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1 /* | 1 /* |
2 * Copyright 2013 Google Inc. | 2 * Copyright 2013 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 GrGLProgramDesc_DEFINED | 8 #ifndef GrGLProgramDesc_DEFINED |
9 #define GrGLProgramDesc_DEFINED | 9 #define GrGLProgramDesc_DEFINED |
10 | 10 |
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106 // Specifies where the initial color comes from before the stages are applie
d. | 106 // Specifies where the initial color comes from before the stages are applie
d. |
107 enum ColorInput { | 107 enum ColorInput { |
108 kSolidWhite_ColorInput, | 108 kSolidWhite_ColorInput, |
109 kTransBlack_ColorInput, | 109 kTransBlack_ColorInput, |
110 kAttribute_ColorInput, | 110 kAttribute_ColorInput, |
111 kUniform_ColorInput, | 111 kUniform_ColorInput, |
112 | 112 |
113 kColorInputCnt | 113 kColorInputCnt |
114 }; | 114 }; |
115 | 115 |
116 static GrSLConstantVec KnownColorInputValue(ColorInput ci) { | |
117 switch (ci) { | |
118 case GrGLProgramDesc::kTransBlack_ColorInput: | |
119 return kZeros_GrSLConstantVec; | |
120 case GrGLProgramDesc::kSolidWhite_ColorInput: | |
121 return kOnes_GrSLConstantVec; | |
122 default: | |
123 return kNone_GrSLConstantVec; | |
124 } | |
125 } | |
126 | |
127 enum CoverageOutput { | 116 enum CoverageOutput { |
128 // modulate color and coverage, write result as the color output. | 117 // modulate color and coverage, write result as the color output. |
129 kModulate_CoverageOutput, | 118 kModulate_CoverageOutput, |
130 // Writes color*coverage as the primary color output and also writes cov
erage as the | 119 // Writes color*coverage as the primary color output and also writes cov
erage as the |
131 // secondary output. Only set if dual source blending is supported. | 120 // secondary output. Only set if dual source blending is supported. |
132 kSecondaryCoverage_CoverageOutput, | 121 kSecondaryCoverage_CoverageOutput, |
133 // Writes color*coverage as the primary color output and also writes cov
erage * (1 - colorA) | 122 // Writes color*coverage as the primary color output and also writes cov
erage * (1 - colorA) |
134 // as the secondary output. Only set if dual source blending is supporte
d. | 123 // as the secondary output. Only set if dual source blending is supporte
d. |
135 kSecondaryCoverageISA_CoverageOutput, | 124 kSecondaryCoverageISA_CoverageOutput, |
136 // Writes color*coverage as the primary color output and also writes cov
erage * | 125 // Writes color*coverage as the primary color output and also writes cov
erage * |
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230 | 219 |
231 // GrGLProgram and GrGLShaderBuilder read the private fields to generate cod
e. TODO: Move all | 220 // GrGLProgram and GrGLShaderBuilder read the private fields to generate cod
e. TODO: Move all |
232 // code generation to GrGLShaderBuilder (and maybe add getters rather than f
riending). | 221 // code generation to GrGLShaderBuilder (and maybe add getters rather than f
riending). |
233 friend class GrGLProgram; | 222 friend class GrGLProgram; |
234 friend class GrGLShaderBuilder; | 223 friend class GrGLShaderBuilder; |
235 friend class GrGLFullShaderBuilder; | 224 friend class GrGLFullShaderBuilder; |
236 friend class GrGLFragmentOnlyShaderBuilder; | 225 friend class GrGLFragmentOnlyShaderBuilder; |
237 }; | 226 }; |
238 | 227 |
239 #endif | 228 #endif |
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