Implement support for mixed sampled render targets

src/gpu/GrPipelineBuilder.cpp

Index: src/gpu/GrPipelineBuilder.cpp
diff --git a/src/gpu/GrPipelineBuilder.cpp b/src/gpu/GrPipelineBuilder.cpp
index 1d8aa4f2b4f9baa9b21496272dfac6b7f04c85f7..f1d842412a8f5305ede68bb691e0157faf1eaec3 100644
--- a/src/gpu/GrPipelineBuilder.cpp
+++ b/src/gpu/GrPipelineBuilder.cpp
@@ -48,7 +48,8 @@ GrPipelineBuilder& GrPipelineBuilder::operator=(const GrPipelineBuilder& that) {
     return *this;
 }
 
-void GrPipelineBuilder::setFromPaint(const GrPaint& paint, GrRenderTarget* rt, const GrClip& clip) {
+void GrPipelineBuilder::setFromPaint(const GrPaint& paint, GrRenderTarget* rt, const GrClip& clip,
+                                     GrRenderTarget::PipelineStage pipelineStage) {
     SkASSERT(0 == fBlockEffectRemovalCnt || 0 == this->numFragmentStages());
 
     fColorStages.reset();
@@ -75,7 +76,7 @@ void GrPipelineBuilder::setFromPaint(const GrPaint& paint, GrRenderTarget* rt, c
 
     this->setState(GrPipelineBuilder::kDither_StateBit, paint.isDither());
     this->setState(GrPipelineBuilder::kHWAntialias_StateBit,
-                   rt->isMultisampled() && paint.isAntiAlias());
+                   rt->isMultisampled(pipelineStage) && paint.isAntiAlias());
 
     fColorProcInfoValid = false;
     fCoverageProcInfoValid = false;