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| 1 /* |
| 2 * Copyright 2015 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 #include "GrResourceProvider.h" |
| 9 |
| 10 #include "GrGpu.h" |
| 11 #include "GrResourceCache.h" |
| 12 #include "GrResourceKey.h" |
| 13 #include "GrVertexBuffer.h" |
| 14 |
| 15 GR_DECLARE_STATIC_UNIQUE_KEY(gQuadIndexBufferKey); |
| 16 |
| 17 GrResourceProvider::GrResourceProvider(GrGpu* gpu, GrResourceCache* cache) : INH
ERITED(gpu, cache) { |
| 18 GR_DEFINE_STATIC_UNIQUE_KEY(gQuadIndexBufferKey); |
| 19 fQuadIndexBufferKey = gQuadIndexBufferKey; |
| 20 } |
| 21 |
| 22 const GrIndexBuffer* GrResourceProvider::createInstancedIndexBuffer(const uint16
_t* pattern, |
| 23 int patternS
ize, |
| 24 int reps, |
| 25 int vertCoun
t, |
| 26 const GrUniq
ueKey& key) { |
| 27 size_t bufferSize = patternSize * reps * sizeof(uint16_t); |
| 28 |
| 29 GrIndexBuffer* buffer = this->gpu()->createIndexBuffer(bufferSize, /* dynami
c = */ false); |
| 30 if (!buffer) { |
| 31 return NULL; |
| 32 } |
| 33 uint16_t* data = (uint16_t*) buffer->map(); |
| 34 bool useTempData = (NULL == data); |
| 35 if (useTempData) { |
| 36 data = SkNEW_ARRAY(uint16_t, reps * patternSize); |
| 37 } |
| 38 for (int i = 0; i < reps; ++i) { |
| 39 int baseIdx = i * patternSize; |
| 40 uint16_t baseVert = (uint16_t)(i * vertCount); |
| 41 for (int j = 0; j < patternSize; ++j) { |
| 42 data[baseIdx+j] = baseVert + pattern[j]; |
| 43 } |
| 44 } |
| 45 if (useTempData) { |
| 46 if (!buffer->updateData(data, bufferSize)) { |
| 47 buffer->unref(); |
| 48 return NULL; |
| 49 } |
| 50 SkDELETE_ARRAY(data); |
| 51 } else { |
| 52 buffer->unmap(); |
| 53 } |
| 54 this->assignUniqueKeyToResource(key, buffer); |
| 55 return buffer; |
| 56 } |
| 57 |
| 58 const GrIndexBuffer* GrResourceProvider::createQuadIndexBuffer() { |
| 59 static const int kMaxQuads = 1 << 12; // max possible: (1 << 14) - 1; |
| 60 GR_STATIC_ASSERT(4 * kMaxQuads <= 65535); |
| 61 static const uint16_t kPattern[] = { 0, 1, 2, 0, 2, 3 }; |
| 62 |
| 63 return this->createInstancedIndexBuffer(kPattern, 6, kMaxQuads, 4, fQuadInde
xBufferKey); |
| 64 } |
| 65 |
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