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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 #ifndef GrTextBlobCache_DEFINED | 8 #ifndef GrTextBlobCache_DEFINED |
9 #define GrTextBlobCache_DEFINED | 9 #define GrTextBlobCache_DEFINED |
10 | 10 |
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23 GrTextBlobCache(PFOverBudgetCB cb, void* data) | 23 GrTextBlobCache(PFOverBudgetCB cb, void* data) |
24 : fPool(kPreAllocSize, kMinGrowthSize) | 24 : fPool(kPreAllocSize, kMinGrowthSize) |
25 , fCallback(cb) | 25 , fCallback(cb) |
26 , fData(data) | 26 , fData(data) |
27 , fBudget(kDefaultBudget) { | 27 , fBudget(kDefaultBudget) { |
28 SkASSERT(cb && data); | 28 SkASSERT(cb && data); |
29 } | 29 } |
30 ~GrTextBlobCache(); | 30 ~GrTextBlobCache(); |
31 | 31 |
32 // creates an uncached blob | 32 // creates an uncached blob |
33 GrAtlasTextBlob* createBlob(int glyphCount, int runCount, size_t maxVASize); | 33 GrAtlasTextBlob* createBlob(int glyphCount, int runCount) { |
34 GrAtlasTextBlob* createBlob(const SkTextBlob* blob, size_t maxVAStride) { | 34 return GrAtlasTextBlob::Create(&fPool, glyphCount, runCount); |
| 35 } |
| 36 GrAtlasTextBlob* createBlob(const SkTextBlob* blob) { |
35 int glyphCount = 0; | 37 int glyphCount = 0; |
36 int runCount = 0; | 38 int runCount = 0; |
37 BlobGlyphCount(&glyphCount, &runCount, blob); | 39 BlobGlyphCount(&glyphCount, &runCount, blob); |
38 GrAtlasTextBlob* cacheBlob = this->createBlob(glyphCount, runCount, maxV
AStride); | 40 GrAtlasTextBlob* cacheBlob = GrAtlasTextBlob::Create(&fPool, glyphCount,
runCount); |
39 return cacheBlob; | 41 return cacheBlob; |
40 } | 42 } |
41 | 43 |
42 static void SetupCacheBlobKey(GrAtlasTextBlob* cacheBlob, | |
43 const GrAtlasTextBlob::Key& key, | |
44 const SkMaskFilter::BlurRec& blurRec, | |
45 const SkPaint& paint) { | |
46 cacheBlob->fKey = key; | |
47 if (key.fHasBlur) { | |
48 cacheBlob->fBlurRec = blurRec; | |
49 } | |
50 if (key.fStyle != SkPaint::kFill_Style) { | |
51 cacheBlob->fStrokeInfo.fFrameWidth = paint.getStrokeWidth(); | |
52 cacheBlob->fStrokeInfo.fMiterLimit = paint.getStrokeMiter(); | |
53 cacheBlob->fStrokeInfo.fJoin = paint.getStrokeJoin(); | |
54 } | |
55 } | |
56 | |
57 GrAtlasTextBlob* createCachedBlob(const SkTextBlob* blob, | 44 GrAtlasTextBlob* createCachedBlob(const SkTextBlob* blob, |
58 const GrAtlasTextBlob::Key& key, | 45 const GrAtlasTextBlob::Key& key, |
59 const SkMaskFilter::BlurRec& blurRec, | 46 const SkMaskFilter::BlurRec& blurRec, |
60 const SkPaint& paint, | 47 const SkPaint& paint) { |
61 size_t maxVAStride) { | |
62 int glyphCount = 0; | 48 int glyphCount = 0; |
63 int runCount = 0; | 49 int runCount = 0; |
64 BlobGlyphCount(&glyphCount, &runCount, blob); | 50 BlobGlyphCount(&glyphCount, &runCount, blob); |
65 GrAtlasTextBlob* cacheBlob = this->createBlob(glyphCount, runCount, maxV
AStride); | 51 GrAtlasTextBlob* cacheBlob = GrAtlasTextBlob::Create(&fPool, glyphCount,
runCount); |
66 SetupCacheBlobKey(cacheBlob, key, blurRec, paint); | 52 cacheBlob->setupKey(key, blurRec, paint); |
67 this->add(cacheBlob); | 53 this->add(cacheBlob); |
68 return cacheBlob; | 54 return cacheBlob; |
69 } | 55 } |
70 | 56 |
71 GrAtlasTextBlob* find(const GrAtlasTextBlob::Key& key) { | 57 GrAtlasTextBlob* find(const GrAtlasTextBlob::Key& key) { |
72 return fCache.find(key); | 58 return fCache.find(key); |
73 } | 59 } |
74 | 60 |
75 void remove(GrAtlasTextBlob* blob) { | 61 void remove(GrAtlasTextBlob* blob) { |
76 fCache.remove(blob->fKey); | 62 fCache.remove(blob->key()); |
77 fBlobList.remove(blob); | 63 fBlobList.remove(blob); |
78 blob->unref(); | 64 blob->unref(); |
79 } | 65 } |
80 | 66 |
81 void add(GrAtlasTextBlob* blob) { | 67 void add(GrAtlasTextBlob* blob) { |
82 fCache.add(blob); | 68 fCache.add(blob); |
83 fBlobList.addToHead(blob); | 69 fBlobList.addToHead(blob); |
84 | 70 |
85 this->checkPurge(blob); | 71 this->checkPurge(blob); |
86 } | 72 } |
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112 private: | 98 private: |
113 typedef SkTInternalLList<GrAtlasTextBlob> BitmapBlobList; | 99 typedef SkTInternalLList<GrAtlasTextBlob> BitmapBlobList; |
114 | 100 |
115 void checkPurge(GrAtlasTextBlob* blob = nullptr) { | 101 void checkPurge(GrAtlasTextBlob* blob = nullptr) { |
116 // If we are overbudget, then unref until we are below budget again | 102 // If we are overbudget, then unref until we are below budget again |
117 if (fPool.size() > fBudget) { | 103 if (fPool.size() > fBudget) { |
118 BitmapBlobList::Iter iter; | 104 BitmapBlobList::Iter iter; |
119 iter.init(fBlobList, BitmapBlobList::Iter::kTail_IterStart); | 105 iter.init(fBlobList, BitmapBlobList::Iter::kTail_IterStart); |
120 GrAtlasTextBlob* lruBlob = nullptr; | 106 GrAtlasTextBlob* lruBlob = nullptr; |
121 while (fPool.size() > fBudget && (lruBlob = iter.get()) && lruBlob !
= blob) { | 107 while (fPool.size() > fBudget && (lruBlob = iter.get()) && lruBlob !
= blob) { |
122 fCache.remove(lruBlob->fKey); | 108 fCache.remove(lruBlob->key()); |
123 | 109 |
124 // Backup the iterator before removing and unrefing the blob | 110 // Backup the iterator before removing and unrefing the blob |
125 iter.prev(); | 111 iter.prev(); |
126 fBlobList.remove(lruBlob); | 112 fBlobList.remove(lruBlob); |
127 lruBlob->unref(); | 113 lruBlob->unref(); |
128 } | 114 } |
129 | 115 |
130 // If we break out of the loop with lruBlob == blob, then we haven't
purged enough | 116 // If we break out of the loop with lruBlob == blob, then we haven't
purged enough |
131 // use the call back and try to free some more. If we are still ove
rbudget after this, | 117 // use the call back and try to free some more. If we are still ove
rbudget after this, |
132 // then this single textblob is over our budget | 118 // then this single textblob is over our budget |
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149 static const int kDefaultBudget = 1 << 22; | 135 static const int kDefaultBudget = 1 << 22; |
150 BitmapBlobList fBlobList; | 136 BitmapBlobList fBlobList; |
151 SkTDynamicHash<GrAtlasTextBlob, GrAtlasTextBlob::Key> fCache; | 137 SkTDynamicHash<GrAtlasTextBlob, GrAtlasTextBlob::Key> fCache; |
152 GrMemoryPool fPool; | 138 GrMemoryPool fPool; |
153 PFOverBudgetCB fCallback; | 139 PFOverBudgetCB fCallback; |
154 void* fData; | 140 void* fData; |
155 size_t fBudget; | 141 size_t fBudget; |
156 }; | 142 }; |
157 | 143 |
158 #endif | 144 #endif |
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