1 files changed, 16 insertions, 56 deletions

diff --git a/indra/newview/llfeaturemanager.cpp b/indra/newview/llfeaturemanager.cpp
index 1b03ec3e71..64b133aeee 100644
--- a/indra/newview/llfeaturemanager.cpp
+++ b/indra/newview/llfeaturemanager.cpp
@@ -408,7 +408,7 @@ bool LLFeatureManager::loadGPUClass()
 {
 	if (!gSavedSettings.getBOOL("SkipBenchmark"))
 	{
-        F32 class0_gbps = gSavedSettings.getF32("RenderClass0MemoryBandwidth");
+		F32 class1_gbps = gSavedSettings.getF32("RenderClass1MemoryBandwidth");
 		//get memory bandwidth from benchmark
 		F32 gbps;
 		try
@@ -434,64 +434,28 @@ bool LLFeatureManager::loadGPUClass()
         gbps *= cpu_bias;
 
 		if (gbps < 0.f)
-		{ //couldn't bench, use GLVersion
+		{ //couldn't bench, default to Low
 	#if LL_DARWIN
 		//GLVersion is misleading on OSX, just default to class 3 if we can't bench
 		LL_WARNS("RenderInit") << "Unable to get an accurate benchmark; defaulting to class 3" << LL_ENDL;
 		mGPUClass = GPU_CLASS_3;
 	#else
-			if (gGLManager.mGLVersion <= 2.f)
-			{
-				mGPUClass = GPU_CLASS_0;
-			}
-			else if (gGLManager.mGLVersion <= 3.f)
-			{
-				mGPUClass = GPU_CLASS_1;
-			}
-			else if (gGLManager.mGLVersion < 3.3f)
-			{
-				mGPUClass = GPU_CLASS_2;
-			}
-			else if (gGLManager.mGLVersion < 4.f)
-			{
-				mGPUClass = GPU_CLASS_3;
-			}
-			else 
-			{
-				mGPUClass = GPU_CLASS_4;
-			}
-			if (gGLManager.mIsIntel && mGPUClass > GPU_CLASS_1)
-			{
-				// Intels are generally weaker then other GPUs despite having advanced features
-				mGPUClass = (EGPUClass)(mGPUClass - 1);
-			}
-	#endif
-		}
-		else if (gGLManager.mGLVersion <= 2.f)
-		{
-			mGPUClass = GPU_CLASS_0;
-		}
-		else if (gGLManager.mGLVersion <= 3.f)
-		{
-			mGPUClass = GPU_CLASS_1;
-		}
-		else if (gbps <= class0_gbps)
-		{
 			mGPUClass = GPU_CLASS_0;
+	#endif
 		}
-		else if (gbps <= class0_gbps*2.f)
+		else if (gbps <= class1_gbps)
 		{
 			mGPUClass = GPU_CLASS_1;
 		}
-		else if (gbps <= class0_gbps*4.f)
+		else if (gbps <= class1_gbps *2.f)
 		{
 			mGPUClass = GPU_CLASS_2;
 		}
-		else if (gbps <= class0_gbps*8.f)
+		else if (gbps <= class1_gbps*4.f)
 		{
 			mGPUClass = GPU_CLASS_3;
 		}
-		else if (gbps <= class0_gbps*16.f)
+		else if (gbps <= class1_gbps*8.f)
 		{
 			mGPUClass = GPU_CLASS_4;
 		}
@@ -628,7 +592,7 @@ void LLFeatureManager::applyFeatures(bool skipFeatures)
 void LLFeatureManager::setGraphicsLevel(U32 level, bool skipFeatures)
 {
     LLViewerShaderMgr::sSkipReload = true;
-
+    flush_glerror(); // Whatever may have already happened (e.g., to cause us to change), don't let confuse it with new initializations.
     applyBaseMasks();
 
     // if we're passed an invalid level, default to "Low"
@@ -700,22 +664,18 @@ void LLFeatureManager::applyBaseMasks()
 	{
 		maskFeatures("TexUnit8orLess");
 	}
-	if (gGLManager.mHasMapBufferRange)
-	{
-		maskFeatures("MapBufferRange");
-	}
 	if (gGLManager.mVRAM > 512)
 	{
 		maskFeatures("VRAMGT512");
 	}
-
-#if LL_DARWIN
-	const LLOSInfo& osInfo = LLOSInfo::instance();
-	if (osInfo.mMajorVer == 10 && osInfo.mMinorVer < 7)
-	{
-		maskFeatures("OSX_10_6_8");
-	}
-#endif
+    if (gGLManager.mVRAM < 2048)
+    {
+        maskFeatures("VRAMLT2GB");
+    }
+    if (gGLManager.mGLVersion < 3.99f)
+    {
+        maskFeatures("GL3");
+    }
 
 	// now mask by gpu string
 	// Replaces ' ' with '_' in mGPUString to deal with inability for parser to handle spaces