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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 GrGLSLFragmentShaderBuilder_DEFINED | 8 #ifndef GrGLSLFragmentShaderBuilder_DEFINED |
9 #define GrGLSLFragmentShaderBuilder_DEFINED | 9 #define GrGLSLFragmentShaderBuilder_DEFINED |
10 | 10 |
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26 , fHasSecondaryOutput(false) { | 26 , fHasSecondaryOutput(false) { |
27 fSubstageIndices.push_back(0); | 27 fSubstageIndices.push_back(0); |
28 } | 28 } |
29 virtual ~GrGLSLFragmentBuilder() {} | 29 virtual ~GrGLSLFragmentBuilder() {} |
30 /** | 30 /** |
31 * Use of these features may require a GLSL extension to be enabled. Shaders
may not compile | 31 * Use of these features may require a GLSL extension to be enabled. Shaders
may not compile |
32 * if code is added that uses one of these features without calling enableFe
ature() | 32 * if code is added that uses one of these features without calling enableFe
ature() |
33 */ | 33 */ |
34 enum GLSLFeature { | 34 enum GLSLFeature { |
35 kStandardDerivatives_GLSLFeature = kLastGLSLPrivateFeature + 1, | 35 kStandardDerivatives_GLSLFeature = kLastGLSLPrivateFeature + 1, |
36 kPixelLocalStorage_GLSLFeature, | 36 kPixelLocalStorage_GLSLFeature |
37 kSampleVariables_GLSLFeature, | |
38 kSampleMaskOverrideCoverage_GLSLFeature | |
39 }; | 37 }; |
40 | 38 |
41 /** | 39 /** |
42 * If the feature is supported then true is returned and any necessary #exte
nsion declarations | 40 * If the feature is supported then true is returned and any necessary #exte
nsion declarations |
43 * are added to the shaders. If the feature is not supported then false will
be returned. | 41 * are added to the shaders. If the feature is not supported then false will
be returned. |
44 */ | 42 */ |
45 virtual bool enableFeature(GLSLFeature) = 0; | 43 virtual bool enableFeature(GLSLFeature) = 0; |
46 | 44 |
47 /** | 45 /** |
48 * This returns a variable name to access the 2D, perspective correct versio
n of the coords in | 46 * This returns a variable name to access the 2D, perspective correct versio
n of the coords in |
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187 bool fHasReadDstColor; | 185 bool fHasReadDstColor; |
188 bool fHasReadFragmentPosition; | 186 bool fHasReadFragmentPosition; |
189 | 187 |
190 friend class GrGLSLProgramBuilder; | 188 friend class GrGLSLProgramBuilder; |
191 friend class GrGLProgramBuilder; | 189 friend class GrGLProgramBuilder; |
192 | 190 |
193 typedef GrGLSLXPFragmentBuilder INHERITED; | 191 typedef GrGLSLXPFragmentBuilder INHERITED; |
194 }; | 192 }; |
195 | 193 |
196 #endif | 194 #endif |
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