Merged in euclid-pre-16386 (pull request #793)

Purge LLGLSLShader::sNoFixedFunction, and all that flows from it. No functional changes.

Approved-by: Michael Pohoreski
Approved-by: Dave Parks

50 files changed, 463 insertions, 2049 deletions

diff --git a/indra/llappearance/lltexlayer.cpp b/indra/llappearance/lltexlayer.cpp
index 26e0ae9086..de10560b22 100644
--- a/indra/llappearance/lltexlayer.cpp
+++ b/indra/llappearance/lltexlayer.cpp
@@ -144,17 +144,8 @@ BOOL LLTexLayerSetBuffer::renderTexLayerSet(LLRenderTarget* bound_target)
 
 	BOOL success = TRUE;
 	
-	bool use_shaders = LLGLSLShader::sNoFixedFunction;
-
-	if (use_shaders)
-	{
-		gAlphaMaskProgram.bind();
-		gAlphaMaskProgram.setMinimumAlpha(0.004f);
-	}
-	else
-	{
-		gGL.setAlphaRejectSettings(LLRender::CF_GREATER, 0.00f);
-	}
+	gAlphaMaskProgram.bind();
+	gAlphaMaskProgram.setMinimumAlpha(0.004f);
 
 	LLVertexBuffer::unbind();
 
@@ -166,10 +157,7 @@ BOOL LLTexLayerSetBuffer::renderTexLayerSet(LLRenderTarget* bound_target)
 
 	midRenderTexLayerSet(success);
 
-	if (use_shaders)
-	{
-		gAlphaMaskProgram.unbind();
-	}
+	gAlphaMaskProgram.unbind();
 
 	LLVertexBuffer::unbind();
 	
@@ -392,8 +380,6 @@ BOOL LLTexLayerSet::render( S32 x, S32 y, S32 width, S32 height, LLRenderTarget*
 		}
 	}
 
-	bool use_shaders = LLGLSLShader::sNoFixedFunction;
-
 	LLGLSUIDefault gls_ui;
 	LLGLDepthTest gls_depth(GL_FALSE, GL_FALSE);
 	gGL.setColorMask(true, true);
@@ -402,20 +388,14 @@ BOOL LLTexLayerSet::render( S32 x, S32 y, S32 width, S32 height, LLRenderTarget*
 	{
 		gGL.flush();
 		LLGLDisable no_alpha(GL_ALPHA_TEST);
-		if (use_shaders)
-		{
-			gAlphaMaskProgram.setMinimumAlpha(0.0f);
-		}
+		gAlphaMaskProgram.setMinimumAlpha(0.0f);
 		gGL.getTexUnit(0)->unbind(LLTexUnit::TT_TEXTURE);
 		gGL.color4f( 0.f, 0.f, 0.f, 1.f );
 
 		gl_rect_2d_simple( width, height );
 
 		gGL.flush();
-		if (use_shaders)
-		{
-			gAlphaMaskProgram.setMinimumAlpha(0.004f);
-		}
+		gAlphaMaskProgram.setMinimumAlpha(0.004f);
 	}
 
 	if (mIsVisible)
@@ -442,10 +422,7 @@ BOOL LLTexLayerSet::render( S32 x, S32 y, S32 width, S32 height, LLRenderTarget*
 
 		gGL.setSceneBlendType(LLRender::BT_REPLACE);
 		LLGLDisable no_alpha(GL_ALPHA_TEST);
-		if (use_shaders)
-		{
-			gAlphaMaskProgram.setMinimumAlpha(0.f);
-		}
+		gAlphaMaskProgram.setMinimumAlpha(0.f);
 
 		gGL.getTexUnit(0)->unbind(LLTexUnit::TT_TEXTURE);
 		gGL.color4f( 0.f, 0.f, 0.f, 0.f );
@@ -454,10 +431,7 @@ BOOL LLTexLayerSet::render( S32 x, S32 y, S32 width, S32 height, LLRenderTarget*
 		gGL.setSceneBlendType(LLRender::BT_ALPHA);
 
 		gGL.flush();
-		if (use_shaders)
-		{
-			gAlphaMaskProgram.setMinimumAlpha(0.004f);
-		}
+		gAlphaMaskProgram.setMinimumAlpha(0.004f);
 	}
 
 	return success;
@@ -542,8 +516,6 @@ void LLTexLayerSet::renderAlphaMaskTextures(S32 x, S32 y, S32 width, S32 height,
     LL_PROFILE_ZONE_SCOPED;
 	const LLTexLayerSetInfo *info = getInfo();
 	
-	bool use_shaders = LLGLSLShader::sNoFixedFunction;
-
 	gGL.setColorMask(false, true);
 	gGL.setSceneBlendType(LLRender::BT_REPLACE);
 	
@@ -557,7 +529,6 @@ void LLTexLayerSet::renderAlphaMaskTextures(S32 x, S32 y, S32 width, S32 height,
 			{
 				LLGLSUIDefault gls_ui;
 				gGL.getTexUnit(0)->bind(tex);
-				gGL.getTexUnit(0)->setTextureBlendType( LLTexUnit::TB_REPLACE );
 				gl_rect_2d_simple_tex( width, height );
 			}
 		}
@@ -568,20 +539,14 @@ void LLTexLayerSet::renderAlphaMaskTextures(S32 x, S32 y, S32 width, S32 height,
 		// Set the alpha channel to one (clean up after previous blending)
 		gGL.flush();
 		LLGLDisable no_alpha(GL_ALPHA_TEST);
-		if (use_shaders)
-		{
-			gAlphaMaskProgram.setMinimumAlpha(0.f);
-		}
+		gAlphaMaskProgram.setMinimumAlpha(0.f);
 		gGL.getTexUnit(0)->unbind(LLTexUnit::TT_TEXTURE);
 		gGL.color4f( 0.f, 0.f, 0.f, 1.f );
 		
 		gl_rect_2d_simple( width, height );
 		
 		gGL.flush();
-		if (use_shaders)
-		{
-			gAlphaMaskProgram.setMinimumAlpha(0.004f);
-		}
+		gAlphaMaskProgram.setMinimumAlpha(0.004f);
 	}
 	
 	// (Optional) Mask out part of the baked texture with alpha masks
@@ -589,7 +554,6 @@ void LLTexLayerSet::renderAlphaMaskTextures(S32 x, S32 y, S32 width, S32 height,
 	if (mMaskLayerList.size() > 0)
 	{
 		gGL.setSceneBlendType(LLRender::BT_MULT_ALPHA);
-		gGL.getTexUnit(0)->setTextureBlendType( LLTexUnit::TB_REPLACE );
 		for (layer_list_t::iterator iter = mMaskLayerList.begin(); iter != mMaskLayerList.end(); iter++)
 		{
 			LLTexLayerInterface* layer = *iter;
@@ -602,7 +566,6 @@ void LLTexLayerSet::renderAlphaMaskTextures(S32 x, S32 y, S32 width, S32 height,
 	
 	gGL.getTexUnit(0)->unbind(LLTexUnit::TT_TEXTURE);
 	
-	gGL.getTexUnit(0)->setTextureBlendType(LLTexUnit::TB_MULT);
 	gGL.setColorMask(true, true);
 	gGL.setSceneBlendType(LLRender::BT_ALPHA);
 }
@@ -1128,13 +1091,6 @@ BOOL LLTexLayer::render(S32 x, S32 y, S32 width, S32 height, LLRenderTarget* bou
 	// *TODO: Is this correct?
 	//gPipeline.disableLights();
 	stop_glerror();
-	if (!LLGLSLShader::sNoFixedFunction)
-	{
-		glDisable(GL_LIGHTING);
-	}
-	stop_glerror();
-
-	bool use_shaders = LLGLSLShader::sNoFixedFunction;
 
 	LLColor4 net_color;
 	BOOL color_specified = findNetColor(&net_color);
@@ -1221,10 +1177,7 @@ BOOL LLTexLayer::render(S32 x, S32 y, S32 width, S32 height, LLRenderTarget* bou
 					LLGLDisable alpha_test(no_alpha_test ? GL_ALPHA_TEST : 0);
 					if (no_alpha_test)
 					{
-						if (use_shaders)
-						{
-							gAlphaMaskProgram.setMinimumAlpha(0.f);
-						}
+						gAlphaMaskProgram.setMinimumAlpha(0.f);
 					}
 					
 					LLTexUnit::eTextureAddressMode old_mode = tex->getAddressMode();
@@ -1238,10 +1191,7 @@ BOOL LLTexLayer::render(S32 x, S32 y, S32 width, S32 height, LLRenderTarget* bou
 					gGL.getTexUnit(0)->unbind(LLTexUnit::TT_TEXTURE);
 					if (no_alpha_test)
 					{
-						if (use_shaders)
-						{
-							gAlphaMaskProgram.setMinimumAlpha(0.004f);
-						}
+						gAlphaMaskProgram.setMinimumAlpha(0.004f);
 					}
 				}
 			}
@@ -1275,18 +1225,12 @@ BOOL LLTexLayer::render(S32 x, S32 y, S32 width, S32 height, LLRenderTarget* bou
 		color_specified )
 	{
 		LLGLDisable no_alpha(GL_ALPHA_TEST);
-		if (use_shaders)
-		{
-			gAlphaMaskProgram.setMinimumAlpha(0.000f);
-		}
+		gAlphaMaskProgram.setMinimumAlpha(0.000f);
 
 		gGL.getTexUnit(0)->unbind(LLTexUnit::TT_TEXTURE);
 		gGL.color4fv( net_color.mV );
 		gl_rect_2d_simple( width, height );
-		if (use_shaders)
-		{
-			gAlphaMaskProgram.setMinimumAlpha(0.004f);
-		}
+		gAlphaMaskProgram.setMinimumAlpha(0.004f);
 	}
 
 	if( alpha_mask_specified || getInfo()->mWriteAllChannels )
@@ -1374,25 +1318,17 @@ BOOL LLTexLayer::blendAlphaTexture(S32 x, S32 y, S32 width, S32 height)
 
 	gGL.flush();
 	
-	bool use_shaders = LLGLSLShader::sNoFixedFunction;
-
 	if( !getInfo()->mStaticImageFileName.empty() )
 	{
 		LLGLTexture* tex = LLTexLayerStaticImageList::getInstance()->getTexture( getInfo()->mStaticImageFileName, getInfo()->mStaticImageIsMask );
 		if( tex )
 		{
 			LLGLSNoAlphaTest gls_no_alpha_test;
-			if (use_shaders)
-			{
-				gAlphaMaskProgram.setMinimumAlpha(0.f);
-			}
+			gAlphaMaskProgram.setMinimumAlpha(0.f);
 			gGL.getTexUnit(0)->bind(tex, TRUE);
 			gl_rect_2d_simple_tex( width, height );
 			gGL.getTexUnit(0)->unbind(LLTexUnit::TT_TEXTURE);
-			if (use_shaders)
-			{
-				gAlphaMaskProgram.setMinimumAlpha(0.004f);
-			}
+			gAlphaMaskProgram.setMinimumAlpha(0.004f);
 		}
 		else
 		{
@@ -1407,18 +1343,11 @@ BOOL LLTexLayer::blendAlphaTexture(S32 x, S32 y, S32 width, S32 height)
 			if (tex)
 			{
 				LLGLSNoAlphaTest gls_no_alpha_test;
-				if (use_shaders)
-				{
-					gAlphaMaskProgram.setMinimumAlpha(0.f);
-				}
+				gAlphaMaskProgram.setMinimumAlpha(0.f);
 				gGL.getTexUnit(0)->bind(tex);
 				gl_rect_2d_simple_tex( width, height );
 				gGL.getTexUnit(0)->unbind(LLTexUnit::TT_TEXTURE);
-				success = TRUE;
-				if (use_shaders)
-				{
-					gAlphaMaskProgram.setMinimumAlpha(0.004f);
-				}
+				gAlphaMaskProgram.setMinimumAlpha(0.004f);
 			}
 		}
 	}
@@ -1443,13 +1372,7 @@ void LLTexLayer::renderMorphMasks(S32 x, S32 y, S32 width, S32 height, const LLC
 
 	llassert( !mParamAlphaList.empty() );
 
-	bool use_shaders = LLGLSLShader::sNoFixedFunction;
-
-	if (use_shaders)
-	{
-		gAlphaMaskProgram.setMinimumAlpha(0.f);
-	}
-
+	gAlphaMaskProgram.setMinimumAlpha(0.f);
 	gGL.setColorMask(false, true);
 
 	LLTexLayerParamAlpha* first_param = *mParamAlphaList.begin();
@@ -1534,10 +1457,7 @@ void LLTexLayer::renderMorphMasks(S32 x, S32 y, S32 width, S32 height, const LLC
 		gl_rect_2d_simple( width, height );
 	}
 
-	if (use_shaders)
-	{
-		gAlphaMaskProgram.setMinimumAlpha(0.004f);
-	}
+	gAlphaMaskProgram.setMinimumAlpha(0.004f);
 
 	LLGLSUIDefault gls_ui;
 
diff --git a/indra/llrender/llcubemap.cpp b/indra/llrender/llcubemap.cpp
index d7f7b2f58e..834084674e 100644
--- a/indra/llrender/llcubemap.cpp
+++ b/indra/llrender/llcubemap.cpp
@@ -47,7 +47,6 @@ bool LLCubeMap::sUseCubeMaps = true;
 
 LLCubeMap::LLCubeMap(bool init_as_srgb)
 	: mTextureStage(0),
-	  mTextureCoordStage(0),
 	  mMatrixStage(0),
 	  mIssRGB(init_as_srgb)
 {
@@ -180,7 +179,6 @@ void LLCubeMap::bind()
 void LLCubeMap::enable(S32 stage)
 {
 	enableTexture(stage);
-	enableTextureCoords(stage);
 }
 
 void LLCubeMap::enableTexture(S32 stage)
@@ -192,35 +190,9 @@ void LLCubeMap::enableTexture(S32 stage)
 	}
 }
 
-void LLCubeMap::enableTextureCoords(S32 stage)
-{
-	mTextureCoordStage = stage;
-	if (!LLGLSLShader::sNoFixedFunction && gGLManager.mHasCubeMap && stage >= 0 && LLCubeMap::sUseCubeMaps)
-	{
-		if (stage > 0)
-		{
-			gGL.getTexUnit(stage)->activate();
-		}
-		
-		glEnable(GL_TEXTURE_GEN_R);
-		glEnable(GL_TEXTURE_GEN_S);
-		glEnable(GL_TEXTURE_GEN_T);
-
-		glTexGeni(GL_S, GL_TEXTURE_GEN_MODE, GL_REFLECTION_MAP);
-		glTexGeni(GL_T, GL_TEXTURE_GEN_MODE, GL_REFLECTION_MAP);
-		glTexGeni(GL_R, GL_TEXTURE_GEN_MODE, GL_REFLECTION_MAP);
-		
-		if (stage > 0)
-		{
-			gGL.getTexUnit(0)->activate();
-		}
-	}
-}
-
 void LLCubeMap::disable(void)
 {
 	disableTexture();
-	disableTextureCoords();
 }
 
 void LLCubeMap::disableTexture(void)
@@ -235,24 +207,6 @@ void LLCubeMap::disableTexture(void)
 	}
 }
 
-void LLCubeMap::disableTextureCoords(void)
-{
-	if (!LLGLSLShader::sNoFixedFunction && gGLManager.mHasCubeMap && mTextureCoordStage >= 0 && LLCubeMap::sUseCubeMaps)
-	{
-		if (mTextureCoordStage > 0)
-		{
-			gGL.getTexUnit(mTextureCoordStage)->activate();
-		}
-		glDisable(GL_TEXTURE_GEN_S);
-		glDisable(GL_TEXTURE_GEN_T);
-		glDisable(GL_TEXTURE_GEN_R);
-		if (mTextureCoordStage > 0)
-		{
-			gGL.getTexUnit(0)->activate();
-		}
-	}
-}
-
 void LLCubeMap::setMatrix(S32 stage)
 {
 	mMatrixStage = stage;
diff --git a/indra/llrender/llcubemap.h b/indra/llrender/llcubemap.h
index 95b6d12099..a01636d8d4 100644
--- a/indra/llrender/llcubemap.h
+++ b/indra/llrender/llcubemap.h
@@ -48,12 +48,10 @@ public:
 	void enable(S32 stage);
 	
 	void enableTexture(S32 stage);
-	void enableTextureCoords(S32 stage);
 	S32	 getStage(void) { return mTextureStage; }
 	
 	void disable(void);
 	void disableTexture(void);
-	void disableTextureCoords(void);
 	void setMatrix(S32 stage);
 	void restoreMatrix();
 	void setReflection (void);
@@ -80,7 +78,6 @@ protected:
 	LLPointer<LLImageGL> mImages[6];
 	LLPointer<LLImageRaw> mRawImages[6];
 	S32 mTextureStage;
-	S32 mTextureCoordStage;
 	S32 mMatrixStage;
 };
 
diff --git a/indra/llrender/llgl.cpp b/indra/llrender/llgl.cpp
index b49b14615f..58183adfce 100644
--- a/indra/llrender/llgl.cpp
+++ b/indra/llrender/llgl.cpp
@@ -1936,207 +1936,30 @@ void LLGLState::checkTextureChannels(const std::string& msg)
 #endif
 }
 
-void LLGLState::checkClientArrays(const std::string& msg, U32 data_mask)
-{
-	if (!gDebugGL || LLGLSLShader::sNoFixedFunction)
-	{
-		return;
-	}
-
-	stop_glerror();
-	BOOL error = FALSE;
-
-	GLint active_texture;
-	glGetIntegerv(GL_CLIENT_ACTIVE_TEXTURE_ARB, &active_texture);
-
-	if (active_texture != GL_TEXTURE0_ARB)
-	{
-		LL_WARNS() << "Client active texture corrupted: " << active_texture << LL_ENDL;
-		if (gDebugSession)
-		{
-			gFailLog << "Client active texture corrupted: " << active_texture << std::endl;
-		}
-		error = TRUE;
-	}
-
-	/*glGetIntegerv(GL_ACTIVE_TEXTURE_ARB, &active_texture);
-	if (active_texture != GL_TEXTURE0_ARB)
-	{
-		LL_WARNS() << "Active texture corrupted: " << active_texture << LL_ENDL;
-		if (gDebugSession)
-		{
-			gFailLog << "Active texture corrupted: " << active_texture << std::endl;
-		}
-		error = TRUE;
-	}*/
-
-	static const char* label[] =
-	{
-		"GL_VERTEX_ARRAY",
-		"GL_NORMAL_ARRAY",
-		"GL_COLOR_ARRAY",
-		"GL_TEXTURE_COORD_ARRAY"
-	};
-
-	static GLint value[] =
-	{
-		GL_VERTEX_ARRAY,
-		GL_NORMAL_ARRAY,
-		GL_COLOR_ARRAY,
-		GL_TEXTURE_COORD_ARRAY
-	};
-
-	static const U32 mask[] = 
-	{ //copied from llvertexbuffer.h
-		0x0001, //MAP_VERTEX,
-		0x0002, //MAP_NORMAL,
-		0x0010, //MAP_COLOR,
-		0x0004, //MAP_TEXCOORD
-	};
-
-
-	for (S32 j = 1; j < 4; j++)
-	{
-		if (glIsEnabled(value[j]))
-		{
-			if (!(mask[j] & data_mask))
-			{
-				error = TRUE;
-				LL_WARNS("RenderState") << "GL still has " << label[j] << " enabled." << LL_ENDL;
-				if (gDebugSession)
-				{
-					gFailLog << "GL still has " << label[j] << " enabled." << std::endl;
-				}
-			}
-		}
-		else
-		{
-			if (mask[j] & data_mask)
-			{
-				error = TRUE;
-				LL_WARNS("RenderState") << "GL does not have " << label[j] << " enabled." << LL_ENDL;
-				if (gDebugSession)
-				{
-					gFailLog << "GL does not have " << label[j] << " enabled." << std::endl;
-				}
-			}
-		}
-	}
-
-	glClientActiveTextureARB(GL_TEXTURE1_ARB);
-	gGL.getTexUnit(1)->activate();
-	if (glIsEnabled(GL_TEXTURE_COORD_ARRAY))
-	{
-		if (!(data_mask & 0x0008))
-		{
-			error = TRUE;
-			LL_WARNS("RenderState") << "GL still has GL_TEXTURE_COORD_ARRAY enabled on channel 1." << LL_ENDL;
-			if (gDebugSession)
-			{
-				gFailLog << "GL still has GL_TEXTURE_COORD_ARRAY enabled on channel 1." << std::endl;
-			}
-		}
-	}
-	else
-	{
-		if (data_mask & 0x0008)
-		{
-			error = TRUE;
-			LL_WARNS("RenderState") << "GL does not have GL_TEXTURE_COORD_ARRAY enabled on channel 1." << LL_ENDL;
-			if (gDebugSession)
-			{
-				gFailLog << "GL does not have GL_TEXTURE_COORD_ARRAY enabled on channel 1." << std::endl;
-			}
-		}
-	}
-
-	/*if (glIsEnabled(GL_TEXTURE_2D))
-	{
-		if (!(data_mask & 0x0008))
-		{
-			error = TRUE;
-			LL_WARNS("RenderState") << "GL still has GL_TEXTURE_2D enabled on channel 1." << LL_ENDL;
-			if (gDebugSession)
-			{
-				gFailLog << "GL still has GL_TEXTURE_2D enabled on channel 1." << std::endl;
-			}
-		}
-	}
-	else
-	{
-		if (data_mask & 0x0008)
-		{
-			error = TRUE;
-			LL_WARNS("RenderState") << "GL does not have GL_TEXTURE_2D enabled on channel 1." << LL_ENDL;
-			if (gDebugSession)
-			{
-				gFailLog << "GL does not have GL_TEXTURE_2D enabled on channel 1." << std::endl;
-			}
-		}
-	}*/
-
-	glClientActiveTextureARB(GL_TEXTURE0_ARB);
-	gGL.getTexUnit(0)->activate();
-
-	if (LLGLSLShader::sNoFixedFunction)
-	{	//make sure vertex attribs are all disabled
-		GLint count;
-		glGetIntegerv(GL_MAX_VERTEX_ATTRIBS_ARB, &count);
-		for (GLint i = 0; i < count; i++)
-		{
-			GLint enabled;
-			glGetVertexAttribivARB((GLuint) i, GL_VERTEX_ATTRIB_ARRAY_ENABLED_ARB, &enabled);
-			if (enabled)
-			{
-				error = TRUE;
-				LL_WARNS("RenderState") << "GL still has vertex attrib array " << i << " enabled." << LL_ENDL;
-				if (gDebugSession)
-				{
-					gFailLog <<  "GL still has vertex attrib array " << i << " enabled." << std::endl;
-				}
-			}
-		}
-	}
-
-	if (error)
-	{
-		if (gDebugSession)
-		{
-			ll_fail("LLGLState::checkClientArrays failed.");
-		}
-		else
-		{
-			LL_GL_ERRS << "GL client array corruption detected.  " << msg << LL_ENDL;
-		}
-	}
-}
-
 ///////////////////////////////////////////////////////////////////////
 
 LLGLState::LLGLState(LLGLenum state, S32 enabled) :
 	mState(state), mWasEnabled(FALSE), mIsEnabled(FALSE)
 {
     LL_PROFILE_ZONE_SCOPED;
-	if (LLGLSLShader::sNoFixedFunction)
-	{ //always ignore state that's deprecated post GL 3.0
-		switch (state)
-		{
-			case GL_ALPHA_TEST:
-			case GL_NORMALIZE:
-			case GL_TEXTURE_GEN_R:
-			case GL_TEXTURE_GEN_S:
-			case GL_TEXTURE_GEN_T:
-			case GL_TEXTURE_GEN_Q:
-			case GL_LIGHTING:
-			case GL_COLOR_MATERIAL:
-			case GL_FOG:
-			case GL_LINE_STIPPLE:
-			case GL_POLYGON_STIPPLE:
-				mState = 0;
-				break;
-		}
+	switch (state)
+	{
+		case GL_ALPHA_TEST:
+		case GL_NORMALIZE:
+		case GL_TEXTURE_GEN_R:
+		case GL_TEXTURE_GEN_S:
+		case GL_TEXTURE_GEN_T:
+		case GL_TEXTURE_GEN_Q:
+		case GL_LIGHTING:
+		case GL_COLOR_MATERIAL:
+		case GL_FOG:
+		case GL_LINE_STIPPLE:
+		case GL_POLYGON_STIPPLE:
+			mState = 0;
+			break;
 	}
 
+
 	stop_glerror();
 	if (mState)
 	{
@@ -2688,22 +2511,10 @@ LLGLSPipelineSkyBox::LLGLSPipelineSkyBox()
 , mCullFace(GL_CULL_FACE)
 , mSquashClip()
 { 
-    if (!LLGLSLShader::sNoFixedFunction)
-    {
-        glDisable(GL_LIGHTING);
-        glDisable(GL_FOG);
-        glDisable(GL_CLIP_PLANE0);
-    }
 }
 
 LLGLSPipelineSkyBox::~LLGLSPipelineSkyBox()
 {
-    if (!LLGLSLShader::sNoFixedFunction)
-    {
-        glEnable(GL_LIGHTING);
-        glEnable(GL_FOG);
-        glEnable(GL_CLIP_PLANE0);
-    }
 }
 
 LLGLSPipelineDepthTestSkyBox::LLGLSPipelineDepthTestSkyBox(bool depth_test, bool depth_write)
diff --git a/indra/llrender/llgl.h b/indra/llrender/llgl.h
index 6e1f5e6deb..386d12d70a 100644
--- a/indra/llrender/llgl.h
+++ b/indra/llrender/llgl.h
@@ -266,7 +266,6 @@ public:
 	static void dumpStates();
 	static void checkStates(const std::string& msg = "");
 	static void checkTextureChannels(const std::string& msg = "");
-	static void checkClientArrays(const std::string& msg = "", U32 data_mask = 0);
 	
 protected:
 	static boost::unordered_map<LLGLenum, LLGLboolean> sStateMap;
diff --git a/indra/llrender/llglslshader.cpp b/indra/llrender/llglslshader.cpp
index 2f1ce0eec9..220e88386a 100644
--- a/indra/llrender/llglslshader.cpp
+++ b/indra/llrender/llglslshader.cpp
@@ -50,7 +50,6 @@ using std::string;
 GLhandleARB LLGLSLShader::sCurBoundShader = 0;
 LLGLSLShader* LLGLSLShader::sCurBoundShaderPtr = NULL;
 S32 LLGLSLShader::sIndexedTextureChannels = 0;
-bool LLGLSLShader::sNoFixedFunction = false;
 bool LLGLSLShader::sProfileEnabled = false;
 std::set<LLGLSLShader*> LLGLSLShader::sInstances;
 U64 LLGLSLShader::sTotalTimeElapsed = 0;
diff --git a/indra/llrender/llglslshader.h b/indra/llrender/llglslshader.h
index 6fdb789087..85e83dbcb9 100644
--- a/indra/llrender/llglslshader.h
+++ b/indra/llrender/llglslshader.h
@@ -148,7 +148,6 @@ public:
 	static GLhandleARB sCurBoundShader;
 	static LLGLSLShader* sCurBoundShaderPtr;
 	static S32 sIndexedTextureChannels;
-	static bool sNoFixedFunction;
 
 	static void initProfile();
 	static void finishProfile(bool emit_report = true);
diff --git a/indra/llrender/llrender.cpp b/indra/llrender/llrender.cpp
index 0c180ed50d..c426c769f3 100644
--- a/indra/llrender/llrender.cpp
+++ b/indra/llrender/llrender.cpp
@@ -128,42 +128,15 @@ void LLTexUnit::refreshState(void)
 	
 	glActiveTextureARB(GL_TEXTURE0_ARB + mIndex);
 
-	//
-	// 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 = !LLGLSLShader::sNoFixedFunction && 
-		(mIndex < gGLManager.mNumTextureUnits) && mCurrTexType != LLTexUnit::TT_MULTISAMPLE_TEXTURE;
-		
 	if (mCurrTexType != TT_NONE)
 	{
-		if (enableDisable)
-		{
-			glEnable(sGLTextureType[mCurrTexType]);
-		}
-		
 		glBindTexture(sGLTextureType[mCurrTexType], mCurrTexture);
 	}
 	else
 	{
-		if (enableDisable)
-		{
-			glDisable(GL_TEXTURE_2D);
-		}
-		
 		glBindTexture(GL_TEXTURE_2D, 0);	
 	}
 
-	if (mCurrBlendType != TB_COMBINE)
-	{
-		setTextureBlendType(mCurrBlendType);
-	}
-	else
-	{
-		setTextureCombiner(mCurrColorOp, mCurrColorSrc1, mCurrColorSrc2, false);
-		setTextureCombiner(mCurrAlphaOp, mCurrAlphaSrc1, mCurrAlphaSrc2, true);
-	}
-
     setTextureColorSpace(mTexColorSpace);
 }
 
@@ -196,14 +169,6 @@ void LLTexUnit::enable(eTextureType type)
 		mCurrTexType = type;
 
 		gGL.flush();
-		if (!LLGLSLShader::sNoFixedFunction && 
-			type != LLTexUnit::TT_MULTISAMPLE_TEXTURE &&
-			mIndex < gGLManager.mNumTextureUnits)
-		{
-			stop_glerror();
-			glEnable(sGLTextureType[type]);
-			stop_glerror();
-		}
 	}
 }
 
@@ -216,13 +181,6 @@ void LLTexUnit::disable(void)
 		activate();
 		unbind(mCurrTexType);
 		gGL.flush();
-		if (!LLGLSLShader::sNoFixedFunction &&
-			mCurrTexType != LLTexUnit::TT_MULTISAMPLE_TEXTURE &&
-			mIndex < gGLManager.mNumTextureUnits)
-		{
-			glDisable(sGLTextureType[mCurrTexType]);
-		}
-
         setTextureColorSpace(TCS_LINEAR);
 		
 		mCurrTexType = TT_NONE;
@@ -465,7 +423,7 @@ void LLTexUnit::unbind(eTextureType type)
 
         // Always make sure our texture color space is reset to linear.  SRGB sampling should be opt-in in the vast majority of cases.  Also prevents color space "popping".
         mTexColorSpace = TCS_LINEAR;
-		if (LLGLSLShader::sNoFixedFunction && type == LLTexUnit::TT_TEXTURE)
+		if (type == LLTexUnit::TT_TEXTURE)
 		{
 			glBindTexture(sGLTextureType[type], sWhiteTexture);
 		}
@@ -577,55 +535,6 @@ 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.
-	if (mCurrBlendType == type && !gGL.mDirty)
-	{
-		return;
-	}
-
-	gGL.flush();
-
-	activate();
-	mCurrBlendType = type;
-	S32 scale_amount = 1;
-	switch (type) 
-	{
-		case TB_REPLACE:
-			glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
-			break;
-		case TB_ADD:
-			glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_ADD);
-			break;
-		case TB_MULT:
-			glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
-			break;
-		case TB_MULT_X2:
-			glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
-			scale_amount = 2;
-			break;
-		case TB_ALPHA_BLEND:
-			glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_DECAL);
-			break;
-		case TB_COMBINE:
-			glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE_ARB);
-			break;
-		default:
-			LL_ERRS() << "Unknown Texture Blend Type: " << type << LL_ENDL;
-			break;
-	}
-	setColorScale(scale_amount);
-	setAlphaScale(1);
-}
-
 GLint LLTexUnit::getTextureSource(eTextureBlendSrc src)
 {
 	switch(src)
@@ -702,159 +611,6 @@ 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();
-	if (mCurrBlendType != TB_COMBINE || gGL.mDirty)
-	{
-		mCurrBlendType = TB_COMBINE;
-		gGL.flush();
-		glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE_ARB);
-	}
-	
-	// We want an early out, because this function does a LOT of stuff.
-	if ( ( (isAlpha && (mCurrAlphaOp == op) && (mCurrAlphaSrc1 == src1) && (mCurrAlphaSrc2 == src2))
-			|| (!isAlpha && (mCurrColorOp == op) && (mCurrColorSrc1 == src1) && (mCurrColorSrc2 == src2)) ) && !gGL.mDirty)
-	{
-		return;
-	}
-
-	gGL.flush();
-
-	// Get the gl source enums according to the eTextureBlendSrc sources passed in
-	GLint source1 = getTextureSource(src1);
-	GLint source2 = getTextureSource(src2);
-	// Get the gl operand enums according to the eTextureBlendSrc sources passed in
-	GLint operand1 = getTextureSourceType(src1, isAlpha);
-	GLint operand2 = getTextureSourceType(src2, isAlpha);
-	// Default the scale amount to 1
-	S32 scale_amount = 1;
-	GLenum comb_enum, src0_enum, src1_enum, src2_enum, operand0_enum, operand1_enum, operand2_enum;
-	
-	if (isAlpha)
-	{
-		// Set enums to ALPHA ones
-		comb_enum = GL_COMBINE_ALPHA_ARB;
-		src0_enum = GL_SOURCE0_ALPHA_ARB;
-		src1_enum = GL_SOURCE1_ALPHA_ARB;
-		src2_enum = GL_SOURCE2_ALPHA_ARB;
-		operand0_enum = GL_OPERAND0_ALPHA_ARB;
-		operand1_enum = GL_OPERAND1_ALPHA_ARB;
-		operand2_enum = GL_OPERAND2_ALPHA_ARB;
-
-		// cache current combiner
-		mCurrAlphaOp = op;
-		mCurrAlphaSrc1 = src1;
-		mCurrAlphaSrc2 = src2;
-	}
-	else 
-	{
-		// Set enums to RGB ones
-		comb_enum = GL_COMBINE_RGB_ARB;
-		src0_enum = GL_SOURCE0_RGB_ARB;
-		src1_enum = GL_SOURCE1_RGB_ARB;
-		src2_enum = GL_SOURCE2_RGB_ARB;
-		operand0_enum = GL_OPERAND0_RGB_ARB;
-		operand1_enum = GL_OPERAND1_RGB_ARB;
-		operand2_enum = GL_OPERAND2_RGB_ARB;
-
-		// cache current combiner
-		mCurrColorOp = op;
-		mCurrColorSrc1 = src1;
-		mCurrColorSrc2 = src2;
-	}
-
-	switch(op)
-	{
-		case TBO_REPLACE:
-			// Slightly special syntax (no second sources), just set all and return.
-			glTexEnvi(GL_TEXTURE_ENV, comb_enum, GL_REPLACE);
-			glTexEnvi(GL_TEXTURE_ENV, src0_enum, source1);
-			glTexEnvi(GL_TEXTURE_ENV, operand0_enum, operand1);
-			(isAlpha) ? setAlphaScale(1) : setColorScale(1);
-			return;
-
-		case TBO_MULT:
-			glTexEnvi(GL_TEXTURE_ENV, comb_enum, GL_MODULATE);
-			break;
-
-		case TBO_MULT_X2:
-			glTexEnvi(GL_TEXTURE_ENV, comb_enum, GL_MODULATE);
-			scale_amount = 2;
-			break;
-
-		case TBO_MULT_X4:
-			glTexEnvi(GL_TEXTURE_ENV, comb_enum, GL_MODULATE);
-			scale_amount = 4;
-			break;
-
-		case TBO_ADD:
-			glTexEnvi(GL_TEXTURE_ENV, comb_enum, GL_ADD);
-			break;
-
-		case TBO_ADD_SIGNED:
-			glTexEnvi(GL_TEXTURE_ENV, comb_enum, GL_ADD_SIGNED_ARB);
-			break;
-
-		case TBO_SUBTRACT:
-			glTexEnvi(GL_TEXTURE_ENV, comb_enum, GL_SUBTRACT_ARB);
-			break;
-
-		case TBO_LERP_VERT_ALPHA:
-			glTexEnvi(GL_TEXTURE_ENV, comb_enum, GL_INTERPOLATE);
-			glTexEnvi(GL_TEXTURE_ENV, src2_enum, GL_PRIMARY_COLOR_ARB);
-			glTexEnvi(GL_TEXTURE_ENV, operand2_enum, GL_SRC_ALPHA);
-			break;
-
-		case TBO_LERP_TEX_ALPHA:
-			glTexEnvi(GL_TEXTURE_ENV, comb_enum, GL_INTERPOLATE);
-			glTexEnvi(GL_TEXTURE_ENV, src2_enum, GL_TEXTURE);
-			glTexEnvi(GL_TEXTURE_ENV, operand2_enum, GL_SRC_ALPHA);
-			break;
-
-		case TBO_LERP_PREV_ALPHA:
-			glTexEnvi(GL_TEXTURE_ENV, comb_enum, GL_INTERPOLATE);
-			glTexEnvi(GL_TEXTURE_ENV, src2_enum, GL_PREVIOUS_ARB);
-			glTexEnvi(GL_TEXTURE_ENV, operand2_enum, GL_SRC_ALPHA);
-			break;
-
-		case TBO_LERP_CONST_ALPHA:
-			glTexEnvi(GL_TEXTURE_ENV, comb_enum, GL_INTERPOLATE);
-			glTexEnvi(GL_TEXTURE_ENV, src2_enum, GL_CONSTANT_ARB);
-			glTexEnvi(GL_TEXTURE_ENV, operand2_enum, GL_SRC_ALPHA);
-			break;
-
-		case TBO_LERP_VERT_COLOR:
-			glTexEnvi(GL_TEXTURE_ENV, comb_enum, GL_INTERPOLATE);
-			glTexEnvi(GL_TEXTURE_ENV, src2_enum, GL_PRIMARY_COLOR_ARB);
-			glTexEnvi(GL_TEXTURE_ENV, operand2_enum, (isAlpha) ? GL_SRC_ALPHA : GL_SRC_COLOR);
-			break;
-
-		default:
-			LL_WARNS() << "Unknown eTextureBlendOp: " << op << ".  Setting op to replace." << LL_ENDL;
-			// Slightly special syntax (no second sources), just set all and return.
-			glTexEnvi(GL_TEXTURE_ENV, comb_enum, GL_REPLACE);
-			glTexEnvi(GL_TEXTURE_ENV, src0_enum, source1);
-			glTexEnvi(GL_TEXTURE_ENV, operand0_enum, operand1);
-			(isAlpha) ? setAlphaScale(1) : setColorScale(1);
-			return;
-	}
-
-	// Set sources, operands, and scale accordingly
-	glTexEnvi(GL_TEXTURE_ENV, src0_enum, source1);
-	glTexEnvi(GL_TEXTURE_ENV, operand0_enum, operand1);
-	glTexEnvi(GL_TEXTURE_ENV, src1_enum, source2);
-	glTexEnvi(GL_TEXTURE_ENV, operand1_enum, operand2);
-	(isAlpha) ? setAlphaScale(scale_amount) : setColorScale(scale_amount);
-}
-
 void LLTexUnit::setColorScale(S32 scale)
 {
 	if (mCurrColorScale != scale || gGL.mDirty)
@@ -943,26 +699,12 @@ LLLightState::LLLightState(S32 index)
 
 void LLLightState::enable()
 {
-	if (!mEnabled)
-	{
-		if (!LLGLSLShader::sNoFixedFunction)
-		{
-			glEnable(GL_LIGHT0+mIndex);
-		}
-		mEnabled = true;
-	}
+	mEnabled = true;
 }
 
 void LLLightState::disable()
 {
-	if (mEnabled)
-	{
-		if (!LLGLSLShader::sNoFixedFunction)
-		{
-			glDisable(GL_LIGHT0+mIndex);
-		}
-		mEnabled = false;
-	}
+	mEnabled = false;
 }
 
 void LLLightState::setDiffuse(const LLColor4& diffuse)
@@ -971,10 +713,6 @@ void LLLightState::setDiffuse(const LLColor4& diffuse)
 	{
 		++gGL.mLightHash;
 		mDiffuse = diffuse;
-		if (!LLGLSLShader::sNoFixedFunction)
-		{
-			glLightfv(GL_LIGHT0+mIndex, GL_DIFFUSE, mDiffuse.mV);
-		}
 	}
 }
 
@@ -1002,10 +740,6 @@ void LLLightState::setAmbient(const LLColor4& ambient)
 	{
 		++gGL.mLightHash;
 		mAmbient = ambient;
-		if (!LLGLSLShader::sNoFixedFunction)
-		{
-			glLightfv(GL_LIGHT0+mIndex, GL_AMBIENT, mAmbient.mV);
-		}
 	}
 }
 
@@ -1015,10 +749,6 @@ void LLLightState::setSpecular(const LLColor4& specular)
 	{
 		++gGL.mLightHash;
 		mSpecular = specular;
-		if (!LLGLSLShader::sNoFixedFunction)
-		{
-			glLightfv(GL_LIGHT0+mIndex, GL_SPECULAR, mSpecular.mV);
-		}
 	}
 }
 
@@ -1027,20 +757,11 @@ void LLLightState::setPosition(const LLVector4& position)
 	//always set position because modelview matrix may have changed
 	++gGL.mLightHash;
 	mPosition = position;
-	if (!LLGLSLShader::sNoFixedFunction)
-	{
-		glLightfv(GL_LIGHT0+mIndex, GL_POSITION, mPosition.mV);
-	}
-	else
-	{ //transform position by current modelview matrix
-		glh::vec4f pos(position.mV);
-
-		const glh::matrix4f& mat = gGL.getModelviewMatrix();
-		mat.mult_matrix_vec(pos);
-
-		mPosition.set(pos.v);
-	}
-
+	//transform position by current modelview matrix
+	glh::vec4f pos(position.mV);
+	const glh::matrix4f& mat = gGL.getModelviewMatrix();
+	mat.mult_matrix_vec(pos);
+	mPosition.set(pos.v);
 }
 
 void LLLightState::setConstantAttenuation(const F32& atten)
@@ -1049,10 +770,6 @@ void LLLightState::setConstantAttenuation(const F32& atten)
 	{
 		mConstantAtten = atten;
 		++gGL.mLightHash;
-		if (!LLGLSLShader::sNoFixedFunction)
-		{
-			glLightf(GL_LIGHT0+mIndex, GL_CONSTANT_ATTENUATION, atten);
-		}
 	}
 }
 
@@ -1062,10 +779,6 @@ void LLLightState::setLinearAttenuation(const F32& atten)
 	{
 		++gGL.mLightHash;
 		mLinearAtten = atten;
-		if (!LLGLSLShader::sNoFixedFunction)
-		{
-			glLightf(GL_LIGHT0+mIndex, GL_LINEAR_ATTENUATION, atten);
-		}
 	}
 }
 
@@ -1075,10 +788,6 @@ void LLLightState::setQuadraticAttenuation(const F32& atten)
 	{
 		++gGL.mLightHash;
 		mQuadraticAtten = atten;
-		if (!LLGLSLShader::sNoFixedFunction)
-		{
-			glLightf(GL_LIGHT0+mIndex, GL_QUADRATIC_ATTENUATION, atten);
-		}
 	}
 }
 
@@ -1088,10 +797,6 @@ void LLLightState::setSpotExponent(const F32& exponent)
 	{
 		++gGL.mLightHash;
 		mSpotExponent = exponent;
-		if (!LLGLSLShader::sNoFixedFunction)
-		{
-			glLightf(GL_LIGHT0+mIndex, GL_SPOT_EXPONENT, exponent);
-		}
 	}
 }
 
@@ -1101,10 +806,6 @@ void LLLightState::setSpotCutoff(const F32& cutoff)
 	{
 		++gGL.mLightHash;
 		mSpotCutoff = cutoff;
-		if (!LLGLSLShader::sNoFixedFunction)
-		{
-			glLightf(GL_LIGHT0+mIndex, GL_SPOT_CUTOFF, cutoff);
-		}
 	}
 }
 
@@ -1113,19 +814,12 @@ void LLLightState::setSpotDirection(const LLVector3& direction)
 	//always set direction because modelview matrix may have changed
 	++gGL.mLightHash;
 	mSpotDirection = direction;
-	if (!LLGLSLShader::sNoFixedFunction)
-	{
-		glLightfv(GL_LIGHT0+mIndex, GL_SPOT_DIRECTION, direction.mV);
-	}
-	else
-	{ //transform direction by current modelview matrix
-		glh::vec3f dir(direction.mV);
+	//transform direction by current modelview matrix
+	glh::vec3f dir(direction.mV);
+	const glh::matrix4f& mat = gGL.getModelviewMatrix();
+	mat.mult_matrix_dir(dir);
 
-		const glh::matrix4f& mat = gGL.getModelviewMatrix();
-		mat.mult_matrix_dir(dir);
-
-		mSpotDirection.set(dir.v);
-	}
+	mSpotDirection.set(dir.v);
 }
 
 LLRender::LLRender()
@@ -1232,7 +926,7 @@ void LLRender::refreshState(void)
 
 	setColorMask(mCurrColorMask[0], mCurrColorMask[1], mCurrColorMask[2], mCurrColorMask[3]);
 	
-	setAlphaRejectSettings(mCurrAlphaFunc, mCurrAlphaFuncVal);
+    flush();
 
 	mDirty = false;
 }
@@ -1420,39 +1114,6 @@ void LLRender::syncMatrices()
 			syncLightState();
 		}
 	}
-	else if (!LLGLSLShader::sNoFixedFunction)
-	{
-		static const GLenum mode[] = 
-		{
-			GL_MODELVIEW,
-			GL_PROJECTION,
-			GL_TEXTURE,
-			GL_TEXTURE,
-			GL_TEXTURE,
-			GL_TEXTURE,
-		};
-
-		for (U32 i = 0; i < MM_TEXTURE0; ++i)
-		{
-			if (mMatHash[i] != mCurMatHash[i])
-			{
-				glMatrixMode(mode[i]);
-				glLoadMatrixf(mMatrix[i][mMatIdx[i]].m);
-				mCurMatHash[i] = mMatHash[i];
-			}
-		}
-
-		for (U32 i = MM_TEXTURE0; i < NUM_MATRIX_MODES; ++i)
-		{
-			if (mMatHash[i] != mCurMatHash[i])
-			{
-				gGL.getTexUnit(i-MM_TEXTURE0)->activate();
-				glMatrixMode(mode[i]);
-				glLoadMatrixf(mMatrix[i][mMatIdx[i]].m);
-				mCurMatHash[i] = mMatHash[i];
-			}
-		}
-	}
 }
 
 void LLRender::translatef(const GLfloat& x, const GLfloat& y, const GLfloat& z)
@@ -1768,55 +1429,6 @@ void LLRender::setSceneBlendType(eBlendType type)
 	}
 }
 
-void LLRender::setAlphaRejectSettings(eCompareFunc func, F32 value)
-{
-	flush();
-
-	if (LLGLSLShader::sNoFixedFunction)
-	{ //glAlphaFunc is deprecated in OpenGL 3.3
-		return;
-	}
-
-	if (mCurrAlphaFunc != func ||
-		mCurrAlphaFuncVal != value)
-	{
-		mCurrAlphaFunc = func;
-		mCurrAlphaFuncVal = value;
-		if (func == CF_DEFAULT)
-		{
-			glAlphaFunc(GL_GREATER, 0.01f);
-		} 
-		else
-		{
-			glAlphaFunc(sGLCompareFunc[func], value);
-		}
-	}
-
-	if (gDebugGL)
-	{ //make sure cached state is correct
-		GLint cur_func = 0;
-		glGetIntegerv(GL_ALPHA_TEST_FUNC, &cur_func);
-
-		if (func == CF_DEFAULT)
-		{
-			func = CF_GREATER;
-		}
-
-		if (cur_func != sGLCompareFunc[func])
-		{
-			LL_ERRS() << "Alpha test function corrupted!" << LL_ENDL;
-		}
-
-		F32 ref = 0.f;
-		glGetFloatv(GL_ALPHA_TEST_REF, &ref);
-
-		if (ref != value)
-		{
-			LL_ERRS() << "Alpha test value corrupted!" << LL_ENDL;
-		}
-	}
-}
-
 void LLRender::blendFunc(eBlendFactor sfactor, eBlendFactor dfactor)
 {
 	llassert(sfactor < BF_UNDEF);
@@ -1889,10 +1501,6 @@ void LLRender::setAmbientLightColor(const LLColor4& color)
 	{
 		++mLightHash;
 		mAmbientLightColor = color;
-		if (!LLGLSLShader::sNoFixedFunction)
-		{
-			glLightModelfv(GL_LIGHT_MODEL_AMBIENT, color.mV);
-		}
 	}
 }
 
@@ -2345,7 +1953,7 @@ void LLRender::color3fv(const GLfloat* c)
 void LLRender::diffuseColor3f(F32 r, F32 g, F32 b)
 {
 	LLGLSLShader* shader = LLGLSLShader::sCurBoundShaderPtr;
-	llassert(!LLGLSLShader::sNoFixedFunction || shader != NULL);
+	llassert(shader != NULL);
 
 	if (shader)
 	{
@@ -2360,7 +1968,7 @@ void LLRender::diffuseColor3f(F32 r, F32 g, F32 b)
 void LLRender::diffuseColor3fv(const F32* c)
 {
 	LLGLSLShader* shader = LLGLSLShader::sCurBoundShaderPtr;
-	llassert(!LLGLSLShader::sNoFixedFunction || shader != NULL);
+	llassert(shader != NULL);
 
 	if (shader)
 	{
@@ -2375,7 +1983,7 @@ void LLRender::diffuseColor3fv(const F32* c)
 void LLRender::diffuseColor4f(F32 r, F32 g, F32 b, F32 a)
 {
 	LLGLSLShader* shader = LLGLSLShader::sCurBoundShaderPtr;
-	llassert(!LLGLSLShader::sNoFixedFunction || shader != NULL);
+	llassert(shader != NULL);
 
 	if (shader)
 	{
@@ -2390,7 +1998,7 @@ void LLRender::diffuseColor4f(F32 r, F32 g, F32 b, F32 a)
 void LLRender::diffuseColor4fv(const F32* c)
 {
 	LLGLSLShader* shader = LLGLSLShader::sCurBoundShaderPtr;
-	llassert(!LLGLSLShader::sNoFixedFunction || shader != NULL);
+	llassert(shader != NULL);
 
 	if (shader)
 	{
@@ -2405,7 +2013,7 @@ void LLRender::diffuseColor4fv(const F32* c)
 void LLRender::diffuseColor4ubv(const U8* c)
 {
 	LLGLSLShader* shader = LLGLSLShader::sCurBoundShaderPtr;
-	llassert(!LLGLSLShader::sNoFixedFunction || shader != NULL);
+	llassert(shader != NULL);
 
 	if (shader)
 	{
@@ -2420,7 +2028,7 @@ void LLRender::diffuseColor4ubv(const U8* c)
 void LLRender::diffuseColor4ub(U8 r, U8 g, U8 b, U8 a)
 {
 	LLGLSLShader* shader = LLGLSLShader::sCurBoundShaderPtr;
-	llassert(!LLGLSLShader::sNoFixedFunction || shader != NULL);
+	llassert(shader != NULL);
 
 	if (shader)
 	{
diff --git a/indra/llrender/llrender.h b/indra/llrender/llrender.h
index 7f19a45410..cdf4075244 100644
--- a/indra/llrender/llrender.h
+++ b/indra/llrender/llrender.h
@@ -105,10 +105,7 @@ public:
 		TBO_LERP_VERT_ALPHA,		// Interpolate based on Vertex Alpha (VA): ( Source1 * VA + Source2 * (1-VA) )
 		TBO_LERP_TEX_ALPHA,			// Interpolate based on Texture Alpha (TA): ( Source1 * TA + Source2 * (1-TA) )
 		TBO_LERP_PREV_ALPHA,		// Interpolate based on Previous Alpha (PA): ( Source1 * PA + Source2 * (1-PA) )
-		TBO_LERP_CONST_ALPHA,		// Interpolate based on Const Alpha (CA): ( Source1 * CA + Source2 * (1-CA) )
-		TBO_LERP_VERT_COLOR			// Interpolate based on Vertex Col (VC): ( Source1 * VC + Source2 * (1-VC) )
-										// *Note* TBO_LERP_VERTEX_COLOR only works with setTextureColorBlend(),
-										// and falls back to TBO_LERP_VERTEX_ALPHA for setTextureAlphaBlend().
+		TBO_LERP_CONST_ALPHA		// Interpolate based on Const Alpha (CA): ( Source1 * CA + Source2 * (1-CA) )
 	} eTextureBlendOp;
 
 	typedef enum 
@@ -201,15 +198,6 @@ public:
 	// make sure you want to permanently change the filtering for the bound texture.
 	void setTextureFilteringOption(LLTexUnit::eTextureFilterOptions option);
 
-	void setTextureBlendType(eTextureBlendType type);
-
-	inline void setTextureColorBlend(eTextureBlendOp op, eTextureBlendSrc src1, eTextureBlendSrc src2 = TBS_PREV_COLOR)
-	{ setTextureCombiner(op, src1, src2, false); }
-
-	// NOTE: If *_COLOR enums are passed to src1 or src2, the corresponding *_ALPHA enum will be used instead.
-	inline void setTextureAlphaBlend(eTextureBlendOp op, eTextureBlendSrc src1, eTextureBlendSrc src2 = TBS_PREV_ALPHA)
-	{ setTextureCombiner(op, src1, src2, true); }
-
 	static U32 getInternalType(eTextureType type);
 
 	U32 getCurrTexture(void) { return mCurrTexture; }
@@ -243,7 +231,6 @@ protected:
 	void setAlphaScale(S32 scale);
 	GLint getTextureSource(eTextureBlendSrc src);
 	GLint getTextureSourceType(eTextureBlendSrc src, bool isAlpha = false);
-	void setTextureCombiner(eTextureBlendOp op, eTextureBlendSrc src1, eTextureBlendSrc src2, bool isAlpha = false);
 };
 
 class LLLightState
@@ -444,8 +431,6 @@ public:
 	void setColorMask(bool writeColorR, bool writeColorG, bool writeColorB, bool writeAlpha);
 	void setSceneBlendType(eBlendType type);
 
-	void setAlphaRejectSettings(eCompareFunc func, F32 value = 0.01f);
-
 	// applies blend func to both color and alpha
 	void blendFunc(eBlendFactor sfactor, eBlendFactor dfactor);
 	// applies separate blend functions to color and alpha
diff --git a/indra/llrender/llrender2dutils.cpp b/indra/llrender/llrender2dutils.cpp
index 5a942996be..ad21bd4f48 100644
--- a/indra/llrender/llrender2dutils.cpp
+++ b/indra/llrender/llrender2dutils.cpp
@@ -395,15 +395,7 @@ void gl_draw_scaled_image_with_border(S32 x, S32 y, S32 width, S32 height, LLTex
 
 	if (solid_color)
 	{
-		if (LLGLSLShader::sNoFixedFunction)
-		{
-			gSolidColorProgram.bind();
-		}
-		else
-		{
-			gGL.getTexUnit(0)->setTextureColorBlend(LLTexUnit::TBO_REPLACE, LLTexUnit::TBS_PREV_COLOR);
-			gGL.getTexUnit(0)->setTextureAlphaBlend(LLTexUnit::TBO_MULT, LLTexUnit::TBS_TEX_ALPHA, LLTexUnit::TBS_VERT_ALPHA);
-		}
+		gSolidColorProgram.bind();
 	}
 
 	if (center_rect.mLeft == 0.f
@@ -650,14 +642,7 @@ void gl_draw_scaled_image_with_border(S32 x, S32 y, S32 width, S32 height, LLTex
 
 	if (solid_color)
 	{
-		if (LLGLSLShader::sNoFixedFunction)
-		{
-			gUIProgram.bind();
-		}
-		else
-		{
-			gGL.getTexUnit(0)->setTextureBlendType(LLTexUnit::TB_MULT);
-		}
+		gUIProgram.bind();
 	}
 }
 
@@ -774,10 +759,6 @@ void gl_draw_scaled_rotated_image(S32 x, S32 y, S32 width, S32 height, F32 degre
 
 void gl_stippled_line_3d( const LLVector3& start, const LLVector3& end, const LLColor4& color, F32 phase )
 {
-	phase = fmod(phase, 1.f);
-
-	S32 shift = S32(phase * 4.f) % 4;
-
 	// Stippled line
 	LLGLEnable stipple(GL_LINE_STIPPLE);
 	
@@ -786,11 +767,6 @@ void gl_stippled_line_3d( const LLVector3& start, const LLVector3& end, const LL
 	gGL.flush();
 	glLineWidth(2.5f);
 
-	if (!LLGLSLShader::sNoFixedFunction)
-	{
-		glLineStipple(2, 0x3333 << shift);
-	}
-
 	gGL.begin(LLRender::LINES);
 	{
 		gGL.vertex3fv( start.mV );
@@ -930,52 +906,16 @@ void gl_ring( F32 radius, F32 width, const LLColor4& center_color, const LLColor
 // Draw gray and white checkerboard with black border
 void gl_rect_2d_checkerboard(const LLRect& rect, GLfloat alpha)
 {
-	if (!LLGLSLShader::sNoFixedFunction)
-	{ 
-	// Initialize the first time this is called.
-	const S32 PIXELS = 32;
-	static GLubyte checkerboard[PIXELS * PIXELS];
-	static BOOL first = TRUE;
-	if( first )
-	{
-		for( S32 i = 0; i < PIXELS; i++ )
-		{
-			for( S32 j = 0; j < PIXELS; j++ )
-			{
-				checkerboard[i * PIXELS + j] = ((i & 1) ^ (j & 1)) * 0xFF;
-			}
-		}
-		first = FALSE;
-	}
-	
-	gGL.getTexUnit(0)->unbind(LLTexUnit::TT_TEXTURE);
+	//polygon stipple is deprecated, use "Checker" texture
+	LLPointer<LLUIImage> img = LLRender2D::getInstance()->getUIImage("Checker");
+	gGL.getTexUnit(0)->bind(img->getImage());
+	gGL.getTexUnit(0)->setTextureAddressMode(LLTexUnit::TAM_WRAP);
+	gGL.getTexUnit(0)->setTextureFilteringOption(LLTexUnit::TFO_POINT);
 
-	// ...white squares
-	gGL.color4f( 1.f, 1.f, 1.f, alpha );
-	gl_rect_2d(rect);
+	LLColor4 color(1.f, 1.f, 1.f, alpha);
+	LLRectf uv_rect(0, 0, rect.getWidth()/32.f, rect.getHeight()/32.f);
 
-	// ...gray squares
-	gGL.color4f( .7f, .7f, .7f, alpha );
-	gGL.flush();
-
-		glPolygonStipple( checkerboard );
-
-		LLGLEnable polygon_stipple(GL_POLYGON_STIPPLE);
-		gl_rect_2d(rect);
-	}
-	else
-	{ //polygon stipple is deprecated, use "Checker" texture
-		LLPointer<LLUIImage> img = LLRender2D::getInstance()->getUIImage("Checker");
-		gGL.getTexUnit(0)->bind(img->getImage());
-		gGL.getTexUnit(0)->setTextureAddressMode(LLTexUnit::TAM_WRAP);
-		gGL.getTexUnit(0)->setTextureFilteringOption(LLTexUnit::TFO_POINT);
-
-		LLColor4 color(1.f, 1.f, 1.f, alpha);
-		LLRectf uv_rect(0, 0, rect.getWidth()/32.f, rect.getHeight()/32.f);
-
-		gl_draw_scaled_image(rect.mLeft, rect.mBottom, rect.getWidth(), rect.getHeight(),
-			img->getImage(), color, uv_rect);
-	}
+	gl_draw_scaled_image(rect.mLeft, rect.mBottom, rect.getWidth(), rect.getHeight(), img->getImage(), color, uv_rect);
 	
 	gGL.flush();
 }
diff --git a/indra/llrender/llshadermgr.cpp b/indra/llrender/llshadermgr.cpp
index a9a4314afa..6a53662619 100644
--- a/indra/llrender/llshadermgr.cpp
+++ b/indra/llrender/llshadermgr.cpp
@@ -1054,43 +1054,6 @@ BOOL LLShaderMgr::linkProgramObject(GLhandleARB obj, BOOL suppress_errors)
 		LL_SHADER_LOADING_WARNS() << "GLSL Linker Error:" << LL_ENDL;
 	}
 
-#if LL_DARWIN
-
-	// For some reason this absolutely kills the frame rate when VBO's are enabled
-	if (0)
-	{
-		// Force an evaluation of the gl state so the driver can tell if the shader will run in hardware or software
-		// per Apple's suggestion
-		LLGLSLShader::sNoFixedFunction = false;
-		
-		glUseProgramObjectARB(obj);
-
-		gGL.begin(LLRender::TRIANGLES);
-		gGL.vertex3f(0.0f, 0.0f, 0.0f);
-		gGL.vertex3f(0.0f, 0.0f, 0.0f);
-		gGL.vertex3f(0.0f, 0.0f, 0.0f);
-		gGL.end();
-		gGL.flush();
-		
-		glUseProgramObjectARB(0);
-		
-		LLGLSLShader::sNoFixedFunction = true;
-
-		// Query whether the shader can or cannot run in hardware
-		// http://developer.apple.com/qa/qa2007/qa1502.html
-		GLint vertexGPUProcessing, fragmentGPUProcessing;
-		CGLContextObj ctx = CGLGetCurrentContext();
-		CGLGetParameter(ctx, kCGLCPGPUVertexProcessing, &vertexGPUProcessing);	
-		CGLGetParameter(ctx, kCGLCPGPUFragmentProcessing, &fragmentGPUProcessing);
-		if (!fragmentGPUProcessing || !vertexGPUProcessing)
-		{
-			LL_SHADER_LOADING_WARNS() << "GLSL Linker: Running in Software:" << LL_ENDL;
-			success = GL_FALSE;
-			suppress_errors = FALSE;		
-		}
-	}
-
-#else
 	std::string log = get_object_log(obj);
 	LLStringUtil::toLower(log);
 	if (log.find("software") != std::string::npos)
@@ -1099,7 +1062,6 @@ BOOL LLShaderMgr::linkProgramObject(GLhandleARB obj, BOOL suppress_errors)
 		success = GL_FALSE;
 		suppress_errors = FALSE;
 	}
-#endif
 	return success;
 }
 
diff --git a/indra/llrender/llvertexbuffer.cpp b/indra/llrender/llvertexbuffer.cpp
index 46654cc5b9..dcce5a5a1d 100644
--- a/indra/llrender/llvertexbuffer.cpp
+++ b/indra/llrender/llvertexbuffer.cpp
@@ -441,135 +441,26 @@ void LLVertexBuffer::setupClientArrays(U32 data_mask)
 			data_mask = data_mask & ~MAP_TEXTURE_INDEX;
 		}
 
-		if (LLGLSLShader::sNoFixedFunction)
+		for (U32 i = 0; i < TYPE_MAX; ++i)
 		{
-			for (U32 i = 0; i < TYPE_MAX; ++i)
-			{
-				S32 loc = i;
+			S32 loc = i;
 										
-				U32 mask = 1 << i;
-
-				if (sLastMask & (1 << i))
-				{ //was enabled
-					if (!(data_mask & mask))
-					{ //needs to be disabled
-						glDisableVertexAttribArrayARB(loc);
-					}
-				}
-				else 
-				{	//was disabled
-					if (data_mask & mask)
-					{ //needs to be enabled
-						glEnableVertexAttribArrayARB(loc);
-					}
-				}
-			}
-		}
-		else
-		{
-
-			static const GLenum array[] =
-			{
-				GL_VERTEX_ARRAY,
-				GL_NORMAL_ARRAY,
-				GL_TEXTURE_COORD_ARRAY,
-				GL_COLOR_ARRAY,
-			};
-
-			static const GLenum mask[] = 
-			{
-				MAP_VERTEX,
-				MAP_NORMAL,
-				MAP_TEXCOORD0,
-				MAP_COLOR
-			};
-
-
-
-			for (U32 i = 0; i < 4; ++i)
-			{
-				if (sLastMask & mask[i])
-				{ //was enabled
-					if (!(data_mask & mask[i]))
-					{ //needs to be disabled
-						glDisableClientState(array[i]);
-					}
-					else if (gDebugGL)
-					{ //needs to be enabled, make sure it was (DEBUG)
-						if (!glIsEnabled(array[i]))
-						{
-							if (gDebugSession)
-							{
-								gFailLog << "Bad client state! " << array[i] << " disabled." << std::endl;
-							}
-							else
-							{
-								LL_ERRS() << "Bad client state! " << array[i] << " disabled." << LL_ENDL;
-							}
-						}
-					}
-				}
-				else 
-				{	//was disabled
-					if (data_mask & mask[i])
-					{ //needs to be enabled
-						glEnableClientState(array[i]);
-					}
-					else if (gDebugGL && glIsEnabled(array[i]))
-					{ //needs to be disabled, make sure it was (DEBUG TEMPORARY)
-						if (gDebugSession)
-						{
-							gFailLog << "Bad client state! " << array[i] << " enabled." << std::endl;
-						}
-						else
-						{
-							LL_ERRS() << "Bad client state! " << array[i] << " enabled." << LL_ENDL;
-						}
-					}
-				}
-			}
-		
-			static const U32 map_tc[] = 
-			{
-				MAP_TEXCOORD1,
-				MAP_TEXCOORD2,
-				MAP_TEXCOORD3
-			};
+			U32 mask = 1 << i;
 
-			for (U32 i = 0; i < 3; i++)
-			{
-				if (sLastMask & map_tc[i])
-				{
-					if (!(data_mask & map_tc[i]))
-					{ //disable
-						glClientActiveTextureARB(GL_TEXTURE1_ARB+i);
-						glDisableClientState(GL_TEXTURE_COORD_ARRAY);
-						glClientActiveTextureARB(GL_TEXTURE0_ARB);
-					}
-				}
-				else if (data_mask & map_tc[i])
-				{
-					glClientActiveTextureARB(GL_TEXTURE1_ARB+i);
-					glEnableClientState(GL_TEXTURE_COORD_ARRAY);
-					glClientActiveTextureARB(GL_TEXTURE0_ARB);
+			if (sLastMask & (1 << i))
+			{ //was enabled
+				if (!(data_mask & mask))
+				{ //needs to be disabled
+					glDisableVertexAttribArrayARB(loc);
 				}
 			}
-
-			if (sLastMask & MAP_TANGENT)
-			{
-				if (!(data_mask & MAP_TANGENT))
-				{
-					glClientActiveTextureARB(GL_TEXTURE2_ARB);
-					glDisableClientState(GL_TEXTURE_COORD_ARRAY);
-					glClientActiveTextureARB(GL_TEXTURE0_ARB);
+			else 
+			{	//was disabled
+				if (data_mask & mask)
+				{ //needs to be enabled
+					glEnableVertexAttribArrayARB(loc);
 				}
 			}
-			else if (data_mask & MAP_TANGENT)
-			{
-				glClientActiveTextureARB(GL_TEXTURE2_ARB);
-				glEnableClientState(GL_TEXTURE_COORD_ARRAY);
-				glClientActiveTextureARB(GL_TEXTURE0_ARB);
-			}
 		}
 				
 		sLastMask = data_mask;
@@ -593,7 +484,7 @@ void LLVertexBuffer::drawArrays(U32 mode, const std::vector<LLVector3>& pos)
 void LLVertexBuffer::drawElements(U32 mode, const LLVector4a* pos, const LLVector2* tc, S32 num_indices, const U16* indicesp)
 {
     LL_PROFILE_ZONE_SCOPED;
-	llassert(!LLGLSLShader::sNoFixedFunction || LLGLSLShader::sCurBoundShaderPtr != NULL);
+	llassert(LLGLSLShader::sCurBoundShaderPtr != NULL);
 
 	gGL.syncMatrices();
 
@@ -690,7 +581,7 @@ void LLVertexBuffer::drawRange(U32 mode, U32 start, U32 end, U32 count, U32 indi
 	gGL.syncMatrices();
 
 	llassert(mNumVerts >= 0);
-	llassert(!LLGLSLShader::sNoFixedFunction || LLGLSLShader::sCurBoundShaderPtr != NULL);
+	llassert(LLGLSLShader::sCurBoundShaderPtr != NULL);
 
 	if (mGLArray)
 	{
@@ -758,7 +649,7 @@ void LLVertexBuffer::drawRangeFast(U32 mode, U32 start, U32 end, U32 count, U32
 
 void LLVertexBuffer::draw(U32 mode, U32 count, U32 indices_offset) const
 {
-	llassert(!LLGLSLShader::sNoFixedFunction || LLGLSLShader::sCurBoundShaderPtr != NULL);
+	llassert(LLGLSLShader::sCurBoundShaderPtr != NULL);
 	mMappable = false;
 	gGL.syncMatrices();
 
@@ -809,7 +700,7 @@ void LLVertexBuffer::draw(U32 mode, U32 count, U32 indices_offset) const
 void LLVertexBuffer::drawArrays(U32 mode, U32 first, U32 count) const
 {
     LL_PROFILE_ZONE_SCOPED;
-    llassert(!LLGLSLShader::sNoFixedFunction || LLGLSLShader::sCurBoundShaderPtr != NULL);
+    llassert(LLGLSLShader::sCurBoundShaderPtr != NULL);
     mMappable = false;
     gGL.syncMatrices();
 
@@ -2499,140 +2390,94 @@ void LLVertexBuffer::setupVertexBuffer(U32 data_mask)
 		LL_ERRS() << "LLVertexBuffer::setupVertexBuffer missing required components for supplied data mask." << LL_ENDL;
 	}
 
-	if (LLGLSLShader::sNoFixedFunction)
+	if (data_mask & MAP_NORMAL)
 	{
-		if (data_mask & MAP_NORMAL)
-		{
-			S32 loc = TYPE_NORMAL;
-			void* ptr = (void*)(base + mOffsets[TYPE_NORMAL]);
-			glVertexAttribPointerARB(loc, 3, GL_FLOAT, GL_FALSE, LLVertexBuffer::sTypeSize[TYPE_NORMAL], ptr);
-		}
-		if (data_mask & MAP_TEXCOORD3)
-		{
-			S32 loc = TYPE_TEXCOORD3;
-			void* ptr = (void*)(base + mOffsets[TYPE_TEXCOORD3]);
-			glVertexAttribPointerARB(loc,2,GL_FLOAT, GL_FALSE, LLVertexBuffer::sTypeSize[TYPE_TEXCOORD3], ptr);
-		}
-		if (data_mask & MAP_TEXCOORD2)
-		{
-			S32 loc = TYPE_TEXCOORD2;
-			void* ptr = (void*)(base + mOffsets[TYPE_TEXCOORD2]);
-			glVertexAttribPointerARB(loc,2,GL_FLOAT, GL_FALSE, LLVertexBuffer::sTypeSize[TYPE_TEXCOORD2], ptr);
-		}
-		if (data_mask & MAP_TEXCOORD1)
-		{
-			S32 loc = TYPE_TEXCOORD1;
-			void* ptr = (void*)(base + mOffsets[TYPE_TEXCOORD1]);
-			glVertexAttribPointerARB(loc,2,GL_FLOAT, GL_FALSE, LLVertexBuffer::sTypeSize[TYPE_TEXCOORD1], ptr);
-		}
-		if (data_mask & MAP_TANGENT)
-		{
-			S32 loc = TYPE_TANGENT;
-			void* ptr = (void*)(base + mOffsets[TYPE_TANGENT]);
-			glVertexAttribPointerARB(loc, 4,GL_FLOAT, GL_FALSE, LLVertexBuffer::sTypeSize[TYPE_TANGENT], ptr);
-		}
-		if (data_mask & MAP_TEXCOORD0)
-		{
-			S32 loc = TYPE_TEXCOORD0;
-			void* ptr = (void*)(base + mOffsets[TYPE_TEXCOORD0]);
-			glVertexAttribPointerARB(loc,2,GL_FLOAT, GL_FALSE, LLVertexBuffer::sTypeSize[TYPE_TEXCOORD0], ptr);
-		}
-		if (data_mask & MAP_COLOR)
-		{
-			S32 loc = TYPE_COLOR;
-			//bind emissive instead of color pointer if emissive is present
-			void* ptr = (data_mask & MAP_EMISSIVE) ? (void*)(base + mOffsets[TYPE_EMISSIVE]) : (void*)(base + mOffsets[TYPE_COLOR]);
-			glVertexAttribPointerARB(loc, 4, GL_UNSIGNED_BYTE, GL_TRUE, LLVertexBuffer::sTypeSize[TYPE_COLOR], ptr);
-		}
-		if (data_mask & MAP_EMISSIVE)
-		{
-			S32 loc = TYPE_EMISSIVE;
-			void* ptr = (void*)(base + mOffsets[TYPE_EMISSIVE]);
-			glVertexAttribPointerARB(loc, 4, GL_UNSIGNED_BYTE, GL_TRUE, LLVertexBuffer::sTypeSize[TYPE_EMISSIVE], ptr);
+		S32 loc = TYPE_NORMAL;
+		void* ptr = (void*)(base + mOffsets[TYPE_NORMAL]);
+		glVertexAttribPointerARB(loc, 3, GL_FLOAT, GL_FALSE, LLVertexBuffer::sTypeSize[TYPE_NORMAL], ptr);
+	}
+	if (data_mask & MAP_TEXCOORD3)
+	{
+		S32 loc = TYPE_TEXCOORD3;
+		void* ptr = (void*)(base + mOffsets[TYPE_TEXCOORD3]);
+		glVertexAttribPointerARB(loc,2,GL_FLOAT, GL_FALSE, LLVertexBuffer::sTypeSize[TYPE_TEXCOORD3], ptr);
+	}
+	if (data_mask & MAP_TEXCOORD2)
+	{
+		S32 loc = TYPE_TEXCOORD2;
+		void* ptr = (void*)(base + mOffsets[TYPE_TEXCOORD2]);
+		glVertexAttribPointerARB(loc,2,GL_FLOAT, GL_FALSE, LLVertexBuffer::sTypeSize[TYPE_TEXCOORD2], ptr);
+	}
+	if (data_mask & MAP_TEXCOORD1)
+	{
+		S32 loc = TYPE_TEXCOORD1;
+		void* ptr = (void*)(base + mOffsets[TYPE_TEXCOORD1]);
+		glVertexAttribPointerARB(loc,2,GL_FLOAT, GL_FALSE, LLVertexBuffer::sTypeSize[TYPE_TEXCOORD1], ptr);
+	}
+	if (data_mask & MAP_TANGENT)
+	{
+		S32 loc = TYPE_TANGENT;
+		void* ptr = (void*)(base + mOffsets[TYPE_TANGENT]);
+		glVertexAttribPointerARB(loc, 4,GL_FLOAT, GL_FALSE, LLVertexBuffer::sTypeSize[TYPE_TANGENT], ptr);
+	}
+	if (data_mask & MAP_TEXCOORD0)
+	{
+		S32 loc = TYPE_TEXCOORD0;
+		void* ptr = (void*)(base + mOffsets[TYPE_TEXCOORD0]);
+		glVertexAttribPointerARB(loc,2,GL_FLOAT, GL_FALSE, LLVertexBuffer::sTypeSize[TYPE_TEXCOORD0], ptr);
+	}
+	if (data_mask & MAP_COLOR)
+	{
+		S32 loc = TYPE_COLOR;
+		//bind emissive instead of color pointer if emissive is present
+		void* ptr = (data_mask & MAP_EMISSIVE) ? (void*)(base + mOffsets[TYPE_EMISSIVE]) : (void*)(base + mOffsets[TYPE_COLOR]);
+		glVertexAttribPointerARB(loc, 4, GL_UNSIGNED_BYTE, GL_TRUE, LLVertexBuffer::sTypeSize[TYPE_COLOR], ptr);
+	}
+	if (data_mask & MAP_EMISSIVE)
+	{
+		S32 loc = TYPE_EMISSIVE;
+		void* ptr = (void*)(base + mOffsets[TYPE_EMISSIVE]);
+		glVertexAttribPointerARB(loc, 4, GL_UNSIGNED_BYTE, GL_TRUE, LLVertexBuffer::sTypeSize[TYPE_EMISSIVE], ptr);
 
-			if (!(data_mask & MAP_COLOR))
-			{ //map emissive to color channel when color is not also being bound to avoid unnecessary shader swaps
-				loc = TYPE_COLOR;
-				glVertexAttribPointerARB(loc, 4, GL_UNSIGNED_BYTE, GL_TRUE, LLVertexBuffer::sTypeSize[TYPE_EMISSIVE], ptr);
-			}
-		}
-		if (data_mask & MAP_WEIGHT)
-		{
-			S32 loc = TYPE_WEIGHT;
-			void* ptr = (void*)(base + mOffsets[TYPE_WEIGHT]);
-			glVertexAttribPointerARB(loc, 1, GL_FLOAT, GL_FALSE, LLVertexBuffer::sTypeSize[TYPE_WEIGHT], ptr);
-		}
-		if (data_mask & MAP_WEIGHT4)
-		{
-			S32 loc = TYPE_WEIGHT4;
-			void* ptr = (void*)(base+mOffsets[TYPE_WEIGHT4]);
-			glVertexAttribPointerARB(loc, 4, GL_FLOAT, GL_FALSE, LLVertexBuffer::sTypeSize[TYPE_WEIGHT4], ptr);
-		}
-		if (data_mask & MAP_CLOTHWEIGHT)
-		{
-			S32 loc = TYPE_CLOTHWEIGHT;
-			void* ptr = (void*)(base + mOffsets[TYPE_CLOTHWEIGHT]);
-			glVertexAttribPointerARB(loc, 4, GL_FLOAT, GL_TRUE,  LLVertexBuffer::sTypeSize[TYPE_CLOTHWEIGHT], ptr);
+		if (!(data_mask & MAP_COLOR))
+		{ //map emissive to color channel when color is not also being bound to avoid unnecessary shader swaps
+			loc = TYPE_COLOR;
+			glVertexAttribPointerARB(loc, 4, GL_UNSIGNED_BYTE, GL_TRUE, LLVertexBuffer::sTypeSize[TYPE_EMISSIVE], ptr);
 		}
-		if (data_mask & MAP_TEXTURE_INDEX && 
-				(gGLManager.mGLSLVersionMajor >= 2 || gGLManager.mGLSLVersionMinor >= 30)) //indexed texture rendering requires GLSL 1.30 or later
-		{
+	}
+	if (data_mask & MAP_WEIGHT)
+	{
+		S32 loc = TYPE_WEIGHT;
+		void* ptr = (void*)(base + mOffsets[TYPE_WEIGHT]);
+		glVertexAttribPointerARB(loc, 1, GL_FLOAT, GL_FALSE, LLVertexBuffer::sTypeSize[TYPE_WEIGHT], ptr);
+	}
+	if (data_mask & MAP_WEIGHT4)
+	{
+		S32 loc = TYPE_WEIGHT4;
+		void* ptr = (void*)(base+mOffsets[TYPE_WEIGHT4]);
+		glVertexAttribPointerARB(loc, 4, GL_FLOAT, GL_FALSE, LLVertexBuffer::sTypeSize[TYPE_WEIGHT4], ptr);
+	}
+	if (data_mask & MAP_CLOTHWEIGHT)
+	{
+		S32 loc = TYPE_CLOTHWEIGHT;
+		void* ptr = (void*)(base + mOffsets[TYPE_CLOTHWEIGHT]);
+		glVertexAttribPointerARB(loc, 4, GL_FLOAT, GL_TRUE,  LLVertexBuffer::sTypeSize[TYPE_CLOTHWEIGHT], ptr);
+	}
+	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);
-			glVertexAttribIPointer(loc, 1, GL_UNSIGNED_INT, LLVertexBuffer::sTypeSize[TYPE_VERTEX], ptr);
+		S32 loc = TYPE_TEXTURE_INDEX;
+		void *ptr = (void*) (base + mOffsets[TYPE_VERTEX] + 12);
+		glVertexAttribIPointer(loc, 1, GL_UNSIGNED_INT, LLVertexBuffer::sTypeSize[TYPE_VERTEX], ptr);
 #endif
-		}
-		if (data_mask & MAP_VERTEX)
-		{
-			S32 loc = TYPE_VERTEX;
-			void* ptr = (void*)(base + mOffsets[TYPE_VERTEX]);
-			glVertexAttribPointerARB(loc, 3,GL_FLOAT, GL_FALSE, LLVertexBuffer::sTypeSize[TYPE_VERTEX], ptr);
-		}	
-	}	
-	else
-	{
-		if (data_mask & MAP_NORMAL)
-		{
-			glNormalPointer(GL_FLOAT, LLVertexBuffer::sTypeSize[TYPE_NORMAL], (void*)(base + mOffsets[TYPE_NORMAL]));
-		}
-		if (data_mask & MAP_TEXCOORD3)
-		{
-			glClientActiveTextureARB(GL_TEXTURE3_ARB);
-			glTexCoordPointer(2,GL_FLOAT, LLVertexBuffer::sTypeSize[TYPE_TEXCOORD3], (void*)(base + mOffsets[TYPE_TEXCOORD3]));
-			glClientActiveTextureARB(GL_TEXTURE0_ARB);
-		}
-		if (data_mask & MAP_TEXCOORD2)
-		{
-			glClientActiveTextureARB(GL_TEXTURE2_ARB);
-			glTexCoordPointer(2,GL_FLOAT, LLVertexBuffer::sTypeSize[TYPE_TEXCOORD2], (void*)(base + mOffsets[TYPE_TEXCOORD2]));
-			glClientActiveTextureARB(GL_TEXTURE0_ARB);
-		}
-		if (data_mask & MAP_TEXCOORD1)
-		{
-			glClientActiveTextureARB(GL_TEXTURE1_ARB);
-			glTexCoordPointer(2,GL_FLOAT, LLVertexBuffer::sTypeSize[TYPE_TEXCOORD1], (void*)(base + mOffsets[TYPE_TEXCOORD1]));
-			glClientActiveTextureARB(GL_TEXTURE0_ARB);
-		}
-		if (data_mask & MAP_TANGENT)
-		{
-			glClientActiveTextureARB(GL_TEXTURE2_ARB);
-			glTexCoordPointer(4,GL_FLOAT, LLVertexBuffer::sTypeSize[TYPE_TANGENT], (void*)(base + mOffsets[TYPE_TANGENT]));
-			glClientActiveTextureARB(GL_TEXTURE0_ARB);
-		}
-		if (data_mask & MAP_TEXCOORD0)
-		{
-			glTexCoordPointer(2,GL_FLOAT, LLVertexBuffer::sTypeSize[TYPE_TEXCOORD0], (void*)(base + mOffsets[TYPE_TEXCOORD0]));
-		}
-		if (data_mask & MAP_COLOR)
-		{
-			glColorPointer(4, GL_UNSIGNED_BYTE, LLVertexBuffer::sTypeSize[TYPE_COLOR], (void*)(base + mOffsets[TYPE_COLOR]));
-		}
-		if (data_mask & MAP_VERTEX)
-		{
-			glVertexPointer(3,GL_FLOAT, LLVertexBuffer::sTypeSize[TYPE_VERTEX], (void*)(base + 0));
-		}	
 	}
+	if (data_mask & MAP_VERTEX)
+	{
+		S32 loc = TYPE_VERTEX;
+		void* ptr = (void*)(base + mOffsets[TYPE_VERTEX]);
+		glVertexAttribPointerARB(loc, 3,GL_FLOAT, GL_FALSE, LLVertexBuffer::sTypeSize[TYPE_VERTEX], ptr);
+	}	
 
 	llglassertok();
 }
diff --git a/indra/llwindow/llwindowwin32.cpp b/indra/llwindow/llwindowwin32.cpp
index 062dd02903..b8bfa92279 100644
--- a/indra/llwindow/llwindowwin32.cpp
+++ b/indra/llwindow/llwindowwin32.cpp
@@ -1798,14 +1798,6 @@ void* LLWindowWin32::createSharedContext()
             LL_INFOS() << "Created OpenGL " << llformat("%d.%d", attribs[1], attribs[3]) <<
                 (LLRender::sGLCoreProfile ? " core" : " compatibility") << " context." << LL_ENDL;
             done = true;
-
-            // force sNoFixedFunction iff we're trying to use nsight debugging which does not support many legacy API uses
-
-                // nSight doesn't support use of legacy API funcs in the fixed function pipe
-            if (LLRender::sGLCoreProfile || LLRender::sNsightDebugSupport)
-            {
-                LLGLSLShader::sNoFixedFunction = true;
-            }
         }
     }
 
diff --git a/indra/newview/lldrawpool.cpp b/indra/newview/lldrawpool.cpp
index 92a9bed504..bad0c66fb1 100644
--- a/indra/newview/lldrawpool.cpp
+++ b/indra/newview/lldrawpool.cpp
@@ -493,7 +493,7 @@ void LLRenderPass::pushRiggedMaskBatches(U32 type, U32 mask, BOOL texture, BOOL
             }
             else
             {
-                gGL.setAlphaRejectSettings(LLRender::CF_GREATER, pparams->mAlphaMaskCutoff);
+                gGL.flush();
             }
 
             if (lastAvatar != pparams->mAvatar || lastMeshId != pparams->mSkinInfo->mHash)
diff --git a/indra/newview/lldrawpoolavatar.cpp b/indra/newview/lldrawpoolavatar.cpp
index 125cd3fd5b..fa67b9902d 100644
--- a/indra/newview/lldrawpoolavatar.cpp
+++ b/indra/newview/lldrawpoolavatar.cpp
@@ -497,11 +497,8 @@ void LLDrawPoolAvatar::beginImpostor()
 		LLVOAvatar::sNumVisibleAvatars = 0;
 	}
 
-	if (LLGLSLShader::sNoFixedFunction)
-	{
-		gImpostorProgram.bind();
-		gImpostorProgram.setMinimumAlpha(0.01f);
-	}
+	gImpostorProgram.bind();
+	gImpostorProgram.setMinimumAlpha(0.01f);
 
 	gPipeline.enableLightsFullbright();
 	sDiffuseChannel = 0;
@@ -511,10 +508,7 @@ void LLDrawPoolAvatar::endImpostor()
 {
     LL_PROFILE_ZONE_SCOPED
 
-	if (LLGLSLShader::sNoFixedFunction)
-	{
-		gImpostorProgram.unbind();
-	}
+	gImpostorProgram.unbind();
 	gPipeline.enableLightsDynamic();
 }
 
@@ -522,7 +516,7 @@ void LLDrawPoolAvatar::beginRigid()
 {
     LL_PROFILE_ZONE_SCOPED
 
-	if (gPipeline.canUseVertexShaders())
+	if (gPipeline.shadersLoaded())
 	{
 		if (LLPipeline::sUnderWaterRender)
 		{
@@ -670,7 +664,7 @@ void LLDrawPoolAvatar::beginSkinned()
 	}
 	else
 	{
-		if(gPipeline.canUseVertexShaders())
+		if(gPipeline.shadersLoaded())
 		{
 			// software skinning, use a basic shader for windlight.
 			// TODO: find a better fallback method for software skinning.
@@ -686,10 +680,7 @@ void LLDrawPoolAvatar::beginSkinned()
 		}
 	}
 
-	if (LLGLSLShader::sNoFixedFunction)
-	{
-		sVertexProgram->setMinimumAlpha(LLDrawPoolAvatar::sMinimumAlpha);
-	}
+	sVertexProgram->setMinimumAlpha(LLDrawPoolAvatar::sMinimumAlpha);
 }
 
 void LLDrawPoolAvatar::endSkinned()
@@ -707,7 +698,7 @@ void LLDrawPoolAvatar::endSkinned()
 	}
 	else
 	{
-		if(gPipeline.canUseVertexShaders())
+		if(gPipeline.shadersLoaded())
 		{
 			// software skinning, use a basic shader for windlight.
 			// TODO: find a better fallback method for software skinning.
diff --git a/indra/newview/lldrawpoolbump.cpp b/indra/newview/lldrawpoolbump.cpp
index af8b194f38..dc52fc7680 100644
--- a/indra/newview/lldrawpoolbump.cpp
+++ b/indra/newview/lldrawpoolbump.cpp
@@ -383,7 +383,6 @@ void LLDrawPoolBump::bindCubeMap(LLGLSLShader* shader, S32 shader_level, S32& di
 				// the cube map in the one pass shiny shaders
 				cube_channel = shader->enableTexture(LLViewerShaderMgr::ENVIRONMENT_MAP, LLTexUnit::TT_CUBE_MAP);
 				cube_map->enableTexture(cube_channel);
-				cube_map->enableTextureCoords(1);
 				diffuse_channel = shader->enableTexture(LLViewerShaderMgr::DIFFUSE_MAP);
 			}
 			else
@@ -402,9 +401,6 @@ void LLDrawPoolBump::bindCubeMap(LLGLSLShader* shader, S32 shader_level, S32& di
 			gGL.getTexUnit(0)->disable();
 			cube_map->enable(0);
 			gGL.getTexUnit(0)->bind(cube_map);
-
-			gGL.getTexUnit(0)->setTextureColorBlend(LLTexUnit::TBO_REPLACE, LLTexUnit::TBS_TEX_COLOR);
-			gGL.getTexUnit(0)->setTextureAlphaBlend(LLTexUnit::TBO_REPLACE, LLTexUnit::TBS_VERT_ALPHA);
 		}
 	}
 }
@@ -537,7 +533,6 @@ void LLDrawPoolBump::beginFullbrightShiny()
 		gGL.getTexUnit(1)->disable();
 		cube_channel = shader->enableTexture(LLViewerShaderMgr::ENVIRONMENT_MAP, LLTexUnit::TT_CUBE_MAP);
 		cube_map->enableTexture(cube_channel);
-		cube_map->enableTextureCoords(1);
 		diffuse_channel = shader->enableTexture(LLViewerShaderMgr::DIFFUSE_MAP);
 
 		gGL.getTexUnit(cube_channel)->bind(cube_map);
@@ -593,21 +588,9 @@ void LLDrawPoolBump::endFullbrightShiny()
 	if( cube_map )
 	{
 		cube_map->disable();
-
-        /*if (diffuse_channel != 0)
-		{
-			shader->disableTexture(LLViewerShaderMgr::DIFFUSE_MAP);
-		}
-		gGL.getTexUnit(0)->activate();
-		gGL.getTexUnit(0)->enable(LLTexUnit::TT_TEXTURE);*/
-
 		shader->unbind();
-		//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;
 	mShiny = FALSE;
@@ -745,23 +728,9 @@ void LLDrawPoolBump::renderBump(U32 pass)
 //static
 void LLDrawPoolBump::endBump(U32 pass)
 {
-	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);
+    gObjectBumpProgram.unbind();
 
-		// Disable texture blending on unit 0
-		gGL.getTexUnit(0)->activate();
-		gGL.getTexUnit(0)->setTextureBlendType(LLTexUnit::TB_MULT);
-	}
-	
-	gGL.setSceneBlendType(LLRender::BT_ALPHA);
+    gGL.setSceneBlendType(LLRender::BT_ALPHA);
 }
 
 S32 LLDrawPoolBump::getNumDeferredPasses()
@@ -1541,7 +1510,7 @@ void LLDrawPoolInvisible::render(S32 pass)
 { //render invisiprims
 	LL_RECORD_BLOCK_TIME(FTM_RENDER_INVISIBLE);
   
-	if (gPipeline.canUseVertexShaders())
+	if (gPipeline.shadersLoaded())
 	{
 		gOcclusionProgram.bind();
 	}
@@ -1553,7 +1522,7 @@ void LLDrawPoolInvisible::render(S32 pass)
 	gGL.setColorMask(true, false);
 	glStencilMask(0xFFFFFFFF);
 
-	if (gPipeline.canUseVertexShaders())
+	if (gPipeline.shadersLoaded())
 	{
 		gOcclusionProgram.unbind();
 	}
diff --git a/indra/newview/lldrawpoolsimple.cpp b/indra/newview/lldrawpoolsimple.cpp
index ca4e20ae9b..a1d769bc83 100644
--- a/indra/newview/lldrawpoolsimple.cpp
+++ b/indra/newview/lldrawpoolsimple.cpp
@@ -591,7 +591,7 @@ void LLDrawPoolGrass::beginRenderPass(S32 pass)
 	}
 	else 
 	{
-		gGL.setAlphaRejectSettings(LLRender::CF_GREATER, 0.5f);
+        gGL.flush();
 		LLGLSLShader::bindNoShader();
 	}
 }
@@ -607,7 +607,7 @@ void LLDrawPoolGrass::endRenderPass(S32 pass)
 	}
 	else
 	{
-		gGL.setAlphaRejectSettings(LLRender::CF_DEFAULT);
+		gGL.flush();
 	}
 }
 
diff --git a/indra/newview/lldrawpoolsky.cpp b/indra/newview/lldrawpoolsky.cpp
index b1eefaab81..3a1efec91b 100644
--- a/indra/newview/lldrawpoolsky.cpp
+++ b/indra/newview/lldrawpoolsky.cpp
@@ -76,16 +76,8 @@ void LLDrawPoolSky::render(S32 pass)
 	}
 
 
-	if (LLGLSLShader::sNoFixedFunction)
-	{ //just use the UI shader (generic single texture no lighting)
-		gOneTextureNoColorProgram.bind();
-	}
-	else
-	{
-		LLGLSLShader::bindNoShader();
-		mShader = NULL;
-	}
-	
+    //just use the UI shader (generic single texture no lighting)
+	gOneTextureNoColorProgram.bind();
 
 	LLGLSPipelineDepthTestSkyBox gls_skybox(true, false);
 
diff --git a/indra/newview/lldrawpoolterrain.cpp b/indra/newview/lldrawpoolterrain.cpp
index 9cea8f5460..adea1909a3 100644
--- a/indra/newview/lldrawpoolterrain.cpp
+++ b/indra/newview/lldrawpoolterrain.cpp
@@ -467,8 +467,6 @@ void LLDrawPoolTerrain::renderFull4TU()
 	glTexGenfv(GL_S, GL_OBJECT_PLANE, tp0.mV);
 	glTexGenfv(GL_T, GL_OBJECT_PLANE, tp1.mV);
 
-	gGL.getTexUnit(0)->setTextureColorBlend(LLTexUnit::TBO_REPLACE, LLTexUnit::TBS_TEX_COLOR);
-
 	//
 	// Stage 1: Generate alpha ramp for detail0/detail1 transition
 	//
@@ -477,10 +475,6 @@ void LLDrawPoolTerrain::renderFull4TU()
 	gGL.getTexUnit(1)->enable(LLTexUnit::TT_TEXTURE);
 	gGL.getTexUnit(1)->activate();
 	
-	// Care about alpha only
-	gGL.getTexUnit(1)->setTextureColorBlend(LLTexUnit::TBO_REPLACE, LLTexUnit::TBS_PREV_COLOR);
-	gGL.getTexUnit(1)->setTextureAlphaBlend(LLTexUnit::TBO_REPLACE, LLTexUnit::TBS_TEX_ALPHA);
-
 	//
 	// Stage 2: Interpolate detail1 with existing based on ramp
 	//
@@ -495,8 +489,6 @@ void LLDrawPoolTerrain::renderFull4TU()
 	glTexGenfv(GL_S, GL_OBJECT_PLANE, tp0.mV);
 	glTexGenfv(GL_T, GL_OBJECT_PLANE, tp1.mV);
 
-	gGL.getTexUnit(2)->setTextureColorBlend(LLTexUnit::TBO_LERP_PREV_ALPHA, LLTexUnit::TBS_PREV_COLOR, LLTexUnit::TBS_TEX_COLOR);
-
 	//
 	// Stage 3: Modulate with primary (vertex) color for lighting
 	//
@@ -504,9 +496,6 @@ void LLDrawPoolTerrain::renderFull4TU()
 	gGL.getTexUnit(3)->enable(LLTexUnit::TT_TEXTURE);
 	gGL.getTexUnit(3)->activate();
 	
-	// Set alpha texture and do lighting modulation
-	gGL.getTexUnit(3)->setTextureColorBlend(LLTexUnit::TBO_MULT, LLTexUnit::TBS_PREV_COLOR, LLTexUnit::TBS_VERT_COLOR);
-
 	gGL.getTexUnit(0)->activate();
 	
 	// GL_BLEND disabled by default
@@ -527,8 +516,6 @@ void LLDrawPoolTerrain::renderFull4TU()
 	glTexGenfv(GL_S, GL_OBJECT_PLANE, tp0.mV);
 	glTexGenfv(GL_T, GL_OBJECT_PLANE, tp1.mV);
 
-	gGL.getTexUnit(0)->setTextureColorBlend(LLTexUnit::TBO_REPLACE, LLTexUnit::TBS_TEX_COLOR);
-
 	//
 	// Stage 1: Generate alpha ramp for detail2/detail3 transition
 	//
@@ -541,10 +528,6 @@ void LLDrawPoolTerrain::renderFull4TU()
 	gGL.loadIdentity();
 	gGL.translatef(-2.f, 0.f, 0.f);
 
-	// Care about alpha only
-	gGL.getTexUnit(1)->setTextureColorBlend(LLTexUnit::TBO_REPLACE, LLTexUnit::TBS_PREV_COLOR);
-	gGL.getTexUnit(1)->setTextureAlphaBlend(LLTexUnit::TBO_REPLACE, LLTexUnit::TBS_TEX_ALPHA);
-
 	//
 	// Stage 2: Interpolate detail2 with existing based on ramp
 	//
@@ -559,8 +542,6 @@ void LLDrawPoolTerrain::renderFull4TU()
 	glTexGenfv(GL_S, GL_OBJECT_PLANE, tp0.mV);
 	glTexGenfv(GL_T, GL_OBJECT_PLANE, tp1.mV);
 
-	gGL.getTexUnit(2)->setTextureColorBlend(LLTexUnit::TBO_LERP_PREV_ALPHA, LLTexUnit::TBS_TEX_COLOR, LLTexUnit::TBS_PREV_COLOR);	
-
 	//
 	// Stage 3: Generate alpha ramp for detail1/detail2 transition
 	//
@@ -574,10 +555,6 @@ void LLDrawPoolTerrain::renderFull4TU()
 	gGL.translatef(-1.f, 0.f, 0.f);
 	gGL.matrixMode(LLRender::MM_MODELVIEW);
 
-	// Set alpha texture and do lighting modulation
-	gGL.getTexUnit(3)->setTextureColorBlend(LLTexUnit::TBO_MULT, LLTexUnit::TBS_PREV_COLOR, LLTexUnit::TBS_VERT_COLOR);
-	gGL.getTexUnit(3)->setTextureAlphaBlend(LLTexUnit::TBO_REPLACE, LLTexUnit::TBS_TEX_ALPHA);
-
 	gGL.getTexUnit(0)->activate();
 	{
 		LLGLEnable blend(GL_BLEND);
@@ -627,8 +604,6 @@ void LLDrawPoolTerrain::renderFull4TU()
 	gGL.matrixMode(LLRender::MM_TEXTURE);
 	gGL.loadIdentity();
 	gGL.matrixMode(LLRender::MM_MODELVIEW);
-
-	gGL.getTexUnit(0)->setTextureBlendType(LLTexUnit::TB_MULT);
 }
 
 void LLDrawPoolTerrain::renderFull2TU()
@@ -667,8 +642,6 @@ void LLDrawPoolTerrain::renderFull2TU()
 	glTexGenfv(GL_S, GL_OBJECT_PLANE, tp0.mV);
 	glTexGenfv(GL_T, GL_OBJECT_PLANE, tp1.mV);
 
-	gGL.getTexUnit(0)->setTextureColorBlend(LLTexUnit::TBO_MULT, LLTexUnit::TBS_TEX_COLOR, LLTexUnit::TBS_VERT_COLOR);
-
 	drawLoop();
 
 	//----------------------------------------------------------------------------
@@ -682,11 +655,6 @@ void LLDrawPoolTerrain::renderFull2TU()
 	glDisable(GL_TEXTURE_GEN_S);
 	glDisable(GL_TEXTURE_GEN_T);
 	
-	// Care about alpha only
-	gGL.getTexUnit(0)->setTextureColorBlend(LLTexUnit::TBO_REPLACE, LLTexUnit::TBS_PREV_COLOR);
-	gGL.getTexUnit(0)->setTextureAlphaBlend(LLTexUnit::TBO_REPLACE, LLTexUnit::TBS_TEX_ALPHA);
-
-
 	//
 	// Stage 1: Write detail1
 	//
@@ -701,9 +669,6 @@ void LLDrawPoolTerrain::renderFull2TU()
 	glTexGenfv(GL_S, GL_OBJECT_PLANE, tp0.mV);
 	glTexGenfv(GL_T, GL_OBJECT_PLANE, tp1.mV);
 
-	gGL.getTexUnit(1)->setTextureColorBlend(LLTexUnit::TBO_MULT, LLTexUnit::TBS_TEX_COLOR, LLTexUnit::TBS_VERT_COLOR);
-	gGL.getTexUnit(1)->setTextureAlphaBlend(LLTexUnit::TBO_REPLACE, LLTexUnit::TBS_PREV_ALPHA);
-
 	gGL.getTexUnit(0)->activate();
 	{
 		LLGLEnable blend(GL_BLEND);
@@ -723,10 +688,6 @@ void LLDrawPoolTerrain::renderFull2TU()
 	gGL.translatef(-1.f, 0.f, 0.f);
 	gGL.matrixMode(LLRender::MM_MODELVIEW);
 
-	// Care about alpha only
-	gGL.getTexUnit(0)->setTextureColorBlend(LLTexUnit::TBO_REPLACE, LLTexUnit::TBS_PREV_COLOR);
-	gGL.getTexUnit(0)->setTextureAlphaBlend(LLTexUnit::TBO_REPLACE, LLTexUnit::TBS_TEX_ALPHA);
-
 	//
 	// Stage 1: Write detail2
 	//
@@ -741,9 +702,6 @@ void LLDrawPoolTerrain::renderFull2TU()
 	glTexGenfv(GL_S, GL_OBJECT_PLANE, tp0.mV);
 	glTexGenfv(GL_T, GL_OBJECT_PLANE, tp1.mV);
 
-	gGL.getTexUnit(1)->setTextureColorBlend(LLTexUnit::TBO_MULT, LLTexUnit::TBS_TEX_COLOR, LLTexUnit::TBS_VERT_COLOR);
-	gGL.getTexUnit(1)->setTextureAlphaBlend(LLTexUnit::TBO_REPLACE, LLTexUnit::TBS_PREV_ALPHA);
-
 	{
 		LLGLEnable blend(GL_BLEND);
 		drawLoop();
@@ -763,10 +721,6 @@ void LLDrawPoolTerrain::renderFull2TU()
 	gGL.translatef(-2.f, 0.f, 0.f);
 	gGL.matrixMode(LLRender::MM_MODELVIEW);
 
-	// Care about alpha only
-	gGL.getTexUnit(0)->setTextureColorBlend(LLTexUnit::TBO_REPLACE, LLTexUnit::TBS_PREV_COLOR);
-	gGL.getTexUnit(0)->setTextureAlphaBlend(LLTexUnit::TBO_REPLACE, LLTexUnit::TBS_TEX_ALPHA);
-
 	// Stage 1: Write detail3
 	gGL.getTexUnit(1)->bind(detail_texture3p);
 	gGL.getTexUnit(1)->enable(LLTexUnit::TT_TEXTURE);
@@ -779,9 +733,6 @@ void LLDrawPoolTerrain::renderFull2TU()
 	glTexGenfv(GL_S, GL_OBJECT_PLANE, tp0.mV);
 	glTexGenfv(GL_T, GL_OBJECT_PLANE, tp1.mV);
 
-	gGL.getTexUnit(1)->setTextureColorBlend(LLTexUnit::TBO_MULT, LLTexUnit::TBS_TEX_COLOR, LLTexUnit::TBS_VERT_COLOR);
-	gGL.getTexUnit(1)->setTextureAlphaBlend(LLTexUnit::TBO_REPLACE, LLTexUnit::TBS_PREV_ALPHA);
-
 	gGL.getTexUnit(0)->activate();
 	{
 		LLGLEnable blend(GL_BLEND);
@@ -814,7 +765,6 @@ void LLDrawPoolTerrain::renderFull2TU()
 	gGL.matrixMode(LLRender::MM_TEXTURE);
 	gGL.loadIdentity();
 	gGL.matrixMode(LLRender::MM_MODELVIEW);
-	gGL.getTexUnit(0)->setTextureBlendType(LLTexUnit::TB_MULT);
 }
 
 
@@ -837,22 +787,8 @@ void LLDrawPoolTerrain::renderSimple()
 	tp0.setVec(tscale, 0.f, 0.0f, -1.f*(origin_agent.mV[0]/256.f));
 	tp1.setVec(0.f, tscale, 0.0f, -1.f*(origin_agent.mV[1]/256.f));
 	
-	if (LLGLSLShader::sNoFixedFunction)
-	{
-		sShader->uniform4fv(LLShaderMgr::OBJECT_PLANE_S, 1, tp0.mV);
-		sShader->uniform4fv(LLShaderMgr::OBJECT_PLANE_T, 1, tp1.mV);
-	}
-	else
-	{
-		glEnable(GL_TEXTURE_GEN_S);
-		glEnable(GL_TEXTURE_GEN_T);
-		glTexGeni(GL_S, GL_TEXTURE_GEN_MODE, GL_OBJECT_LINEAR);
-		glTexGeni(GL_T, GL_TEXTURE_GEN_MODE, GL_OBJECT_LINEAR);
-		glTexGenfv(GL_S, GL_OBJECT_PLANE, tp0.mV);
-		glTexGenfv(GL_T, GL_OBJECT_PLANE, tp1.mV);
-	}
-
-	gGL.getTexUnit(0)->setTextureColorBlend(LLTexUnit::TBO_MULT, LLTexUnit::TBS_TEX_COLOR, LLTexUnit::TBS_VERT_COLOR);
+	sShader->uniform4fv(LLShaderMgr::OBJECT_PLANE_S, 1, tp0.mV);
+	sShader->uniform4fv(LLShaderMgr::OBJECT_PLANE_T, 1, tp1.mV);
 
 	drawLoop();
 
@@ -861,15 +797,9 @@ void LLDrawPoolTerrain::renderSimple()
 	
 	gGL.getTexUnit(0)->activate();
 	gGL.getTexUnit(0)->unbind(LLTexUnit::TT_TEXTURE);
-	if (!LLGLSLShader::sNoFixedFunction)
-	{
-		glDisable(GL_TEXTURE_GEN_S);
-		glDisable(GL_TEXTURE_GEN_T);
-	}
 	gGL.matrixMode(LLRender::MM_TEXTURE);
 	gGL.loadIdentity();
 	gGL.matrixMode(LLRender::MM_MODELVIEW);
-	gGL.getTexUnit(0)->setTextureBlendType(LLTexUnit::TB_MULT);
 }
 
 //============================================================================
diff --git a/indra/newview/lldrawpooltree.cpp b/indra/newview/lldrawpooltree.cpp
index 202f648e3f..ac957f1cbd 100644
--- a/indra/newview/lldrawpooltree.cpp
+++ b/indra/newview/lldrawpooltree.cpp
@@ -68,7 +68,7 @@ void LLDrawPoolTree::beginRenderPass(S32 pass)
 		shader = &gTreeProgram;
 	}
 
-	if (gPipeline.canUseVertexShaders())
+	if (gPipeline.shadersLoaded())
 	{
 		shader->bind();
 		shader->setMinimumAlpha(0.5f);
@@ -77,7 +77,7 @@ void LLDrawPoolTree::beginRenderPass(S32 pass)
 	else
 	{
 		gPipeline.enableLightsDynamic();
-		gGL.setAlphaRejectSettings(LLRender::CF_GREATER, 0.5f);
+		gGL.flush();
 	}
 }
 
@@ -90,7 +90,7 @@ void LLDrawPoolTree::render(S32 pass)
 		return;
 	}
 
-	LLGLState test(GL_ALPHA_TEST, LLGLSLShader::sNoFixedFunction ? 0 : 1);
+	LLGLState test(GL_ALPHA_TEST, 0);
 
 	gGL.getTexUnit(sDiffTex)->bind(mTexturep);
 				
@@ -134,7 +134,7 @@ void LLDrawPoolTree::endRenderPass(S32 pass)
 	
 	if (mShaderLevel <= 0)
 	{
-		gGL.setAlphaRejectSettings(LLRender::CF_DEFAULT);
+        gGL.flush();
 	}
 }
 
diff --git a/indra/newview/lldrawpoolwater.cpp b/indra/newview/lldrawpoolwater.cpp
index e2d3f67e46..590385472b 100644
--- a/indra/newview/lldrawpoolwater.cpp
+++ b/indra/newview/lldrawpoolwater.cpp
@@ -239,9 +239,6 @@ void LLDrawPoolWater::render(S32 pass)
 	glTexGenfv(GL_S, GL_OBJECT_PLANE, tp0);
 	glTexGenfv(GL_T, GL_OBJECT_PLANE, tp1);
 
-	gGL.getTexUnit(1)->setTextureColorBlend(LLTexUnit::TBO_MULT, LLTexUnit::TBS_TEX_COLOR, LLTexUnit::TBS_PREV_COLOR);
-	gGL.getTexUnit(1)->setTextureAlphaBlend(LLTexUnit::TBO_REPLACE, LLTexUnit::TBS_PREV_ALPHA);
-
 	gGL.getTexUnit(0)->activate();
 	
 	glClearStencil(1);
@@ -299,8 +296,6 @@ void LLDrawPoolWater::render(S32 pass)
 		gGL.matrixMode(LLRender::MM_MODELVIEW);
 		LLOverrideFaceColor overrid(this, 1.f, 1.f, 1.f,  0.5f*up_dot);
 
-		gGL.getTexUnit(0)->setTextureBlendType(LLTexUnit::TB_MULT);
-
 		for (std::vector<LLFace*>::iterator iter = mDrawFace.begin();
 			 iter != mDrawFace.end(); iter++)
 		{
@@ -317,8 +312,6 @@ void LLDrawPoolWater::render(S32 pass)
 			}
 		}
 
-		gGL.getTexUnit(0)->setTextureBlendType(LLTexUnit::TB_MULT);
-
 		gSky.mVOSkyp->getCubeMap()->disable();
 		
 		gGL.getTexUnit(0)->unbind(LLTexUnit::TT_TEXTURE);
@@ -336,8 +329,6 @@ void LLDrawPoolWater::render(S32 pass)
 		glStencilFunc(GL_NOTEQUAL, 0, 0xFFFFFFFF);
 		renderReflection(refl_face);
 	}
-
-	gGL.getTexUnit(0)->setTextureBlendType(LLTexUnit::TB_MULT);
 }
 
 // for low end hardware
@@ -352,20 +343,17 @@ void LLDrawPoolWater::renderOpaqueLegacyWater()
     }
 
 	LLGLSLShader* shader = NULL;
-	if (LLGLSLShader::sNoFixedFunction)
+	if (LLPipeline::sUnderWaterRender)
 	{
-		if (LLPipeline::sUnderWaterRender)
-		{
-			shader = &gObjectSimpleNonIndexedTexGenWaterProgram;
-		}
-		else
-		{
-			shader = &gObjectSimpleNonIndexedTexGenProgram;
-		}
-
-		shader->bind();
+		shader = &gObjectSimpleNonIndexedTexGenWaterProgram;
+	}
+	else
+	{
+		shader = &gObjectSimpleNonIndexedTexGenProgram;
 	}
 
+	shader->bind();
+
 	stop_glerror();
 
 	// Depth sorting and write to depth buffer
@@ -450,7 +438,6 @@ void LLDrawPoolWater::renderOpaqueLegacyWater()
 	}
 
 	gGL.getTexUnit(0)->unbind(LLTexUnit::TT_TEXTURE);
-	gGL.getTexUnit(0)->setTextureBlendType(LLTexUnit::TB_MULT);
 }
 
 
diff --git a/indra/newview/lldrawpoolwlsky.cpp b/indra/newview/lldrawpoolwlsky.cpp
index 8c8dc3f3d2..80a65947f6 100644
--- a/indra/newview/lldrawpoolwlsky.cpp
+++ b/indra/newview/lldrawpoolwlsky.cpp
@@ -266,33 +266,14 @@ void LLDrawPoolWLSky::renderStars(const LLVector3& camPosLocal) const
 	gGL.pushMatrix();
 	gGL.translatef(camPosLocal.mV[0], camPosLocal.mV[1], camPosLocal.mV[2]);
 	gGL.rotatef(gFrameTimeSeconds*0.01f, 0.f, 0.f, 1.f);
-	if (LLGLSLShader::sNoFixedFunction)
-	{
-		gCustomAlphaProgram.bind();
-		gCustomAlphaProgram.uniform1f(sCustomAlpha, 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);
-	}
+	gCustomAlphaProgram.bind();
+	gCustomAlphaProgram.uniform1f(sCustomAlpha, star_alpha.mV[3]);
 
 	gSky.mVOWLSkyp->drawStars();
 
     gGL.getTexUnit(0)->unbind(LLTexUnit::TT_TEXTURE);
-
 	gGL.popMatrix();
-
-	if (LLGLSLShader::sNoFixedFunction)
-	{
-		gCustomAlphaProgram.unbind();
-	}
-	else
-	{
-		// and disable the combiner states
-		gGL.getTexUnit(0)->setTextureBlendType(LLTexUnit::TB_MULT);
-	}
+	gCustomAlphaProgram.unbind();
 }
 
 void LLDrawPoolWLSky::renderStarsDeferred(const LLVector3& camPosLocal) const
@@ -479,7 +460,7 @@ void LLDrawPoolWLSky::renderHeavenlyBodies()
 	LLFace * face = gSky.mVOSkyp->mFace[LLVOSky::FACE_SUN];
 
     F32 blend_factor = LLEnvironment::instance().getCurrentSky()->getBlendFactor();
-    bool can_use_vertex_shaders = gPipeline.canUseVertexShaders();
+    bool can_use_vertex_shaders = gPipeline.shadersLoaded();
     bool can_use_windlight_shaders = gPipeline.canUseWindLightShaders();
 
 
diff --git a/indra/newview/llface.cpp b/indra/newview/llface.cpp
index 39ca7961d8..54a043482b 100644
--- a/indra/newview/llface.cpp
+++ b/indra/newview/llface.cpp
@@ -653,7 +653,7 @@ void LLFace::renderOneWireframe(const LLColor4 &color, F32 fogCfx, bool wirefram
             glFogf(GL_FOG_END, d*(1 + (LLViewerCamera::getInstance()->getView() / LLViewerCamera::getInstance()->getDefaultFOV())));
             glFogfv(GL_FOG_COLOR, fogCol.mV);
 
-            gGL.setAlphaRejectSettings(LLRender::CF_DEFAULT);
+            gGL.flush();
             {
                 gGL.diffuseColor4f(color.mV[VRED], color.mV[VGREEN], color.mV[VBLUE], 0.4f);
                 renderFace(mDrawablep, this);
diff --git a/indra/newview/llfloaterbvhpreview.cpp b/indra/newview/llfloaterbvhpreview.cpp
index 131d9b077b..4f0d8b8eb0 100644
--- a/indra/newview/llfloaterbvhpreview.cpp
+++ b/indra/newview/llfloaterbvhpreview.cpp
@@ -1088,10 +1088,7 @@ BOOL	LLPreviewAnimation::render()
 	gGL.pushMatrix();
 	gGL.loadIdentity();
 
-	if (LLGLSLShader::sNoFixedFunction)
-	{
-		gUIProgram.bind();
-	}
+	gUIProgram.bind();
 
 	LLGLSUIDefault def;
 	gGL.getTexUnit(0)->unbind(LLTexUnit::TT_TEXTURE);
diff --git a/indra/newview/llfloaterimagepreview.cpp b/indra/newview/llfloaterimagepreview.cpp
index 028c922a4d..89ba687d25 100644
--- a/indra/newview/llfloaterimagepreview.cpp
+++ b/indra/newview/llfloaterimagepreview.cpp
@@ -664,10 +664,7 @@ BOOL LLImagePreviewAvatar::render()
 	LLGLSUIDefault def;
 	gGL.color4f(0.15f, 0.2f, 0.3f, 1.f);
 
-	if (LLGLSLShader::sNoFixedFunction)
-	{
-		gUIProgram.bind();
-	}
+	gUIProgram.bind();
 
 	gl_rect_2d_simple( mFullWidth, mFullHeight );
 
@@ -866,10 +863,7 @@ BOOL LLImagePreviewSculpted::render()
 		
 	gGL.color4f(0.15f, 0.2f, 0.3f, 1.f);
 
-	if (LLGLSLShader::sNoFixedFunction)
-	{
-		gUIProgram.bind();
-	}
+	gUIProgram.bind();
 
 	gl_rect_2d_simple( mFullWidth, mFullHeight );
 	
@@ -903,10 +897,7 @@ BOOL LLImagePreviewSculpted::render()
 	
 	gPipeline.enableLightsAvatar();
 
-	if (LLGLSLShader::sNoFixedFunction)
-	{
-		gObjectPreviewProgram.bind();
-	}
+	gObjectPreviewProgram.bind();
 	gPipeline.enableLightsPreview();
 
 	gGL.pushMatrix();
@@ -920,10 +911,7 @@ BOOL LLImagePreviewSculpted::render()
 
 	gGL.popMatrix();
 
-	if (LLGLSLShader::sNoFixedFunction)
-	{
-		gObjectPreviewProgram.unbind();
-	}
+	gObjectPreviewProgram.unbind();
 
 	return TRUE;
 }
diff --git a/indra/newview/llglsandbox.cpp b/indra/newview/llglsandbox.cpp
index 91f314c115..a135ef0814 100644
--- a/indra/newview/llglsandbox.cpp
+++ b/indra/newview/llglsandbox.cpp
@@ -791,10 +791,7 @@ void LLViewerObjectList::renderObjectBeacons()
 
 	LLGLSUIDefault gls_ui;
 
-	if (LLGLSLShader::sNoFixedFunction)
-	{
-		gUIProgram.bind();
-	}
+	gUIProgram.bind();
 
 	{
 		gGL.getTexUnit(0)->unbind(LLTexUnit::TT_TEXTURE);
@@ -882,10 +879,7 @@ void LLViewerObjectList::renderObjectBeacons()
 void LLSky::renderSunMoonBeacons(const LLVector3& pos_agent, const LLVector3& direction, LLColor4 color)
 {
 	LLGLSUIDefault gls_ui;
-	if (LLGLSLShader::sNoFixedFunction)
-	{
-		gUIProgram.bind();
-	}
+	gUIProgram.bind();
 	gGL.getTexUnit(0)->unbind(LLTexUnit::TT_TEXTURE);
 
 	LLVector3 pos_end;
diff --git a/indra/newview/llhudnametag.cpp b/indra/newview/llhudnametag.cpp
index 55a4b5a457..8e296321d2 100644
--- a/indra/newview/llhudnametag.cpp
+++ b/indra/newview/llhudnametag.cpp
@@ -323,8 +323,6 @@ void LLHUDNameTag::renderText(BOOL for_select)
 		
 	// Render label
 	{
-		//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/llhudtext.cpp b/indra/newview/llhudtext.cpp
index 7c957ac712..9d8bf7f51c 100644
--- a/indra/newview/llhudtext.cpp
+++ b/indra/newview/llhudtext.cpp
@@ -188,9 +188,6 @@ void LLHUDText::renderText()
 	F32 y_offset = (F32)mOffsetY;
 		
 	// Render label
-	{
-		gGL.getTexUnit(0)->setTextureBlendType(LLTexUnit::TB_MULT);
-	}
 
 	// Render text
 	{
@@ -573,7 +570,6 @@ void LLHUDText::renderAllHUD()
 {
 	LLGLState::checkStates();
 	LLGLState::checkTextureChannels();
-	LLGLState::checkClientArrays();
 
 	{
 		LLGLEnable color_mat(GL_COLOR_MATERIAL);
@@ -591,7 +587,6 @@ void LLHUDText::renderAllHUD()
 
 	LLGLState::checkStates();
 	LLGLState::checkTextureChannels();
-	LLGLState::checkClientArrays();
 }
 
 void LLHUDText::shiftAll(const LLVector3& offset)
diff --git a/indra/newview/lllegacyatmospherics.cpp b/indra/newview/lllegacyatmospherics.cpp
index 238e9fe0e1..1364067949 100644
--- a/indra/newview/lllegacyatmospherics.cpp
+++ b/indra/newview/lllegacyatmospherics.cpp
@@ -383,12 +383,6 @@ void LLAtmospherics::updateFog(const F32 distance, const LLVector3& tosun_in)
 
 	if (!gPipeline.hasRenderDebugFeatureMask(LLPipeline::RENDER_DEBUG_FEATURE_FOG))
 	{
-		if (!LLGLSLShader::sNoFixedFunction)
-		{
-			glFogf(GL_FOG_DENSITY, 0);
-			glFogfv(GL_FOG_COLOR, (F32 *) &LLColor4::white.mV);
-			glFogf(GL_FOG_END, 1000000.f);
-		}
 		return;
 	}
 
@@ -484,10 +478,6 @@ void LLAtmospherics::updateFog(const F32 distance, const LLVector3& tosun_in)
 	if (camera_height > water_height)
 	{
 		LLColor4 fog(render_fog_color);
-		if (!LLGLSLShader::sNoFixedFunction)
-		{
-			glFogfv(GL_FOG_COLOR, fog.mV);
-		}
 		mGLFogCol = fog;
 
 		if (hide_clip_plane)
@@ -495,19 +485,11 @@ void LLAtmospherics::updateFog(const F32 distance, const LLVector3& tosun_in)
 			// For now, set the density to extend to the cull distance.
 			const F32 f_log = 2.14596602628934723963618357029f; // sqrt(fabs(log(0.01f)))
 			fog_density = f_log/fog_distance;
-			if (!LLGLSLShader::sNoFixedFunction)
-			{
-				glFogi(GL_FOG_MODE, GL_EXP2);
-			}
 		}
 		else
 		{
 			const F32 f_log = 4.6051701859880913680359829093687f; // fabs(log(0.01f))
 			fog_density = (f_log)/fog_distance;
-			if (!LLGLSLShader::sNoFixedFunction)
-			{
-				glFogi(GL_FOG_MODE, GL_EXP);
-			}
 		}
 	}
 	else
@@ -533,12 +515,6 @@ void LLAtmospherics::updateFog(const F32 distance, const LLVector3& tosun_in)
 
 		// set the density based on what the shaders use
 		fog_density = water_fog_density * gSavedSettings.getF32("WaterGLFogDensityScale");
-
-		if (!LLGLSLShader::sNoFixedFunction)
-		{
-			glFogfv(GL_FOG_COLOR, (F32 *) &fogCol.mV);
-			glFogi(GL_FOG_MODE, GL_EXP2);
-		}
 	}
 
 	mFogColor = sky_fog_color;
@@ -546,13 +522,6 @@ void LLAtmospherics::updateFog(const F32 distance, const LLVector3& tosun_in)
 
 	LLDrawPoolWater::sWaterFogEnd = fog_distance*2.2f;
 
-	if (!LLGLSLShader::sNoFixedFunction)
-	{
-		LLGLSFog gls_fog;
-		glFogf(GL_FOG_END, fog_distance*2.2f);
-		glFogf(GL_FOG_DENSITY, fog_density);
-		glHint(GL_FOG_HINT, GL_NICEST);
-	}
 	stop_glerror();
 }
 
diff --git a/indra/newview/llmaniprotate.cpp b/indra/newview/llmaniprotate.cpp
index 7c942e8b53..452762b09d 100644
--- a/indra/newview/llmaniprotate.cpp
+++ b/indra/newview/llmaniprotate.cpp
@@ -157,10 +157,7 @@ void LLManipRotate::render()
 		}
 		else
 		{
-			if (LLGLSLShader::sNoFixedFunction)
-			{
-				gDebugProgram.bind();
-			}
+			gDebugProgram.bind();
 
 			LLGLEnable cull_face(GL_CULL_FACE);
 			LLGLDepthTest gls_depth(GL_FALSE);
@@ -213,10 +210,7 @@ void LLManipRotate::render()
 			}
 			gGL.popMatrix();
 
-			if (LLGLSLShader::sNoFixedFunction)
-			{
-				gUIProgram.bind();
-			}
+			gUIProgram.bind();
 		}
 		
 		gGL.translatef( center.mV[VX], center.mV[VY], center.mV[VZ] );
@@ -234,10 +228,7 @@ void LLManipRotate::render()
 		gGL.rotatef(angle_radians * RAD_TO_DEG, x, y, z);
 
 
-		if (LLGLSLShader::sNoFixedFunction)
-		{
-			gDebugProgram.bind();
-		}
+		gDebugProgram.bind();
 
 		if (mManipPart == LL_ROT_Z)
 		{
@@ -355,11 +346,7 @@ void LLManipRotate::render()
 			
 		}
 
-		if (LLGLSLShader::sNoFixedFunction)
-		{
-			gUIProgram.bind();
-		}
-		
+		gUIProgram.bind();
 	}
 	gGL.popMatrix();
 	gGL.popMatrix();
diff --git a/indra/newview/llmaniptranslate.cpp b/indra/newview/llmaniptranslate.cpp
index 8736d3b51f..0b2a1ef389 100644
--- a/indra/newview/llmaniptranslate.cpp
+++ b/indra/newview/llmaniptranslate.cpp
@@ -1565,11 +1565,6 @@ void LLManipTranslate::renderSnapGuides()
 					LLGLEnable stipple(GL_LINE_STIPPLE);
 					gGL.flush();
 
-					if (!LLGLSLShader::sNoFixedFunction)
-					{
-						glLineStipple(1, 0x3333);
-					}
-		
 					switch (mManipPart)
 					{
 					  case LL_YZ_PLANE:
@@ -1633,7 +1628,7 @@ void LLManipTranslate::highlightIntersection(LLVector3 normal,
 											 LLQuaternion grid_rotation, 
 											 LLColor4 inner_color)
 {
-	if (!gSavedSettings.getBOOL("GridCrossSections") || !LLGLSLShader::sNoFixedFunction)
+	if (!gSavedSettings.getBOOL("GridCrossSections"))
 	{
 		return;
 	}
diff --git a/indra/newview/llmodelpreview.cpp b/indra/newview/llmodelpreview.cpp
index d7e9e234ca..566a89e24d 100644
--- a/indra/newview/llmodelpreview.cpp
+++ b/indra/newview/llmodelpreview.cpp
@@ -2886,8 +2886,6 @@ BOOL LLModelPreview::render()
     LLMutexLock lock(this);
     mNeedsUpdate = FALSE;
 
-    bool use_shaders = LLGLSLShader::sNoFixedFunction;
-
     bool edges = mViewOption["show_edges"];
     bool joint_overrides = mViewOption["show_joint_overrides"];
     bool joint_positions = mViewOption["show_joint_positions"];
@@ -2905,10 +2903,8 @@ BOOL LLModelPreview::render()
     LLGLDisable fog(GL_FOG);
 
     {
-        if (use_shaders)
-        {
-            gUIProgram.bind();
-        }
+        gUIProgram.bind();
+
         //clear background to grey
         gGL.matrixMode(LLRender::MM_PROJECTION);
         gGL.pushMatrix();
@@ -2927,10 +2923,7 @@ BOOL LLModelPreview::render()
 
         gGL.matrixMode(LLRender::MM_MODELVIEW);
         gGL.popMatrix();
-        if (use_shaders)
-        {
-            gUIProgram.unbind();
-        }
+        gUIProgram.unbind();
     }
 
     LLFloaterModelPreview* fmp = LLFloaterModelPreview::sInstance;
@@ -3083,10 +3076,7 @@ BOOL LLModelPreview::render()
         refresh();
     }
 
-    if (use_shaders)
-    {
-        gObjectPreviewProgram.bind();
-    }
+    gObjectPreviewProgram.bind();
 
     gGL.loadIdentity();
     gPipeline.enableLightsPreview();
@@ -3587,10 +3577,7 @@ BOOL LLModelPreview::render()
         }
     }
 
-    if (use_shaders)
-    {
-        gObjectPreviewProgram.unbind();
-    }
+    gObjectPreviewProgram.unbind();
 
     gGL.popMatrix();
 
diff --git a/indra/newview/llnetmap.cpp b/indra/newview/llnetmap.cpp
index 111b45612e..937f36b6fc 100644
--- a/indra/newview/llnetmap.cpp
+++ b/indra/newview/llnetmap.cpp
@@ -259,7 +259,7 @@ void LLNetMap::draw()
 			gGL.end();
 
 			// Draw water
-			gGL.setAlphaRejectSettings(LLRender::CF_GREATER, ABOVE_WATERLINE_ALPHA / 255.f);
+            gGL.flush();
 			{
 				if (regionp->getLand().getWaterTexture())
 				{
@@ -276,7 +276,7 @@ void LLNetMap::draw()
 					gGL.end();
 				}
 			}
-			gGL.setAlphaRejectSettings(LLRender::CF_DEFAULT);
+            gGL.flush();
 		}
 
 		// Redraw object layer periodically
diff --git a/indra/newview/llscenemonitor.cpp b/indra/newview/llscenemonitor.cpp
index 177bc84cee..2e44dc1459 100644
--- a/indra/newview/llscenemonitor.cpp
+++ b/indra/newview/llscenemonitor.cpp
@@ -271,7 +271,7 @@ void LLSceneMonitor::capture()
 	static LLCachedControl<F32>  scene_load_sample_time(gSavedSettings, "SceneLoadingMonitorSampleTime");
 	static bool force_capture = true;
 
-	bool enabled = LLGLSLShader::sNoFixedFunction && (monitor_enabled || mDebugViewerVisible);
+	bool enabled = monitor_enabled || mDebugViewerVisible;
 	if(mEnabled != enabled)
 	{
 		if(mEnabled)
@@ -719,13 +719,6 @@ void LLSceneMonitorView::onTeleportFinished()
 
 void LLSceneMonitorView::onVisibilityChange(BOOL visible)
 {
-	if (!LLGLSLShader::sNoFixedFunction && visible)
-	{
-		visible = false;
-		// keep Scene monitor and its view in sycn
-		setVisible(false);
-		LL_WARNS("SceneMonitor") << "Incompatible graphical settings, Scene Monitor can't be turned on" << LL_ENDL; 
-	}
 	LLSceneMonitor::getInstance()->setDebugViewerVisible(visible);
 }
 
diff --git a/indra/newview/llselectmgr.cpp b/indra/newview/llselectmgr.cpp
index 6f136e50e0..b3d3e9e0da 100644
--- a/indra/newview/llselectmgr.cpp
+++ b/indra/newview/llselectmgr.cpp
@@ -5894,8 +5894,6 @@ void LLSelectMgr::updateSilhouettes()
 		LLViewerObject* objectp = *iter;
 		objectp->clearChanged(LLXform::MOVED | LLXform::SILHOUETTE);
 	}
-	
-	//gGL.setAlphaRejectSettings(LLRender::CF_DEFAULT);
 }
 
 void LLSelectMgr::updateSelectionSilhouette(LLObjectSelectionHandle object_handle, S32& num_sils_genned, std::vector<LLViewerObject*>& changed_objects)
@@ -6620,7 +6618,7 @@ void LLSelectNode::renderOneSilhouette(const LLColor4 &color)
 			glFogfv(GL_FOG_COLOR, fogCol.mV);
 
 			LLGLDepthTest gls_depth(GL_TRUE, GL_FALSE, GL_GEQUAL);
-			gGL.setAlphaRejectSettings(LLRender::CF_DEFAULT);
+            gGL.flush();
 			gGL.begin(LLRender::LINES);
 			{
 				gGL.color4f(color.mV[VRED], color.mV[VGREEN], color.mV[VBLUE], 0.4f);
diff --git a/indra/newview/llspatialpartition.cpp b/indra/newview/llspatialpartition.cpp
index 332fa73944..25d6106361 100644
--- a/indra/newview/llspatialpartition.cpp
+++ b/indra/newview/llspatialpartition.cpp
@@ -2612,7 +2612,7 @@ void renderPhysicsShape(LLDrawable* drawable, LLVOVolume* volume)
 				gGL.diffuseColor4fv(line_color.mV);
 				LLVertexBuffer::unbind();
 
-				llassert(!LLGLSLShader::sNoFixedFunction || LLGLSLShader::sCurBoundShader != 0);
+				llassert(LLGLSLShader::sCurBoundShader != 0);
 				
                 LLVertexBuffer::drawElements(LLRender::TRIANGLES, phys_volume->mHullPoints, NULL, phys_volume->mNumHullIndices, phys_volume->mHullIndices);
 				
@@ -2694,7 +2694,7 @@ 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);
+			llassert(LLGLSLShader::sCurBoundShader != 0);
 			LLVertexBuffer::unbind();
 			glVertexPointer(3, GL_FLOAT, 16, phys_volume->mHullPoints);
 			gGL.diffuseColor4fv(line_color.mV);
@@ -3796,10 +3796,7 @@ void LLSpatialPartition::renderDebug()
 		return;
 	}
 	
-	if (LLGLSLShader::sNoFixedFunction)
-	{
-		gDebugProgram.bind();
-	}
+	gDebugProgram.bind();
 
 	if (gPipeline.hasRenderDebugMask(LLPipeline::RENDER_DEBUG_TEXTURE_PRIORITY))
 	{
@@ -3848,10 +3845,7 @@ void LLSpatialPartition::renderDebug()
 			glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
 		}
 	}
-	if (LLGLSLShader::sNoFixedFunction)
-	{
-		gDebugProgram.unbind();
-	}
+	gDebugProgram.unbind();
 }
 
 void LLSpatialGroup::drawObjectBox(LLColor4 col)
diff --git a/indra/newview/lltoolmorph.cpp b/indra/newview/lltoolmorph.cpp
index 06a2caf75b..b2e8348ffd 100644
--- a/indra/newview/lltoolmorph.cpp
+++ b/indra/newview/lltoolmorph.cpp
@@ -195,10 +195,7 @@ BOOL LLVisualParamHint::render()
 	gGL.pushMatrix();
 	gGL.loadIdentity();
 
-	if (LLGLSLShader::sNoFixedFunction)
-	{
-		gUIProgram.bind();
-	}
+	gUIProgram.bind();
 
 	LLGLSUIDefault gls_ui;
 	//LLGLState::verify(TRUE);
@@ -247,11 +244,11 @@ BOOL LLVisualParamHint::render()
 	{
 		LLDrawPoolAvatar *avatarPoolp = (LLDrawPoolAvatar *)gAgentAvatarp->mDrawable->getFace(0)->getPool();
 		LLGLDepthTest gls_depth(GL_TRUE, GL_TRUE);
-		gGL.setAlphaRejectSettings(LLRender::CF_ALWAYS);
+        gGL.flush();
 		gGL.setSceneBlendType(LLRender::BT_REPLACE);
 		avatarPoolp->renderAvatars(gAgentAvatarp);  // renders only one avatar
 		gGL.setSceneBlendType(LLRender::BT_ALPHA);
-		gGL.setAlphaRejectSettings(LLRender::CF_DEFAULT);
+        gGL.flush();
 	}
 	gAgentAvatarp->setVisualParamWeight(mVisualParam->getID(), mLastParamWeight);
 	mWearablePtr->setVisualParamWeight(mVisualParam->getID(), mLastParamWeight);
diff --git a/indra/newview/llviewercontrol.cpp b/indra/newview/llviewercontrol.cpp
index 3c6c9c905a..19b25a01fe 100644
--- a/indra/newview/llviewercontrol.cpp
+++ b/indra/newview/llviewercontrol.cpp
@@ -388,7 +388,7 @@ static bool handleJoystickChanged(const LLSD& newvalue)
 
 static bool handleUseOcclusionChanged(const LLSD& newvalue)
 {
-	LLPipeline::sUseOcclusion = (newvalue.asBoolean() && gGLManager.mHasOcclusionQuery && LLGLSLShader::sNoFixedFunction
+	LLPipeline::sUseOcclusion = (newvalue.asBoolean() && gGLManager.mHasOcclusionQuery
 		&& LLFeatureManager::getInstance()->isFeatureAvailable("UseOcclusion") && !gUseWireframe) ? 2 : 0;
 	return true;
 }
diff --git a/indra/newview/llviewerdisplay.cpp b/indra/newview/llviewerdisplay.cpp
index 38ac4275cf..046187cf4f 100644
--- a/indra/newview/llviewerdisplay.cpp
+++ b/indra/newview/llviewerdisplay.cpp
@@ -166,8 +166,6 @@ void display_startup()
 
 	if (gViewerWindow)
 	gViewerWindow->setup2DRender();
-	gGL.getTexUnit(0)->setTextureBlendType(LLTexUnit::TB_MULT);
-
 	gGL.color4f(1,1,1,1);
 	if (gViewerWindow)
 	gViewerWindow->draw();
@@ -717,7 +715,6 @@ void display(BOOL rebuild, F32 zoom_factor, int subfield, BOOL for_snapshot)
 
 		LLGLState::checkStates();
 		LLGLState::checkTextureChannels();
-		LLGLState::checkClientArrays();
 
 		static LLCullResult result;
 		LLViewerCamera::sCurCameraID = LLViewerCamera::CAMERA_WORLD;
@@ -727,8 +724,7 @@ void display(BOOL rebuild, F32 zoom_factor, int subfield, BOOL for_snapshot)
 
 		LLGLState::checkStates();
 		LLGLState::checkTextureChannels();
-		LLGLState::checkClientArrays();
-
+		
 		LLAppViewer::instance()->pingMainloopTimeout("Display:Swap");
 		
 		{ 
@@ -744,7 +740,6 @@ void display(BOOL rebuild, F32 zoom_factor, int subfield, BOOL for_snapshot)
 
 			LLGLState::checkStates();
 			LLGLState::checkTextureChannels();
-			LLGLState::checkClientArrays();
 
 			if (!for_snapshot)
 			{
@@ -758,7 +753,6 @@ void display(BOOL rebuild, F32 zoom_factor, int subfield, BOOL for_snapshot)
 
 				LLGLState::checkStates();
 				LLGLState::checkTextureChannels();
-				LLGLState::checkClientArrays();
 
 				glh::matrix4f proj = get_current_projection();
 				glh::matrix4f mod = get_current_modelview();
@@ -777,14 +771,12 @@ void display(BOOL rebuild, F32 zoom_factor, int subfield, BOOL for_snapshot)
 
 				LLGLState::checkStates();
 				LLGLState::checkTextureChannels();
-				LLGLState::checkClientArrays();
 
 			}
 			glClear(GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);
 		}
 
 		LLGLState::checkStates();
-		LLGLState::checkClientArrays();
 
 		//if (!for_snapshot)
 		{
@@ -796,7 +788,6 @@ void display(BOOL rebuild, F32 zoom_factor, int subfield, BOOL for_snapshot)
 		}
 
 		LLGLState::checkStates();
-		LLGLState::checkClientArrays();
 
 		//////////////////////////////////////
 		//
@@ -836,7 +827,6 @@ void display(BOOL rebuild, F32 zoom_factor, int subfield, BOOL for_snapshot)
 		}
 
 		LLGLState::checkStates();
-		LLGLState::checkClientArrays();
 
 		///////////////////////////////////
 		//
@@ -868,7 +858,6 @@ void display(BOOL rebuild, F32 zoom_factor, int subfield, BOOL for_snapshot)
 		LLSceneMonitor::getInstance()->fetchQueryResult();
 		
 		LLGLState::checkStates();
-		LLGLState::checkClientArrays();
 
 		LLPipeline::sUseOcclusion = occlusion;
 
@@ -927,7 +916,6 @@ void display(BOOL rebuild, F32 zoom_factor, int subfield, BOOL for_snapshot)
 		LLPipeline::sUnderWaterRender = LLViewerCamera::getInstance()->cameraUnderWater() ? TRUE : FALSE;
 
 		LLGLState::checkStates();
-		LLGLState::checkClientArrays();
 
 		stop_glerror();
 
@@ -960,7 +948,7 @@ void display(BOOL rebuild, F32 zoom_factor, int subfield, BOOL for_snapshot)
 			LL_PROFILE_ZONE_NAMED("display - 4")
 			LLViewerCamera::sCurCameraID = LLViewerCamera::CAMERA_WORLD;
 
-			if (gSavedSettings.getBOOL("RenderDepthPrePass") && LLGLSLShader::sNoFixedFunction)
+			if (gSavedSettings.getBOOL("RenderDepthPrePass"))
 			{
 				gGL.setColorMask(false, false);
 
@@ -1450,10 +1438,7 @@ void render_ui_3d()
 
 	stop_glerror();
 	
-	if (LLGLSLShader::sNoFixedFunction)
-	{
-		gUIProgram.bind();
-	}
+	gUIProgram.bind();
 
 	// Coordinate axes
 	if (gSavedSettings.getBOOL("ShowAxes"))
@@ -1493,7 +1478,6 @@ void render_ui_2d()
 	}
 
 	stop_glerror();
-	//gGL.getTexUnit(0)->setTextureBlendType(LLTexUnit::TB_MULT);
 
 	// render outline for HUD
 	if (isAgentAvatarValid() && gAgentCamera.mHUDCurZoom < 0.98f)
@@ -1583,10 +1567,7 @@ void render_ui_2d()
 
 void render_disconnected_background()
 {
-	if (LLGLSLShader::sNoFixedFunction)
-	{
-		gUIProgram.bind();
-	}
+	gUIProgram.bind();
 
 	gGL.color4f(1,1,1,1);
 	if (!gDisconnectedImagep && gDisconnected)
@@ -1658,11 +1639,7 @@ void render_disconnected_background()
 	}
 	gGL.flush();
 
-	if (LLGLSLShader::sNoFixedFunction)
-	{
-		gUIProgram.unbind();
-	}
-
+	gUIProgram.unbind();
 }
 
 void display_cleanup()
diff --git a/indra/newview/llviewerjointmesh.cpp b/indra/newview/llviewerjointmesh.cpp
index 3e385a46e4..f3b0e82b3a 100644
--- a/indra/newview/llviewerjointmesh.cpp
+++ b/indra/newview/llviewerjointmesh.cpp
@@ -225,7 +225,7 @@ U32 LLViewerJointMesh::drawShape( F32 pixelArea, BOOL first_pass, BOOL is_dummy)
 	if (!mValid || !mMesh || !mFace || !mVisible || 
 		!mFace->getVertexBuffer() ||
 		mMesh->getNumFaces() == 0 ||
-		(LLGLSLShader::sNoFixedFunction && LLGLSLShader::sCurBoundShaderPtr == NULL))
+		LLGLSLShader::sCurBoundShaderPtr == NULL)
 	{
 		return 0;
 	}
@@ -246,7 +246,7 @@ U32 LLViewerJointMesh::drawShape( F32 pixelArea, BOOL first_pass, BOOL is_dummy)
 
 	stop_glerror();
 	
-	LLGLSSpecular specular(LLColor4(1.f,1.f,1.f,1.f), (mFace->getPool()->getShaderLevel() > 0 || LLGLSLShader::sNoFixedFunction) ? 0.f : mShiny);
+	LLGLSSpecular specular(LLColor4(1.f,1.f,1.f,1.f), 0.f);
 
 	//----------------------------------------------------------------
 	// setup current texture
@@ -265,7 +265,6 @@ U32 LLViewerJointMesh::drawShape( F32 pixelArea, BOOL first_pass, BOOL is_dummy)
 		else
 		{
 			gGL.diffuseColor4f(0.7f, 0.6f, 0.3f, 1.f);
-			gGL.getTexUnit(diffuse_channel)->setTextureColorBlend(LLTexUnit::TBO_LERP_TEX_ALPHA, LLTexUnit::TBS_TEX_COLOR, LLTexUnit::TBS_PREV_COLOR);
 		}
 	}
 	else if( !is_dummy && layerset )
@@ -328,11 +327,6 @@ U32 LLViewerJointMesh::drawShape( F32 pixelArea, BOOL first_pass, BOOL is_dummy)
 
 	triangle_count += count;
 	
-	if (mTestImageName)
-	{
-		gGL.getTexUnit(diffuse_channel)->setTextureBlendType(LLTexUnit::TB_MULT);
-	}
-
 	return triangle_count;
 }
 
diff --git a/indra/newview/llviewershadermgr.cpp b/indra/newview/llviewershadermgr.cpp
index b626a8ebea..8669abf284 100644
--- a/indra/newview/llviewershadermgr.cpp
+++ b/indra/newview/llviewershadermgr.cpp
@@ -471,7 +471,6 @@ void LLViewerShaderMgr::setShaders()
     }
     mMaxAvatarShaderLevel = 0;
 
-    LLGLSLShader::sNoFixedFunction = false;
     LLVertexBuffer::unbind();
 
     llassert((gGLManager.mGLSLVersionMajor > 1 || gGLManager.mGLSLVersionMinor >= 10));
@@ -482,9 +481,6 @@ void LLViewerShaderMgr::setShaders()
     bool doingWindLight          = hasWindLightShaders && gSavedSettings.getBOOL("WindLightUseAtmosShaders");
     bool useRenderDeferred       = doingWindLight && canRenderDeferred && gSavedSettings.getBOOL("RenderDeferred");
 
-    //using shaders, disable fixed function
-    LLGLSLShader::sNoFixedFunction = true;
-
     S32 light_class = 3;
     S32 interface_class = 2;
     S32 env_class = 2;
@@ -556,184 +552,168 @@ void LLViewerShaderMgr::setShaders()
     }
     else
     {
-        LL_WARNS() << "Failed to load basic shaders." << LL_ENDL;
+        LL_ERRS() << "Unable to load basic shaders, verify graphics driver installed and current." << LL_ENDL;
         llassert(loaded);
+        reentrance = false; // For hygiene only, re-try probably helps nothing 
+        return;
     }
 
+    gPipeline.mShadersLoaded = true;
+
+    // Load all shaders to set max levels
+    loaded = loadShadersEnvironment();
+
     if (loaded)
     {
-        gPipeline.mVertexShadersEnabled = TRUE;
-        gPipeline.mVertexShadersLoaded = 1;
-
-        // Load all shaders to set max levels
-        loaded = loadShadersEnvironment();
+        LL_INFOS() << "Loaded environment shaders." << LL_ENDL;
+    }
+    else
+    {
+        LL_WARNS() << "Failed to load environment shaders." << LL_ENDL;
+        llassert(loaded);
+    }
 
+    if (loaded)
+    {
+        loaded = loadShadersWater();
         if (loaded)
         {
-            LL_INFOS() << "Loaded environment shaders." << LL_ENDL;
+            LL_INFOS() << "Loaded water shaders." << LL_ENDL;
         }
         else
         {
-            LL_WARNS() << "Failed to load environment shaders." << LL_ENDL;
+            LL_WARNS() << "Failed to load water shaders." << LL_ENDL;
             llassert(loaded);
         }
+    }
 
+    if (loaded)
+    {
+        loaded = loadShadersWindLight();
         if (loaded)
         {
-            loaded = loadShadersWater();
-            if (loaded)
-            {
-                LL_INFOS() << "Loaded water shaders." << LL_ENDL;
-            }
-            else
-            {
-                LL_WARNS() << "Failed to load water shaders." << LL_ENDL;
-                llassert(loaded);
-            }
+            LL_INFOS() << "Loaded windlight shaders." << LL_ENDL;
         }
-
-        if (loaded)
+        else
         {
-            loaded = loadShadersWindLight();
-            if (loaded)
-            {
-                LL_INFOS() << "Loaded windlight shaders." << LL_ENDL;
-            }
-            else
-            {
-                LL_WARNS() << "Failed to load windlight shaders." << LL_ENDL;
-                llassert(loaded);
-            }
+            LL_WARNS() << "Failed to load windlight shaders." << LL_ENDL;
+            llassert(loaded);
         }
+    }
 
+    if (loaded)
+    {
+        loaded = loadShadersEffects();
         if (loaded)
         {
-            loaded = loadShadersEffects();
-            if (loaded)
-            {
-                LL_INFOS() << "Loaded effects shaders." << LL_ENDL;
-            }
-            else
-            {
-                LL_WARNS() << "Failed to load effects shaders." << LL_ENDL;
-                llassert(loaded);
-            }
+            LL_INFOS() << "Loaded effects shaders." << LL_ENDL;
         }
-
-        if (loaded)
+        else
         {
-            loaded = loadShadersInterface();
-            if (loaded)
-            {
-                LL_INFOS() << "Loaded interface shaders." << LL_ENDL;
-            }
-            else
-            {
-                LL_WARNS() << "Failed to load interface shaders." << LL_ENDL;
-                llassert(loaded);
-            }
+            LL_WARNS() << "Failed to load effects shaders." << LL_ENDL;
+            llassert(loaded);
         }
+    }
 
+    if (loaded)
+    {
+        loaded = loadShadersInterface();
         if (loaded)
-
         {
-            loaded = loadTransformShaders();
-            if (loaded)
-            {
-                LL_INFOS() << "Loaded transform shaders." << LL_ENDL;
-            }
-            else
-            {
-                LL_WARNS() << "Failed to load transform shaders." << LL_ENDL;
-                llassert(loaded);
-            }
+            LL_INFOS() << "Loaded interface shaders." << LL_ENDL;
+        }
+        else
+        {
+            LL_WARNS() << "Failed to load interface shaders." << LL_ENDL;
+            llassert(loaded);
         }
+    }
+
+    if (loaded)
 
+    {
+        loaded = loadTransformShaders();
         if (loaded)
         {
-            // Load max avatar shaders to set the max level
-            mShaderLevel[SHADER_AVATAR] = 3;
-            mMaxAvatarShaderLevel = 3;
+            LL_INFOS() << "Loaded transform shaders." << LL_ENDL;
+        }
+        else
+        {
+            LL_WARNS() << "Failed to load transform shaders." << LL_ENDL;
+            llassert(loaded);
+        }
+    }
+
+    if (loaded)
+    {
+        // Load max avatar shaders to set the max level
+        mShaderLevel[SHADER_AVATAR] = 3;
+        mMaxAvatarShaderLevel = 3;
                 
             if (loadShadersObject())
-            { //hardware skinning is enabled and rigged attachment shaders loaded correctly
-                BOOL avatar_cloth = gSavedSettings.getBOOL("RenderAvatarCloth");
+        { //hardware skinning is enabled and rigged attachment shaders loaded correctly
+            BOOL avatar_cloth = gSavedSettings.getBOOL("RenderAvatarCloth");
 
-                // cloth is a class3 shader
-                S32 avatar_class = avatar_cloth ? 3 : 1;
+            // cloth is a class3 shader
+            S32 avatar_class = avatar_cloth ? 3 : 1;
                 
-                // Set the actual level
-                mShaderLevel[SHADER_AVATAR] = avatar_class;
+            // Set the actual level
+            mShaderLevel[SHADER_AVATAR] = avatar_class;
 
-                loaded = loadShadersAvatar();
-                llassert(loaded);
+            loaded = loadShadersAvatar();
+            llassert(loaded);
 
-                if (mShaderLevel[SHADER_AVATAR] != avatar_class)
+            if (mShaderLevel[SHADER_AVATAR] != avatar_class)
+            {
+                if(llmax(mShaderLevel[SHADER_AVATAR]-1,0) >= 3)
                 {
-                    if(llmax(mShaderLevel[SHADER_AVATAR]-1,0) >= 3)
-                    {
-                        avatar_cloth = true;
-                    }
-                    else
-                    {
-                        avatar_cloth = false;
-                    }
-                    gSavedSettings.setBOOL("RenderAvatarCloth", avatar_cloth);
+                    avatar_cloth = true;
                 }
+                else
+                {
+                    avatar_cloth = false;
+                }
+                gSavedSettings.setBOOL("RenderAvatarCloth", avatar_cloth);
             }
-            else
-            { //hardware skinning not possible, neither is deferred rendering
-                mShaderLevel[SHADER_AVATAR] = 0;
-                mShaderLevel[SHADER_DEFERRED] = 0;
+        }
+        else
+        { //hardware skinning not possible, neither is deferred rendering
+            mShaderLevel[SHADER_AVATAR] = 0;
+            mShaderLevel[SHADER_DEFERRED] = 0;
 
                 gSavedSettings.setBOOL("RenderDeferred", FALSE);
                 gSavedSettings.setBOOL("RenderAvatarCloth", FALSE);
 
-                loadShadersAvatar(); // unloads
+            loadShadersAvatar(); // unloads
 
-                loaded = loadShadersObject();
-                llassert(loaded);
-            }
+            loaded = loadShadersObject();
+            llassert(loaded);
         }
+    }
 
-        if (!loaded)
-        { //some shader absolutely could not load, try to fall back to a simpler setting
-            if (gSavedSettings.getBOOL("WindLightUseAtmosShaders"))
-            { //disable windlight and try again
-                gSavedSettings.setBOOL("WindLightUseAtmosShaders", FALSE);
-                LL_WARNS() << "Falling back to no windlight shaders." << LL_ENDL;
-                reentrance = false;
-                setShaders();
-                return;
-            }
-        }       
-
-        llassert(loaded);
-
-        if (loaded && !loadShadersDeferred())
-        { //everything else succeeded but deferred failed, disable deferred and try again
-            gSavedSettings.setBOOL("RenderDeferred", FALSE);
-            LL_WARNS() << "Falling back to no deferred shaders." << LL_ENDL;
+    if (!loaded)
+    { //some shader absolutely could not load, try to fall back to a simpler setting
+        if (gSavedSettings.getBOOL("WindLightUseAtmosShaders"))
+        { //disable windlight and try again
+            gSavedSettings.setBOOL("WindLightUseAtmosShaders", FALSE);
+            LL_WARNS() << "Falling back to no windlight shaders." << LL_ENDL;
             reentrance = false;
             setShaders();
             return;
         }
+    }       
+
+    llassert(loaded);
+
+    if (loaded && !loadShadersDeferred())
+    { //everything else succeeded but deferred failed, disable deferred and try again
+        gSavedSettings.setBOOL("RenderDeferred", FALSE);
+        LL_WARNS() << "Falling back to no deferred shaders." << LL_ENDL;
+        reentrance = false;
+        setShaders();
+        return;
     }
-    else
-    {
-        LLGLSLShader::sNoFixedFunction = false;
-        gPipeline.mVertexShadersEnabled = FALSE;
-        gPipeline.mVertexShadersLoaded = 0;
-        mShaderLevel[SHADER_LIGHTING] = 0;
-        mShaderLevel[SHADER_INTERFACE] = 0;
-        mShaderLevel[SHADER_ENVIRONMENT] = 0;
-        mShaderLevel[SHADER_WATER] = 0;
-        mShaderLevel[SHADER_OBJECT] = 0;
-        mShaderLevel[SHADER_EFFECT] = 0;
-        mShaderLevel[SHADER_WINDLIGHT] = 0;
-        mShaderLevel[SHADER_AVATAR] = 0;
-    }
-    
+
     if (gViewerWindow)
     {
         gViewerWindow->setCursor(UI_CURSOR_ARROW);
@@ -863,7 +843,7 @@ void LLViewerShaderMgr::unloadShaders()
 	mShaderLevel[SHADER_WINDLIGHT] = 0;
 	mShaderLevel[SHADER_TRANSFORM] = 0;
 
-	gPipeline.mVertexShadersLoaded = 0;
+	gPipeline.mShadersLoaded = false;
 }
 
 BOOL LLViewerShaderMgr::loadBasicShaders()
diff --git a/indra/newview/llviewerstats.cpp b/indra/newview/llviewerstats.cpp
index 1fda2fb20e..37b6244635 100644
--- a/indra/newview/llviewerstats.cpp
+++ b/indra/newview/llviewerstats.cpp
@@ -541,7 +541,7 @@ void send_viewer_stats(bool include_preferences)
 	{
 		shader_level = 2;
 	}
-	else if (gPipeline.canUseVertexShaders())
+	else if (gPipeline.shadersLoaded())
 	{
 		shader_level = 1;
 	}
diff --git a/indra/newview/llviewerwindow.cpp b/indra/newview/llviewerwindow.cpp
index 198007aaa1..6462ec019b 100644
--- a/indra/newview/llviewerwindow.cpp
+++ b/indra/newview/llviewerwindow.cpp
@@ -608,12 +608,6 @@ public:
 		{
 			LLTrace::Recording& last_frame_recording = LLTrace::get_frame_recording().getLastRecording();
 
-			if (gPipeline.getUseVertexShaders() == 0)
-			{
-				addText(xpos, ypos, "Shaders Disabled");
-				ypos += y_inc;
-			}
-
 			if (gGLManager.mHasATIMemInfo)
 			{
 				S32 meminfo[4];
@@ -2065,20 +2059,6 @@ void LLViewerWindow::initGLDefaults()
 {
 	gGL.setSceneBlendType(LLRender::BT_ALPHA);
 
-	if (!LLGLSLShader::sNoFixedFunction)
-	{ //initialize fixed function state
-		glColorMaterial( GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE );
-
-		glMaterialfv(GL_FRONT_AND_BACK,GL_AMBIENT,LLColor4::black.mV);
-		glMaterialfv(GL_FRONT_AND_BACK,GL_DIFFUSE,LLColor4::white.mV);
-
-		// lights for objects
-		glShadeModel( GL_SMOOTH );
-
-		gGL.getTexUnit(0)->enable(LLTexUnit::TT_TEXTURE);
-		gGL.getTexUnit(0)->setTextureBlendType(LLTexUnit::TB_MULT);
-	}
-
 	glPixelStorei(GL_PACK_ALIGNMENT,1);
 	glPixelStorei(GL_UNPACK_ALIGNMENT,1);
 
@@ -2694,10 +2674,7 @@ void LLViewerWindow::drawDebugText()
 	gGL.color4f(1,1,1,1);
 	gGL.pushMatrix();
 	gGL.pushUIMatrix();
-	if (LLGLSLShader::sNoFixedFunction)
-	{
-		gUIProgram.bind();
-	}
+	gUIProgram.bind();
 	{
 		// scale view by UI global scale factor and aspect ratio correction factor
 		gGL.scaleUI(mDisplayScale.mV[VX], mDisplayScale.mV[VY], 1.f);
@@ -2707,10 +2684,7 @@ void LLViewerWindow::drawDebugText()
 	gGL.popMatrix();
 
 	gGL.flush();
-	if (LLGLSLShader::sNoFixedFunction)
-	{
-		gUIProgram.unbind();
-	}
+	gUIProgram.unbind();
 }
 
 void LLViewerWindow::draw()
@@ -2756,10 +2730,7 @@ void LLViewerWindow::draw()
 	// Draw all nested UI views.
 	// No translation needed, this view is glued to 0,0
 
-	if (LLGLSLShader::sNoFixedFunction)
-	{
-		gUIProgram.bind();
-	}
+	gUIProgram.bind();
 
 	gGL.pushMatrix();
 	LLUI::pushMatrix();
@@ -2835,14 +2806,9 @@ void LLViewerWindow::draw()
 	LLUI::popMatrix();
 	gGL.popMatrix();
 
-	if (LLGLSLShader::sNoFixedFunction)
-	{
-		gUIProgram.unbind();
-	}
+	gUIProgram.unbind();
 
-//#if LL_DEBUG
 	LLView::sIsDrawing = FALSE;
-//#endif
 }
 
 // Takes a single keyup event, usually when UI is visible
diff --git a/indra/newview/llvoavatar.cpp b/indra/newview/llvoavatar.cpp
index 84bb67a03d..8e4e008738 100644
--- a/indra/newview/llvoavatar.cpp
+++ b/indra/newview/llvoavatar.cpp
@@ -5053,11 +5053,6 @@ U32 LLVOAvatar::renderSkinned()
 		bool should_alpha_mask = shouldAlphaMask();
 		LLGLState test(GL_ALPHA_TEST, should_alpha_mask);
 		
-		if (should_alpha_mask && !LLGLSLShader::sNoFixedFunction)
-		{
-			gGL.setAlphaRejectSettings(LLRender::CF_GREATER, 0.5f);
-		}
-		
 		BOOL first_pass = TRUE;
 		if (!LLDrawPoolAvatar::sSkipOpaque)
 		{
@@ -5104,11 +5099,6 @@ U32 LLVOAvatar::renderSkinned()
 			}
 		}
 
-		if (should_alpha_mask && !LLGLSLShader::sNoFixedFunction)
-		{
-			gGL.setAlphaRejectSettings(LLRender::CF_DEFAULT);
-		}
-
 		if (!LLDrawPoolAvatar::sSkipTransparent || LLPipeline::sImpostorRender)
 		{
 			LLGLState blend(GL_BLEND, !mIsDummy);
@@ -5124,21 +5114,21 @@ U32 LLVOAvatar::renderTransparent(BOOL first_pass)
 	U32 num_indices = 0;
 	if( isWearingWearableType( LLWearableType::WT_SKIRT ) && (isUIAvatar() || isTextureVisible(TEX_SKIRT_BAKED)) )
 	{
-		gGL.setAlphaRejectSettings(LLRender::CF_GREATER, 0.25f);
+        gGL.flush();
 		LLViewerJoint* skirt_mesh = getViewerJoint(MESH_ID_SKIRT);
 		if (skirt_mesh)
 		{
 			num_indices += skirt_mesh->render(mAdjustedPixelArea, FALSE);
 		}
 		first_pass = FALSE;
-		gGL.setAlphaRejectSettings(LLRender::CF_DEFAULT);
+        gGL.flush();
 	}
 
 	if (!isSelf() || gAgent.needsRenderHead() || LLPipeline::sShadowRender)
 	{
 		if (LLPipeline::sImpostorRender)
 		{
-			gGL.setAlphaRejectSettings(LLRender::CF_GREATER, 0.5f);
+            gGL.flush();
 		}
 		
 		if (isTextureVisible(TEX_HEAD_BAKED))
@@ -5161,7 +5151,7 @@ U32 LLVOAvatar::renderTransparent(BOOL first_pass)
 		}
 		if (LLPipeline::sImpostorRender)
 		{
-			gGL.setAlphaRejectSettings(LLRender::CF_DEFAULT);
+            gGL.flush();
 		}
 	}
 	
@@ -5193,11 +5183,6 @@ U32 LLVOAvatar::renderRigid()
 	bool should_alpha_mask = shouldAlphaMask();
 	LLGLState test(GL_ALPHA_TEST, should_alpha_mask);
 
-	if (should_alpha_mask && !LLGLSLShader::sNoFixedFunction)
-	{
-		gGL.setAlphaRejectSettings(LLRender::CF_GREATER, 0.5f);
-	}
-
 	if (isTextureVisible(TEX_EYES_BAKED) || (getOverallAppearance() == AOA_JELLYDOLL && !isControlAvatar()) || isUIAvatar())
 	{
 		LLViewerJoint* eyeball_left = getViewerJoint(MESH_ID_EYEBALL_LEFT);
@@ -5212,11 +5197,6 @@ U32 LLVOAvatar::renderRigid()
 		}
 	}
 
-	if (should_alpha_mask && !LLGLSLShader::sNoFixedFunction)
-	{
-		gGL.setAlphaRejectSettings(LLRender::CF_DEFAULT);
-	}
-	
 	return num_indices;
 }
 
@@ -5267,7 +5247,7 @@ U32 LLVOAvatar::renderImpostor(LLColor4U color, S32 diffuse_channel)
 	}
 	{
 	LLGLEnable test(GL_ALPHA_TEST);
-	gGL.setAlphaRejectSettings(LLRender::CF_GREATER, 0.f);
+    gGL.flush();
 
 	gGL.color4ubv(color.mV);
 	gGL.getTexUnit(diffuse_channel)->bind(&mImpostor);
diff --git a/indra/newview/llvosurfacepatch.cpp b/indra/newview/llvosurfacepatch.cpp
index 4d25e8c7bd..b0af565867 100644
--- a/indra/newview/llvosurfacepatch.cpp
+++ b/indra/newview/llvosurfacepatch.cpp
@@ -59,63 +59,7 @@ public:
 	// virtual
 	void setupVertexBuffer(U32 data_mask)
 	{	
-		if (LLGLSLShader::sNoFixedFunction)
-		{ //just use default if shaders are in play
-			LLVertexBuffer::setupVertexBuffer(data_mask & ~(MAP_TEXCOORD2 | MAP_TEXCOORD3));
-			return;
-		}
-
-		volatile U8* base = useVBOs() ? (U8*) mAlignedOffset : mMappedData;
-
-		//assume tex coords 2 and 3 are present
-		U32 type_mask = mTypeMask | MAP_TEXCOORD2 | MAP_TEXCOORD3;
-
-		if ((data_mask & type_mask) != data_mask)
-		{
-			LL_ERRS() << "LLVertexBuffer::setupVertexBuffer missing required components for supplied data mask." << LL_ENDL;
-		}
-
-		if (data_mask & MAP_NORMAL)
-		{
-			glNormalPointer(GL_FLOAT, LLVertexBuffer::sTypeSize[TYPE_NORMAL], (void*)(base + mOffsets[TYPE_NORMAL]));
-		}
-		if (data_mask & MAP_TEXCOORD3)
-		{ //substitute tex coord 1 for tex coord 3
-			glClientActiveTextureARB(GL_TEXTURE3_ARB);
-			glTexCoordPointer(2,GL_FLOAT, LLVertexBuffer::sTypeSize[TYPE_TEXCOORD1], (void*)(base + mOffsets[TYPE_TEXCOORD1]));
-			glClientActiveTextureARB(GL_TEXTURE0_ARB);
-		}
-		if (data_mask & MAP_TEXCOORD2)
-		{ //substitute tex coord 0 for tex coord 2
-			glClientActiveTextureARB(GL_TEXTURE2_ARB);
-			glTexCoordPointer(2,GL_FLOAT, LLVertexBuffer::sTypeSize[TYPE_TEXCOORD0], (void*)(base + mOffsets[TYPE_TEXCOORD0]));
-			glClientActiveTextureARB(GL_TEXTURE0_ARB);
-		}
-		if (data_mask & MAP_TEXCOORD1)
-		{
-			glClientActiveTextureARB(GL_TEXTURE1_ARB);
-			glTexCoordPointer(2,GL_FLOAT, LLVertexBuffer::sTypeSize[TYPE_TEXCOORD1], (void*)(base + mOffsets[TYPE_TEXCOORD1]));
-			glClientActiveTextureARB(GL_TEXTURE0_ARB);
-		}
-		if (data_mask & MAP_TANGENT)
-		{
-			glClientActiveTextureARB(GL_TEXTURE2_ARB);
-			glTexCoordPointer(3,GL_FLOAT, LLVertexBuffer::sTypeSize[TYPE_TANGENT], (void*)(base + mOffsets[TYPE_TANGENT]));
-			glClientActiveTextureARB(GL_TEXTURE0_ARB);
-		}
-		if (data_mask & MAP_TEXCOORD0)
-		{
-			glTexCoordPointer(2,GL_FLOAT, LLVertexBuffer::sTypeSize[TYPE_TEXCOORD0], (void*)(base + mOffsets[TYPE_TEXCOORD0]));
-		}
-		if (data_mask & MAP_COLOR)
-		{
-			glColorPointer(4, GL_UNSIGNED_BYTE, LLVertexBuffer::sTypeSize[TYPE_COLOR], (void*)(base + mOffsets[TYPE_COLOR]));
-		}
-		
-		if (data_mask & MAP_VERTEX)
-		{
-			glVertexPointer(3,GL_FLOAT, LLVertexBuffer::sTypeSize[TYPE_VERTEX], (void*)(base + 0));
-		}
+		LLVertexBuffer::setupVertexBuffer(data_mask & ~(MAP_TEXCOORD2 | MAP_TEXCOORD3));
 	}
 };
 
diff --git a/indra/newview/llvovolume.cpp b/indra/newview/llvovolume.cpp
index 464e6efd2e..2f554bc9b8 100644
--- a/indra/newview/llvovolume.cpp
+++ b/indra/newview/llvovolume.cpp
@@ -6567,7 +6567,7 @@ U32 LLVolumeGeometryManager::genDrawInfo(LLSpatialGroup* group, U32 mask, LLFace
 				{
 					registerFace(group, facep, LLRenderPass::PASS_ALPHA);
 				}
-				else if (gPipeline.canUseVertexShaders()
+				else if (gPipeline.shadersLoaded()
 					&& LLPipeline::sRenderBump 
 					&& te->getShiny() 
 					&& can_be_shiny)
@@ -6602,7 +6602,7 @@ U32 LLVolumeGeometryManager::genDrawInfo(LLSpatialGroup* group, U32 mask, LLFace
 					registerFace(group, facep, LLRenderPass::PASS_ALPHA);
 				}
 			}
-			else if (gPipeline.canUseVertexShaders()
+			else if (gPipeline.shadersLoaded()
 				&& LLPipeline::sRenderBump 
 				&& te->getShiny() 
 				&& can_be_shiny)
@@ -6683,7 +6683,7 @@ U32 LLVolumeGeometryManager::genDrawInfo(LLSpatialGroup* group, U32 mask, LLFace
 				}
 				
 				
-				if (!gPipeline.canUseVertexShaders() && 
+				if (!gPipeline.shadersLoaded() && 
 					!is_alpha && 
 					te->getShiny() && 
 					LLPipeline::sRenderBump)
diff --git a/indra/newview/llvowater.cpp b/indra/newview/llvowater.cpp
index efe6aa158e..089a7712c0 100644
--- a/indra/newview/llvowater.cpp
+++ b/indra/newview/llvowater.cpp
@@ -143,7 +143,7 @@ BOOL LLVOWater::updateGeometry(LLDrawable *drawable)
 	static const unsigned int vertices_per_quad = 4;
 	static const unsigned int indices_per_quad = 6;
 
-	const S32 size = LLPipeline::sRenderTransparentWater && LLGLSLShader::sNoFixedFunction ? 16 : 1;
+	const S32 size = LLPipeline::sRenderTransparentWater ? 16 : 1;
 
 	const S32 num_quads = size * size;
 	face->setSize(vertices_per_quad * num_quads,
diff --git a/indra/newview/llworldmapview.cpp b/indra/newview/llworldmapview.cpp
index a6df079223..59ac4554d7 100644
--- a/indra/newview/llworldmapview.cpp
+++ b/indra/newview/llworldmapview.cpp
@@ -321,22 +321,19 @@ void LLWorldMapView::draw()
 		// Clear the background alpha to 0
 		gGL.flush();
 		gGL.setColorMask(false, true);
-		gGL.setAlphaRejectSettings(LLRender::CF_GREATER_EQUAL, 0.f);
+        gGL.flush();
 		gGL.setSceneBlendType(LLRender::BT_REPLACE);
 		gGL.color4f(0.0f, 0.0f, 0.0f, 0.0f);
 		gl_rect_2d(0, height, width, 0);
 	}
 
 	gGL.flush();
-
-	gGL.setAlphaRejectSettings(LLRender::CF_DEFAULT);
 	gGL.setColorMask(true, true);
 
 	// Draw the image tiles
 	drawMipmap(width, height);
 	gGL.flush();
 
-	gGL.setAlphaRejectSettings(LLRender::CF_DEFAULT);
 	gGL.setColorMask(true, true);
 
 	// Draw per sim overlayed information (names, mature, offline...)
@@ -480,13 +477,13 @@ void LLWorldMapView::draw()
 	LLGLSUIDefault gls_ui;
 	{
 		gGL.getTexUnit(0)->unbind(LLTexUnit::TT_TEXTURE);
-		gGL.setAlphaRejectSettings(LLRender::CF_GREATER_EQUAL, 0.f);
+        gGL.flush();
 		gGL.blendFunc(LLRender::BF_ONE_MINUS_DEST_ALPHA, LLRender::BF_DEST_ALPHA);
 		gGL.color4fv( mBackgroundColor.mV );
 		gl_rect_2d(0, height, width, 0);
 	}
 
-	gGL.setAlphaRejectSettings(LLRender::CF_DEFAULT);
+    gGL.flush();
 	gGL.setSceneBlendType(LLRender::BT_ALPHA);
 
 	// Draw item infos if we're not zoomed out too much and there's something to draw
diff --git a/indra/newview/pipeline.cpp b/indra/newview/pipeline.cpp
index 1f4fdca2e7..c122b4f43e 100644
--- a/indra/newview/pipeline.cpp
+++ b/indra/newview/pipeline.cpp
@@ -376,8 +376,7 @@ LLPipeline::LLPipeline() :
 	mNumVisibleFaces(0),
 
 	mInitialized(false),
-	mVertexShadersEnabled(false),
-	mVertexShadersLoaded(0),
+	mShadersLoaded(false),
 	mTransformFeedbackPrimitives(0),
 	mRenderDebugFeatureMask(0),
 	mRenderDebugMask(0),
@@ -738,7 +737,7 @@ void LLPipeline::resizeShadowTexture()
 
 void LLPipeline::resizeScreenTexture()
 {
-	if (gPipeline.canUseVertexShaders() && assertInitialized())
+	if (gPipeline.shadersLoaded())
 	{
 		GLuint resX = gViewerWindow->getWorldViewWidthRaw();
 		GLuint resY = gViewerWindow->getWorldViewHeightRaw();
@@ -749,8 +748,8 @@ void LLPipeline::resizeScreenTexture()
             releaseShadowTargets();
 		    allocateScreenBuffer(resX,resY);
             gResizeScreenTexture = FALSE;
-				}
-			}
+		}
+	}
 }
 
 void LLPipeline::allocatePhysicsBuffer()
@@ -1061,7 +1060,6 @@ void LLPipeline::refreshCachedSettings()
 
 	LLPipeline::sUseOcclusion = 
 			(!gUseWireframe
-			&& LLGLSLShader::sNoFixedFunction
 			&& LLFeatureManager::getInstance()->isFeatureAvailable("UseOcclusion") 
 			&& gSavedSettings.getBOOL("UseOcclusion") 
 			&& gGLManager.mHasOcclusionQuery) ? 2 : 0;
@@ -1365,10 +1363,7 @@ void LLPipeline::restoreGL()
 {
 	assertInitialized();
 
-	if (mVertexShadersEnabled)
-	{
-		LLViewerShaderMgr::instance()->setShaders();
-	}
+	LLViewerShaderMgr::instance()->setShaders();
 
 	for (LLWorld::region_list_t::const_iterator iter = LLWorld::getInstance()->getRegionList().begin(); 
 			iter != LLWorld::getInstance()->getRegionList().end(); ++iter)
@@ -1385,17 +1380,9 @@ void LLPipeline::restoreGL()
 	}
 }
 
-
-bool LLPipeline::canUseVertexShaders()
+bool LLPipeline::shadersLoaded()
 {
-	if ((assertInitialized() && mVertexShadersLoaded != 1) )
-	{
-		return false;
-	}
-	else
-	{
-		return true;
-	}
+    return (assertInitialized() && mShadersLoaded);
 }
 
 bool LLPipeline::canUseWindLightShaders() const
@@ -1418,8 +1405,7 @@ bool LLPipeline::canUseAntiAliasing() const
 void LLPipeline::unloadShaders()
 {
 	LLViewerShaderMgr::instance()->unloadShaders();
-
-	mVertexShadersLoaded = 0;
+	mShadersLoaded = false;
 }
 
 void LLPipeline::assertInitializedDoError()
@@ -2338,8 +2324,7 @@ static LLTrace::BlockTimerStatHandle FTM_CULL("Object Culling");
 void LLPipeline::updateCull(LLCamera& camera, LLCullResult& result, S32 water_clip, LLPlane* planep)
 {
 	static LLCachedControl<bool> use_occlusion(gSavedSettings,"UseOcclusion");
-	static bool can_use_occlusion = LLGLSLShader::sNoFixedFunction
-									&& LLFeatureManager::getInstance()->isFeatureAvailable("UseOcclusion") 
+	static bool can_use_occlusion = LLFeatureManager::getInstance()->isFeatureAvailable("UseOcclusion") 
 									&& gGLManager.mHasOcclusionQuery;
 
 	LL_RECORD_BLOCK_TIME(FTM_CULL);
@@ -2357,7 +2342,7 @@ void LLPipeline::updateCull(LLCamera& camera, LLCullResult& result, S32 water_cl
 
 	sCull->clear();
 
-	bool to_texture = LLPipeline::sUseOcclusion > 1 && gPipeline.canUseVertexShaders();
+	bool to_texture = LLPipeline::sUseOcclusion > 1 && gPipeline.shadersLoaded();
 
 	if (to_texture)
 	{
@@ -2391,7 +2376,7 @@ 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 (gPipeline.shadersLoaded() && 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;
@@ -2650,7 +2635,7 @@ void LLPipeline::doOcclusion(LLCamera& camera)
 		LLGLDisable cull(GL_CULL_FACE);
 
 		
-		bool bind_shader = LLGLSLShader::sNoFixedFunction && LLGLSLShader::sCurBoundShader == 0;
+		bool bind_shader = (LLGLSLShader::sCurBoundShader == 0);
 		if (bind_shader)
 		{
 			if (LLPipeline::sShadowRender)
@@ -3992,10 +3977,7 @@ void render_hud_elements()
 	
 	gGL.color4f(1,1,1,1);
 	
-	if (LLGLSLShader::sNoFixedFunction)
-	{
-		gUIProgram.bind();
-	}
+	gUIProgram.bind();
 	LLGLDepthTest depth(GL_TRUE, GL_FALSE);
 
 	if (!LLPipeline::sReflectionRender && gPipeline.hasRenderDebugFeatureMask(LLPipeline::RENDER_DEBUG_FEATURE_UI))
@@ -4027,10 +4009,7 @@ void render_hud_elements()
 		LLHUDText::renderAllHUD();
 	}
 
-	if (LLGLSLShader::sNoFixedFunction)
-	{
-		gUIProgram.unbind();
-	}
+	gUIProgram.unbind();
 	gGL.flush();
 }
 
@@ -4062,10 +4041,7 @@ void LLPipeline::renderHighlights()
 
 		gGL.setColorMask(false, false);
 
-        if (LLGLSLShader::sNoFixedFunction)
-        {
-            gHighlightProgram.bind();
-        }
+        gHighlightProgram.bind();
 
 		for (std::set<HighlightItem>::iterator iter = mHighlightSet.begin(); iter != mHighlightSet.end(); ++iter)
 		{
@@ -4297,7 +4273,6 @@ void LLPipeline::renderGeom(LLCamera& camera, bool forceVBOUpdate)
 	// Do verification of GL state
 	LLGLState::checkStates();
 	LLGLState::checkTextureChannels();
-	LLGLState::checkClientArrays();
 	if (mRenderDebugMask & RENDER_DEBUG_VERIFY)
 	{
 		if (!verify())
@@ -4546,7 +4521,6 @@ void LLPipeline::renderGeomDeferred(LLCamera& camera)
 
 		LLGLState::checkStates();
 		LLGLState::checkTextureChannels();
-		LLGLState::checkClientArrays();
 
 		U32 cur_type = 0;
 
@@ -4819,10 +4793,7 @@ void LLPipeline::renderPhysicsDisplay()
 
 	gGL.setColorMask(true, false);
 
-	if (LLGLSLShader::sNoFixedFunction)
-	{
-		gDebugProgram.bind();
-	}
+	gDebugProgram.bind();
 
 	for (LLWorld::region_list_t::const_iterator iter = LLWorld::getInstance()->getRegionList().begin(); 
 			iter != LLWorld::getInstance()->getRegionList().end(); ++iter)
@@ -4843,11 +4814,7 @@ void LLPipeline::renderPhysicsDisplay()
 
 	gGL.flush();
 
-	if (LLGLSLShader::sNoFixedFunction)
-	{
-		gDebugProgram.unbind();
-	}
-
+	gDebugProgram.unbind();
 	mPhysicsDisplay.flush();
 }
 
@@ -4874,13 +4841,10 @@ void LLPipeline::renderDebug()
 
 				if ( pathfindingCharacter->getVisible() || gAgentCamera.cameraMouselook() )			
 				{	
-					if (LLGLSLShader::sNoFixedFunction)
-					{					
-						gPathfindingProgram.bind();			
-						gPathfindingProgram.uniform1f(sTint, 1.f);
-						gPathfindingProgram.uniform1f(sAmbiance, 1.f);
-						gPathfindingProgram.uniform1f(sAlphaScale, 1.f);
-					}
+					gPathfindingProgram.bind();			
+					gPathfindingProgram.uniform1f(sTint, 1.f);
+					gPathfindingProgram.uniform1f(sAmbiance, 1.f);
+					gPathfindingProgram.uniform1f(sAlphaScale, 1.f);
 
 					//Requried character physics capsule render parameters
 					LLUUID id;					
@@ -4889,21 +4853,14 @@ void LLPipeline::renderDebug()
 				
 					if ( pathfindingCharacter->isPhysicsCapsuleEnabled( id, pos, rot ) )
 					{
-						if (LLGLSLShader::sNoFixedFunction)
-						{					
-							//remove blending artifacts
-							gGL.setColorMask(false, false);
-							llPathingLibInstance->renderSimpleShapeCapsuleID( gGL, id, pos, rot );				
-							gGL.setColorMask(true, false);
-							LLGLEnable blend(GL_BLEND);
-							gPathfindingProgram.uniform1f(sAlphaScale, 0.90f);
-							llPathingLibInstance->renderSimpleShapeCapsuleID( gGL, id, pos, rot );
-							gPathfindingProgram.bind();
-						}
-						else
-						{
-							llPathingLibInstance->renderSimpleShapeCapsuleID( gGL, id, pos, rot );
-						}
+						//remove blending artifacts
+						gGL.setColorMask(false, false);
+						llPathingLibInstance->renderSimpleShapeCapsuleID( gGL, id, pos, rot );				
+						gGL.setColorMask(true, false);
+						LLGLEnable blend(GL_BLEND);
+						gPathfindingProgram.uniform1f(sAlphaScale, 0.90f);
+						llPathingLibInstance->renderSimpleShapeCapsuleID( gGL, id, pos, rot );
+						gPathfindingProgram.bind();
 					}
 				}
 			}
@@ -4919,14 +4876,11 @@ void LLPipeline::renderDebug()
 				{				
 					F32 ambiance = gSavedSettings.getF32("PathfindingAmbiance");
 
-					if (LLGLSLShader::sNoFixedFunction)
-					{					
-						gPathfindingProgram.bind();
+					gPathfindingProgram.bind();
 			
-						gPathfindingProgram.uniform1f(sTint, 1.f);
-						gPathfindingProgram.uniform1f(sAmbiance, ambiance);
-						gPathfindingProgram.uniform1f(sAlphaScale, 1.f);
-					}
+					gPathfindingProgram.uniform1f(sTint, 1.f);
+					gPathfindingProgram.uniform1f(sAmbiance, ambiance);
+					gPathfindingProgram.uniform1f(sAlphaScale, 1.f);
 
 					if ( !pathfindingConsole->isRenderWorld() )
 					{
@@ -4958,18 +4912,11 @@ void LLPipeline::renderDebug()
 						}
 						
 						//render edges
-						if (LLGLSLShader::sNoFixedFunction)
-						{
-							gPathfindingNoNormalsProgram.bind();
-							gPathfindingNoNormalsProgram.uniform1f(sTint, 1.f);
-							gPathfindingNoNormalsProgram.uniform1f(sAlphaScale, 1.f);
-							llPathingLibInstance->renderNavMeshEdges();
-							gPathfindingProgram.bind();
-						}
-						else
-						{
-							llPathingLibInstance->renderNavMeshEdges();
-						}
+						gPathfindingNoNormalsProgram.bind();
+						gPathfindingNoNormalsProgram.uniform1f(sTint, 1.f);
+						gPathfindingNoNormalsProgram.uniform1f(sAlphaScale, 1.f);
+						llPathingLibInstance->renderNavMeshEdges();
+						gPathfindingProgram.bind();
 
 						gGL.flush();
 						glPolygonMode( GL_FRONT_AND_BACK, GL_FILL );	
@@ -4980,53 +4927,31 @@ void LLPipeline::renderDebug()
 					if ( LLPathfindingPathTool::getInstance()->isRenderPath() )
 					{
 						//The path
-						if (LLGLSLShader::sNoFixedFunction)
-						{
-							gUIProgram.bind();
-							gGL.getTexUnit(0)->bind(LLViewerFetchedTexture::sWhiteImagep);
-							llPathingLibInstance->renderPath();
-							gPathfindingProgram.bind();
-						}
-						else
-						{
-							llPathingLibInstance->renderPath();
-						}
-						//The bookends
-						if (LLGLSLShader::sNoFixedFunction)
-						{
-							//remove blending artifacts
-							gGL.setColorMask(false, false);
-							llPathingLibInstance->renderPathBookend( gGL, LLPathingLib::LLPL_START );
-							llPathingLibInstance->renderPathBookend( gGL, LLPathingLib::LLPL_END );
+						gUIProgram.bind();
+						gGL.getTexUnit(0)->bind(LLViewerFetchedTexture::sWhiteImagep);
+						llPathingLibInstance->renderPath();
+						gPathfindingProgram.bind();
+
+                        //The bookends
+						//remove blending artifacts
+						gGL.setColorMask(false, false);
+						llPathingLibInstance->renderPathBookend( gGL, LLPathingLib::LLPL_START );
+						llPathingLibInstance->renderPathBookend( gGL, LLPathingLib::LLPL_END );
 						
-							gGL.setColorMask(true, false);
-							//render the bookends
-							LLGLEnable blend(GL_BLEND);
-							gPathfindingProgram.uniform1f(sAlphaScale, 0.90f);
-							llPathingLibInstance->renderPathBookend( gGL, LLPathingLib::LLPL_START );
-							llPathingLibInstance->renderPathBookend( gGL, LLPathingLib::LLPL_END );
-							gPathfindingProgram.bind();
-						}
-						else
-						{
-							llPathingLibInstance->renderPathBookend( gGL, LLPathingLib::LLPL_START );
-							llPathingLibInstance->renderPathBookend( gGL, LLPathingLib::LLPL_END );
-						}
-					
+						gGL.setColorMask(true, false);
+						//render the bookends
+						LLGLEnable blend(GL_BLEND);
+						gPathfindingProgram.uniform1f(sAlphaScale, 0.90f);
+						llPathingLibInstance->renderPathBookend( gGL, LLPathingLib::LLPL_START );
+						llPathingLibInstance->renderPathBookend( gGL, LLPathingLib::LLPL_END );
+						gPathfindingProgram.bind();
 					}
 				
 					if ( pathfindingConsole->isRenderWaterPlane() )
 					{	
-						if (LLGLSLShader::sNoFixedFunction)
-						{
-							LLGLEnable blend(GL_BLEND);
-							gPathfindingProgram.uniform1f(sAlphaScale, 0.90f);
-							llPathingLibInstance->renderSimpleShapes( gGL, gAgent.getRegion()->getWaterHeight() );
-						}
-						else
-						{
-							llPathingLibInstance->renderSimpleShapes( gGL, gAgent.getRegion()->getWaterHeight() );					
-						}
+						LLGLEnable blend(GL_BLEND);
+						gPathfindingProgram.uniform1f(sAlphaScale, 0.90f);
+						llPathingLibInstance->renderSimpleShapes( gGL, gAgent.getRegion()->getWaterHeight() );
 					}
 				//physics/exclusion shapes
 				if ( pathfindingConsole->isRenderAnyShapes() )
@@ -5157,18 +5082,11 @@ void LLPipeline::renderDebug()
 						}
 
 						//render edges
-						if (LLGLSLShader::sNoFixedFunction)
-						{
-							gPathfindingNoNormalsProgram.bind();
-							gPathfindingNoNormalsProgram.uniform1f(sTint, gSavedSettings.getF32("PathfindingXRayTint"));
-							gPathfindingNoNormalsProgram.uniform1f(sAlphaScale, gSavedSettings.getF32("PathfindingXRayOpacity"));
-							llPathingLibInstance->renderNavMeshEdges();
-							gPathfindingProgram.bind();
-						}
-						else
-						{
-							llPathingLibInstance->renderNavMeshEdges();
-						}
+						gPathfindingNoNormalsProgram.bind();
+						gPathfindingNoNormalsProgram.uniform1f(sTint, gSavedSettings.getF32("PathfindingXRayTint"));
+						gPathfindingNoNormalsProgram.uniform1f(sAlphaScale, gSavedSettings.getF32("PathfindingXRayOpacity"));
+						llPathingLibInstance->renderNavMeshEdges();
+						gPathfindingProgram.bind();
 					
 						gGL.flush();
 						glLineWidth(1.0f);	
@@ -5177,10 +5095,7 @@ void LLPipeline::renderDebug()
 					glPolygonOffset(0.f, 0.f);
 
 					gGL.flush();
-					if (LLGLSLShader::sNoFixedFunction)
-					{
-						gPathfindingProgram.unbind();
-					}
+					gPathfindingProgram.unbind();
 				}
 			}
 		}
@@ -5195,10 +5110,7 @@ void LLPipeline::renderDebug()
 	
 	if (!hud_only && !mDebugBlips.empty())
 	{ //render debug blips
-		if (LLGLSLShader::sNoFixedFunction)
-		{
-			gUIProgram.bind();
-		}
+		gUIProgram.bind();
 
 		gGL.getTexUnit(0)->bind(LLViewerFetchedTexture::sWhiteImagep, true);
 
@@ -5262,7 +5174,7 @@ void LLPipeline::renderDebug()
 		}
 	}
 
-	if (gPipeline.hasRenderDebugMask(LLPipeline::RENDER_DEBUG_OCCLUSION) && LLGLSLShader::sNoFixedFunction)
+	if (gPipeline.hasRenderDebugMask(LLPipeline::RENDER_DEBUG_OCCLUSION))
 	{ //render visible selected group occlusion geometry
 		gDebugProgram.bind();
 		LLGLDepthTest depth(GL_TRUE, GL_FALSE);
@@ -5284,44 +5196,38 @@ void LLPipeline::renderDebug()
 
 	visible_selected_groups.clear();
 
-	if (LLGLSLShader::sNoFixedFunction)
-	{
-		gUIProgram.bind();
-	}
+	gUIProgram.bind();
 
 	if (hasRenderDebugMask(LLPipeline::RENDER_DEBUG_RAYCAST) && !hud_only)
 	{ //draw crosshairs on particle intersection
 		if (gDebugRaycastParticle)
 		{
-			if (LLGLSLShader::sNoFixedFunction)
-			{ //this debug display requires shaders
-				gDebugProgram.bind();
+			gDebugProgram.bind();
 
-				gGL.getTexUnit(0)->unbind(LLTexUnit::TT_TEXTURE);
+			gGL.getTexUnit(0)->unbind(LLTexUnit::TT_TEXTURE);
 
-				LLVector3 center(gDebugRaycastParticleIntersection.getF32ptr());
-				LLVector3 size(0.1f, 0.1f, 0.1f);
+			LLVector3 center(gDebugRaycastParticleIntersection.getF32ptr());
+			LLVector3 size(0.1f, 0.1f, 0.1f);
 
-				LLVector3 p[6];
+			LLVector3 p[6];
 
-				p[0] = center + size.scaledVec(LLVector3(1,0,0));
-				p[1] = center + size.scaledVec(LLVector3(-1,0,0));
-				p[2] = center + size.scaledVec(LLVector3(0,1,0));
-				p[3] = center + size.scaledVec(LLVector3(0,-1,0));
-				p[4] = center + size.scaledVec(LLVector3(0,0,1));
-				p[5] = center + size.scaledVec(LLVector3(0,0,-1));
+			p[0] = center + size.scaledVec(LLVector3(1,0,0));
+			p[1] = center + size.scaledVec(LLVector3(-1,0,0));
+			p[2] = center + size.scaledVec(LLVector3(0,1,0));
+			p[3] = center + size.scaledVec(LLVector3(0,-1,0));
+			p[4] = center + size.scaledVec(LLVector3(0,0,1));
+			p[5] = center + size.scaledVec(LLVector3(0,0,-1));
 				
-				gGL.begin(LLRender::LINES);
-				gGL.diffuseColor3f(1.f, 1.f, 0.f);
-				for (U32 i = 0; i < 6; i++)
-				{
-					gGL.vertex3fv(p[i].mV);
-				}
-				gGL.end();
-				gGL.flush();
-
-				gDebugProgram.unbind();
+			gGL.begin(LLRender::LINES);
+			gGL.diffuseColor3f(1.f, 1.f, 0.f);
+			for (U32 i = 0; i < 6; i++)
+			{
+				gGL.vertex3fv(p[i].mV);
 			}
+			gGL.end();
+			gGL.flush();
+
+			gDebugProgram.unbind();
 		}
 	}
 
@@ -5554,10 +5460,7 @@ void LLPipeline::renderDebug()
 	}
 
 	gGL.flush();
-	if (LLGLSLShader::sNoFixedFunction)
-	{
-		gUIProgram.unbind();
-	}
+	gUIProgram.unbind();
 }
 
 void LLPipeline::rebuildPools()
@@ -6226,11 +6129,6 @@ void LLPipeline::setupHWLights(LLDrawPool* pool)
     LLEnvironment& environment = LLEnvironment::instance();
     LLSettingsSky::ptr_t psky = environment.getCurrentSky();
 
-	if (!LLGLSLShader::sNoFixedFunction)
-	{
-		gGL.syncMatrices();
-	}
-
     // Ambient
     LLColor4 ambient = psky->getTotalAmbient();
 		gGL.setAmbientLightColor(ambient);
@@ -6429,11 +6327,6 @@ void LLPipeline::setupHWLights(LLDrawPool* pool)
     // prev site of forward (non-deferred) character light injection, removed by SL-13522 09/20
 
 	// Init GL state
-	if (!LLGLSLShader::sNoFixedFunction)
-	{
-		glDisable(GL_LIGHTING);
-	}
-
 	for (S32 i = 0; i < 8; ++i)
 	{
 		gGL.getLight(i)->disable();
@@ -6452,13 +6345,6 @@ void LLPipeline::enableLights(U32 mask)
 	if (mLightMask != mask)
 	{
 		stop_glerror();
-		if (!mLightMask)
-		{
-			if (!LLGLSLShader::sNoFixedFunction)
-			{
-				glEnable(GL_LIGHTING);
-			}
-		}
 		if (mask)
 		{
 			stop_glerror();
@@ -6478,13 +6364,6 @@ void LLPipeline::enableLights(U32 mask)
 			}
 			stop_glerror();
 		}
-		else
-		{
-			if (!LLGLSLShader::sNoFixedFunction)
-			{
-				glDisable(GL_LIGHTING);
-			}
-		}
 		mLightMask = mask;
 		stop_glerror();
 	}
@@ -6535,11 +6414,6 @@ void LLPipeline::enableLightsPreview()
 {
 	disableLights();
 
-	if (!LLGLSLShader::sNoFixedFunction)
-	{
-		glEnable(GL_LIGHTING);
-	}
-
 	LLColor4 ambient = PreviewAmbientColor;
 	gGL.setAmbientLightColor(ambient);
 
@@ -8093,18 +7967,7 @@ void LLPipeline::renderFinalize()
 
         LLGLDisable blend(GL_BLEND);
 
-        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);
-        }
+        gGlowCombineProgram.bind();
 
         gGL.getTexUnit(0)->bind(&mGlow[1]);
         gGL.getTexUnit(1)->bind(&mScreen);
@@ -8114,28 +7977,14 @@ void LLPipeline::renderFinalize()
         buff->setBuffer(mask);
         buff->drawArrays(LLRender::TRIANGLE_STRIP, 0, 3);
 
-        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);
-        }
+        gGlowCombineProgram.unbind();
     }
 
     gGL.setSceneBlendType(LLRender::BT_ALPHA);
 
     if (hasRenderDebugMask(LLPipeline::RENDER_DEBUG_PHYSICS_SHAPES))
     {
-        if (LLGLSLShader::sNoFixedFunction)
-        {
-            gSplatTextureRectProgram.bind();
-        }
+        gSplatTextureRectProgram.bind();
 
         gGL.setColorMask(true, false);
 
@@ -8161,10 +8010,7 @@ void LLPipeline::renderFinalize()
         gGL.end();
         gGL.flush();
 
-        if (LLGLSLShader::sNoFixedFunction)
-        {
-            gSplatTextureRectProgram.unbind();
-        }
+        gSplatTextureRectProgram.unbind();
     }
 
     if (LLRenderTarget::sUseFBO)
@@ -9502,17 +9348,11 @@ void LLPipeline::generateWaterReflection(LLCamera& camera_in)
                     renderGeom(camera);
                 }
 
-                if (LLGLSLShader::sNoFixedFunction)
-                {
-                    gUIProgram.bind();
-                }
+                gUIProgram.bind();
 
                 LLWorld::getInstance()->renderPropertyLines();
 
-                if (LLGLSLShader::sNoFixedFunction)
-                {
-                    gUIProgram.unbind();
-                }
+                gUIProgram.unbind();
 
                 mWaterDis.flush();
             }
@@ -10066,10 +9906,7 @@ void LLPipeline::generateHighlight(LLCamera& camera)
 		gGL.setColorMask(true, true);
 		mHighlight.clear();
 
-        if (LLGLSLShader::sNoFixedFunction)
-        {
-            gHighlightProgram.bind();
-        }
+        gHighlightProgram.bind();
 
 		gGL.getTexUnit(0)->bind(LLViewerFetchedTexture::sWhiteImagep);
 		for (std::set<HighlightItem>::iterator iter = mHighlightSet.begin(); iter != mHighlightSet.end(); )
@@ -10951,7 +10788,6 @@ void LLPipeline::generateImpostor(LLVOAvatar* avatar)
     LL_RECORD_BLOCK_TIME(FTM_GENERATE_IMPOSTOR);
 	LLGLState::checkStates();
 	LLGLState::checkTextureChannels();
-	LLGLState::checkClientArrays();
 
 	static LLCullResult result;
 	result.clear();
@@ -11210,11 +11046,7 @@ void LLPipeline::generateImpostor(LLVOAvatar* avatar)
 
 		static const F32 clip_plane = 0.99999f;
 
-		if (LLGLSLShader::sNoFixedFunction)
-		{
-			gDebugProgram.bind();
-		}
-
+		gDebugProgram.bind();
 
 		if (visually_muted)
 		{	// Visually muted avatar
@@ -11228,7 +11060,6 @@ void LLPipeline::generateImpostor(LLVOAvatar* avatar)
 			gGL.diffuseColor4fv(LLColor4::pink.mV );
 		}
 
-		{
 		gGL.begin(LLRender::QUADS);
 		gGL.vertex3f(-1, -1, clip_plane);
 		gGL.vertex3f(1, -1, clip_plane);
@@ -11236,12 +11067,8 @@ void LLPipeline::generateImpostor(LLVOAvatar* avatar)
 		gGL.vertex3f(-1, 1, clip_plane);
 		gGL.end();
 		gGL.flush();
-		}
 
-		if (LLGLSLShader::sNoFixedFunction)
-		{
-			gDebugProgram.unbind();
-		}
+		gDebugProgram.unbind();
 
 		gGL.popMatrix();
 		gGL.matrixMode(LLRender::MM_MODELVIEW);
@@ -11270,7 +11097,6 @@ void LLPipeline::generateImpostor(LLVOAvatar* avatar)
 	LLVertexBuffer::unbind();
 	LLGLState::checkStates();
 	LLGLState::checkTextureChannels();
-	LLGLState::checkClientArrays();
 }
 
 bool LLPipeline::hasRenderBatches(const U32 type) const
diff --git a/indra/newview/pipeline.h b/indra/newview/pipeline.h
index d82f8bd64b..3ac3e3ce01 100644
--- a/indra/newview/pipeline.h
+++ b/indra/newview/pipeline.h
@@ -225,9 +225,7 @@ public:
 	S32			getLightingDetail() const { return mLightingDetail; }
 	S32			getMaxLightingDetail() const;
 		
-	void		setUseVertexShaders(bool use_shaders);
-	bool		getUseVertexShaders() const { return mVertexShadersEnabled; }
-	bool		canUseVertexShaders();
+	bool		shadersLoaded();
 	bool		canUseWindLightShaders() const;
 	bool		canUseWindLightShadersOnObjects() const;
 	bool		canUseAntiAliasing() const;
@@ -702,8 +700,7 @@ public:
     LLVector4			mTransformedMoonDir;
 
 	bool					mInitialized;
-	bool					mVertexShadersEnabled;
-	S32						mVertexShadersLoaded; // 0 = no, 1 = yes, -1 = failed
+	bool					mShadersLoaded;
 
 	U32						mTransformFeedbackPrimitives; //number of primitives expected to be generated by transform feedback
 protected: