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1 | 1 |
2 /* | 2 /* |
3 * Copyright 2010 Google Inc. | 3 * Copyright 2010 Google Inc. |
4 * | 4 * |
5 * Use of this source code is governed by a BSD-style license that can be | 5 * Use of this source code is governed by a BSD-style license that can be |
6 * found in the LICENSE file. | 6 * found in the LICENSE file. |
7 */ | 7 */ |
8 | 8 |
9 #ifndef GrAtlas_DEFINED | 9 #ifndef GrAtlas_DEFINED |
10 #define GrAtlas_DEFINED | 10 #define GrAtlas_DEFINED |
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74 typedef SkTInternalLList<GrPlot> GrPlotList; | 74 typedef SkTInternalLList<GrPlot> GrPlotList; |
75 | 75 |
76 class GrAtlas { | 76 class GrAtlas { |
77 public: | 77 public: |
78 // This class allows each client to independently track the GrPlots in | 78 // This class allows each client to independently track the GrPlots in |
79 // which its data is stored. | 79 // which its data is stored. |
80 class ClientPlotUsage { | 80 class ClientPlotUsage { |
81 public: | 81 public: |
82 bool isEmpty() const { return 0 == fPlots.count(); } | 82 bool isEmpty() const { return 0 == fPlots.count(); } |
83 | 83 |
| 84 #ifdef SK_DEBUG |
| 85 bool contains(const GrPlot* plot) const { |
| 86 return fPlots.contains(const_cast<GrPlot*>(plot)); |
| 87 } |
| 88 #endif |
| 89 |
84 private: | 90 private: |
85 SkTDArray<GrPlot*> fPlots; | 91 SkTDArray<GrPlot*> fPlots; |
86 | 92 |
87 friend class GrAtlas; | 93 friend class GrAtlas; |
88 }; | 94 }; |
89 | 95 |
90 GrAtlas(GrGpu*, GrPixelConfig, GrTextureFlags flags, | 96 GrAtlas(GrGpu*, GrPixelConfig, GrTextureFlags flags, |
91 const SkISize& backingTextureSize, | 97 const SkISize& backingTextureSize, |
92 int numPlotsX, int numPlotsY, bool batchUploads); | 98 int numPlotsX, int numPlotsY, bool batchUploads); |
93 ~GrAtlas(); | 99 ~GrAtlas(); |
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105 // get a plot that's not being used by the current draw | 111 // get a plot that's not being used by the current draw |
106 // this allows us to overwrite this plot without flushing | 112 // this allows us to overwrite this plot without flushing |
107 GrPlot* getUnusedPlot(); | 113 GrPlot* getUnusedPlot(); |
108 | 114 |
109 GrTexture* getTexture() const { | 115 GrTexture* getTexture() const { |
110 return fTexture; | 116 return fTexture; |
111 } | 117 } |
112 | 118 |
113 void uploadPlotsToTexture(); | 119 void uploadPlotsToTexture(); |
114 | 120 |
| 121 enum IterOrder { |
| 122 kLRUFirst_IterOrder, |
| 123 kMRUFirst_IterOrder |
| 124 }; |
| 125 |
| 126 typedef GrPlotList::Iter PlotIter; |
| 127 GrPlot* iterInit(PlotIter* iter, IterOrder order) { |
| 128 return iter->init(fPlotList, kLRUFirst_IterOrder == order |
| 129 ? GrPlotList::Iter::kTail
_IterStart |
| 130 : GrPlotList::Iter::kHead
_IterStart); |
| 131 } |
| 132 |
115 private: | 133 private: |
116 void makeMRU(GrPlot* plot); | 134 void makeMRU(GrPlot* plot); |
117 | 135 |
118 GrGpu* fGpu; | 136 GrGpu* fGpu; |
119 GrPixelConfig fPixelConfig; | 137 GrPixelConfig fPixelConfig; |
120 GrTextureFlags fFlags; | 138 GrTextureFlags fFlags; |
121 GrTexture* fTexture; | 139 GrTexture* fTexture; |
122 SkISize fBackingTextureSize; | 140 SkISize fBackingTextureSize; |
123 int fNumPlotsX; | 141 int fNumPlotsX; |
124 int fNumPlotsY; | 142 int fNumPlotsY; |
125 bool fBatchUploads; | 143 bool fBatchUploads; |
126 | 144 |
127 // allocated array of GrPlots | 145 // allocated array of GrPlots |
128 GrPlot* fPlotArray; | 146 GrPlot* fPlotArray; |
129 // LRU list of GrPlots (MRU at head - LRU at tail) | 147 // LRU list of GrPlots (MRU at head - LRU at tail) |
130 GrPlotList fPlotList; | 148 GrPlotList fPlotList; |
131 }; | 149 }; |
132 | 150 |
133 #endif | 151 #endif |
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