Enable stencil clipping in mixed sampled render targets

include/gpu/GrRenderTarget.h

Index: include/gpu/GrRenderTarget.h
diff --git a/include/gpu/GrRenderTarget.h b/include/gpu/GrRenderTarget.h
index 2309dbd876f6cf4e9d58b715730088045e83fb65..5557e936e2f457483eabf1957b5cf745cc8e1d4c 100644
--- a/include/gpu/GrRenderTarget.h
+++ b/include/gpu/GrRenderTarget.h
@@ -175,6 +175,9 @@ private:
 
     GrStencilAttachment*  fStencilAttachment;
     SampleConfig          fSampleConfig;
+    // True if sample locations colocated at pixel center are currently in use, false if default
+    // sample locations are currently in use.

[bsalomon, 2015/09/29 17:41:57]

I'm wondering whether this should be in the GL subclass rather than the base
class. One reason is that the setting/reading of this is only valid during
playback to the GrGpu object. The GL subclasses of resources aren't known to
most all the classes that are used before the draw target is flushed to the GPU

[vbuzinov, 2015/09/30 06:08:29]

I agree, I think this property belongs to the GL subclass (that is where I had
it originally). Thanks!

+    bool                  fUsesColocatedSampleLocations;
 
     SkIRect               fResolveRect;