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1 /* | 1 /* |
2 * Copyright 2014 Google Inc. | 2 * Copyright 2014 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 GrXferProcessor_DEFINED | 8 #ifndef GrXferProcessor_DEFINED |
9 #define GrXferProcessor_DEFINED | 9 #define GrXferProcessor_DEFINED |
10 | 10 |
11 #include "GrBlend.h" | 11 #include "GrBlend.h" |
12 #include "GrColor.h" | 12 #include "GrColor.h" |
13 #include "GrProcessor.h" | 13 #include "GrProcessor.h" |
14 #include "GrTexture.h" | 14 #include "GrTexture.h" |
15 #include "GrTypes.h" | 15 #include "GrTypes.h" |
16 #include "SkXfermode.h" | 16 #include "SkXfermode.h" |
17 | 17 |
18 class GrShaderCaps; | 18 class GrShaderCaps; |
19 class GrGLSLCaps; | 19 class GrGLSLCaps; |
20 class GrGLXferProcessor; | 20 class GrGLSLXferProcessor; |
21 class GrProcOptInfo; | 21 class GrProcOptInfo; |
22 | 22 |
23 /** | 23 /** |
24 * Barriers for blending. When a shader reads the dst directly, an Xfer barrier
is sometimes | 24 * Barriers for blending. When a shader reads the dst directly, an Xfer barrier
is sometimes |
25 * required after a pixel has been written, before it can be safely read again. | 25 * required after a pixel has been written, before it can be safely read again. |
26 */ | 26 */ |
27 enum GrXferBarrierType { | 27 enum GrXferBarrierType { |
28 kNone_GrXferBarrierType = 0, //<! No barrier is required | 28 kNone_GrXferBarrierType = 0, //<! No barrier is required |
29 kTexture_GrXferBarrierType, //<! Required when a shader reads and renders t
o the same texture. | 29 kTexture_GrXferBarrierType, //<! Required when a shader reads and renders t
o the same texture. |
30 kBlend_GrXferBarrierType, //<! Required by certain blend extensions. | 30 kBlend_GrXferBarrierType, //<! Required by certain blend extensions. |
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93 | 93 |
94 /** | 94 /** |
95 * Sets a unique key on the GrProcessorKeyBuilder calls onGetGLProcessorKey(
...) to get the | 95 * Sets a unique key on the GrProcessorKeyBuilder calls onGetGLProcessorKey(
...) to get the |
96 * specific subclass's key. | 96 * specific subclass's key. |
97 */ | 97 */ |
98 void getGLProcessorKey(const GrGLSLCaps& caps, GrProcessorKeyBuilder* b) con
st; | 98 void getGLProcessorKey(const GrGLSLCaps& caps, GrProcessorKeyBuilder* b) con
st; |
99 | 99 |
100 /** Returns a new instance of the appropriate *GL* implementation class | 100 /** Returns a new instance of the appropriate *GL* implementation class |
101 for the given GrXferProcessor; caller is responsible for deleting | 101 for the given GrXferProcessor; caller is responsible for deleting |
102 the object. */ | 102 the object. */ |
103 virtual GrGLXferProcessor* createGLInstance() const = 0; | 103 virtual GrGLSLXferProcessor* createGLInstance() const = 0; |
104 | 104 |
105 /** | 105 /** |
106 * Optimizations for blending / coverage that an OptDrawState should apply t
o itself. | 106 * Optimizations for blending / coverage that an OptDrawState should apply t
o itself. |
107 */ | 107 */ |
108 enum OptFlags { | 108 enum OptFlags { |
109 /** | 109 /** |
110 * The draw can be skipped completely. | 110 * The draw can be skipped completely. |
111 */ | 111 */ |
112 kSkipDraw_OptFlag = 0x1, | 112 kSkipDraw_OptFlag = 0x1, |
113 /** | 113 /** |
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400 enum { | 400 enum { |
401 kIllegalXPFClassID = 0, | 401 kIllegalXPFClassID = 0, |
402 }; | 402 }; |
403 static int32_t gCurrXPFClassID; | 403 static int32_t gCurrXPFClassID; |
404 | 404 |
405 typedef GrProgramElement INHERITED; | 405 typedef GrProgramElement INHERITED; |
406 }; | 406 }; |
407 | 407 |
408 #endif | 408 #endif |
409 | 409 |
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