Line data    Source code

       1             : /*
       2             :  * Copyright 2011 Google Inc.
       3             :  *
       4             :  * Use of this source code is governed by a BSD-style license that can be
       5             :  * found in the LICENSE file.
       6             :  */
       7             : 
       8             : 
       9             : #ifndef GrStencilAttachment_DEFINED
      10             : #define GrStencilAttachment_DEFINED
      11             : 
      12             : #include "GrGpuResource.h"
      13             : #include "SkClipStack.h"
      14             : 
      15             : class GrRenderTarget;
      16             : class GrResourceKey;
      17             : 
      18             : class GrStencilAttachment : public GrGpuResource {
      19             : public:
      20             : 
      21             : 
      22           0 :     virtual ~GrStencilAttachment() {
      23             :         // TODO: allow SB to be purged and detach itself from rts
      24           0 :     }
      25             : 
      26           0 :     int width() const { return fWidth; }
      27           0 :     int height() const { return fHeight; }
      28           0 :     int bits() const { return fBits; }
      29           0 :     int numSamples() const { return fSampleCnt; }
      30             : 
      31             :     // We create a unique stencil buffer at each width, height and sampleCnt and share it for
      32             :     // all render targets that require a stencil with those params.
      33             :     static void ComputeSharedStencilAttachmentKey(int width, int height, int sampleCnt,
      34             :                                                   GrUniqueKey* key);
      35             : 
      36             : protected:
      37           0 :     GrStencilAttachment(GrGpu* gpu, int width, int height, int bits, int sampleCnt)
      38           0 :         : GrGpuResource(gpu)
      39             :         , fWidth(width)
      40             :         , fHeight(height)
      41             :         , fBits(bits)
      42           0 :         , fSampleCnt(sampleCnt) {
      43           0 :     }
      44             : 
      45             : private:
      46             : 
      47             :     int fWidth;
      48             :     int fHeight;
      49             :     int fBits;
      50             :     int fSampleCnt;
      51             : 
      52             :     typedef GrGpuResource INHERITED;
      53             : };
      54             : 
      55             : #endif