New API for computing optimization invariants.

src/gpu/batches/GrDrawPathBatch.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 GrDrawPathBatch_DEFINED
 #define GrDrawPathBatch_DEFINED
 
 #include "GrBatchFlushState.h"
 #include "GrDrawBatch.h"
 #include "GrGpu.h"
 #include "GrPath.h"
 #include "GrPathRendering.h"
 #include "GrPathProcessor.h"
 
 #include "SkTLList.h"
 
 class GrDrawPathBatchBase : public GrDrawBatch {
 public:
-    void getInvariantOutputColor(GrInitInvariantOutput* out) const override {
-        out->setKnownFourComponents(fColor);
-    }
-
-    void getInvariantOutputCoverage(GrInitInvariantOutput* out) const override {
-        out->setKnownSingleComponent(0xff);
+    void computeBatchToXPOverrides(GrInitInvariantOutput* color, GrInitInvariantOutput* coverage,
+                                   bool* usePLSDstRead) const {
+        color->setKnownFourComponents(fColor);
+        coverage->setKnownSingleComponent(0xff);
+        *usePLSDstRead = false;
     }
 
     void setStencilSettings(const GrStencilSettings& stencil) { fStencilSettings = stencil; }
 
 protected:
     GrDrawPathBatchBase(uint32_t classID, const SkMatrix& viewMatrix, GrColor initialColor)
         : INHERITED(classID)
         , fViewMatrix(viewMatrix)
         , fColor(initialColor) {}
 
@@ skipping 136 matching lines @@
     typedef SkTLList<GrPathRangeDraw*, 4> DrawList;
     PendingPathRange    fPathRange;
     DrawList            fDraws;
     int                 fTotalPathCount;
     SkMatrix            fLocalMatrix;
 
     typedef GrDrawPathBatchBase INHERITED;
 };
 
 #endif