1 2 /* 3 * Copyright 2010 Google Inc. 4 * 5 * Use of this source code is governed by a BSD-style license that can be 6 * found in the LICENSE file. 7 */ 8 9 10 11 #ifndef GrVertexBuffer_DEFINED 12 #define GrVertexBuffer_DEFINED 13 14 #include "GrGeometryBuffer.h" 15 16 class GrVertexBuffer : public GrGeometryBuffer { 17 public: 18 static void ComputeScratchKey(size_t size, bool dynamic, GrScratchKey* key) { 19 static const GrScratchKey::ResourceType kType = GrScratchKey::GenerateResourceType(); 20 21 GrScratchKey::Builder builder(key, kType, 2); 22 23 builder[0] = SkToUInt(size); 24 builder[1] = dynamic ? 1 : 0; 25 } 26 27 protected: 28 GrVertexBuffer(GrGpu* gpu, size_t gpuMemorySize, bool dynamic, bool cpuBacked) 29 : INHERITED(gpu, gpuMemorySize, dynamic, cpuBacked) { 30 // We currently only make buffers scratch if they're both pow2 sized and not cpuBacked. 31 if (!cpuBacked && SkIsPow2(gpuMemorySize)) { 32 GrScratchKey key; 33 ComputeScratchKey(gpuMemorySize, dynamic, &key); 34 this->setScratchKey(key); 35 } 36 } 37 38 private: 39 typedef GrGeometryBuffer INHERITED; 40 }; 41 42 #endif 43
