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 ~GrStencilAttachment()22 virtual ~GrStencilAttachment() { 23 // TODO: allow SB to be purged and detach itself from rts 24 } 25 width()26 int width() const { return fWidth; } height()27 int height() const { return fHeight; } bits()28 int bits() const { return fBits; } numSamples()29 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: GrStencilAttachment(GrGpu * gpu,int width,int height,int bits,int sampleCnt)37 GrStencilAttachment(GrGpu* gpu, int width, int height, int bits, int sampleCnt) 38 : GrGpuResource(gpu) 39 , fWidth(width) 40 , fHeight(height) 41 , fBits(bits) 42 , fSampleCnt(sampleCnt) { 43 } 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 56