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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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24 // or more GrPlots. The GrPlots keep track of subimage placement via their GrRec
tanizer. Once a | 24 // or more GrPlots. The GrPlots keep track of subimage placement via their GrRec
tanizer. Once a |
25 // GrPlot is "full" (i.e. there is no room for the new subimage according to the
GrRectanizer), the | 25 // GrPlot is "full" (i.e. there is no room for the new subimage according to the
GrRectanizer), the |
26 // GrAtlas can request a new GrPlot via GrAtlasMgr::addToAtlas(). | 26 // GrAtlas can request a new GrPlot via GrAtlasMgr::addToAtlas(). |
27 // | 27 // |
28 // If all GrPlots are allocated, the replacement strategy is up to the client. T
he drawToken is | 28 // If all GrPlots are allocated, the replacement strategy is up to the client. T
he drawToken is |
29 // available to ensure that all draw calls are finished for that particular GrPl
ot. | 29 // available to ensure that all draw calls are finished for that particular GrPl
ot. |
30 // GrAtlasMgr::removeUnusedPlots() will free up any finished plots for a given G
rAtlas. | 30 // GrAtlasMgr::removeUnusedPlots() will free up any finished plots for a given G
rAtlas. |
31 | 31 |
32 class GrPlot { | 32 class GrPlot { |
33 public: | 33 public: |
| 34 SK_DECLARE_INTERNAL_LLIST_INTERFACE(GrPlot); |
| 35 |
34 int getOffsetX() const { return fOffset.fX; } | 36 int getOffsetX() const { return fOffset.fX; } |
35 int getOffsetY() const { return fOffset.fY; } | 37 int getOffsetY() const { return fOffset.fY; } |
36 | 38 |
37 GrTexture* texture() const { return fTexture; } | 39 GrTexture* texture() const { return fTexture; } |
38 | 40 |
39 bool addSubImage(int width, int height, const void*, GrIPoint16*); | 41 bool addSubImage(int width, int height, const void*, GrIPoint16*); |
40 | 42 |
41 GrDrawTarget::DrawToken drawToken() const { return fDrawToken; } | 43 GrDrawTarget::DrawToken drawToken() const { return fDrawToken; } |
42 void setDrawToken(GrDrawTarget::DrawToken draw) { fDrawToken = draw; } | 44 void setDrawToken(GrDrawTarget::DrawToken draw) { fDrawToken = draw; } |
43 | 45 |
| 46 void resetRects(); |
| 47 |
44 private: | 48 private: |
45 GrPlot(); | 49 GrPlot(); |
46 ~GrPlot(); // does not try to delete the fNext field | 50 ~GrPlot(); // does not try to delete the fNext field |
47 | 51 |
48 // for recycling | 52 // for recycling |
49 GrDrawTarget::DrawToken fDrawToken; | 53 GrDrawTarget::DrawToken fDrawToken; |
50 | 54 |
51 GrPlot* fNext; | |
52 | |
53 GrTexture* fTexture; | 55 GrTexture* fTexture; |
54 GrRectanizer* fRects; | 56 GrRectanizer* fRects; |
55 GrAtlasMgr* fAtlasMgr; | 57 GrAtlasMgr* fAtlasMgr; |
56 GrIPoint16 fOffset; | 58 GrIPoint16 fOffset; |
57 size_t fBytesPerPixel; | 59 size_t fBytesPerPixel; |
58 | 60 |
59 friend class GrAtlasMgr; | 61 friend class GrAtlasMgr; |
60 }; | 62 }; |
61 | 63 |
| 64 typedef SkTInternalLList<GrPlot> GrPlotList; |
| 65 |
62 class GrAtlasMgr { | 66 class GrAtlasMgr { |
63 public: | 67 public: |
64 GrAtlasMgr(GrGpu*, GrPixelConfig); | 68 GrAtlasMgr(GrGpu*, GrPixelConfig); |
65 ~GrAtlasMgr(); | 69 ~GrAtlasMgr(); |
66 | 70 |
67 // add subimage of width, height dimensions to atlas | 71 // add subimage of width, height dimensions to atlas |
68 // returns the containing GrPlot and location relative to the backing textur
e | 72 // returns the containing GrPlot and location relative to the backing textur
e |
69 GrPlot* addToAtlas(GrAtlas*, int width, int height, const void*, GrIPoint16*
); | 73 GrPlot* addToAtlas(GrAtlas*, int width, int height, const void*, GrIPoint16*
); |
70 | 74 |
71 // free up any plots that are not waiting on a draw call | 75 // remove reference to this plot |
72 bool removeUnusedPlots(GrAtlas* atlas); | 76 bool removePlot(GrAtlas* atlas, const GrPlot* plot); |
73 | 77 |
74 // to be called by ~GrAtlas() | 78 // get a plot that's not being used by the current draw |
75 void deletePlotList(GrPlot* plot); | 79 // this allows us to overwrite this plot without flushing |
| 80 GrPlot* getUnusedPlot(); |
76 | 81 |
77 GrTexture* getTexture() const { | 82 GrTexture* getTexture() const { |
78 return fTexture; | 83 return fTexture; |
79 } | 84 } |
80 | 85 |
81 private: | 86 private: |
82 GrPlot* allocPlot(); | 87 void moveToHead(GrPlot* plot); |
83 void freePlot(GrPlot* plot); | |
84 | 88 |
85 GrGpu* fGpu; | 89 GrGpu* fGpu; |
86 GrPixelConfig fPixelConfig; | 90 GrPixelConfig fPixelConfig; |
87 GrTexture* fTexture; | 91 GrTexture* fTexture; |
88 | 92 |
89 // allocated array of GrPlots | 93 // allocated array of GrPlots |
90 GrPlot* fPlots; | 94 GrPlot* fPlotArray; |
91 // linked list of free GrPlots | 95 // LRU list of GrPlots |
92 GrPlot* fFreePlots; | 96 GrPlotList fPlotList; |
93 }; | 97 }; |
94 | 98 |
95 class GrAtlas { | 99 class GrAtlas { |
96 public: | 100 public: |
97 GrAtlas(GrAtlasMgr* mgr) : fPlots(NULL), fAtlasMgr(mgr) { } | 101 GrAtlas() { } |
98 ~GrAtlas() { fAtlasMgr->deletePlotList(fPlots); } | 102 ~GrAtlas() { } |
99 | 103 |
100 bool isEmpty() { return NULL == fPlots; } | 104 bool isEmpty() { return 0 == fPlots.count(); } |
101 | 105 |
102 SkISize getSize() const; | 106 SkISize getSize() const; |
103 | 107 |
104 private: | 108 private: |
105 GrPlot* fPlots; | 109 SkTDArray<GrPlot*> fPlots; |
106 GrAtlasMgr* fAtlasMgr; | |
107 | 110 |
108 friend class GrAtlasMgr; | 111 friend class GrAtlasMgr; |
109 }; | 112 }; |
110 | 113 |
111 #endif | 114 #endif |
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