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1 /* | 1 /* |
2 * Copyright 2015 Google Inc. | 2 * Copyright 2015 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 #include "glsl/GrGLSLProgramBuilder.h" | 8 #include "glsl/GrGLSLProgramBuilder.h" |
9 | 9 |
10 #include "GrPipeline.h" | 10 #include "GrPipeline.h" |
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80 } | 80 } |
81 | 81 |
82 void GrGLSLProgramBuilder::emitAndInstallPrimProc(const GrPrimitiveProcessor& pr
oc, | 82 void GrGLSLProgramBuilder::emitAndInstallPrimProc(const GrPrimitiveProcessor& pr
oc, |
83 GrGLSLExpr4* outputColor, | 83 GrGLSLExpr4* outputColor, |
84 GrGLSLExpr4* outputCoverage) { | 84 GrGLSLExpr4* outputCoverage) { |
85 // Program builders have a bit of state we need to clear with each effect | 85 // Program builders have a bit of state we need to clear with each effect |
86 AutoStageAdvance adv(this); | 86 AutoStageAdvance adv(this); |
87 this->nameExpression(outputColor, "outputColor"); | 87 this->nameExpression(outputColor, "outputColor"); |
88 this->nameExpression(outputCoverage, "outputCoverage"); | 88 this->nameExpression(outputCoverage, "outputCoverage"); |
89 | 89 |
90 const char* distanceVectorName = nullptr; | |
91 if (this->fPipeline.usesDistanceVectorField() && proc.implementsDistanceVect
or()) { | |
92 distanceVectorName = fFS.distanceVectorName(); | |
93 fFS.codeAppend( "// Un-normalized vector to the closed geometric edge (i
n source space)\n"); | |
94 fFS.codeAppendf("vec2 %s;", distanceVectorName); | |
95 } | |
96 | |
97 // Enclose custom code in a block to avoid namespace conflicts | 90 // Enclose custom code in a block to avoid namespace conflicts |
98 SkString openBrace; | 91 SkString openBrace; |
99 openBrace.printf("{ // Stage %d, %s\n", fStageIndex, proc.name()); | 92 openBrace.printf("{ // Stage %d, %s\n", fStageIndex, proc.name()); |
100 fFS.codeAppend(openBrace.c_str()); | 93 fFS.codeAppend(openBrace.c_str()); |
101 fVS.codeAppendf("// Primitive Processor %s\n", proc.name()); | 94 fVS.codeAppendf("// Primitive Processor %s\n", proc.name()); |
102 | 95 |
103 SkASSERT(!fGeometryProcessor); | 96 SkASSERT(!fGeometryProcessor); |
104 fGeometryProcessor = proc.createGLSLInstance(*this->glslCaps()); | 97 fGeometryProcessor = proc.createGLSLInstance(*this->glslCaps()); |
105 | 98 |
106 SkSTArray<4, SamplerHandle> texSamplers(proc.numTextures()); | 99 SkSTArray<4, SamplerHandle> texSamplers(proc.numTextures()); |
107 SkSTArray<2, SamplerHandle> bufferSamplers(proc.numBuffers()); | 100 SkSTArray<2, SamplerHandle> bufferSamplers(proc.numBuffers()); |
108 this->emitSamplers(proc, &texSamplers, &bufferSamplers); | 101 this->emitSamplers(proc, &texSamplers, &bufferSamplers); |
109 | 102 |
110 GrGLSLGeometryProcessor::EmitArgs args(&fVS, | 103 GrGLSLGeometryProcessor::EmitArgs args(&fVS, |
111 &fFS, | 104 &fFS, |
112 this->varyingHandler(), | 105 this->varyingHandler(), |
113 this->uniformHandler(), | 106 this->uniformHandler(), |
114 this->glslCaps(), | 107 this->glslCaps(), |
115 proc, | 108 proc, |
116 outputColor->c_str(), | 109 outputColor->c_str(), |
117 outputCoverage->c_str(), | 110 outputCoverage->c_str(), |
118 distanceVectorName, | |
119 texSamplers.begin(), | 111 texSamplers.begin(), |
120 bufferSamplers.begin(), | 112 bufferSamplers.begin(), |
121 fCoordTransforms, | 113 fCoordTransforms, |
122 &fOutCoords); | 114 &fOutCoords); |
123 fGeometryProcessor->emitCode(args); | 115 fGeometryProcessor->emitCode(args); |
124 | 116 |
125 // We have to check that effects and the code they emit are consistent, ie i
f an effect | 117 // We have to check that effects and the code they emit are consistent, ie i
f an effect |
126 // asks for dst color, then the emit code needs to follow suit | 118 // asks for dst color, then the emit code needs to follow suit |
127 SkDEBUGCODE(verify(proc);) | 119 SkDEBUGCODE(verify(proc);) |
128 | 120 |
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162 this->emitSamplers(fp, &texSamplers, &bufferSamplers); | 154 this->emitSamplers(fp, &texSamplers, &bufferSamplers); |
163 | 155 |
164 GrGLSLFragmentProcessor::EmitArgs args(&fFS, | 156 GrGLSLFragmentProcessor::EmitArgs args(&fFS, |
165 this->uniformHandler(), | 157 this->uniformHandler(), |
166 this->glslCaps(), | 158 this->glslCaps(), |
167 fp, | 159 fp, |
168 output->c_str(), | 160 output->c_str(), |
169 input.isOnes() ? nullptr : input.c_st
r(), | 161 input.isOnes() ? nullptr : input.c_st
r(), |
170 fOutCoords[index], | 162 fOutCoords[index], |
171 texSamplers.begin(), | 163 texSamplers.begin(), |
172 bufferSamplers.begin(), | 164 bufferSamplers.begin()); |
173 this->primitiveProcessor().implements
DistanceVector()); | |
174 | |
175 fragProc->emitCode(args); | 165 fragProc->emitCode(args); |
176 | 166 |
177 // We have to check that effects and the code they emit are consistent, ie i
f an effect | 167 // We have to check that effects and the code they emit are consistent, ie i
f an effect |
178 // asks for dst color, then the emit code needs to follow suit | 168 // asks for dst color, then the emit code needs to follow suit |
179 SkDEBUGCODE(verify(fp);) | 169 SkDEBUGCODE(verify(fp);) |
180 fFragmentProcessors.push_back(fragProc); | 170 fFragmentProcessors.push_back(fragProc); |
181 | 171 |
182 fFS.codeAppend("}"); | 172 fFS.codeAppend("}"); |
183 } | 173 } |
184 | 174 |
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411 delete fFragmentProcessors[i]; | 401 delete fFragmentProcessors[i]; |
412 } | 402 } |
413 } | 403 } |
414 | 404 |
415 void GrGLSLProgramBuilder::finalizeShaders() { | 405 void GrGLSLProgramBuilder::finalizeShaders() { |
416 this->varyingHandler()->finalize(); | 406 this->varyingHandler()->finalize(); |
417 fVS.finalize(kVertex_GrShaderFlag); | 407 fVS.finalize(kVertex_GrShaderFlag); |
418 fFS.finalize(kFragment_GrShaderFlag); | 408 fFS.finalize(kFragment_GrShaderFlag); |
419 | 409 |
420 } | 410 } |
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