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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::GenerateRe
sourceType(); | |
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 cpuBacke
d) | |
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 | |
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