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1 /* | 1 /* |
2 * Copyright 2015 Google Inc. | 2 * Copyright 2015 Google Inc. |
3 * | 3 * |
4 * Use of this source code is governed by a BSD-style license that can be | 4 * Use of this source code is governed by a BSD-style license that can be |
5 * found in the LICENSE file. | 5 * found in the LICENSE file. |
6 */ | 6 */ |
7 | 7 |
8 #include "GrTextBlobCache.h" | 8 #include "GrTextBlobCache.h" |
9 | 9 |
10 static const int kVerticesPerGlyph = 4; | |
11 | |
12 GrTextBlobCache::~GrTextBlobCache() { | 10 GrTextBlobCache::~GrTextBlobCache() { |
13 this->freeAll(); | 11 this->freeAll(); |
14 } | 12 } |
15 | 13 |
16 GrAtlasTextBlob* GrTextBlobCache::createBlob(int glyphCount, int runCount, size_
t maxVASize) { | |
17 // We allocate size for the GrAtlasTextBlob itself, plus size for the vertic
es array, | |
18 // and size for the glyphIds array. | |
19 size_t verticesCount = glyphCount * kVerticesPerGlyph * maxVASize; | |
20 size_t size = sizeof(GrAtlasTextBlob) + | |
21 verticesCount + | |
22 glyphCount * sizeof(GrGlyph**) + | |
23 sizeof(GrAtlasTextBlob::Run) * runCount; | |
24 | |
25 void* allocation = fPool.allocate(size); | |
26 if (CACHE_SANITY_CHECK) { | |
27 sk_bzero(allocation, size); | |
28 } | |
29 | |
30 GrAtlasTextBlob* cacheBlob = new (allocation) GrAtlasTextBlob; | |
31 cacheBlob->fSize = size; | |
32 | |
33 // setup offsets for vertices / glyphs | |
34 cacheBlob->fVertices = sizeof(GrAtlasTextBlob) + reinterpret_cast<unsigned c
har*>(cacheBlob); | |
35 cacheBlob->fGlyphs = reinterpret_cast<GrGlyph**>(cacheBlob->fVertices + vert
icesCount); | |
36 cacheBlob->fRuns = reinterpret_cast<GrAtlasTextBlob::Run*>(cacheBlob->fGlyph
s + glyphCount); | |
37 | |
38 // Initialize runs | |
39 for (int i = 0; i < runCount; i++) { | |
40 new (&cacheBlob->fRuns[i]) GrAtlasTextBlob::Run; | |
41 } | |
42 cacheBlob->fRunCount = runCount; | |
43 cacheBlob->fPool = &fPool; | |
44 return cacheBlob; | |
45 } | |
46 | |
47 void GrTextBlobCache::freeAll() { | 14 void GrTextBlobCache::freeAll() { |
48 SkTDynamicHash<GrAtlasTextBlob, GrAtlasTextBlob::Key>::Iter iter(&fCache); | 15 SkTDynamicHash<GrAtlasTextBlob, GrAtlasTextBlob::Key>::Iter iter(&fCache); |
49 while (!iter.done()) { | 16 while (!iter.done()) { |
50 GrAtlasTextBlob* blob = &(*iter); | 17 GrAtlasTextBlob* blob = &(*iter); |
51 fBlobList.remove(blob); | 18 fBlobList.remove(blob); |
52 blob->unref(); | 19 blob->unref(); |
53 ++iter; | 20 ++iter; |
54 } | 21 } |
55 fCache.rewind(); | 22 fCache.rewind(); |
56 | 23 |
57 // There should be no allocations in the memory pool at this point | 24 // There should be no allocations in the memory pool at this point |
58 SkASSERT(fPool.isEmpty()); | 25 SkASSERT(fPool.isEmpty()); |
59 } | 26 } |
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