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1 /* | 1 /* |
2 * Copyright 2010 Google Inc. | 2 * Copyright 2010 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 GrDrawTarget_DEFINED | 8 #ifndef GrDrawTarget_DEFINED |
9 #define GrDrawTarget_DEFINED | 9 #define GrDrawTarget_DEFINED |
10 | 10 |
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93 * following assumptions are made: | 93 * following assumptions are made: |
94 * 1. The caller intends to somehow specify coverage. This can be | 94 * 1. The caller intends to somehow specify coverage. This can be |
95 * specified either by enabling a coverage stage on the GrDrawState or | 95 * specified either by enabling a coverage stage on the GrDrawState or |
96 * via the vertex layout. | 96 * via the vertex layout. |
97 * 2. Other than enabling coverage stages or enabling coverage in the | 97 * 2. Other than enabling coverage stages or enabling coverage in the |
98 * layout, the current configuration of the target's GrDrawState is as | 98 * layout, the current configuration of the target's GrDrawState is as |
99 * it will be at draw time. | 99 * it will be at draw time. |
100 */ | 100 */ |
101 bool canApplyCoverage() const; | 101 bool canApplyCoverage() const; |
102 | 102 |
103 /** When we're using coverage AA but the blend is incompatible (given gpu | |
104 * limitations) we should disable AA. */ | |
105 bool shouldDisableCoverageAAForBlend() { | |
106 // Enable below if we should draw with AA even when it produces | |
107 // incorrect blending. | |
108 // return false; | |
109 return !this->canApplyCoverage(); | |
110 } | |
111 | |
112 /** | 103 /** |
113 * Given the current draw state and hw support, will HW AA lines be used (if | 104 * Given the current draw state and hw support, will HW AA lines be used (if |
114 * a line primitive type is drawn)? | 105 * a line primitive type is drawn)? |
115 */ | 106 */ |
116 bool willUseHWAALines() const; | 107 bool willUseHWAALines() const; |
117 | 108 |
118 /** | 109 /** |
119 * There are three types of "sources" of geometry (vertices and indices) for | 110 * There are three types of "sources" of geometry (vertices and indices) for |
120 * draw calls made on the target. When performing an indexed draw, the | 111 * draw calls made on the target. When performing an indexed draw, the |
121 * indices and vertices can use different source types. Once a source is | 112 * indices and vertices can use different source types. Once a source is |
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886 const GrClipData* fClip; | 877 const GrClipData* fClip; |
887 GrDrawState* fDrawState; | 878 GrDrawState* fDrawState; |
888 GrDrawState fDefaultDraw
State; | 879 GrDrawState fDefaultDraw
State; |
889 // The context owns us, not vice-versa, so this ptr is not ref'ed by DrawTar
get. | 880 // The context owns us, not vice-versa, so this ptr is not ref'ed by DrawTar
get. |
890 GrContext* fContext; | 881 GrContext* fContext; |
891 | 882 |
892 typedef SkRefCnt INHERITED; | 883 typedef SkRefCnt INHERITED; |
893 }; | 884 }; |
894 | 885 |
895 #endif | 886 #endif |
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