)) - 0.5
+		//		= (1 + bump0 - bump1) / 2
 
-	// src	= tex0 + (1 - tex1) - 0.5
-	//		= (bump0/2 + 0.5) + (1 - (bump1/2 + 0.5)) - 0.5
-	//		= (1 + bump0 - bump1) / 2
 
+		// Blend: src * dst + dst * src
+		//		= 2 * src * dst
+		//		= 2 * ((1 + bump0 - bump1) / 2) * dst   [0 - 2 * dst]
+		//		= (1 + bump0 - bump1) * dst.rgb
+		//		= dst.rgb + dst.rgb * (bump0 - bump1)
+
+		gGL.getTexUnit(0)->activate();
+		gGL.getTexUnit(1)->unbind(LLTexUnit::TT_TEXTURE);
+	}
 
-	// Blend: src * dst + dst * src
-	//		= 2 * src * dst
-	//		= 2 * ((1 + bump0 - bump1) / 2) * dst   [0 - 2 * dst]
-	//		= (1 + bump0 - bump1) * dst.rgb
-	//		= dst.rgb + dst.rgb * (bump0 - bump1)
 	gGL.setSceneBlendType(LLRender::BT_MULT_X2);
-	gGL.getTexUnit(0)->activate();
 	stop_glerror();
-
-	gGL.getTexUnit(1)->unbind(LLTexUnit::TT_TEXTURE);
 }
 
 //static
@@ -765,14 +777,21 @@ void LLDrawPoolBump::endBump(U32 pass)
 		return;
 	}
 
-	// Disable texture unit 1
-	gGL.getTexUnit(1)->activate();
-	gGL.getTexUnit(1)->disable();
-	gGL.getTexUnit(1)->setTextureBlendType(LLTexUnit::TB_MULT);
+	if (LLGLSLShader::sNoFixedFunction)
+	{
+		gObjectBumpProgram.unbind();
+	}
+	else
+	{
+		// Disable texture blending on unit 1
+		gGL.getTexUnit(1)->activate();
+		//gGL.getTexUnit(1)->disable();
+		gGL.getTexUnit(1)->setTextureBlendType(LLTexUnit::TB_MULT);
 
-	// Disable texture unit 0
-	gGL.getTexUnit(0)->activate();
-	gGL.getTexUnit(0)->setTextureBlendType(LLTexUnit::TB_MULT);
+		// Disable texture blending on unit 0
+		gGL.getTexUnit(0)->activate();
+		gGL.getTexUnit(0)->setTextureBlendType(LLTexUnit::TB_MULT);
+	}
 	
 	gGL.setSceneBlendType(LLRender::BT_ALPHA);
 }
@@ -1407,6 +1426,11 @@ void LLDrawPoolInvisible::render(S32 pass)
 { //render invisiprims
 	LLFastTimer t(FTM_RENDER_INVISIBLE);
   
+	if (gPipeline.canUseVertexShaders())
+	{
+		gOcclusionProgram.bind();
+	}
+
 	U32 invisi_mask = LLVertexBuffer::MAP_VERTEX;
 	glStencilMask(0);
 	gGL.setColorMask(false, false);
@@ -1414,6 +1438,11 @@ void LLDrawPoolInvisible::render(S32 pass)
 	gGL.setColorMask(true, false);
 	glStencilMask(0xFFFFFFFF);
 
+	if (gPipeline.canUseVertexShaders())
+	{
+		gOcclusionProgram.unbind();
+	}
+
 	if (gPipeline.hasRenderBatches(LLRenderPass::PASS_INVISI_SHINY))
 	{
 		beginShiny(true);
diff --git a/indra/newview/lldrawpoolsimple.cpp b/indra/newview/lldrawpoolsimple.cpp
index 5dbb27cabb..224f149c6b 100644
--- a/indra/newview/lldrawpoolsimple.cpp
+++ b/indra/newview/lldrawpoolsimple.cpp
@@ -49,6 +49,8 @@ void LLDrawPoolGlow::beginPostDeferredPass(S32 pass)
 	gDeferredFullbrightProgram.bind();
 }
 
+static LLFastTimer::DeclareTimer FTM_RENDER_GLOW_PUSH("Glow Push");
+
 void LLDrawPoolGlow::renderPostDeferred(S32 pass)
 {
 	LLFastTimer t(FTM_RENDER_GLOW);
@@ -62,7 +64,11 @@ void LLDrawPoolGlow::renderPostDeferred(S32 pass)
 	
 	LLGLDepthTest depth(GL_TRUE, GL_FALSE);
 	gGL.setColorMask(false, true);
-	pushBatches(LLRenderPass::PASS_GLOW, getVertexDataMask() | LLVertexBuffer::MAP_TEXTURE_INDEX, TRUE, TRUE);
+
+	{
+		LLFastTimer t(FTM_RENDER_GLOW_PUSH);
+		pushBatches(LLRenderPass::PASS_GLOW, getVertexDataMask() | LLVertexBuffer::MAP_TEXTURE_INDEX, TRUE, TRUE);
+	}
 	
 	gGL.setColorMask(true, false);
 	gGL.setSceneBlendType(LLRender::BT_ALPHA);	
@@ -374,10 +380,14 @@ void LLDrawPoolFullbright::endRenderPass(S32 pass)
 	LLFastTimer t(FTM_RENDER_FULLBRIGHT);
 	LLRenderPass::endRenderPass(pass);
 
+	stop_glerror();
+
 	if (mVertexShaderLevel > 0)
 	{
 		fullbright_shader->unbind();
 	}
+
+	stop_glerror();
 }
 
 void LLDrawPoolFullbright::render(S32 pass)
@@ -385,6 +395,8 @@ void LLDrawPoolFullbright::render(S32 pass)
 	LLFastTimer t(FTM_RENDER_FULLBRIGHT);
 	gGL.setSceneBlendType(LLRender::BT_ALPHA);
 
+	stop_glerror();
+
 	if (mVertexShaderLevel > 0)
 	{
 		fullbright_shader->bind();
@@ -398,6 +410,8 @@ void LLDrawPoolFullbright::render(S32 pass)
 		U32 fullbright_mask = LLVertexBuffer::MAP_VERTEX | LLVertexBuffer::MAP_TEXCOORD0 | LLVertexBuffer::MAP_COLOR;
 		renderTexture(LLRenderPass::PASS_FULLBRIGHT, fullbright_mask);
 	}
+
+	stop_glerror();
 }
 
 S32 LLDrawPoolFullbright::getNumPasses()
diff --git a/indra/newview/lldrawpoolsky.cpp b/indra/newview/lldrawpoolsky.cpp
index 030d6e1110..efffb2df9e 100644
--- a/indra/newview/lldrawpoolsky.cpp
+++ b/indra/newview/lldrawpoolsky.cpp
@@ -82,6 +82,10 @@ void LLDrawPoolSky::render(S32 pass)
 		mShader = &gObjectFullbrightWaterProgram;
 		mShader->bind();
 	}
+	else if (LLGLSLShader::sNoFixedFunction)
+	{ //just use the UI shader (generic single texture no lighting)
+		gUIProgram.bind();
+	}
 	else
 	{
 		// don't use shaders!
@@ -139,6 +143,7 @@ void LLDrawPoolSky::renderSkyCubeFace(U8 side)
 
 	if (LLSkyTex::doInterpolate())
 	{
+		
 		LLGLEnable blend(GL_BLEND);
 		mSkyTex[side].bindTexture(FALSE);
 		glColor4f(1, 1, 1, LLSkyTex::getInterpVal()); // lighting is disabled
diff --git a/indra/newview/lldrawpooltree.cpp b/indra/newview/lldrawpooltree.cpp
index 81c796b146..429e06b227 100644
--- a/indra/newview/lldrawpooltree.cpp
+++ b/indra/newview/lldrawpooltree.cpp
@@ -73,7 +73,7 @@ void LLDrawPoolTree::beginRenderPass(S32 pass)
 		shader = &gObjectSimpleNonIndexedProgram;
 	}
 
-	if (gPipeline.canUseWindLightShadersOnObjects())
+	if (gPipeline.canUseVertexShaders())
 	{
 		shader->bind();
 	}
diff --git a/indra/newview/lldrawpoolwlsky.cpp b/indra/newview/lldrawpoolwlsky.cpp
index bf79c2100c..f9fd501072 100644
--- a/indra/newview/lldrawpoolwlsky.cpp
+++ b/indra/newview/lldrawpoolwlsky.cpp
@@ -189,16 +189,31 @@ void LLDrawPoolWLSky::renderStars(void) const
 	glRotatef(gFrameTimeSeconds*0.01f, 0.f, 0.f, 1.f);
 	// gl_FragColor.rgb = gl_Color.rgb;
 	// gl_FragColor.a = gl_Color.a * star_alpha.a;
-	gGL.getTexUnit(0)->setTextureColorBlend(LLTexUnit::TBO_MULT, LLTexUnit::TBS_TEX_COLOR, LLTexUnit::TBS_VERT_COLOR);
-	gGL.getTexUnit(0)->setTextureAlphaBlend(LLTexUnit::TBO_MULT_X2, LLTexUnit::TBS_CONST_ALPHA, LLTexUnit::TBS_TEX_ALPHA);
-	glTexEnvfv(GL_TEXTURE_ENV, GL_TEXTURE_ENV_COLOR, star_alpha.mV);
+	if (LLGLSLShader::sNoFixedFunction)
+	{
+		gCustomAlphaProgram.bind();
+		gCustomAlphaProgram.uniform1f("custom_alpha", star_alpha.mV[3]);
+	}
+	else
+	{
+		gGL.getTexUnit(0)->setTextureColorBlend(LLTexUnit::TBO_MULT, LLTexUnit::TBS_TEX_COLOR, LLTexUnit::TBS_VERT_COLOR);
+		gGL.getTexUnit(0)->setTextureAlphaBlend(LLTexUnit::TBO_MULT_X2, LLTexUnit::TBS_CONST_ALPHA, LLTexUnit::TBS_TEX_ALPHA);
+		glTexEnvfv(GL_TEXTURE_ENV, GL_TEXTURE_ENV_COLOR, star_alpha.mV);
+	}
 
 	gSky.mVOWLSkyp->drawStars();
 
 	gGL.popMatrix();
-	
-	// and disable the combiner states
-	gGL.getTexUnit(0)->setTextureBlendType(LLTexUnit::TB_MULT);
+
+	if (LLGLSLShader::sNoFixedFunction)
+	{
+		gCustomAlphaProgram.unbind();
+	}
+	else
+	{
+		// and disable the combiner states
+		gGL.getTexUnit(0)->setTextureBlendType(LLTexUnit::TB_MULT);
+	}
 }
 
 void LLDrawPoolWLSky::renderSkyClouds(F32 camHeightLocal) const
@@ -242,6 +257,10 @@ void LLDrawPoolWLSky::renderHeavenlyBodies()
 
 	if (gSky.mVOSkyp->getMoon().getDraw() && face->getGeomCount())
 	{
+		if (gPipeline.canUseVertexShaders())
+		{
+			gUIProgram.bind();
+		}
 		// *NOTE: even though we already bound this texture above for the
 		// stars register combiners, we bind again here for defensive reasons,
 		// since LLImageGL::bind detects that it's a noop, and optimizes it out.
@@ -257,6 +276,11 @@ void LLDrawPoolWLSky::renderHeavenlyBodies()
 		
 		LLFacePool::LLOverrideFaceColor color_override(this, color);
 		face->renderIndexed();
+
+		if (gPipeline.canUseVertexShaders())
+		{
+			gUIProgram.unbind();
+		}
 	}
 }
 
diff --git a/indra/newview/llhudnametag.cpp b/indra/newview/llhudnametag.cpp
index 82e1f2dfb5..482294c8a6 100644
--- a/indra/newview/llhudnametag.cpp
+++ b/indra/newview/llhudnametag.cpp
@@ -477,7 +477,7 @@ void LLHUDNameTag::renderText(BOOL for_select)
 		
 	// Render label
 	{
-		gGL.getTexUnit(0)->setTextureBlendType(LLTexUnit::TB_MULT);
+		//gGL.getTexUnit(0)->setTextureBlendType(LLTexUnit::TB_MULT);
 
 		for(std::vector<LLHUDTextSegment>::iterator segment_iter = mLabelSegments.begin();
 			segment_iter != mLabelSegments.end(); ++segment_iter )
diff --git a/indra/newview/llspatialpartition.cpp b/indra/newview/llspatialpartition.cpp
index f99afa923b..e23b431457 100644
--- a/indra/newview/llspatialpartition.cpp
+++ b/indra/newview/llspatialpartition.cpp
@@ -47,6 +47,7 @@
 #include "llvoavatar.h"
 #include "llvolumemgr.h"
 #include "lltextureatlas.h"
+#include "llglslshader.h"
 
 static LLFastTimer::DeclareTimer FTM_FRUSTUM_CULL("Frustum Culling");
 static LLFastTimer::DeclareTimer FTM_CULL_REBOUND("Cull Rebound");
@@ -3176,6 +3177,8 @@ void renderPhysicsShape(LLDrawable* drawable, LLVOVolume* volume)
 				glColor4fv(line_color.mV);
 				LLVertexBuffer::unbind();
 
+				llassert(!LLGLSLShader::sNoFixedFunction || LLGLSLShader::sCurBoundShader != 0);
+
 				glVertexPointer(3, GL_FLOAT, 16, phys_volume->mHullPoints);
 				glDrawElements(GL_TRIANGLES, phys_volume->mNumHullIndices, GL_UNSIGNED_SHORT, phys_volume->mHullIndices);
 				
@@ -3257,7 +3260,7 @@ void renderPhysicsShape(LLDrawable* drawable, LLVOVolume* volume)
 		if (phys_volume->mHullPoints && phys_volume->mHullIndices)
 		{
 			glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
-			
+			llassert(!LLGLSLShader::sNoFixedFunction || LLGLSLShader::sCurBoundShader != 0);
 			LLVertexBuffer::unbind();
 			glVertexPointer(3, GL_FLOAT, 16, phys_volume->mHullPoints);
 			glColor4fv(line_color.mV);
diff --git a/indra/newview/lltexlayer.cpp b/indra/newview/lltexlayer.cpp
index bd41aa64f0..e8abee2fb7 100644
--- a/indra/newview/lltexlayer.cpp
+++ b/indra/newview/lltexlayer.cpp
@@ -45,6 +45,7 @@
 #include "llagentwearables.h"
 #include "llwearable.h"
 #include "llviewercontrol.h"
+#include "llviewershadermgr.h"
 #include "llviewervisualparam.h"
 
 //#include "../tools/imdebug/imdebug.h"
@@ -294,11 +295,17 @@ BOOL LLTexLayerSetBuffer::render()
 	
 	BOOL success = TRUE;
 
+	//hack to use fixed function when updating tex layer sets
+	bool no_ff = LLGLSLShader::sNoFixedFunction;
+	LLGLSLShader::sNoFixedFunction = false;
+	
 	// Composite the color data
 	LLGLSUIDefault gls_ui;
 	success &= mTexLayerSet->render( mOrigin.mX, mOrigin.mY, mFullWidth, mFullHeight );
 	gGL.flush();
 
+	LLGLSLShader::sNoFixedFunction = no_ff;
+	
 	if(upload_now)
 	{
 		if (!success)
diff --git a/indra/newview/llviewerdisplay.cpp b/indra/newview/llviewerdisplay.cpp
index 911fc8e1ed..39053fe9e4 100644
--- a/indra/newview/llviewerdisplay.cpp
+++ b/indra/newview/llviewerdisplay.cpp
@@ -616,6 +616,7 @@ void display(BOOL rebuild, F32 zoom_factor, int subfield, BOOL for_snapshot)
 				&& LLFeatureManager::getInstance()->isFeatureAvailable("UseOcclusion") 
 				&& gSavedSettings.getBOOL("UseOcclusion") 
 				&& gGLManager.mHasOcclusionQuery) ? 2 : 0;
+		LLTexUnit::sWhiteTexture = LLViewerFetchedTexture::sWhiteImagep->getTexName();
 
 		/*if (LLPipeline::sUseOcclusion && LLPipeline::sRenderDeferred)
 		{ //force occlusion on for all render types if doing deferred render (tighter shadow frustum)
@@ -709,6 +710,9 @@ void display(BOOL rebuild, F32 zoom_factor, int subfield, BOOL for_snapshot)
 			glClear(GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);
 		}
 
+		LLGLState::checkStates();
+		LLGLState::checkClientArrays();
+
 		//if (!for_snapshot)
 		{
 			LLMemType mt_gw(LLMemType::MTYPE_DISPLAY_GEN_REFLECTION);
@@ -717,6 +721,9 @@ void display(BOOL rebuild, F32 zoom_factor, int subfield, BOOL for_snapshot)
 			gPipeline.generateHighlight(*LLViewerCamera::getInstance());
 		}
 
+		LLGLState::checkStates();
+		LLGLState::checkClientArrays();
+
 		//////////////////////////////////////
 		//
 		// Update images, using the image stats generated during object update/culling
@@ -743,6 +750,10 @@ void display(BOOL rebuild, F32 zoom_factor, int subfield, BOOL for_snapshot)
 			LLImageGL::deleteDeadTextures();
 			stop_glerror();
 		}
+
+		LLGLState::checkStates();
+		LLGLState::checkClientArrays();
+
 		///////////////////////////////////
 		//
 		// StateSort
@@ -770,6 +781,9 @@ void display(BOOL rebuild, F32 zoom_factor, int subfield, BOOL for_snapshot)
 			}
 		}
 
+		LLGLState::checkStates();
+		LLGLState::checkClientArrays();
+
 		LLPipeline::sUseOcclusion = occlusion;
 
 		{
@@ -828,6 +842,9 @@ void display(BOOL rebuild, F32 zoom_factor, int subfield, BOOL for_snapshot)
 		LLPipeline::sUnderWaterRender = LLViewerCamera::getInstance()->cameraUnderWater() ? TRUE : FALSE;
 		LLPipeline::refreshRenderDeferred();
 		
+		LLGLState::checkStates();
+		LLGLState::checkClientArrays();
+
 		stop_glerror();
 
 		if (to_texture)
@@ -878,6 +895,14 @@ void display(BOOL rebuild, F32 zoom_factor, int subfield, BOOL for_snapshot)
 			stop_glerror();
 		}
 
+		for (U32 i = 0; i < gGLManager.mNumTextureImageUnits; i++)
+		{ //dummy cleanup of any currently bound textures
+			if (gGL.getTexUnit(i)->getCurrType() != LLTexUnit::TT_NONE)
+			{
+				gGL.getTexUnit(i)->unbind(gGL.getTexUnit(i)->getCurrType());
+				gGL.getTexUnit(i)->disable();
+			}
+		}
 		LLAppViewer::instance()->pingMainloopTimeout("Display:RenderFlush");		
 		
 		if (to_texture)
@@ -1339,7 +1364,7 @@ void render_ui_2d()
 	}
 
 	stop_glerror();
-	gGL.getTexUnit(0)->setTextureBlendType(LLTexUnit::TB_MULT);
+	//gGL.getTexUnit(0)->setTextureBlendType(LLTexUnit::TB_MULT);
 
 	// render outline for HUD
 	if (isAgentAvatarValid() && gAgentCamera.mHUDCurZoom < 0.98f)
diff --git a/indra/newview/llviewershadermgr.cpp b/indra/newview/llviewershadermgr.cpp
index e473901609..812b03a2e6 100644
--- a/indra/newview/llviewershadermgr.cpp
+++ b/indra/newview/llviewershadermgr.cpp
@@ -61,6 +61,14 @@ BOOL				LLViewerShaderMgr::sInitialized = FALSE;
 
 LLVector4			gShinyOrigin;
 
+//utility shaders
+LLGLSLShader	gOcclusionProgram;
+LLGLSLShader	gUIProgram;
+LLGLSLShader	gCustomAlphaProgram;
+LLGLSLShader	gGlowCombineProgram;
+LLGLSLShader	gTwoTextureAddProgram;
+LLGLSLShader	gSolidColorProgram;
+
 //object shaders
 LLGLSLShader		gObjectSimpleProgram;
 LLGLSLShader		gObjectSimpleWaterProgram;
@@ -70,6 +78,7 @@ LLGLSLShader		gObjectFullbrightShinyProgram;
 LLGLSLShader		gObjectFullbrightShinyWaterProgram;
 LLGLSLShader		gObjectShinyProgram;
 LLGLSLShader		gObjectShinyWaterProgram;
+LLGLSLShader		gObjectBumpProgram;
 
 LLGLSLShader		gObjectSimpleNonIndexedProgram;
 LLGLSLShader		gObjectSimpleNonIndexedWaterProgram;
@@ -169,6 +178,13 @@ LLViewerShaderMgr::LLViewerShaderMgr() :
 	mShaderList.push_back(&gWaterProgram);
 	mShaderList.push_back(&gAvatarEyeballProgram); 
 	mShaderList.push_back(&gObjectSimpleProgram);
+	mShaderList.push_back(&gObjectBumpProgram);
+	mShaderList.push_back(&gUIProgram);
+	mShaderList.push_back(&gCustomAlphaProgram);
+	mShaderList.push_back(&gGlowCombineProgram);
+	mShaderList.push_back(&gTwoTextureAddProgram);
+	mShaderList.push_back(&gSolidColorProgram);
+	mShaderList.push_back(&gOcclusionProgram);
 	mShaderList.push_back(&gObjectFullbrightProgram);
 	mShaderList.push_back(&gObjectFullbrightShinyProgram);
 	mShaderList.push_back(&gObjectFullbrightShinyWaterProgram);
@@ -410,9 +426,13 @@ void LLViewerShaderMgr::setShaders()
 	}
 	mMaxAvatarShaderLevel = 0;
 
+	LLGLSLShader::sNoFixedFunction = false;
 	if (LLFeatureManager::getInstance()->isFeatureAvailable("VertexShaderEnable") 
 		&& gSavedSettings.getBOOL("VertexShaderEnable"))
 	{
+		//using shaders, disable fixed function
+		LLGLSLShader::sNoFixedFunction = true;
+
 		S32 light_class = 2;
 		S32 env_class = 2;
 		S32 obj_class = 2;
@@ -554,6 +574,7 @@ void LLViewerShaderMgr::setShaders()
 		}
 		else
 		{
+			LLGLSLShader::sNoFixedFunction = false;
 			gPipeline.mVertexShadersEnabled = FALSE;
 			gPipeline.mVertexShadersLoaded = 0;
 			mVertexShaderLevel[SHADER_LIGHTING] = 0;
@@ -568,6 +589,7 @@ void LLViewerShaderMgr::setShaders()
 	}
 	else
 	{
+		LLGLSLShader::sNoFixedFunction = false;
 		gPipeline.mVertexShadersEnabled = FALSE;
 		gPipeline.mVertexShadersLoaded = 0;
 		mVertexShaderLevel[SHADER_LIGHTING] = 0;
@@ -591,7 +613,15 @@ void LLViewerShaderMgr::setShaders()
 
 void LLViewerShaderMgr::unloadShaders()
 {
+	gOcclusionProgram.unload();
+	gUIProgram.unload();
+	gCustomAlphaProgram.unload();
+	gGlowCombineProgram.unload();
+	gTwoTextureAddProgram.unload();
+	gSolidColorProgram.unload();
+
 	gObjectSimpleProgram.unload();
+	gObjectBumpProgram.unload();
 	gObjectSimpleWaterProgram.unload();
 	gObjectFullbrightProgram.unload();
 	gObjectFullbrightWaterProgram.unload();
@@ -1581,6 +1611,7 @@ BOOL LLViewerShaderMgr::loadShadersObject()
 		gObjectFullbrightShinyWaterProgram.unload();
 		gObjectShinyWaterProgram.unload();
 		gObjectSimpleProgram.unload();
+		gObjectBumpProgram.unload();
 		gObjectSimpleWaterProgram.unload();
 		gObjectFullbrightProgram.unload();
 		gObjectFullbrightWaterProgram.unload();
@@ -1753,6 +1784,22 @@ BOOL LLViewerShaderMgr::loadShadersObject()
 	
 	if (success)
 	{
+		gObjectBumpProgram.mName = "Bump Shader";
+		/*gObjectBumpProgram.mFeatures.calculatesLighting = true;
+		gObjectBumpProgram.mFeatures.calculatesAtmospherics = true;
+		gObjectBumpProgram.mFeatures.hasGamma = true;
+		gObjectBumpProgram.mFeatures.hasAtmospherics = true;
+		gObjectBumpProgram.mFeatures.hasLighting = true;
+		gObjectBumpProgram.mFeatures.mIndexedTextureChannels = 0;*/
+		gObjectBumpProgram.mShaderFiles.clear();
+		gObjectBumpProgram.mShaderFiles.push_back(make_pair("objects/bumpV.glsl", GL_VERTEX_SHADER_ARB));
+		gObjectBumpProgram.mShaderFiles.push_back(make_pair("objects/bumpF.glsl", GL_FRAGMENT_SHADER_ARB));
+		gObjectBumpProgram.mShaderLevel = mVertexShaderLevel[SHADER_OBJECT];
+		success = gObjectBumpProgram.createShader(NULL, NULL);
+	}
+	
+	if (success)
+	{
 		gObjectSimpleWaterProgram.mName = "Simple Water Shader";
 		gObjectSimpleWaterProgram.mFeatures.calculatesLighting = true;
 		gObjectSimpleWaterProgram.mFeatures.calculatesAtmospherics = true;
@@ -2135,6 +2182,85 @@ BOOL LLViewerShaderMgr::loadShadersInterface()
 		success = gHighlightProgram.createShader(NULL, NULL);
 	}
 
+	if (success)
+	{
+		gUIProgram.mName = "UI Shader";
+		gUIProgram.mShaderFiles.clear();
+		gUIProgram.mShaderFiles.push_back(make_pair("interface/uiV.glsl", GL_VERTEX_SHADER_ARB));
+		gUIProgram.mShaderFiles.push_back(make_pair("interface/uiF.glsl", GL_FRAGMENT_SHADER_ARB));
+		gUIProgram.mShaderLevel = mVertexShaderLevel[SHADER_INTERFACE];
+		success = gUIProgram.createShader(NULL, NULL);
+	}
+
+	if (success)
+	{
+		gCustomAlphaProgram.mName = "Custom Alpha Shader";
+		gCustomAlphaProgram.mShaderFiles.clear();
+		gCustomAlphaProgram.mShaderFiles.push_back(make_pair("interface/customalphaV.glsl", GL_VERTEX_SHADER_ARB));
+		gCustomAlphaProgram.mShaderFiles.push_back(make_pair("interface/customalphaF.glsl", GL_FRAGMENT_SHADER_ARB));
+		gCustomAlphaProgram.mShaderLevel = mVertexShaderLevel[SHADER_INTERFACE];
+		success = gCustomAlphaProgram.createShader(NULL, NULL);
+	}
+
+	if (success)
+	{
+		gGlowCombineProgram.mName = "Glow Combine Shader";
+		gGlowCombineProgram.mShaderFiles.clear();
+		gGlowCombineProgram.mShaderFiles.push_back(make_pair("interface/glowcombineV.glsl", GL_VERTEX_SHADER_ARB));
+		gGlowCombineProgram.mShaderFiles.push_back(make_pair("interface/glowcombineF.glsl", GL_FRAGMENT_SHADER_ARB));
+		gGlowCombineProgram.mShaderLevel = mVertexShaderLevel[SHADER_INTERFACE];
+		success = gGlowCombineProgram.createShader(NULL, NULL);
+		if (success)
+		{
+			gGlowCombineProgram.bind();
+			gGlowCombineProgram.uniform1i("glowMap", 0);
+			gGlowCombineProgram.uniform1i("screenMap", 1);
+			gGlowCombineProgram.unbind();
+		}
+	}
+
+	if (success)
+	{
+		gTwoTextureAddProgram.mName = "Two Texture Add Shader";
+		gTwoTextureAddProgram.mShaderFiles.clear();
+		gTwoTextureAddProgram.mShaderFiles.push_back(make_pair("interface/twotextureaddV.glsl", GL_VERTEX_SHADER_ARB));
+		gTwoTextureAddProgram.mShaderFiles.push_back(make_pair("interface/twotextureaddF.glsl", GL_FRAGMENT_SHADER_ARB));
+		gTwoTextureAddProgram.mShaderLevel = mVertexShaderLevel[SHADER_INTERFACE];
+		success = gTwoTextureAddProgram.createShader(NULL, NULL);
+		if (success)
+		{
+			gTwoTextureAddProgram.bind();
+			gTwoTextureAddProgram.uniform1i("tex0", 0);
+			gTwoTextureAddProgram.uniform1i("tex1", 1);
+		}
+	}
+
+	if (success)
+	{
+		gSolidColorProgram.mName = "Solid Color Shader";
+		gSolidColorProgram.mShaderFiles.clear();
+		gSolidColorProgram.mShaderFiles.push_back(make_pair("interface/solidcolorV.glsl", GL_VERTEX_SHADER_ARB));
+		gSolidColorProgram.mShaderFiles.push_back(make_pair("interface/solidcolorF.glsl", GL_FRAGMENT_SHADER_ARB));
+		gSolidColorProgram.mShaderLevel = mVertexShaderLevel[SHADER_INTERFACE];
+		success = gSolidColorProgram.createShader(NULL, NULL);
+		if (success)
+		{
+			gSolidColorProgram.bind();
+			gSolidColorProgram.uniform1i("tex0", 0);
+			gSolidColorProgram.unbind();
+		}
+	}
+
+	if (success)
+	{
+		gOcclusionProgram.mName = "Occlusion Shader";
+		gOcclusionProgram.mShaderFiles.clear();
+		gOcclusionProgram.mShaderFiles.push_back(make_pair("interface/occlusionV.glsl", GL_VERTEX_SHADER_ARB));
+		gOcclusionProgram.mShaderFiles.push_back(make_pair("interface/occlusionF.glsl", GL_FRAGMENT_SHADER_ARB));
+		gOcclusionProgram.mShaderLevel = mVertexShaderLevel[SHADER_INTERFACE];
+		success = gOcclusionProgram.createShader(NULL, NULL);
+	}
+
 	if( !success )
 	{
 		mVertexShaderLevel[SHADER_INTERFACE] = 0;
diff --git a/indra/newview/llviewershadermgr.h b/indra/newview/llviewershadermgr.h
index efef9ec5b2..6b22e83a9f 100644
--- a/indra/newview/llviewershadermgr.h
+++ b/indra/newview/llviewershadermgr.h
@@ -287,6 +287,18 @@ inline bool operator != (LLViewerShaderMgr::shader_iter const & a, LLViewerShade
 
 extern LLVector4			gShinyOrigin;
 
+//utility shaders
+extern LLGLSLShader			gOcclusionProgram;
+extern LLGLSLShader			gUIProgram;
+extern LLGLSLShader			gCustomAlphaProgram;
+extern LLGLSLShader			gGlowCombineProgram;
+
+//output tex0[tc0] + tex1[tc1]
+extern LLGLSLShader			gTwoTextureAddProgram;
+								
+//output vec4(color.rgb,color.a*tex0[tc0].a)
+extern LLGLSLShader			gSolidColorProgram;
+
 //object shaders
 extern LLGLSLShader			gObjectSimpleProgram;
 extern LLGLSLShader			gObjectSimpleWaterProgram;
@@ -296,6 +308,7 @@ extern LLGLSLShader			gObjectFullbrightProgram;
 extern LLGLSLShader			gObjectFullbrightWaterProgram;
 extern LLGLSLShader			gObjectFullbrightNonIndexedProgram;
 extern LLGLSLShader			gObjectFullbrightNonIndexedWaterProgram;
+extern LLGLSLShader			gObjectBumpProgram;
 
 extern LLGLSLShader			gObjectSimpleLODProgram;
 extern LLGLSLShader			gObjectFullbrightLODProgram;
diff --git a/indra/newview/llviewertexture.cpp b/indra/newview/llviewertexture.cpp
index 4da0f80a00..5fcc57bc91 100644
--- a/indra/newview/llviewertexture.cpp
+++ b/indra/newview/llviewertexture.cpp
@@ -599,7 +599,7 @@ bool LLViewerTexture::bindDefaultImage(S32 stage)
 	}
 	if (!res && LLViewerTexture::sNullImagep.notNull() && (this != LLViewerTexture::sNullImagep))
 	{
-		res = gGL.getTexUnit(stage)->bind(LLViewerTexture::sNullImagep) ;
+		res = gGL.getTexUnit(stage)->bind(LLViewerTexture::sNullImagep);
 	}
 	if (!res)
 	{
diff --git a/indra/newview/llviewertexturelist.cpp b/indra/newview/llviewertexturelist.cpp
index d24174adea..30ef8b8a29 100644
--- a/indra/newview/llviewertexturelist.cpp
+++ b/indra/newview/llviewertexturelist.cpp
@@ -115,7 +115,7 @@ void LLViewerTextureList::doPreloadImages()
 	
 	// Set the "white" image
 	LLViewerFetchedTexture::sWhiteImagep = LLViewerTextureManager::getFetchedTextureFromFile("white.tga", MIPMAP_NO, LLViewerFetchedTexture::BOOST_UI);
-	
+	LLTexUnit::sWhiteTexture = LLViewerFetchedTexture::sWhiteImagep->getTexName();
 	LLUIImageList* image_list = LLUIImageList::getInstance();
 
 	image_list->initFromFile();
diff --git a/indra/newview/llviewerwindow.cpp b/indra/newview/llviewerwindow.cpp
index cff166b825..1e056898d5 100644
--- a/indra/newview/llviewerwindow.cpp
+++ b/indra/newview/llviewerwindow.cpp
@@ -2296,6 +2296,11 @@ void LLViewerWindow::draw()
 	// Draw all nested UI views.
 	// No translation needed, this view is glued to 0,0
 
+	if (LLGLSLShader::sNoFixedFunction)
+	{
+		gUIProgram.bind();
+	}
+
 	gGL.pushMatrix();
 	LLUI::pushMatrix();
 	{
@@ -2370,6 +2375,11 @@ void LLViewerWindow::draw()
 	LLUI::popMatrix();
 	gGL.popMatrix();
 
+	if (LLGLSLShader::sNoFixedFunction)
+	{
+		gUIProgram.unbind();
+	}
+
 //#if LL_DEBUG
 	LLView::sIsDrawing = FALSE;
 //#endif
diff --git a/indra/newview/llvoicevivox.cpp b/indra/newview/llvoicevivox.cpp
index cd2bbad620..9dc6b5194e 100644
--- a/indra/newview/llvoicevivox.cpp
+++ b/indra/newview/llvoicevivox.cpp
@@ -7049,6 +7049,8 @@ LLVivoxProtocolParser::~LLVivoxProtocolParser()
 		XML_ParserFree(parser);
 }
 
+//static LLFastTimer::DeclareTimer FTM_VIVOX_PROCESS("Vivox Process");
+
 // virtual
 LLIOPipe::EStatus LLVivoxProtocolParser::process_impl(
 													  const LLChannelDescriptors& channels,
@@ -7057,6 +7059,7 @@ LLIOPipe::EStatus LLVivoxProtocolParser::process_impl(
 													  LLSD& context,
 													  LLPumpIO* pump)
 {
+	//LLFastTimer t(FTM_VIVOX_PROCESS);
 	LLBufferStream istr(channels, buffer.get());
 	std::ostringstream ostr;
 	while (istr.good())
diff --git a/indra/newview/llvotree.cpp b/indra/newview/llvotree.cpp
index 3c7fe708e6..890861df71 100644
--- a/indra/newview/llvotree.cpp
+++ b/indra/newview/llvotree.cpp
@@ -51,6 +51,7 @@
 #include "llspatialpartition.h"
 #include "llnotificationsutil.h"
 #include "raytrace.h"
+#include "llglslshader.h"
 
 extern LLPipeline gPipeline;
 
diff --git a/indra/newview/pipeline.cpp b/indra/newview/pipeline.cpp
index e74bf2a620..8372c2430b 100644
--- a/indra/newview/pipeline.cpp
+++ b/indra/newview/pipeline.cpp
@@ -1983,6 +1983,14 @@ void LLPipeline::updateCull(LLCamera& camera, LLCullResult& result, S32 water_cl
 
 	LLGLDepthTest depth(GL_TRUE, GL_FALSE);
 
+	bool bound_shader = false;
+	if (gPipeline.canUseVertexShaders() && LLGLSLShader::sCurBoundShader == 0)
+	{ //if no shader is currently bound, use the occlusion shader instead of fixed function if we can
+		// (shadow render uses a special shader that clamps to clip planes)
+		bound_shader = true;
+		gOcclusionProgram.bind();
+	}
+	
 	for (LLWorld::region_list_t::const_iterator iter = LLWorld::getInstance()->getRegionList().begin(); 
 			iter != LLWorld::getInstance()->getRegionList().end(); ++iter)
 	{
@@ -2010,6 +2018,11 @@ void LLPipeline::updateCull(LLCamera& camera, LLCullResult& result, S32 water_cl
 		}
 	}
 
+	if (bound_shader)
+	{
+		gOcclusionProgram.unbind();
+	}
+
 	camera.disableUserClipPlane();
 
 	if (hasRenderType(LLPipeline::RENDER_TYPE_SKY) && 
@@ -2133,7 +2146,12 @@ void LLPipeline::doOcclusion(LLCamera& camera)
 		LLGLDepthTest depth(GL_TRUE, GL_FALSE);
 
 		LLGLDisable cull(GL_CULL_FACE);
-		
+
+		if (canUseVertexShaders())
+		{
+			gOcclusionProgram.bind();
+		}
+
 		for (LLCullResult::sg_list_t::iterator iter = sCull->beginOcclusionGroups(); iter != sCull->endOcclusionGroups(); ++iter)
 		{
 			LLSpatialGroup* group = *iter;
@@ -2141,6 +2159,11 @@ void LLPipeline::doOcclusion(LLCamera& camera)
 			group->clearOcclusionState(LLSpatialGroup::ACTIVE_OCCLUSION);
 		}
 	
+		if (canUseVertexShaders())
+		{
+			gOcclusionProgram.unbind();
+		}
+
 		gGL.setColorMask(true, false);
 	}
 }
@@ -3249,6 +3272,11 @@ void render_hud_elements()
 	gGL.color4f(1,1,1,1);
 	if (!LLPipeline::sReflectionRender && gPipeline.hasRenderDebugFeatureMask(LLPipeline::RENDER_DEBUG_FEATURE_UI))
 	{
+		if (LLGLSLShader::sNoFixedFunction)
+		{
+			gUIProgram.bind();
+		}
+
 		LLGLEnable multisample(gSavedSettings.getU32("RenderFSAASamples") > 0 ? GL_MULTISAMPLE_ARB : 0);
 		gViewerWindow->renderSelections(FALSE, FALSE, FALSE); // For HUD version in render_ui_3d()
 	
@@ -3262,6 +3290,10 @@ void render_hud_elements()
 	
 		// Render name tags.
 		LLHUDObject::renderAll();
+		if (LLGLSLShader::sNoFixedFunction)
+		{
+			gUIProgram.unbind();
+		}
 	}
 	else if (gForceRenderLandFence)
 	{
@@ -3599,8 +3631,8 @@ void LLPipeline::renderGeom(LLCamera& camera, BOOL forceVBOUpdate)
 						check_stack_depth(stack_depth);
 						std::string msg = llformat("pass %d", i);
 						LLGLState::checkStates(msg);
-						LLGLState::checkTextureChannels(msg);
-						LLGLState::checkClientArrays(msg);
+						//LLGLState::checkTextureChannels(msg);
+						//LLGLState::checkClientArrays(msg);
 					}
 				}
 			}
@@ -3638,16 +3670,8 @@ void LLPipeline::renderGeom(LLCamera& camera, BOOL forceVBOUpdate)
 
 	LLVertexBuffer::unbind();
 	LLGLState::checkStates();
-	LLGLState::checkTextureChannels();
-	LLGLState::checkClientArrays();
-
-	
-
-	stop_glerror();
-		
-	LLGLState::checkStates();
-	LLGLState::checkTextureChannels();
-	LLGLState::checkClientArrays();
+	//LLGLState::checkTextureChannels();
+	//LLGLState::checkClientArrays();
 
 	LLAppViewer::instance()->pingMainloopTimeout("Pipeline:RenderHighlights");
 
@@ -3701,8 +3725,8 @@ void LLPipeline::renderGeom(LLCamera& camera, BOOL forceVBOUpdate)
 	LLVertexBuffer::unbind();
 
 	LLGLState::checkStates();
-	LLGLState::checkTextureChannels();
-	LLGLState::checkClientArrays();
+//	LLGLState::checkTextureChannels();
+//	LLGLState::checkClientArrays();
 }
 
 void LLPipeline::renderGeomDeferred(LLCamera& camera)
@@ -6449,30 +6473,39 @@ void LLPipeline::renderBloom(BOOL for_snapshot, F32 zoom_factor, int subfield)
 
 		LLGLDisable blend(GL_BLEND);
 
-		//tex unit 0
-		gGL.getTexUnit(0)->setTextureColorBlend(LLTexUnit::TBO_REPLACE, LLTexUnit::TBS_TEX_COLOR);
-	
-		gGL.getTexUnit(0)->bind(&mGlow[1]);
-		gGL.getTexUnit(1)->activate();
-		gGL.getTexUnit(1)->enable(LLTexUnit::TT_RECT_TEXTURE);
-
-
-		//tex unit 1
-		gGL.getTexUnit(1)->setTextureColorBlend(LLTexUnit::TBO_ADD, LLTexUnit::TBS_TEX_COLOR, LLTexUnit::TBS_PREV_COLOR);
+		if (LLGLSLShader::sNoFixedFunction)
+		{
+			gGlowCombineProgram.bind();
+		}
+		else
+		{
+			//tex unit 0
+			gGL.getTexUnit(0)->setTextureColorBlend(LLTexUnit::TBO_REPLACE, LLTexUnit::TBS_TEX_COLOR);
+			//tex unit 1
+			gGL.getTexUnit(1)->setTextureColorBlend(LLTexUnit::TBO_ADD, LLTexUnit::TBS_TEX_COLOR, LLTexUnit::TBS_PREV_COLOR);
+		}
 		
+		gGL.getTexUnit(0)->bind(&mGlow[1]);
 		gGL.getTexUnit(1)->bind(&mScreen);
-		gGL.getTexUnit(1)->activate();
 		
 		LLGLEnable multisample(gSavedSettings.getU32("RenderFSAASamples") > 0 ? GL_MULTISAMPLE_ARB : 0);
 		
 		buff->setBuffer(mask);
 		buff->drawArrays(LLRender::TRIANGLE_STRIP, 0, 3);
 		
-		gGL.getTexUnit(1)->disable();
-		gGL.getTexUnit(1)->setTextureBlendType(LLTexUnit::TB_MULT);
+		if (LLGLSLShader::sNoFixedFunction)
+		{
+			gGlowCombineProgram.unbind();
+		}
+		else
+		{
+			gGL.getTexUnit(1)->disable();
+			gGL.getTexUnit(1)->setTextureBlendType(LLTexUnit::TB_MULT);
 
-		gGL.getTexUnit(0)->activate();
-		gGL.getTexUnit(0)->setTextureBlendType(LLTexUnit::TB_MULT);
+			gGL.getTexUnit(0)->activate();
+			gGL.getTexUnit(0)->setTextureBlendType(LLTexUnit::TB_MULT);
+		}
+		
 	}
 
 	if (LLRenderTarget::sUseFBO)
@@ -6485,6 +6518,11 @@ void LLPipeline::renderBloom(BOOL for_snapshot, F32 zoom_factor, int subfield)
 
 	if (hasRenderDebugMask(LLPipeline::RENDER_DEBUG_PHYSICS_SHAPES))
 	{
+		if (LLGLSLShader::sNoFixedFunction)
+		{
+			gUIProgram.bind();
+		}
+
 		gGL.setColorMask(true, false);
 
 		LLVector2 tc1(0,0);
@@ -6508,6 +6546,12 @@ void LLPipeline::renderBloom(BOOL for_snapshot, F32 zoom_factor, int subfield)
 		
 		gGL.end();
 		gGL.flush();
+
+		if (LLGLSLShader::sNoFixedFunction)
+		{
+			gUIProgram.unbind();
+		}
+
 	}
 
 	glMatrixMode(GL_PROJECTION);
@@ -8063,8 +8107,8 @@ void LLPipeline::generateWaterReflection(LLCamera& camera_in)
 		LLViewerCamera::getInstance()->setUserClipPlane(npnorm);
 		
 		LLGLState::checkStates();
-		LLGLState::checkTextureChannels();
-		LLGLState::checkClientArrays();
+		//LLGLState::checkTextureChannels();
+		//LLGLState::checkClientArrays();
 
 		if (!skip_avatar_update)
 		{
@@ -8197,6 +8241,10 @@ void LLPipeline::renderShadow(glh::matrix4f& view, glh::matrix4f& proj, LLCamera
 	LLVertexBuffer::unbind();
 
 	{
+		if (!use_shader)
+		{ //occlusion program is general purpose depth-only no-textures
+			gOcclusionProgram.bind();
+		}
 		LLFastTimer ftm(FTM_SHADOW_SIMPLE);
 		LLGLDisable test(GL_ALPHA_TEST);
 		gGL.getTexUnit(0)->disable();
@@ -8205,6 +8253,10 @@ void LLPipeline::renderShadow(glh::matrix4f& view, glh::matrix4f& proj, LLCamera
 			renderObjects(types[i], LLVertexBuffer::MAP_VERTEX, FALSE);
 		}
 		gGL.getTexUnit(0)->enable(LLTexUnit::TT_TEXTURE);
+		if (!use_shader)
+		{
+			gOcclusionProgram.unbind();
+		}
 	}
 	
 	if (use_shader)