3 files changed, 40 insertions, 20 deletions
diff --git a/indra/llrender/llrender.cpp b/indra/llrender/llrender.cpp
index 812fa7024b..cd827f5091 100644
--- a/indra/llrender/llrender.cpp
+++ b/indra/llrender/llrender.cpp
@@ -1444,6 +1444,11 @@ const glh::matrix4f& LLRender::getModelviewMatrix()
 	return mMatrix[MM_MODELVIEW][mMatIdx[MM_MODELVIEW]];
 }
 
+const glh::matrix4f& LLRender::getProjectionMatrix()
+{
+	return mMatrix[MM_PROJECTION][mMatIdx[MM_PROJECTION]];
+}
+
 void LLRender::translateUI(F32 x, F32 y, F32 z)
 {
 	if (mUIOffset.empty())
diff --git a/indra/llrender/llrender.h b/indra/llrender/llrender.h
index 7581b9f908..fa5f7f311d 100644
--- a/indra/llrender/llrender.h
+++ b/indra/llrender/llrender.h
@@ -348,6 +348,7 @@ public:
 	void matrixMode(U32 mode);	
 
 	const glh::matrix4f& getModelviewMatrix();
+	const glh::matrix4f& getProjectionMatrix();
 
 	void syncMatrices();
 	void syncLightState();
diff --git a/indra/llrender/llshadermgr.cpp b/indra/llrender/llshadermgr.cpp
index eea768a3ea..ac9dc9544d 100644
--- a/indra/llrender/llshadermgr.cpp
+++ b/indra/llrender/llshadermgr.cpp
@@ -845,28 +845,42 @@ BOOL LLShaderMgr::linkProgramObject(GLhandleARB obj, BOOL suppress_errors)
 		LL_WARNS("ShaderLoading") << "GLSL Linker Error:" << LL_ENDL;
 	}
 
-// NOTE: Removing LL_DARWIN block as it doesn't seem to actually give the correct answer, 
-// but want it for reference once I move it.
-#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   
-	glBegin(gGL.mMode);
-	glEnd();
-
-	// Query whether the shader can or cannot run in hardware
-	// http://developer.apple.com/qa/qa2007/qa1502.html
-	long vertexGPUProcessing;
-	CGLContextObj ctx = CGLGetCurrentContext();
-	CGLGetParameter (ctx, kCGLCPGPUVertexProcessing, &vertexGPUProcessing);	
-	long fragmentGPUProcessing;
-	CGLGetParameter (ctx, kCGLCPGPUFragmentProcessing, &fragmentGPUProcessing);
-	if (!fragmentGPUProcessing || !vertexGPUProcessing)
+#if LL_DARWIN
+
+	// For some reason this absolutely kills the frame rate when VBO's are enabled
+	if (0)
 	{
-		LL_WARNS("ShaderLoading") << "GLSL Linker: Running in Software:" << LL_ENDL;
-		success = GL_FALSE;
-		suppress_errors = FALSE;		
+		// 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_WARNS("ShaderLoading") << "GLSL Linker: Running in Software:" << LL_ENDL;
+			success = GL_FALSE;
+			suppress_errors = FALSE;		
+		}
 	}
-	
+
 #else
 	std::string log = get_object_log(obj);
 	LLStringUtil::toLower(log);