Performance improvements. Faster threadsaferefcount, faster instancetracker, use hashtable and pre-hashed strings for GLSL uniform lookup, and use dup_handles curl interface to avoid re-initing ares resolvers expensively.

17 files changed, 445 insertions, 249 deletions

diff --git a/indra/llmath/llvolume.cpp b/indra/llmath/llvolume.cpp
index 02c8d2b86f..c476f8593b 100644
--- a/indra/llmath/llvolume.cpp
+++ b/indra/llmath/llvolume.cpp
@@ -5187,7 +5187,8 @@ LLVolumeFace::LLVolumeFace() :
 	mTexCoords(NULL),
 	mIndices(NULL),
 	mWeights(NULL),
-	mOctree(NULL)
+	mOctree(NULL),
+	mOptimized(FALSE)
 {
 	mExtents = (LLVector4a*) ll_aligned_malloc_16(sizeof(LLVector4a)*3);
 	mExtents[0].splat(-0.5f);
@@ -5294,6 +5295,8 @@ LLVolumeFace& LLVolumeFace::operator=(const LLVolumeFace& src)
 		LLVector4a::memcpyNonAliased16((F32*) mIndices, (F32*) src.mIndices, idx_size);
 	}
 	
+	mOptimized = src.mOptimized;
+
 	//delete 
 	return *this;
 }
@@ -5517,14 +5520,14 @@ class LLVCacheVertexData
 public:
 	S32 mIdx;
 	S32 mCacheTag;
-	F32 mScore;
+	F64 mScore;
 	U32 mActiveTriangles;
 	std::vector<LLVCacheTriangleData*> mTriangles;
 
 	LLVCacheVertexData()
 	{
 		mCacheTag = -1;
-		mScore = 0.f;
+		mScore = 0.0;
 		mActiveTriangles = 0;
 		mIdx = -1;
 	}
@@ -5534,13 +5537,13 @@ class LLVCacheTriangleData
 {
 public:
 	bool mActive;
-	F32 mScore;
+	F64 mScore;
 	LLVCacheVertexData* mVertex[3];
 
 	LLVCacheTriangleData()
 	{
 		mActive = true;
-		mScore = 0.f;
+		mScore = 0.0;
 		mVertex[0] = mVertex[1] = mVertex[2] = NULL;
 	}
 
@@ -5551,7 +5554,7 @@ public:
 		{
 			if (mVertex[i])
 			{
-				llassert_always(mVertex[i]->mActiveTriangles > 0);
+				llassert(mVertex[i]->mActiveTriangles > 0);
 				mVertex[i]->mActiveTriangles--;
 			}
 		}
@@ -5563,44 +5566,44 @@ public:
 	}
 };
 
-const F32 FindVertexScore_CacheDecayPower = 1.5f;
-const F32 FindVertexScore_LastTriScore = 0.75f;
-const F32 FindVertexScore_ValenceBoostScale = 2.0f;
-const F32 FindVertexScore_ValenceBoostPower = 0.5f;
+const F64 FindVertexScore_CacheDecayPower = 1.5;
+const F64 FindVertexScore_LastTriScore = 0.75;
+const F64 FindVertexScore_ValenceBoostScale = 2.0;
+const F64 FindVertexScore_ValenceBoostPower = 0.5;
 const U32 MaxSizeVertexCache = 32;
+const F64 FindVertexScore_Scaler = 1.0/(MaxSizeVertexCache-3);
 
-F32 find_vertex_score(LLVCacheVertexData& data)
+F64 find_vertex_score(LLVCacheVertexData& data)
 {
-	if (data.mActiveTriangles == 0)
-	{ //no triangle references this vertex
-		return -1.f;
-	}
+	F64 score = -1.0;
 
-	F32 score = 0.f;
-
-	S32 cache_idx = data.mCacheTag;
+	if (data.mActiveTriangles >= 0)
+	{ 
+		score = 0.0;
+		
+		S32 cache_idx = data.mCacheTag;
 
-	if (cache_idx < 0)
-	{
-		//not in cache
-	}
-	else
-	{
-		if (cache_idx < 3)
-		{ //vertex was in the last triangle
-			score = FindVertexScore_LastTriScore;
+		if (cache_idx < 0)
+		{
+			//not in cache
 		}
 		else
-		{ //more points for being higher in the cache
-			F32 scaler = 1.f/(MaxSizeVertexCache-3);
-			score = 1.f-((cache_idx-3)*scaler);
-			score = powf(score, FindVertexScore_CacheDecayPower);
+		{
+			if (cache_idx < 3)
+			{ //vertex was in the last triangle
+				score = FindVertexScore_LastTriScore;
+			}
+			else
+			{ //more points for being higher in the cache
+				score = 1.0-((cache_idx-3)*FindVertexScore_Scaler);
+				score = pow(score, FindVertexScore_CacheDecayPower);
+			}
 		}
-	}
 
-	//bonus points for having low valence
-	F32 valence_boost = powf((F32)data.mActiveTriangles, -FindVertexScore_ValenceBoostPower);
-	score += FindVertexScore_ValenceBoostScale * valence_boost;
+		//bonus points for having low valence
+		F64 valence_boost = pow((F64)data.mActiveTriangles, -FindVertexScore_ValenceBoostPower);
+		score += FindVertexScore_ValenceBoostScale * valence_boost;
+	}
 
 	return score;
 }
@@ -5720,7 +5723,7 @@ public:
 			if (mCache[i])
 			{
 				mCache[i]->mScore = find_vertex_score(*(mCache[i]));
-				llassert_always(mCache[i]->mCacheTag == i);
+				llassert(mCache[i]->mCacheTag == i);
 			}
 		}
 
@@ -5728,11 +5731,14 @@ public:
 		//update triangle scores
 		for (U32 i = 0; i < MaxSizeVertexCache+3; ++i)
 		{
-			if (mCache[i])
+			LLVCacheVertexData* data = mCache[i];
+			if (data)
 			{
-				for (U32 j = 0; j < mCache[i]->mTriangles.size(); ++j)
+				U32 count = data->mTriangles.size();
+
+				for (U32 j = 0; j < count; ++j)
 				{
-					LLVCacheTriangleData* tri = mCache[i]->mTriangles[j];
+					LLVCacheTriangleData* tri = data->mTriangles[j];
 					if (tri->mActive)
 					{
 						tri->mScore = tri->mVertex[0]->mScore;
@@ -5753,7 +5759,7 @@ public:
 		{
 			if (mCache[i])
 			{
-				llassert_always(mCache[i]->mCacheTag == -1);
+				llassert(mCache[i]->mCacheTag == -1);
 				mCache[i] = NULL;
 			}
 		}
@@ -5765,6 +5771,9 @@ void LLVolumeFace::cacheOptimize()
 { //optimize for vertex cache according to Forsyth method: 
   // http://home.comcast.net/~tom_forsyth/papers/fast_vert_cache_opt.html
 	
+	llassert(!mOptimized);
+	mOptimized = TRUE;
+
 	LLVCacheLRU cache;
 	
 	if (mNumVertices < 3)
@@ -5810,12 +5819,14 @@ void LLVolumeFace::cacheOptimize()
 
 	for (U32 i = 0; i < mNumVertices; i++)
 	{ //initialize score values (no cache -- might try a fifo cache here)
-		vertex_data[i].mScore = find_vertex_score(vertex_data[i]);
-		vertex_data[i].mActiveTriangles = vertex_data[i].mTriangles.size();
+		LLVCacheVertexData& data = vertex_data[i];
+
+		data.mScore = find_vertex_score(data);
+		data.mActiveTriangles = data.mTriangles.size();
 
-		for (U32 j = 0; j < vertex_data[i].mTriangles.size(); ++j)
+		for (U32 j = 0; j < data.mActiveTriangles; ++j)
 		{
-			vertex_data[i].mTriangles[j]->mScore += vertex_data[i].mScore;
+			data.mTriangles[j]->mScore += data.mScore;
 		}
 	}
 
diff --git a/indra/llmath/llvolume.h b/indra/llmath/llvolume.h
index c845556557..99158c1c44 100644
--- a/indra/llmath/llvolume.h
+++ b/indra/llmath/llvolume.h
@@ -933,6 +933,9 @@ public:
 
 	LLOctreeNode<LLVolumeTriangle>* mOctree;
 
+	//whether or not face has been cache optimized
+	BOOL mOptimized;
+
 private:
 	BOOL createUnCutCubeCap(LLVolume* volume, BOOL partial_build = FALSE);
 	BOOL createCap(LLVolume* volume, BOOL partial_build = FALSE);
diff --git a/indra/llrender/llgl.cpp b/indra/llrender/llgl.cpp
index 9d06dd6904..89f1f36297 100644
--- a/indra/llrender/llgl.cpp
+++ b/indra/llrender/llgl.cpp
@@ -59,6 +59,7 @@ BOOL gDebugGL = FALSE;
 BOOL gClothRipple = FALSE;
 BOOL gHeadlessClient = FALSE;
 BOOL gGLActive = FALSE;
+BOOL gGLDebugLoggingEnabled = TRUE;
 
 static const std::string HEADLESS_VENDOR_STRING("Linden Lab");
 static const std::string HEADLESS_RENDERER_STRING("Headless");
@@ -72,6 +73,7 @@ std::ofstream gFailLog;
 #define APIENTRY
 #endif
 
+
 void APIENTRY gl_debug_callback(GLenum source,
                                 GLenum type,
                                 GLuint id,
@@ -80,22 +82,25 @@ void APIENTRY gl_debug_callback(GLenum source,
                                 const GLchar* message,
                                 GLvoid* userParam)
 {
-	if (severity == GL_DEBUG_SEVERITY_HIGH_ARB)
-	{
-		llwarns << "----- GL ERROR --------" << llendl;
-	}
-	else
+	if (gGLDebugLoggingEnabled)
 	{
-		llwarns << "----- GL WARNING -------" << llendl;
-	}
-	llwarns << "Type: " << std::hex << type << llendl;
-	llwarns << "ID: " << std::hex << id << llendl;
-	llwarns << "Severity: " << std::hex << severity << llendl;
-	llwarns << "Message: " << message << llendl;
-	llwarns << "-----------------------" << llendl;
-	if (severity == GL_DEBUG_SEVERITY_HIGH_ARB)
-	{
-		llerrs << "Halting on GL Error" << llendl;
+		if (severity == GL_DEBUG_SEVERITY_HIGH_ARB)
+		{
+			llwarns << "----- GL ERROR --------" << llendl;
+		}
+		else
+		{
+			llwarns << "----- GL WARNING -------" << llendl;
+		}
+		llwarns << "Type: " << std::hex << type << llendl;
+		llwarns << "ID: " << std::hex << id << llendl;
+		llwarns << "Severity: " << std::hex << severity << llendl;
+		llwarns << "Message: " << message << llendl;
+		llwarns << "-----------------------" << llendl;
+		if (severity == GL_DEBUG_SEVERITY_HIGH_ARB)
+		{
+			llerrs << "Halting on GL Error" << llendl;
+		}
 	}
 }
 #endif
@@ -253,6 +258,7 @@ PFNGLBEGINTRANSFORMFEEDBACKPROC glBeginTransformFeedback = NULL;
 PFNGLENDTRANSFORMFEEDBACKPROC glEndTransformFeedback = NULL;
 PFNGLTRANSFORMFEEDBACKVARYINGSPROC glTransformFeedbackVaryings = NULL;
 PFNGLBINDBUFFERRANGEPROC glBindBufferRange = NULL;
+PFNGLBINDBUFFERBASEPROC glBindBufferBase = NULL;
 
 //GL_ARB_debug_output
 PFNGLDEBUGMESSAGECONTROLARBPROC glDebugMessageControlARB = NULL;
@@ -1224,6 +1230,7 @@ void LLGLManager::initExtensions()
 		glEndTransformFeedback = (PFNGLENDTRANSFORMFEEDBACKPROC) GLH_EXT_GET_PROC_ADDRESS("glEndTransformFeedback");
 		glTransformFeedbackVaryings = (PFNGLTRANSFORMFEEDBACKVARYINGSPROC) GLH_EXT_GET_PROC_ADDRESS("glTransformFeedbackVaryings");
 		glBindBufferRange = (PFNGLBINDBUFFERRANGEPROC) GLH_EXT_GET_PROC_ADDRESS("glBindBufferRange");
+		glBindBufferBase = (PFNGLBINDBUFFERBASEPROC) GLH_EXT_GET_PROC_ADDRESS("glBindBufferBase");
 	}
 	if (mHasDebugOutput)
 	{
diff --git a/indra/llrender/llglheaders.h b/indra/llrender/llglheaders.h
index 509de51f4d..a92ed428da 100644
--- a/indra/llrender/llglheaders.h
+++ b/indra/llrender/llglheaders.h
@@ -533,6 +533,7 @@ extern PFNGLBEGINTRANSFORMFEEDBACKPROC glBeginTransformFeedback;
 extern PFNGLENDTRANSFORMFEEDBACKPROC glEndTransformFeedback;
 extern PFNGLTRANSFORMFEEDBACKVARYINGSPROC glTransformFeedbackVaryings;
 extern PFNGLBINDBUFFERRANGEPROC glBindBufferRange;
+extern PFNGLBINDBUFFERBASEPROC glBindBufferBase;
 
 
 #elif LL_WINDOWS
@@ -771,6 +772,7 @@ extern PFNGLBEGINTRANSFORMFEEDBACKPROC glBeginTransformFeedback;
 extern PFNGLENDTRANSFORMFEEDBACKPROC glEndTransformFeedback;
 extern PFNGLTRANSFORMFEEDBACKVARYINGSPROC glTransformFeedbackVaryings;
 extern PFNGLBINDBUFFERRANGEPROC glBindBufferRange;
+extern PFNGLBINDBUFFERBASEPROC glBindBufferBase;
 
 //GL_ARB_debug_output
 extern PFNGLDEBUGMESSAGECONTROLARBPROC glDebugMessageControlARB;
diff --git a/indra/llrender/llrender.cpp b/indra/llrender/llrender.cpp
index a12e9caf4c..5801946a74 100644
--- a/indra/llrender/llrender.cpp
+++ b/indra/llrender/llrender.cpp
@@ -225,26 +225,15 @@ void LLTexUnit::disable(void)
 bool LLTexUnit::bind(LLTexture* texture, bool for_rendering, bool forceBind)
 {
 	stop_glerror();
-	if (mIndex < 0) return false;
-
+	if (mIndex >= 0)
+	{
 	gGL.flush();
 
 	LLImageGL* gl_tex = NULL ;
-	if (texture == NULL || !(gl_tex = texture->getGLTexture()))
+		if (texture != NULL && (gl_tex = texture->getGLTexture()))
 	{
-		llwarns << "NULL LLTexUnit::bind texture" << llendl;
-		return false;
-	}
-
-	if (!gl_tex->getTexName()) //if texture does not exist
+			if (gl_tex->getTexName()) //if texture exists
 	{
-		//if deleted, will re-generate it immediately
-		texture->forceImmediateUpdate() ;
-
-		gl_tex->forceUpdateBindStats() ;
-		return texture->bindDefaultImage(mIndex);
-	}
-
 	//in audit, replace the selected texture by the default one.
 	if ((mCurrTexture != gl_tex->getTexName()) || forceBind)
 	{
@@ -265,6 +254,27 @@ bool LLTexUnit::bind(LLTexture* texture, bool for_rendering, bool forceBind)
 			setTextureFilteringOption(gl_tex->mFilterOption);
 		}
 	}
+			}
+			else
+			{
+				//if deleted, will re-generate it immediately
+				texture->forceImmediateUpdate() ;
+
+				gl_tex->forceUpdateBindStats() ;
+				return texture->bindDefaultImage(mIndex);
+			}
+		}
+		else
+		{
+			llwarns << "NULL LLTexUnit::bind texture" << llendl;
+			return false;
+		}
+	}
+	else
+	{ // mIndex < 0
+		return false;
+	}
+
 	return true;
 }
 
diff --git a/indra/llrender/llvertexbuffer.cpp b/indra/llrender/llvertexbuffer.cpp
index dfbd8cd4ee..f152911b24 100644
--- a/indra/llrender/llvertexbuffer.cpp
+++ b/indra/llrender/llvertexbuffer.cpp
@@ -85,6 +85,7 @@ const U32 LL_VBO_POOL_SEED_COUNT = vbo_block_index(LL_VBO_POOL_MAX_SEED_SIZE);
 //static
 LLVBOPool LLVertexBuffer::sStreamVBOPool(GL_STREAM_DRAW_ARB, GL_ARRAY_BUFFER_ARB);
 LLVBOPool LLVertexBuffer::sDynamicVBOPool(GL_DYNAMIC_DRAW_ARB, GL_ARRAY_BUFFER_ARB);
+LLVBOPool LLVertexBuffer::sDynamicCopyVBOPool(GL_DYNAMIC_COPY_ARB, GL_ARRAY_BUFFER_ARB);
 LLVBOPool LLVertexBuffer::sStreamIBOPool(GL_STREAM_DRAW_ARB, GL_ELEMENT_ARRAY_BUFFER_ARB);
 LLVBOPool LLVertexBuffer::sDynamicIBOPool(GL_DYNAMIC_DRAW_ARB, GL_ELEMENT_ARRAY_BUFFER_ARB);
 
@@ -199,7 +200,10 @@ volatile U8* LLVBOPool::allocate(U32& name, U32 size, bool for_seed)
 		if (LLVertexBuffer::sDisableVBOMapping || mUsage != GL_DYNAMIC_DRAW_ARB)
 		{
 			glBufferDataARB(mType, size, 0, mUsage);
-			ret = (U8*) ll_aligned_malloc_16(size);
+			if (mUsage != GL_DYNAMIC_COPY_ARB)
+			{ //data will be provided by application
+				ret = (U8*) ll_aligned_malloc_16(size);
+			}
 		}
 		else
 		{ //always use a true hint of static draw when allocating non-client-backed buffers
@@ -393,6 +397,7 @@ void LLVertexBuffer::seedPools()
 {
 	sStreamVBOPool.seedPool();
 	sDynamicVBOPool.seedPool();
+	sDynamicCopyVBOPool.seedPool();
 	sStreamIBOPool.seedPool();
 	sDynamicIBOPool.seedPool();
 }
@@ -875,6 +880,7 @@ void LLVertexBuffer::cleanupClass()
 	sDynamicIBOPool.cleanup();
 	sStreamVBOPool.cleanup();
 	sDynamicVBOPool.cleanup();
+	sDynamicCopyVBOPool.cleanup();
 
 	if(sPrivatePoolp)
 	{
@@ -911,13 +917,16 @@ S32 LLVertexBuffer::determineUsage(S32 usage)
 	
 	if (ret_usage && ret_usage != GL_STREAM_DRAW_ARB)
 	{ //only stream_draw and dynamic_draw are supported when using VBOs, dynamic draw is the default
-		if (sDisableVBOMapping)
-		{ //always use stream draw if VBO mapping is disabled
-			ret_usage = GL_STREAM_DRAW_ARB;
-		}
-		else
+		if (ret_usage != GL_DYNAMIC_COPY_ARB)
 		{
-			ret_usage = GL_DYNAMIC_DRAW_ARB;
+			if (sDisableVBOMapping)
+			{ //always use stream draw if VBO mapping is disabled
+				ret_usage = GL_STREAM_DRAW_ARB;
+			}
+			else
+			{
+				ret_usage = GL_DYNAMIC_DRAW_ARB;
+			}
 		}
 	}
 	
@@ -1067,10 +1076,15 @@ void LLVertexBuffer::genBuffer(U32 size)
 	{
 		mMappedData = sStreamVBOPool.allocate(mGLBuffer, mSize);
 	}
-	else
+	else if (mUsage == GL_DYNAMIC_DRAW_ARB)
 	{
 		mMappedData = sDynamicVBOPool.allocate(mGLBuffer, mSize);
 	}
+	else
+	{
+		mMappedData = sDynamicCopyVBOPool.allocate(mGLBuffer, mSize);
+	}
+
 	
 	sGLCount++;
 }
@@ -1820,6 +1834,8 @@ void LLVertexBuffer::unmapBuffer()
 
 	if (mMappedData && mVertexLocked)
 	{
+		llassert(mUsage != GL_DYNAMIC_COPY_ARB);
+		
 		LLFastTimer t(FTM_VBO_UNMAP);
 		bindGLBuffer(true);
 		updated_all = mIndexLocked; //both vertex and index buffers done updating
@@ -2094,22 +2110,15 @@ bool LLVertexBuffer::bindGLBuffer(bool force_bind)
 
 	if (useVBOs() && (force_bind || (mGLBuffer && (mGLBuffer != sGLRenderBuffer || !sVBOActive))))
 	{
-		LLFastTimer t(FTM_BIND_GL_BUFFER);
-		/*if (sMapped)
-		{
-			llerrs << "VBO bound while another VBO mapped!" << llendl;
-		}*/
+		//LLFastTimer t(FTM_BIND_GL_BUFFER); <-- this timer is showing up as a hotspot (irony)
+		
 		glBindBufferARB(GL_ARRAY_BUFFER_ARB, mGLBuffer);
 		sGLRenderBuffer = mGLBuffer;
 		sBindCount++;
 		sVBOActive = true;
 
-		if (mGLArray)
-		{
-			llassert(sGLRenderArray == mGLArray);
-			//mCachedRenderBuffer = mGLBuffer;
-		}
-
+		llassert(!mGLArray || sGLRenderArray == mGLArray);
+		
 		ret = true;
 	}
 
diff --git a/indra/llrender/llvertexbuffer.h b/indra/llrender/llvertexbuffer.h
index 11fa4ab6a0..a3400ae80c 100644
--- a/indra/llrender/llvertexbuffer.h
+++ b/indra/llrender/llvertexbuffer.h
@@ -125,9 +125,10 @@ public:
 
 	static LLVBOPool sStreamVBOPool;
 	static LLVBOPool sDynamicVBOPool;
+	static LLVBOPool sDynamicCopyVBOPool;
 	static LLVBOPool sStreamIBOPool;
 	static LLVBOPool sDynamicIBOPool;
-
+	
 	static std::list<U32> sAvailableVAOName;
 	static U32 sCurVAOName;
 
diff --git a/indra/newview/llagent.cpp b/indra/newview/llagent.cpp
index b6fd7bc9c2..f0eee24fef 100755
--- a/indra/newview/llagent.cpp
+++ b/indra/newview/llagent.cpp
@@ -3062,6 +3062,30 @@ void LLAgent::sendAnimationRequest(const LLUUID &anim_id, EAnimRequest request)
 	sendReliableMessage();
 }
 
+// Send a message to the region to stop the NULL animation state
+// This will reset animation state overrides for the agent.
+void LLAgent::sendAnimationStateReset()
+{
+	if (gAgentID.isNull() || !mRegionp)
+	{
+		return;
+	}
+
+	LLMessageSystem* msg = gMessageSystem;
+	msg->newMessageFast(_PREHASH_AgentAnimation);
+	msg->nextBlockFast(_PREHASH_AgentData);
+	msg->addUUIDFast(_PREHASH_AgentID, getID());
+	msg->addUUIDFast(_PREHASH_SessionID, getSessionID());
+
+	msg->nextBlockFast(_PREHASH_AnimationList);
+	msg->addUUIDFast(_PREHASH_AnimID, LLUUID::null );
+	msg->addBOOLFast(_PREHASH_StartAnim, FALSE);
+
+	msg->nextBlockFast(_PREHASH_PhysicalAvatarEventList);
+	msg->addBinaryDataFast(_PREHASH_TypeData, NULL, 0);
+	sendReliableMessage();
+}
+
 void LLAgent::sendWalkRun(bool running)
 {
 	LLMessageSystem* msgsys = gMessageSystem;
@@ -4140,6 +4164,8 @@ void LLAgent::stopCurrentAnimations()
 	// avatar, propagating this change back to the server.
 	if (isAgentAvatarValid())
 	{
+		LLDynamicArray<LLUUID> anim_ids;
+
 		for ( LLVOAvatar::AnimIterator anim_it =
 			      gAgentAvatarp->mPlayingAnimations.begin();
 		      anim_it != gAgentAvatarp->mPlayingAnimations.end();
@@ -4157,10 +4183,15 @@ void LLAgent::stopCurrentAnimations()
 				// stop this animation locally
 				gAgentAvatarp->stopMotion(anim_it->first, TRUE);
 				// ...and tell the server to tell everyone.
-				sendAnimationRequest(anim_it->first, ANIM_REQUEST_STOP);
+				anim_ids.push_back(anim_it->first);
 			}
 		}
 
+		sendAnimationRequests(anim_ids, ANIM_REQUEST_STOP);
+
+		// Tell the region to clear any animation state overrides.
+		sendAnimationStateReset();
+
 		// re-assert at least the default standing animation, because
 		// viewers get confused by avs with no associated anims.
 		sendAnimationRequest(ANIM_AGENT_STAND,
diff --git a/indra/newview/llagent.h b/indra/newview/llagent.h
index 99904e118c..bec9352f5f 100644
--- a/indra/newview/llagent.h
+++ b/indra/newview/llagent.h
@@ -431,6 +431,8 @@ public:
 	void			onAnimStop(const LLUUID& id);
 	void			sendAnimationRequests(LLDynamicArray<LLUUID> &anim_ids, EAnimRequest request);
 	void			sendAnimationRequest(const LLUUID &anim_id, EAnimRequest request);
+	void			sendAnimationStateReset();
+
 	void			endAnimationUpdateUI();
 	void			unpauseAnimation() { mPauseRequest = NULL; }
 	BOOL			getCustomAnim() const { return mCustomAnim; }
diff --git a/indra/newview/lldrawpoolbump.cpp b/indra/newview/lldrawpoolbump.cpp
index 4137084ebe..7e95046479 100644
--- a/indra/newview/lldrawpoolbump.cpp
+++ b/indra/newview/lldrawpoolbump.cpp
@@ -461,6 +461,8 @@ void LLDrawPoolBump::unbindCubeMap(LLGLSLShader* shader, S32 shader_level, S32&
 				}
 			}
 		}
+        // Moved below shader->disableTexture call to avoid false alarms from auto-re-enable of textures on stage 0
+        // MAINT-755
 		cube_map->disable();
 		cube_map->restoreMatrix();
 	}
diff --git a/indra/newview/llface.cpp b/indra/newview/llface.cpp
index 3c7a49d5ce..43d21137b5 100755
--- a/indra/newview/llface.cpp
+++ b/indra/newview/llface.cpp
@@ -51,7 +51,9 @@
 #include "llviewerregion.h"
 #include "llviewerwindow.h"
 #include "llviewershadermgr.h"
+#include "llvoavatar.h"
 
+extern BOOL gGLDebugLoggingEnabled;
 
 #define LL_MAX_INDICES_COUNT 1000000
 
@@ -328,6 +330,12 @@ void LLFace::dirtyTexture()
 		if (vobj)
 		{
 			vobj->mLODChanged = TRUE;
+
+			LLVOAvatar* avatar = vobj->getAvatar();
+			if (avatar)
+			{ //avatar render cost may have changed
+				avatar->updateVisualComplexity();
+			}
 		}
 		gPipeline.markRebuild(drawablep, LLDrawable::REBUILD_VOLUME, FALSE);
 	}		
@@ -1162,6 +1170,15 @@ static LLFastTimer::DeclareTimer FTM_FACE_GEOM_COLOR("Color");
 static LLFastTimer::DeclareTimer FTM_FACE_GEOM_EMISSIVE("Emissive");
 static LLFastTimer::DeclareTimer FTM_FACE_GEOM_WEIGHTS("Weights");
 static LLFastTimer::DeclareTimer FTM_FACE_GEOM_BINORMAL("Binormal");
+
+static LLFastTimer::DeclareTimer FTM_FACE_GEOM_FEEDBACK("Face Feedback");
+static LLFastTimer::DeclareTimer FTM_FACE_GEOM_FEEDBACK_POSITION("Feedback Position");
+static LLFastTimer::DeclareTimer FTM_FACE_GEOM_FEEDBACK_NORMAL("Feedback  Normal");
+static LLFastTimer::DeclareTimer FTM_FACE_GEOM_FEEDBACK_TEXTURE("Feedback  Texture");
+static LLFastTimer::DeclareTimer FTM_FACE_GEOM_FEEDBACK_COLOR("Feedback  Color");
+static LLFastTimer::DeclareTimer FTM_FACE_GEOM_FEEDBACK_EMISSIVE("Feedback  Emissive");
+static LLFastTimer::DeclareTimer FTM_FACE_GEOM_FEEDBACK_BINORMAL("Feedback Binormal");
+
 static LLFastTimer::DeclareTimer FTM_FACE_GEOM_INDEX("Index");
 static LLFastTimer::DeclareTimer FTM_FACE_GEOM_INDEX_TAIL("Tail");
 static LLFastTimer::DeclareTimer FTM_FACE_POSITION_STORE("Pos");
@@ -1385,12 +1402,14 @@ BOOL LLFace::getGeometryVolume(const LLVolume& volume,
 
 #ifdef GL_TRANSFORM_FEEDBACK_BUFFER
 	if (use_transform_feedback &&
+		mVertexBuffer->getUsage() == GL_DYNAMIC_COPY_ARB &&
 		gTransformPositionProgram.mProgramObject && //transform shaders are loaded
 		mVertexBuffer->useVBOs() && //target buffer is in VRAM
 		!rebuild_weights && //TODO: add support for weights
 		!volume.isUnique()) //source volume is NOT flexi
 	{ //use transform feedback to pack vertex buffer
-
+		//gGLDebugLoggingEnabled = TRUE;
+		LLFastTimer t(FTM_FACE_GEOM_FEEDBACK);
 		LLVertexBuffer* buff = (LLVertexBuffer*) vf.mVertexBuffer.get();
 
 		if (vf.mVertexBuffer.isNull() || buff->getNumVerts() != vf.mNumVertices)
@@ -1407,7 +1426,7 @@ BOOL LLFace::getGeometryVolume(const LLVolume& volume,
 
 		if (rebuild_pos)
 		{
-			LLFastTimer t(FTM_FACE_GEOM_POSITION);
+			LLFastTimer t(FTM_FACE_GEOM_FEEDBACK_POSITION);
 			gTransformPositionProgram.bind();
 
 			mVertexBuffer->bindForFeedback(0, LLVertexBuffer::TYPE_VERTEX, mGeomIndex, mGeomCount);
@@ -1420,7 +1439,7 @@ BOOL LLFace::getGeometryVolume(const LLVolume& volume,
 			vp[1] = 0;
 			vp[2] = 0;
 			vp[3] = 0;
-						
+			
 			gTransformPositionProgram.uniform1i(sTextureIndexIn, val);
 			glBeginTransformFeedback(GL_POINTS);
 			buff->setBuffer(LLVertexBuffer::MAP_VERTEX);
@@ -1432,7 +1451,7 @@ BOOL LLFace::getGeometryVolume(const LLVolume& volume,
 
 		if (rebuild_color)
 		{
-			LLFastTimer t(FTM_FACE_GEOM_COLOR);
+			LLFastTimer t(FTM_FACE_GEOM_FEEDBACK_COLOR);
 			gTransformColorProgram.bind();
 			
 			mVertexBuffer->bindForFeedback(0, LLVertexBuffer::TYPE_COLOR, mGeomIndex, mGeomCount);
@@ -1448,7 +1467,7 @@ BOOL LLFace::getGeometryVolume(const LLVolume& volume,
 
 		if (rebuild_emissive)
 		{
-			LLFastTimer t(FTM_FACE_GEOM_EMISSIVE);
+			LLFastTimer t(FTM_FACE_GEOM_FEEDBACK_EMISSIVE);
 			gTransformColorProgram.bind();
 			
 			mVertexBuffer->bindForFeedback(0, LLVertexBuffer::TYPE_EMISSIVE, mGeomIndex, mGeomCount);
@@ -1469,7 +1488,7 @@ BOOL LLFace::getGeometryVolume(const LLVolume& volume,
 
 		if (rebuild_normal)
 		{
-			LLFastTimer t(FTM_FACE_GEOM_NORMAL);
+			LLFastTimer t(FTM_FACE_GEOM_FEEDBACK_NORMAL);
 			gTransformNormalProgram.bind();
 			
 			mVertexBuffer->bindForFeedback(0, LLVertexBuffer::TYPE_NORMAL, mGeomIndex, mGeomCount);
@@ -1482,7 +1501,7 @@ BOOL LLFace::getGeometryVolume(const LLVolume& volume,
 
 		if (rebuild_binormal)
 		{
-			LLFastTimer t(FTM_FACE_GEOM_BINORMAL);
+			LLFastTimer t(FTM_FACE_GEOM_FEEDBACK_BINORMAL);
 			gTransformBinormalProgram.bind();
 			
 			mVertexBuffer->bindForFeedback(0, LLVertexBuffer::TYPE_BINORMAL, mGeomIndex, mGeomCount);
@@ -1495,7 +1514,7 @@ BOOL LLFace::getGeometryVolume(const LLVolume& volume,
 
 		if (rebuild_tcoord)
 		{
-			LLFastTimer t(FTM_FACE_GEOM_TEXTURE);
+			LLFastTimer t(FTM_FACE_GEOM_FEEDBACK_TEXTURE);
 			gTransformTexCoordProgram.bind();
 			
 			mVertexBuffer->bindForFeedback(0, LLVertexBuffer::TYPE_TEXCOORD0, mGeomIndex, mGeomCount);
@@ -1518,13 +1537,13 @@ BOOL LLFace::getGeometryVolume(const LLVolume& volume,
 		}
 
 		glBindBufferARB(GL_TRANSFORM_FEEDBACK_BUFFER, 0);
-
 		gGL.popMatrix();
 
 		if (cur_shader)
 		{
 			cur_shader->bind();
 		}
+		//gGLDebugLoggingEnabled = FALSE;
 	}
 	else
 #endif
diff --git a/indra/newview/llmeshrepository.cpp b/indra/newview/llmeshrepository.cpp
index 1223615079..ae48898e82 100755
--- a/indra/newview/llmeshrepository.cpp
+++ b/indra/newview/llmeshrepository.cpp
@@ -588,7 +588,7 @@ void LLMeshRepoThread::run()
 					if (!fetchMeshLOD(req.mMeshParams, req.mLOD, count))//failed, resubmit
 					{
 						mMutex->lock();
-						mLODReqQ.push(req) ; 
+						mLODReqQ.push(req); 
 						mMutex->unlock();
 					}
 				}
@@ -1200,8 +1200,7 @@ bool LLMeshRepoThread::headerReceived(const LLVolumeParams& mesh_params, U8* dat
 			LLMutexLock lock(mHeaderMutex);
 			mMeshHeaderSize[mesh_id] = header_size;
 			mMeshHeader[mesh_id] = header;
-			}
-
+		}
 
 		LLMutexLock lock(mMutex); // make sure only one thread access mPendingLOD at the same time.
 
diff --git a/indra/newview/llvoavatar.cpp b/indra/newview/llvoavatar.cpp
index 62e93b7a53..4efd59685e 100755
--- a/indra/newview/llvoavatar.cpp
+++ b/indra/newview/llvoavatar.cpp
@@ -688,6 +688,8 @@ LLVOAvatar::LLVOAvatar(const LLUUID& id,
 	mFullyLoaded(FALSE),
 	mPreviousFullyLoaded(FALSE),
 	mFullyLoadedInitialized(FALSE),
+	mVisualComplexity(0),
+	mVisualComplexityStale(TRUE),
 	mSupportsAlphaLayers(FALSE),
 	mLoadedCallbacksPaused(FALSE),
 	mHasPelvisOffset( FALSE ),
@@ -3434,12 +3436,23 @@ void LLVOAvatar::slamPosition()
 
 bool LLVOAvatar::isVisuallyMuted() const
 {
-	static LLCachedControl<U32> max_attachment_bytes(gSavedSettings, "RenderAutoMuteByteLimit");
-	static LLCachedControl<F32> max_attachment_area(gSavedSettings, "RenderAutoMuteSurfaceAreaLimit");
+	bool ret = false;
+
+	if (!isSelf())
+	{
+		static LLCachedControl<U32> max_attachment_bytes(gSavedSettings, "RenderAutoMuteByteLimit");
+		static LLCachedControl<F32> max_attachment_area(gSavedSettings, "RenderAutoMuteSurfaceAreaLimit");
+		static LLCachedControl<U32> max_render_cost(gSavedSettings, "RenderAutoMuteRenderCostLimit");
 	
-	return LLMuteList::getInstance()->isMuted(getID()) ||
+		U32 max_cost = (U32) (max_render_cost*(LLVOAvatar::sLODFactor+0.5));
+
+		ret = LLMuteList::getInstance()->isMuted(getID()) ||
 			(mAttachmentGeometryBytes > max_attachment_bytes && max_attachment_bytes > 0) ||
-			(mAttachmentSurfaceArea > max_attachment_area && max_attachment_area > 0.f);
+			(mAttachmentSurfaceArea > max_attachment_area && max_attachment_area > 0.f) ||
+			(mVisualComplexity > max_cost && max_render_cost > 0);
+	}
+
+	return ret;
 }
 
 //------------------------------------------------------------------------
@@ -4139,46 +4152,6 @@ bool LLVOAvatar::shouldAlphaMask()
 
 }
 
-U32 LLVOAvatar::renderSkinnedAttachments()
-{
-	/*U32 num_indices = 0;
-	
-	const U32 data_mask =	LLVertexBuffer::MAP_VERTEX | 
-							LLVertexBuffer::MAP_NORMAL | 
-							LLVertexBuffer::MAP_TEXCOORD0 |
-							LLVertexBuffer::MAP_COLOR |
-							LLVertexBuffer::MAP_WEIGHT4;
-
-	for (attachment_map_t::const_iterator iter = mAttachmentPoints.begin(); 
-		 iter != mAttachmentPoints.end();
-		 ++iter)
-	{
-		LLViewerJointAttachment* attachment = iter->second;
-		for (LLViewerJointAttachment::attachedobjs_vec_t::iterator attachment_iter = attachment->mAttachedObjects.begin();
-			 attachment_iter != attachment->mAttachedObjects.end();
-			 ++attachment_iter)
-		{
-			const LLViewerObject* attached_object = (*attachment_iter);
-			if (attached_object && !attached_object->isHUDAttachment())
-			{
-				const LLDrawable* drawable = attached_object->mDrawable;
-				if (drawable)
-				{
-					for (S32 i = 0; i < drawable->getNumFaces(); ++i)
-					{
-						LLFace* face = drawable->getFace(i);
-						if (face->isState(LLFace::RIGGED))
-						{
-							
-				}
-			}
-		}
-	}
-
-	return num_indices;*/
-	return 0;
-}
-
 //-----------------------------------------------------------------------------
 // renderSkinned()
 //-----------------------------------------------------------------------------
@@ -4336,21 +4309,23 @@ U32 LLVOAvatar::renderSkinned(EAvatarRenderPass pass)
 		BOOL first_pass = TRUE;
 		if (!LLDrawPoolAvatar::sSkipOpaque)
 		{
+			bool muted = isVisuallyMuted();
+
 			if (!isSelf() || gAgent.needsRenderHead() || LLPipeline::sShadowRender)
 			{
-				if (isTextureVisible(TEX_HEAD_BAKED) || mIsDummy)
+				if (isTextureVisible(TEX_HEAD_BAKED) || mIsDummy || muted)
 				{
 					num_indices += mMeshLOD[MESH_ID_HEAD]->render(mAdjustedPixelArea, TRUE, mIsDummy);
 					first_pass = FALSE;
 				}
 			}
-			if (isTextureVisible(TEX_UPPER_BAKED) || mIsDummy)
+			if (isTextureVisible(TEX_UPPER_BAKED) || mIsDummy || muted)
 			{
 				num_indices += mMeshLOD[MESH_ID_UPPER_BODY]->render(mAdjustedPixelArea, first_pass, mIsDummy);
 				first_pass = FALSE;
 			}
 			
-			if (isTextureVisible(TEX_LOWER_BAKED) || mIsDummy)
+			if (isTextureVisible(TEX_LOWER_BAKED) || mIsDummy || muted)
 			{
 				num_indices += mMeshLOD[MESH_ID_LOWER_BODY]->render(mAdjustedPixelArea, first_pass, mIsDummy);
 				first_pass = FALSE;
@@ -6090,6 +6065,8 @@ const LLViewerJointAttachment *LLVOAvatar::attachObject(LLViewerObject *viewer_o
 		return 0;
 	}
 
+	mVisualComplexityStale = TRUE;
+
 	if (viewer_object->isSelected())
 	{
 		LLSelectMgr::getInstance()->updateSelectionCenter();
@@ -6244,6 +6221,7 @@ BOOL LLVOAvatar::detachObject(LLViewerObject *viewer_object)
 		
 		if (attachment->isObjectAttached(viewer_object))
 		{
+			mVisualComplexityStale = TRUE;
 			cleanupAttachedMesh( viewer_object );
 			attachment->removeObject(viewer_object);
 			lldebugs << "Detaching object " << viewer_object->mID << " from " << attachment->getName() << llendl;
@@ -8456,7 +8434,7 @@ void LLVOAvatar::updateImpostors()
 
 BOOL LLVOAvatar::isImpostor() const
 {
-	return (isVisuallyMuted() || (sUseImpostors && mUpdatePeriod >= IMPOSTOR_PERIOD)) ? TRUE : FALSE;
+	return sUseImpostors && (isVisuallyMuted() || (mUpdatePeriod >= IMPOSTOR_PERIOD)) ? TRUE : FALSE;
 }
 
 
@@ -8501,6 +8479,8 @@ void LLVOAvatar::getImpostorValues(LLVector4a* extents, LLVector3& angle, F32& d
 
 void LLVOAvatar::idleUpdateRenderCost()
 {
+	static LLCachedControl<U32> max_render_cost(gSavedSettings, "RenderAutoMuteRenderCostLimit");
+
 	static const U32 ARC_BODY_PART_COST = 200;
 	static const U32 ARC_LIMIT = 20000;
 
@@ -8511,123 +8491,147 @@ void LLVOAvatar::idleUpdateRenderCost()
 		setDebugText(llformat("%.1f KB, %.2f m^2", mAttachmentGeometryBytes/1024.f, mAttachmentSurfaceArea));
 	}
 
-	if (!gPipeline.hasRenderDebugMask(LLPipeline::RENDER_DEBUG_SHAME))
+	if (!gPipeline.hasRenderDebugMask(LLPipeline::RENDER_DEBUG_SHAME) && max_render_cost == 0)
 	{
 		return;
 	}
 
-	U32 cost = 0;
-	LLVOVolume::texture_cost_t textures;
-
-	for (U8 baked_index = 0; baked_index < BAKED_NUM_INDICES; baked_index++)
+	if (mVisualComplexityStale)
 	{
-		const LLVOAvatarDictionary::BakedEntry *baked_dict = LLVOAvatarDictionary::getInstance()->getBakedTexture((EBakedTextureIndex)baked_index);
-		ETextureIndex tex_index = baked_dict->mTextureIndex;
-		if ((tex_index != TEX_SKIRT_BAKED) || (isWearingWearableType(LLWearableType::WT_SKIRT)))
+		mVisualComplexityStale = FALSE;
+		U32 cost = 0;
+		LLVOVolume::texture_cost_t textures;
+
+		for (U8 baked_index = 0; baked_index < BAKED_NUM_INDICES; baked_index++)
 		{
-			if (isTextureVisible(tex_index))
+			const LLVOAvatarDictionary::BakedEntry *baked_dict = LLVOAvatarDictionary::getInstance()->getBakedTexture((EBakedTextureIndex)baked_index);
+			ETextureIndex tex_index = baked_dict->mTextureIndex;
+			if ((tex_index != TEX_SKIRT_BAKED) || (isWearingWearableType(LLWearableType::WT_SKIRT)))
 			{
-				cost +=ARC_BODY_PART_COST;
+				if (isTextureVisible(tex_index))
+				{
+					cost +=ARC_BODY_PART_COST;
+				}
 			}
 		}
-	}
 
 
-	for (attachment_map_t::const_iterator iter = mAttachmentPoints.begin(); 
-		 iter != mAttachmentPoints.end();
-		 ++iter)
-	{
-		LLViewerJointAttachment* attachment = iter->second;
-		for (LLViewerJointAttachment::attachedobjs_vec_t::iterator attachment_iter = attachment->mAttachedObjects.begin();
-			 attachment_iter != attachment->mAttachedObjects.end();
-			 ++attachment_iter)
+		for (attachment_map_t::const_iterator iter = mAttachmentPoints.begin(); 
+			 iter != mAttachmentPoints.end();
+			 ++iter)
 		{
-			const LLViewerObject* attached_object = (*attachment_iter);
-			if (attached_object && !attached_object->isHUDAttachment())
+			LLViewerJointAttachment* attachment = iter->second;
+			for (LLViewerJointAttachment::attachedobjs_vec_t::iterator attachment_iter = attachment->mAttachedObjects.begin();
+				 attachment_iter != attachment->mAttachedObjects.end();
+				 ++attachment_iter)
 			{
-				textures.clear();
-				const LLDrawable* drawable = attached_object->mDrawable;
-				if (drawable)
+				const LLViewerObject* attached_object = (*attachment_iter);
+				if (attached_object && !attached_object->isHUDAttachment())
 				{
-					const LLVOVolume* volume = drawable->getVOVolume();
-					if (volume)
+					textures.clear();
+					const LLDrawable* drawable = attached_object->mDrawable;
+					if (drawable)
 					{
-						cost += volume->getRenderCost(textures);
-
-						const_child_list_t children = volume->getChildren();
-						for (const_child_list_t::const_iterator child_iter = children.begin();
-							  child_iter != children.end();
-							  ++child_iter)
+						const LLVOVolume* volume = drawable->getVOVolume();
+						if (volume)
 						{
-							LLViewerObject* child_obj = *child_iter;
-							LLVOVolume *child = dynamic_cast<LLVOVolume*>( child_obj );
-							if (child)
+							cost += volume->getRenderCost(textures);
+
+							const_child_list_t children = volume->getChildren();
+							for (const_child_list_t::const_iterator child_iter = children.begin();
+								  child_iter != children.end();
+								  ++child_iter)
 							{
-								cost += child->getRenderCost(textures);
+								LLViewerObject* child_obj = *child_iter;
+								LLVOVolume *child = dynamic_cast<LLVOVolume*>( child_obj );
+								if (child)
+								{
+									cost += child->getRenderCost(textures);
+								}
 							}
-						}
 
-						for (LLVOVolume::texture_cost_t::iterator iter = textures.begin(); iter != textures.end(); ++iter)
-						{
-							// add the cost of each individual texture in the linkset
-							cost += iter->second;
+							for (LLVOVolume::texture_cost_t::iterator iter = textures.begin(); iter != textures.end(); ++iter)
+							{
+								// add the cost of each individual texture in the linkset
+								cost += iter->second;
+							}
 						}
 					}
 				}
 			}
-		}
 
-	}
+		}
 
 
 
-	// Diagnostic output to identify all avatar-related textures.
-	// Does not affect rendering cost calculation.
-	// Could be wrapped in a debug option if output becomes problematic.
-	if (isSelf())
-	{
-		// print any attachment textures we didn't already know about.
-		for (LLVOVolume::texture_cost_t::iterator it = textures.begin(); it != textures.end(); ++it)
+		// Diagnostic output to identify all avatar-related textures.
+		// Does not affect rendering cost calculation.
+		// Could be wrapped in a debug option if output becomes problematic.
+		if (isSelf())
 		{
-			LLUUID image_id = it->first;
-			if( image_id.isNull() || image_id == IMG_DEFAULT || image_id == IMG_DEFAULT_AVATAR)
-				continue;
-			if (all_textures.find(image_id) == all_textures.end())
+			// print any attachment textures we didn't already know about.
+			for (LLVOVolume::texture_cost_t::iterator it = textures.begin(); it != textures.end(); ++it)
+			{
+				LLUUID image_id = it->first;
+				if( image_id.isNull() || image_id == IMG_DEFAULT || image_id == IMG_DEFAULT_AVATAR)
+					continue;
+				if (all_textures.find(image_id) == all_textures.end())
+				{
+					// attachment texture not previously seen.
+					llinfos << "attachment_texture: " << image_id.asString() << llendl;
+					all_textures.insert(image_id);
+				}
+			}
+
+			// print any avatar textures we didn't already know about
+			for (LLVOAvatarDictionary::Textures::const_iterator iter = LLVOAvatarDictionary::getInstance()->getTextures().begin();
+				 iter != LLVOAvatarDictionary::getInstance()->getTextures().end();
+				 ++iter)
 			{
-				// attachment texture not previously seen.
-				llinfos << "attachment_texture: " << image_id.asString() << llendl;
-				all_textures.insert(image_id);
+				const LLVOAvatarDictionary::TextureEntry *texture_dict = iter->second;
+				// TODO: MULTI-WEARABLE: handle multiple textures for self
+				const LLViewerTexture* te_image = getImage(iter->first,0);
+				if (!te_image)
+					continue;
+				LLUUID image_id = te_image->getID();
+				if( image_id.isNull() || image_id == IMG_DEFAULT || image_id == IMG_DEFAULT_AVATAR)
+					continue;
+				if (all_textures.find(image_id) == all_textures.end())
+				{
+					llinfos << "local_texture: " << texture_dict->mName << ": " << image_id << llendl;
+					all_textures.insert(image_id);
+				}
 			}
 		}
 
-		// print any avatar textures we didn't already know about
-		for (LLVOAvatarDictionary::Textures::const_iterator iter = LLVOAvatarDictionary::getInstance()->getTextures().begin();
-			 iter != LLVOAvatarDictionary::getInstance()->getTextures().end();
-			 ++iter)
-		{
-			const LLVOAvatarDictionary::TextureEntry *texture_dict = iter->second;
-			// TODO: MULTI-WEARABLE: handle multiple textures for self
-			const LLViewerTexture* te_image = getImage(iter->first,0);
-			if (!te_image)
-				continue;
-			LLUUID image_id = te_image->getID();
-			if( image_id.isNull() || image_id == IMG_DEFAULT || image_id == IMG_DEFAULT_AVATAR)
-				continue;
-			if (all_textures.find(image_id) == all_textures.end())
+		if (isSelf() && max_render_cost > 0 && mVisualComplexity != cost)
+		{ //pop up notification that you have exceeded a render cost limit
+			if (cost > max_render_cost+max_render_cost/2)
+			{
+				LLNotificationsUtil::add("ExceededHighDetailRenderCost");
+			}
+			else if (cost > max_render_cost)
 			{
-				llinfos << "local_texture: " << texture_dict->mName << ": " << image_id << llendl;
-				all_textures.insert(image_id);
+				LLNotificationsUtil::add("ExceededMidDetailRenderCost");
+			}
+			else if (cost > max_render_cost/2)
+			{
+				LLNotificationsUtil::add("ExceededLowDetailRenderCost");
 			}
 		}
+
+		mVisualComplexity = cost;
 	}
 
 	
-	std::string viz_string = LLVOAvatar::rezStatusToString(getRezzedStatus());
-	setDebugText(llformat("%s %d", viz_string.c_str(), cost));
-	mVisualComplexity = cost;
-	F32 green = 1.f-llclamp(((F32) cost-(F32)ARC_LIMIT)/(F32)ARC_LIMIT, 0.f, 1.f);
-	F32 red = llmin((F32) cost/(F32)ARC_LIMIT, 1.f);
-	mText->setColor(LLColor4(red,green,0,1));
+	if (gPipeline.hasRenderDebugMask(LLPipeline::RENDER_DEBUG_SHAME))
+	{
+		std::string viz_string = LLVOAvatar::rezStatusToString(getRezzedStatus());
+		setDebugText(llformat("%s %d", viz_string.c_str(), mVisualComplexity));
+		F32 green = 1.f-llclamp(((F32) mVisualComplexity-(F32)ARC_LIMIT)/(F32)ARC_LIMIT, 0.f, 1.f);
+		F32 red = llmin((F32) mVisualComplexity/(F32)ARC_LIMIT, 1.f);
+		mText->setColor(LLColor4(red,green,0,1));
+	}
 }
 
 // static
diff --git a/indra/newview/llvoavatar.h b/indra/newview/llvoavatar.h
index 1adb680962..e6569c557c 100644
--- a/indra/newview/llvoavatar.h
+++ b/indra/newview/llvoavatar.h
@@ -252,6 +252,7 @@ public:
 	static void		invalidateNameTags();
 	void			addNameTagLine(const std::string& line, const LLColor4& color, S32 style, const LLFontGL* font);
 	void 			idleUpdateRenderCost();
+	void			updateVisualComplexity() { mVisualComplexityStale = TRUE; }
 	void 			idleUpdateBelowWater();
 
 	//--------------------------------------------------------------------
@@ -314,6 +315,7 @@ private:
 	BOOL			mFullyLoadedInitialized;
 	S32				mFullyLoadedFrameCounter;
 	S32				mVisualComplexity;
+	BOOL			mVisualComplexityStale;
 	LLFrameTimer	mFullyLoadedTimer;
 	LLFrameTimer	mRuthTimer;
 
@@ -437,7 +439,6 @@ public:
 	U32 		renderRigid();
 	U32 		renderSkinned(EAvatarRenderPass pass);
 	F32			getLastSkinTime() { return mLastSkinTime; }
-	U32			renderSkinnedAttachments();
 	U32 		renderTransparent(BOOL first_pass);
 	void 		renderCollisionVolumes();
 	static void	deleteCachedImages(bool clearAll=true);
diff --git a/indra/newview/llvovolume.cpp b/indra/newview/llvovolume.cpp
index c0f80cf855..6a18534484 100644
--- a/indra/newview/llvovolume.cpp
+++ b/indra/newview/llvovolume.cpp
@@ -99,6 +99,8 @@ static LLFastTimer::DeclareTimer FTM_GEN_TRIANGLES("Generate Triangles");
 static LLFastTimer::DeclareTimer FTM_GEN_VOLUME("Generate Volumes");
 static LLFastTimer::DeclareTimer FTM_VOLUME_TEXTURES("Volume Textures");
 
+extern BOOL gGLDebugLoggingEnabled;
+
 // Implementation class of LLMediaDataClientObject.  See llmediadataclient.h
 class LLMediaDataClientObjectImpl : public LLMediaDataClientObject
 {
@@ -1067,7 +1069,9 @@ BOOL LLVOVolume::setVolume(const LLVolumeParams &params_in, const S32 detail, bo
 					break;
 				}
 				volume->genBinormals(i);
+				//gGLDebugLoggingEnabled = TRUE;
 				LLFace::cacheFaceInVRAM(face);
+				//gGLDebugLoggingEnabled = FALSE;
 			}
 		}
 		
@@ -1116,6 +1120,12 @@ void LLVOVolume::notifyMeshLoaded()
 { 
 	mSculptChanged = TRUE;
 	gPipeline.markRebuild(mDrawable, LLDrawable::REBUILD_GEOMETRY, TRUE);
+
+	LLVOAvatar* avatar = getAvatar();
+	if (avatar)
+	{
+		avatar->updateVisualComplexity();
+	}
 }
 
 // sculpt replaces generate() for sculpted surfaces
@@ -4830,6 +4840,16 @@ void LLVolumeGeometryManager::genDrawInfo(LLSpatialGroup* group, U32 mask, std::
 
 	U32 buffer_usage = group->mBufferUsage;
 	
+	static LLCachedControl<bool> use_transform_feedback(gSavedSettings, "RenderUseTransformFeedback");
+
+	if (use_transform_feedback &&
+		gTransformPositionProgram.mProgramObject && //transform shaders are loaded
+		buffer_usage == GL_DYNAMIC_DRAW_ARB && //target buffer is in VRAM
+		!(mask & LLVertexBuffer::MAP_WEIGHT4)) //TODO: add support for weights
+	{
+		buffer_usage = GL_DYNAMIC_COPY_ARB;
+	}
+
 #if LL_DARWIN
 	// HACK from Leslie:
 	// Disable VBO usage for alpha on Mac OS X because it kills the framerate
@@ -4889,6 +4909,8 @@ void LLVolumeGeometryManager::genDrawInfo(LLSpatialGroup* group, U32 mask, std::
 	//NEVER use more than 16 texture index channels (workaround for prevalent driver bug)
 	texture_index_channels = llmin(texture_index_channels, 16);
 
+	bool flexi = false;
+
 	while (face_iter != faces.end())
 	{
 		//pull off next face
@@ -4915,6 +4937,8 @@ void LLVolumeGeometryManager::genDrawInfo(LLSpatialGroup* group, U32 mask, std::
 		U32 index_count = facep->getIndicesCount();
 		U32 geom_count = facep->getGeomCount();
 
+		flexi = flexi || facep->getViewerObject()->getVolume()->isUnique();
+
 		//sum up vertices needed for this render batch
 		std::vector<LLFace*>::iterator i = face_iter;
 		++i;
@@ -4983,6 +5007,9 @@ void LLVolumeGeometryManager::genDrawInfo(LLSpatialGroup* group, U32 mask, std::
 						}
 
 						++i;
+
+						flexi = flexi || facep->getViewerObject()->getVolume()->isUnique();
+
 						index_count += facep->getIndicesCount();
 						geom_count += facep->getGeomCount();
 
@@ -5012,10 +5039,18 @@ void LLVolumeGeometryManager::genDrawInfo(LLSpatialGroup* group, U32 mask, std::
 					++i;
 					index_count += facep->getIndicesCount();
 					geom_count += facep->getGeomCount();
+
+					flexi = flexi || facep->getViewerObject()->getVolume()->isUnique();
 				}
 			}
 		}
 
+
+		if (flexi && buffer_usage && buffer_usage != GL_STREAM_DRAW_ARB)
+		{
+			buffer_usage = GL_STREAM_DRAW_ARB;
+		}
+
 		//create vertex buffer
 		LLVertexBuffer* buffer = NULL;
 
diff --git a/indra/newview/pipeline.cpp b/indra/newview/pipeline.cpp
index 92c5ac8583..690bf64798 100644
--- a/indra/newview/pipeline.cpp
+++ b/indra/newview/pipeline.cpp
@@ -253,15 +253,15 @@ LLFastTimer::DeclareTimer FTM_RENDER_DEFERRED("Deferred Shading");
 static LLFastTimer::DeclareTimer FTM_STATESORT_DRAWABLE("Sort Drawables");
 static LLFastTimer::DeclareTimer FTM_STATESORT_POSTSORT("Post Sort");
 
-static LLStaticHashedString sTint("tint");

-static LLStaticHashedString sAmbiance("ambiance");

-static LLStaticHashedString sAlphaScale("alpha_scale");

-static LLStaticHashedString sNormMat("norm_mat");

-static LLStaticHashedString sOffset("offset");

-static LLStaticHashedString sScreenRes("screenRes");

-static LLStaticHashedString sDelta("delta");

-static LLStaticHashedString sDistFactor("dist_factor");

-static LLStaticHashedString sKern("kern");

+static LLStaticHashedString sTint("tint");
+static LLStaticHashedString sAmbiance("ambiance");
+static LLStaticHashedString sAlphaScale("alpha_scale");
+static LLStaticHashedString sNormMat("norm_mat");
+static LLStaticHashedString sOffset("offset");
+static LLStaticHashedString sScreenRes("screenRes");
+static LLStaticHashedString sDelta("delta");
+static LLStaticHashedString sDistFactor("dist_factor");
+static LLStaticHashedString sKern("kern");
 static LLStaticHashedString sKernScale("kern_scale");
 
 //----------------------------------------
@@ -10258,6 +10258,13 @@ void LLPipeline::generateImpostor(LLVOAvatar* avatar)
 		avatar->mImpostor.bindTarget();
 	}
 
+	F32 old_alpha = LLDrawPoolAvatar::sMinimumAlpha;
+
+	if (muted)
+	{ //disable alpha masking for muted avatars (get whole skin silhouette)
+		LLDrawPoolAvatar::sMinimumAlpha = 0.f;
+	}
+
 	if (LLPipeline::sRenderDeferred)
 	{
 		avatar->mImpostor.clear();
@@ -10272,6 +10279,8 @@ void LLPipeline::generateImpostor(LLVOAvatar* avatar)
 		renderGeom(camera);
 	}
 	
+	LLDrawPoolAvatar::sMinimumAlpha = old_alpha;
+		
 	{ //create alpha mask based on depth buffer (grey out if muted)
 		LLFastTimer t(FTM_IMPOSTOR_BACKGROUND);
 		if (LLPipeline::sRenderDeferred)
@@ -10285,6 +10294,7 @@ void LLPipeline::generateImpostor(LLVOAvatar* avatar)
 		if (muted)
 		{
 			gGL.setColorMask(true, true);
+
 		}
 		else
 		{
@@ -10303,14 +10313,24 @@ void LLPipeline::generateImpostor(LLVOAvatar* avatar)
 		gGL.pushMatrix();
 		gGL.loadIdentity();
 
-		static const F32 clip_plane = 0.99999f;
+		static const F32 clip_plane = 0.999f;
 
 		if (LLGLSLShader::sNoFixedFunction)
 		{
-			gUIProgram.bind();
+			gDebugProgram.bind();
 		}
 
-		gGL.color4ub(64,64,64,255);
+
+		if (LLMuteList::getInstance()->isMuted(avatar->getID()))
+		{ //grey muted avatar
+			gGL.diffuseColor4ub(64,64,64,255);
+		}
+		else
+		{ //blue visually muted avatar
+			gGL.diffuseColor4ub(72,61,139,255);
+		}
+
+		{
 		gGL.begin(LLRender::QUADS);
 		gGL.vertex3f(-1, -1, clip_plane);
 		gGL.vertex3f(1, -1, clip_plane);
@@ -10318,10 +10338,11 @@ void LLPipeline::generateImpostor(LLVOAvatar* avatar)
 		gGL.vertex3f(-1, 1, clip_plane);
 		gGL.end();
 		gGL.flush();
+		}
 
 		if (LLGLSLShader::sNoFixedFunction)
 		{
-			gUIProgram.unbind();
+			gDebugProgram.unbind();
 		}
 
 		gGL.popMatrix();
diff --git a/indra/newview/skins/default/xui/en/notifications.xml b/indra/newview/skins/default/xui/en/notifications.xml
index 832e05a06f..fb530ef22d 100644
--- a/indra/newview/skins/default/xui/en/notifications.xml
+++ b/indra/newview/skins/default/xui/en/notifications.xml
@@ -203,6 +203,45 @@ Message Template [PATH] not found.
   </notification>
 
   <notification
+   icon="notify.tga"
+   name="ExceededHighDetailRenderCost"
+   persist="false"
+   type="alertmodal">
+    Your avatar has become too complex to be rendered by even high performance computers.  Almost all Residents will see a low detail stand in instead of your actual avatar.
+    <unique/>
+    <usetemplate
+     ignoretext="Avatar exceeded high detail complexity."
+     name="okignore"
+     yestext="Close"/>
+  </notification>
+
+  <notification
+   icon="notify.tga"
+   name="ExceededMidDetailRenderCost"
+   persist="false"
+   type="alertmodal">
+    Your avatar has become too complex to be rendered by most computers.  Many Residents will see a low detail stand in instead of your actual avatar.
+  <unique/>
+  <usetemplate
+   ignoretext="Avatar exceeded mid detail complexity."
+   name="okignore"
+   yestext="Close"/>
+</notification>
+
+  <notification
+ icon="notify.tga"
+ name="ExceededLowDetailRenderCost"
+ persist="false"
+ type="alertmodal">
+    Your avatar has become too complex to be rendered by some computers.  Some Residents will see a low detail stand in instead of your actual avatar.
+  <unique/>
+  <usetemplate
+   ignoretext="Avatar exceeded low detail complexity."
+   name="okignore"
+   yestext="Close"/>
+  </notification>
+
+  <notification
    icon="alertmodal.tga"
    name="WearableSave"
    type="alertmodal">
@@ -9935,5 +9974,5 @@ An internal error prevented us from properly updating your viewer.  The L$ balan
    <tag>fail</tag>
 Cannot create large prims that intersect other players.  Please re-try when other players have moved.
   </notification>
-
+  
 </notifications>