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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 GrGLFragmentShaderBuilder_DEFINED | 8 #ifndef GrGLFragmentShaderBuilder_DEFINED |
| 9 #define GrGLFragmentShaderBuilder_DEFINED | 9 #define GrGLFragmentShaderBuilder_DEFINED |
| 10 | 10 |
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| 77 /** Returns a key for adding code to read the copy-of-dst color in service
of effects that | 77 /** Returns a key for adding code to read the copy-of-dst color in service
of effects that |
| 78 require reading the dst. It must not return 0 because 0 indicates that t
here is no dst | 78 require reading the dst. It must not return 0 because 0 indicates that t
here is no dst |
| 79 copy read at all (in which case this function should not be called). */ | 79 copy read at all (in which case this function should not be called). */ |
| 80 static DstReadKey KeyForDstRead(const GrTexture* dstCopy, const GrGLCaps&); | 80 static DstReadKey KeyForDstRead(const GrTexture* dstCopy, const GrGLCaps&); |
| 81 | 81 |
| 82 /** Returns a key for reading the fragment location. This should only be cal
led if there is an | 82 /** Returns a key for reading the fragment location. This should only be cal
led if there is an |
| 83 effect that will requires the fragment position. If the fragment position
is not required, | 83 effect that will requires the fragment position. If the fragment position
is not required, |
| 84 the key is 0. */ | 84 the key is 0. */ |
| 85 static FragPosKey KeyForFragmentPosition(const GrRenderTarget* dst, const Gr
GLCaps&); | 85 static FragPosKey KeyForFragmentPosition(const GrRenderTarget* dst, const Gr
GLCaps&); |
| 86 | 86 |
| 87 GrGLFragmentShaderBuilder(GrGLProgramBuilder* program, const GrGLProgramDesc
& desc); | 87 GrGLFragmentShaderBuilder(GrGLProgramBuilder* program, uint8_t fragPosKey); |
| 88 | 88 |
| 89 // true public interface, defined explicitly in the abstract interfaces abov
e | 89 // true public interface, defined explicitly in the abstract interfaces abov
e |
| 90 virtual bool enableFeature(GLSLFeature) SK_OVERRIDE; | 90 virtual bool enableFeature(GLSLFeature) SK_OVERRIDE; |
| 91 virtual SkString ensureFSCoords2D(const GrGLProcessor::TransformedCoordsArra
y& coords, | 91 virtual SkString ensureFSCoords2D(const GrGLProcessor::TransformedCoordsArra
y& coords, |
| 92 int index) SK_OVERRIDE; | 92 int index) SK_OVERRIDE; |
| 93 virtual const char* fragmentPosition() SK_OVERRIDE; | 93 virtual const char* fragmentPosition() SK_OVERRIDE; |
| 94 virtual const char* dstColor() SK_OVERRIDE; | 94 virtual const char* dstColor() SK_OVERRIDE; |
| 95 | 95 |
| 96 private: | 96 private: |
| 97 // Private public interface, used by GrGLProgramBuilder to build a fragment
shader | 97 // Private public interface, used by GrGLProgramBuilder to build a fragment
shader |
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| 155 bool fHasReadDstColor; | 155 bool fHasReadDstColor; |
| 156 bool fHasReadFragmentPosition; | 156 bool fHasReadFragmentPosition; |
| 157 | 157 |
| 158 friend class GrGLNvprProgramBuilder; | 158 friend class GrGLNvprProgramBuilder; |
| 159 friend class GrGLProgramBuilder; | 159 friend class GrGLProgramBuilder; |
| 160 | 160 |
| 161 typedef GrGLFPFragmentBuilder INHERITED; | 161 typedef GrGLFPFragmentBuilder INHERITED; |
| 162 }; | 162 }; |
| 163 | 163 |
| 164 #endif | 164 #endif |
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