1 files changed, 22 insertions, 16 deletions

diff --git a/indra/newview/lldrawpoolalpha.cpp b/indra/newview/lldrawpoolalpha.cpp
index 313b310e1e..6fa16825df 100644
--- a/indra/newview/lldrawpoolalpha.cpp
+++ b/indra/newview/lldrawpoolalpha.cpp
@@ -394,10 +394,15 @@ void LLDrawPoolAlpha::renderAlpha(U32 mask)
 		if (group->mSpatialPartition->mRenderByGroup &&
 		    !group->isDead())
 		{
-			bool draw_glow_for_this_partition = mVertexShaderLevel > 0 && // no shaders = no glow.
-				// All particle systems seem to come off the wire with texture entries which claim that they glow.  This is probably a bug in the data.  Suppress.
-				group->mSpatialPartition->mPartitionType != LLViewerRegion::PARTITION_PARTICLE &&
-				group->mSpatialPartition->mPartitionType != LLViewerRegion::PARTITION_HUD_PARTICLE;
+			static LLFastTimer::DeclareTimer FTM_RENDER_ALPHA_GROUP_LOOP("Alpha Group");
+			LLFastTimer t(FTM_RENDER_ALPHA_GROUP_LOOP);
+
+			bool draw_glow_for_this_partition = mVertexShaderLevel > 0; // no shaders = no glow.
+
+			bool disable_cull = group->mSpatialPartition->mPartitionType == LLViewerRegion::PARTITION_PARTICLE ||
+				group->mSpatialPartition->mPartitionType == LLViewerRegion::PARTITION_HUD_PARTICLE;
+
+			LLGLDisable cull(disable_cull ? GL_CULL_FACE : 0);
 
 			LLSpatialGroup::drawmap_elem_t& draw_info = group->mDrawMap[LLRenderPass::PASS_ALPHA];
 
@@ -498,32 +503,31 @@ void LLDrawPoolAlpha::renderAlpha(U32 mask)
 					}
 				}
 
-				params.mVertexBuffer->setBuffer(mask);
-				params.mVertexBuffer->drawRange(params.mDrawMode, params.mStart, params.mEnd, params.mCount, params.mOffset);
-				gPipeline.addTrianglesDrawn(params.mCount, params.mDrawMode);
+				static LLFastTimer::DeclareTimer FTM_RENDER_ALPHA_PUSH("Alpha Push Verts");
+				{
+					LLFastTimer t(FTM_RENDER_ALPHA_PUSH);
+					gGL.blendFunc((LLRender::eBlendFactor) params.mBlendFuncSrc, (LLRender::eBlendFactor) params.mBlendFuncDst, mAlphaSFactor, mAlphaDFactor);
+					params.mVertexBuffer->setBuffer(mask);
+					params.mVertexBuffer->drawRange(params.mDrawMode, params.mStart, params.mEnd, params.mCount, params.mOffset);
+					gPipeline.addTrianglesDrawn(params.mCount, params.mDrawMode);
+				}
 				
 				// If this alpha mesh has glow, then draw it a second time to add the destination-alpha (=glow).  Interleaving these state-changing calls could be expensive, but glow must be drawn Z-sorted with alpha.
 				if (current_shader && 
 					draw_glow_for_this_partition &&
 					params.mVertexBuffer->hasDataType(LLVertexBuffer::TYPE_EMISSIVE))
 				{
+					static LLFastTimer::DeclareTimer FTM_RENDER_ALPHA_GLOW("Alpha Glow");
+					LLFastTimer t(FTM_RENDER_ALPHA_GLOW);
 					// install glow-accumulating blend mode
 					gGL.blendFunc(LLRender::BF_ZERO, LLRender::BF_ONE, // don't touch color
 						      LLRender::BF_ONE, LLRender::BF_ONE); // add to alpha (glow)
 
-					emissive_shader->bind();
-					
-					// glow doesn't use vertex colors from the mesh data
-					params.mVertexBuffer->setBuffer((mask & ~LLVertexBuffer::MAP_COLOR) | LLVertexBuffer::MAP_EMISSIVE);
+					params.mVertexBuffer->setBuffer(mask | LLVertexBuffer::MAP_EMISSIVE);
 					
 					// do the actual drawing, again
 					params.mVertexBuffer->drawRange(params.mDrawMode, params.mStart, params.mEnd, params.mCount, params.mOffset);
 					gPipeline.addTrianglesDrawn(params.mCount, params.mDrawMode);
-
-					// restore our alpha blend mode
-					gGL.blendFunc(mColorSFactor, mColorDFactor, mAlphaSFactor, mAlphaDFactor);
-
-					current_shader->bind();
 				}
 			
 				if (tex_setup)
@@ -536,6 +540,8 @@ void LLDrawPoolAlpha::renderAlpha(U32 mask)
 		}
 	}
 
+	gGL.setSceneBlendType(LLRender::BT_ALPHA);
+
 	LLVertexBuffer::unbind();	
 		
 	if (!light_enabled)