Implement support for mixed sampled render targets

src/gpu/GrStencilAndCoverTextContext.cpp

Index: src/gpu/GrStencilAndCoverTextContext.cpp
diff --git a/src/gpu/GrStencilAndCoverTextContext.cpp b/src/gpu/GrStencilAndCoverTextContext.cpp
index 4d34cf47bab9046116a792d6afc5ec5c50c55257..bf4cba4903deed91961b009623ac9b06d050e8b3 100644
--- a/src/gpu/GrStencilAndCoverTextContext.cpp
+++ b/src/gpu/GrStencilAndCoverTextContext.cpp
@@ -373,6 +373,8 @@ void GrStencilAndCoverTextContext::init(GrRenderTarget* rt,
     fStateRestore.set(&fPipelineBuilder);
 
     fPipelineBuilder.setFromPaint(fPaint, fRenderTarget, fClip);
+    SkASSERT(fRenderTarget->isStencilBufferMultisampled());

[Chris Dalton, 2015/06/09 17:39:51]

This is really minor, but it might be more puristic to assert something like
this:

  SkASSERT(fRenderTarget->isStencilBufferMultisampled() ||
!fPaint.isAntiAlias());

+    fPipelineBuilder.setState(GrPipelineBuilder::kHWAntialias_Flag, fPaint.isAntiAlias());
 
     GR_STATIC_CONST_SAME_STENCIL(kStencilPass,
                                  kZero_StencilOp,