Fix mixed samples stencil clip

src/gpu/GrPipeline.h

 /*
  * Copyright 2015 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef GrPipeline_DEFINED
 #define GrPipeline_DEFINED
 
@@ skipping 15 matching lines @@
 
 /**
  * Class that holds an optimized version of a GrPipelineBuilder. It is meant to be an immutable
  * class, and contains all data needed to set the state for a gpu draw.
  */
 class GrPipeline : public GrNonAtomicRef {
 public:
     ///////////////////////////////////////////////////////////////////////////
     /// @name Creation
 
+    enum Flags {
+        kHWAA_Flag            = 0x1,
+        kSnapVertices_Flag    = 0x2,
+        kCoCenterSamples_Flag = 0x4
+    };
+
     struct CreateArgs {

[bsalomon, 2015/11/09 19:26:46]

Perhaps CreateArgs should take an GrAppliedClip rather than exposing these
flags?

[Chris Dalton, 2015/11/09 19:49:36]

Ok, that's a good idea. And GrAppliedClip doesn't need to know these flags, but
rather can have a very specific bool to do exactly what it wants -- enable hwaa
but with co-centered sample locations.

         const GrPipelineBuilder*    fPipelineBuilder;
         const GrCaps*               fCaps;
         GrProcOptInfo               fColorPOI;
         GrProcOptInfo               fCoveragePOI;
         const GrScissorState*       fScissor;
         GrXferProcessor::DstTexture fDstTexture;
+        uint32_t                    fAdditionalFlags;
+        uint32_t                    fBlockedFlags;
     };
 
     /** Creates a pipeline into a pre-allocated buffer */
     static GrPipeline* CreateAt(void* memory, const CreateArgs&, GrPipelineOptimizations*);
 
     /// @}
 
     ///////////////////////////////////////////////////////////////////////////
     /// @name Comparisons
 
@@ skipping 65 matching lines @@
      * @return    The currently set render target.
      */
     GrRenderTarget* getRenderTarget() const { return fRenderTarget.get(); }
 
     const GrStencilSettings& getStencil() const { return fStencilSettings; }
 
     const GrScissorState& getScissorState() const { return fScissorState; }
 
     bool isHWAntialiasState() const { return SkToBool(fFlags & kHWAA_Flag); }
     bool snapVerticesToPixelCenters() const { return SkToBool(fFlags & kSnapVertices_Flag); }
+    bool hasCoCenteredSamples() const { return SkToBool(fFlags & kCoCenterSamples_Flag); }
 
     GrXferBarrierType xferBarrierType(const GrCaps& caps) const {
         return fXferProcessor->xferBarrierType(fRenderTarget.get(), caps);
     }
 
     /**
      * Gets whether the target is drawing clockwise, counterclockwise,
      * or both faces.
      * @return the current draw face(s).
      */
@@ skipping 18 matching lines @@
                                         int* firstCoverageProcessorIdx);
 
     /**
      * Calculates the primary and secondary output types of the shader. For certain output types
      * the function may adjust the blend coefficients. After this function is called the src and dst
      * blend coeffs will represent those used by backend API.
      */
     void setOutputStateInfo(const GrPipelineBuilder& ds, GrXferProcessor::OptFlags,
                             const GrCaps&);
 
-    enum Flags {
-        kHWAA_Flag              = 0x1,
-        kSnapVertices_Flag      = 0x2,
-    };
-
     typedef GrPendingIOResource<GrRenderTarget, kWrite_GrIOType> RenderTarget;
     typedef GrPendingProgramElement<const GrFragmentProcessor> PendingFragmentProcessor;
     typedef SkAutoSTArray<8, PendingFragmentProcessor> FragmentProcessorArray;
     typedef GrPendingProgramElement<const GrXferProcessor> ProgramXferProcessor;
     RenderTarget                        fRenderTarget;
     GrScissorState                      fScissorState;
     GrStencilSettings                   fStencilSettings;
     GrPipelineBuilder::DrawFace         fDrawFace;
     uint32_t                            fFlags;
     ProgramXferProcessor                fXferProcessor;
     FragmentProcessorArray              fFragmentProcessors;
     bool                                fReadsFragPosition;
 
     // This value is also the index in fFragmentProcessors where coverage processors begin.
     int                                 fNumColorProcessors;
 
     typedef SkRefCnt INHERITED;
 };
 
 #endif