Use scratch keys for stencil buffers.

src/gpu/GrStencilBuffer.h

 
 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 
 #ifndef GrStencilBuffer_DEFINED
@@ skipping 29 matching lines @@
 
     // called to determine if we have to render the clip into SB.
     bool mustRenderClip(int32_t clipStackGenID,
                         const SkIRect& clipSpaceRect,
                         const SkIPoint clipSpaceToStencilOffset) const {
         return fLastClipStackGenID != clipStackGenID ||
                fLastClipSpaceOffset != clipSpaceToStencilOffset ||
                !fLastClipStackRect.contains(clipSpaceRect);
     }
 
-    // Places the sb in the cache. The cache takes a ref of the stencil buffer.
-    void transferToCache();
-
     static GrResourceKey ComputeKey(int width, int height, int sampleCnt);
 
 protected:
     GrStencilBuffer(GrGpu* gpu, bool isWrapped, int width, int height, int bits, int sampleCnt)
         : GrGpuResource(gpu, isWrapped)
         , fWidth(width)
         , fHeight(height)
         , fBits(bits)
         , fSampleCnt(sampleCnt)
         , fLastClipStackGenID(SkClipStack::kInvalidGenID) {
+        this->setScratchKey(ComputeKey(width, height, sampleCnt));
         fLastClipStackRect.setEmpty();
     }
 
 private:
 
     int fWidth;
     int fHeight;
     int fBits;
     int fSampleCnt;
 
     int32_t     fLastClipStackGenID;
     SkIRect     fLastClipStackRect;
     SkIPoint    fLastClipSpaceOffset;
 
     typedef GrGpuResource INHERITED;
 };
 
 #endif