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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 |
11 #include "GrGLSLShaderBuilder.h" | 11 #include "GrGLSLShaderBuilder.h" |
12 | 12 |
| 13 #include "GrProcessor.h" |
13 #include "glsl/GrGLSLProcessorTypes.h" | 14 #include "glsl/GrGLSLProcessorTypes.h" |
14 | 15 |
15 class GrRenderTarget; | 16 class GrRenderTarget; |
16 class GrGLSLVarying; | 17 class GrGLSLVarying; |
17 | 18 |
18 /* | 19 /* |
19 * This base class encapsulates the common functionality which all processors us
e to build fragment | 20 * This base class encapsulates the common functionality which all processors us
e to build fragment |
20 * shaders. | 21 * shaders. |
21 */ | 22 */ |
22 class GrGLSLFragmentBuilder : public GrGLSLShaderBuilder { | 23 class GrGLSLFragmentBuilder : public GrGLSLShaderBuilder { |
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158 void onBeforeChildProcEmitCode() override; | 159 void onBeforeChildProcEmitCode() override; |
159 void onAfterChildProcEmitCode() override; | 160 void onAfterChildProcEmitCode() override; |
160 | 161 |
161 // GrGLSLXPFragmentBuilder interface. | 162 // GrGLSLXPFragmentBuilder interface. |
162 bool hasCustomColorOutput() const override { return fHasCustomColorOutput; } | 163 bool hasCustomColorOutput() const override { return fHasCustomColorOutput; } |
163 bool hasSecondaryOutput() const override { return fHasSecondaryOutput; } | 164 bool hasSecondaryOutput() const override { return fHasSecondaryOutput; } |
164 const char* dstColor() override; | 165 const char* dstColor() override; |
165 void enableAdvancedBlendEquationIfNeeded(GrBlendEquation) override; | 166 void enableAdvancedBlendEquationIfNeeded(GrBlendEquation) override; |
166 | 167 |
167 private: | 168 private: |
| 169 bool hasFragmentPosition() const; |
| 170 |
168 // Private public interface, used by GrGLProgramBuilder to build a fragment
shader | 171 // Private public interface, used by GrGLProgramBuilder to build a fragment
shader |
169 void enableCustomOutput(); | 172 void enableCustomOutput(); |
170 void enableSecondaryOutput(); | 173 void enableSecondaryOutput(); |
171 const char* getPrimaryColorOutputName() const; | 174 const char* getPrimaryColorOutputName() const; |
172 const char* getSecondaryColorOutputName() const; | 175 const char* getSecondaryColorOutputName() const; |
173 | 176 |
| 177 #ifdef SK_DEBUG |
174 // As GLSLProcessors emit code, there are some conditions we need to verify.
We use the below | 178 // As GLSLProcessors emit code, there are some conditions we need to verify.
We use the below |
175 // state to track this. The reset call is called per processor emitted. | 179 // state to track this. The reset call is called per processor emitted. |
| 180 GrProcessor::RequiredFeatures usedProcessorFeatures() const { return fUsedPr
ocessorFeatures; } |
176 bool hasReadDstColor() const { return fHasReadDstColor; } | 181 bool hasReadDstColor() const { return fHasReadDstColor; } |
177 bool hasReadFragmentPosition() const { return fHasReadFragmentPosition; } | 182 void resetVerification() { |
178 void reset() { | 183 fUsedProcessorFeatures = GrProcessor::kNone_RequiredFeatures; |
179 fHasReadDstColor = false; | 184 fHasReadDstColor = false; |
180 fHasReadFragmentPosition = false; | |
181 } | 185 } |
| 186 #endif |
182 | 187 |
183 static const char* DeclaredColorOutputName() { return "fsColorOut"; } | 188 static const char* DeclaredColorOutputName() { return "fsColorOut"; } |
184 static const char* DeclaredSecondaryColorOutputName() { return "fsSecondaryC
olorOut"; } | 189 static const char* DeclaredSecondaryColorOutputName() { return "fsSecondaryC
olorOut"; } |
185 | 190 |
186 /* | 191 /* |
187 * An internal call for GrGLProgramBuilder to use to add varyings to the ver
tex shader | 192 * An internal call for GrGLProgramBuilder to use to add varyings to the ver
tex shader |
188 */ | 193 */ |
189 void addVarying(GrGLSLVarying*, GrSLPrecision); | 194 void addVarying(GrGLSLVarying*, GrSLPrecision); |
190 | 195 |
191 void onFinalize() override; | 196 void onFinalize() override; |
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219 */ | 224 */ |
220 SkString fMangleString; | 225 SkString fMangleString; |
221 | 226 |
222 bool fSetupFragPosition; | 227 bool fSetupFragPosition; |
223 bool fTopLeftFragPosRead; | 228 bool fTopLeftFragPosRead; |
224 bool fHasCustomColorOutput; | 229 bool fHasCustomColorOutput; |
225 int fCustomColorOutputIndex; | 230 int fCustomColorOutputIndex; |
226 bool fHasSecondaryOutput; | 231 bool fHasSecondaryOutput; |
227 bool fHasInitializedSampleMask; | 232 bool fHasInitializedSampleMask; |
228 | 233 |
| 234 #ifdef SK_DEBUG |
229 // some state to verify shaders and effects are consistent, this is reset be
tween effects by | 235 // some state to verify shaders and effects are consistent, this is reset be
tween effects by |
230 // the program creator | 236 // the program creator |
| 237 GrProcessor::RequiredFeatures fUsedProcessorFeatures; |
231 bool fHasReadDstColor; | 238 bool fHasReadDstColor; |
232 bool fHasReadFragmentPosition; | 239 #endif |
233 | 240 |
234 friend class GrGLSLProgramBuilder; | 241 friend class GrGLSLProgramBuilder; |
235 friend class GrGLProgramBuilder; | 242 friend class GrGLProgramBuilder; |
236 }; | 243 }; |
237 | 244 |
238 #endif | 245 #endif |
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