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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 #include "SkAlphaThresholdFilter.h" | 8 #include "SkAlphaThresholdFilter.h" |
| 9 #include "SkBitmap.h" | 9 #include "SkBitmap.h" |
| 10 #include "SkDevice.h" | 10 #include "SkDevice.h" |
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| 51 #include "GrContext.h" | 51 #include "GrContext.h" |
| 52 #include "GrCoordTransform.h" | 52 #include "GrCoordTransform.h" |
| 53 #include "GrFragmentProcessor.h" | 53 #include "GrFragmentProcessor.h" |
| 54 #include "GrInvariantOutput.h" | 54 #include "GrInvariantOutput.h" |
| 55 #include "GrTextureAccess.h" | 55 #include "GrTextureAccess.h" |
| 56 #include "effects/GrPorterDuffXferProcessor.h" | 56 #include "effects/GrPorterDuffXferProcessor.h" |
| 57 | 57 |
| 58 #include "SkGr.h" | 58 #include "SkGr.h" |
| 59 | 59 |
| 60 #include "gl/GrGLFragmentProcessor.h" | 60 #include "gl/GrGLFragmentProcessor.h" |
| 61 #include "gl/builders/GrGLProgramBuilder.h" | 61 #include "glsl/GrGLSLFragmentShaderBuilder.h" |
| 62 #include "glsl/GrGLSLProgramBuilder.h" |
| 62 #include "glsl/GrGLSLProgramDataManager.h" | 63 #include "glsl/GrGLSLProgramDataManager.h" |
| 63 | 64 |
| 64 class AlphaThresholdEffect : public GrFragmentProcessor { | 65 class AlphaThresholdEffect : public GrFragmentProcessor { |
| 65 | 66 |
| 66 public: | 67 public: |
| 67 static GrFragmentProcessor* Create(GrTexture* texture, | 68 static GrFragmentProcessor* Create(GrTexture* texture, |
| 68 GrTexture* maskTexture, | 69 GrTexture* maskTexture, |
| 69 float innerThreshold, | 70 float innerThreshold, |
| 70 float outerThreshold) { | 71 float outerThreshold) { |
| 71 return new AlphaThresholdEffect(texture, maskTexture, innerThreshold, ou
terThreshold); | 72 return new AlphaThresholdEffect(texture, maskTexture, innerThreshold, ou
terThreshold); |
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| 131 | 132 |
| 132 private: | 133 private: |
| 133 | 134 |
| 134 GrGLSLProgramDataManager::UniformHandle fInnerThresholdVar; | 135 GrGLSLProgramDataManager::UniformHandle fInnerThresholdVar; |
| 135 GrGLSLProgramDataManager::UniformHandle fOuterThresholdVar; | 136 GrGLSLProgramDataManager::UniformHandle fOuterThresholdVar; |
| 136 | 137 |
| 137 typedef GrGLFragmentProcessor INHERITED; | 138 typedef GrGLFragmentProcessor INHERITED; |
| 138 }; | 139 }; |
| 139 | 140 |
| 140 void GrGLAlphaThresholdEffect::emitCode(EmitArgs& args) { | 141 void GrGLAlphaThresholdEffect::emitCode(EmitArgs& args) { |
| 141 fInnerThresholdVar = args.fBuilder->addUniform( | 142 fInnerThresholdVar = args.fBuilder->addUniform(GrGLSLProgramBuilder::kFragme
nt_Visibility, |
| 142 GrGLProgramBuilder::kFragment_Visibility, | 143 kFloat_GrSLType, kDefault_GrS
LPrecision, |
| 143 kFloat_GrSLType, kDefault_GrSLPrecision, | 144 "inner_threshold"); |
| 144 "inner_threshold"); | 145 fOuterThresholdVar = args.fBuilder->addUniform(GrGLSLProgramBuilder::kFragme
nt_Visibility, |
| 145 fOuterThresholdVar = args.fBuilder->addUniform( | 146 kFloat_GrSLType, kDefault_GrS
LPrecision, |
| 146 GrGLProgramBuilder::kFragment_Visibility, | 147 "outer_threshold"); |
| 147 kFloat_GrSLType, kDefault_GrSLPrecision, | |
| 148 "outer_threshold"); | |
| 149 | 148 |
| 150 GrGLFragmentBuilder* fsBuilder = args.fBuilder->getFragmentShaderBuilder(); | 149 GrGLSLFragmentBuilder* fsBuilder = args.fBuilder->getFragmentShaderBuilder()
; |
| 151 SkString coords2D = fsBuilder->ensureFSCoords2D(args.fCoords, 0); | 150 SkString coords2D = fsBuilder->ensureFSCoords2D(args.fCoords, 0); |
| 152 SkString maskCoords2D = fsBuilder->ensureFSCoords2D(args.fCoords, 1); | 151 SkString maskCoords2D = fsBuilder->ensureFSCoords2D(args.fCoords, 1); |
| 153 | 152 |
| 154 fsBuilder->codeAppendf("\t\tvec2 coord = %s;\n", coords2D.c_str()); | 153 fsBuilder->codeAppendf("\t\tvec2 coord = %s;\n", coords2D.c_str()); |
| 155 fsBuilder->codeAppendf("\t\tvec2 mask_coord = %s;\n", maskCoords2D.c_str()); | 154 fsBuilder->codeAppendf("\t\tvec2 mask_coord = %s;\n", maskCoords2D.c_str()); |
| 156 fsBuilder->codeAppend("\t\tvec4 input_color = "); | 155 fsBuilder->codeAppend("\t\tvec4 input_color = "); |
| 157 fsBuilder->appendTextureLookup(args.fSamplers[0], "coord"); | 156 fsBuilder->appendTextureLookup(args.fSamplers[0], "coord"); |
| 158 fsBuilder->codeAppend(";\n"); | 157 fsBuilder->codeAppend(";\n"); |
| 159 fsBuilder->codeAppend("\t\tvec4 mask_color = "); | 158 fsBuilder->codeAppend("\t\tvec4 mask_color = "); |
| 160 fsBuilder->appendTextureLookup(args.fSamplers[1], "mask_coord"); | 159 fsBuilder->appendTextureLookup(args.fSamplers[1], "mask_coord"); |
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| 198 GrTexture* bmpTex = d->fTextures[GrProcessorUnitTest::kSkiaPMTextureIdx]; | 197 GrTexture* bmpTex = d->fTextures[GrProcessorUnitTest::kSkiaPMTextureIdx]; |
| 199 GrTexture* maskTex = d->fTextures[GrProcessorUnitTest::kAlphaTextureIdx]; | 198 GrTexture* maskTex = d->fTextures[GrProcessorUnitTest::kAlphaTextureIdx]; |
| 200 float innerThresh = d->fRandom->nextUScalar1(); | 199 float innerThresh = d->fRandom->nextUScalar1(); |
| 201 float outerThresh = d->fRandom->nextUScalar1(); | 200 float outerThresh = d->fRandom->nextUScalar1(); |
| 202 return AlphaThresholdEffect::Create(bmpTex, maskTex, innerThresh, outerThres
h); | 201 return AlphaThresholdEffect::Create(bmpTex, maskTex, innerThresh, outerThres
h); |
| 203 } | 202 } |
| 204 | 203 |
| 205 /////////////////////////////////////////////////////////////////////////////// | 204 /////////////////////////////////////////////////////////////////////////////// |
| 206 | 205 |
| 207 void AlphaThresholdEffect::onGetGLProcessorKey(const GrGLSLCaps& caps, | 206 void AlphaThresholdEffect::onGetGLProcessorKey(const GrGLSLCaps& caps, |
| 208 GrProcessorKeyBuilder* b) const { | 207 GrProcessorKeyBuilder* b) const { |
| 209 GrGLAlphaThresholdEffect::GenKey(*this, caps, b); | 208 GrGLAlphaThresholdEffect::GenKey(*this, caps, b); |
| 210 } | 209 } |
| 211 | 210 |
| 212 GrGLFragmentProcessor* AlphaThresholdEffect::onCreateGLInstance() const { | 211 GrGLFragmentProcessor* AlphaThresholdEffect::onCreateGLInstance() const { |
| 213 return new GrGLAlphaThresholdEffect(*this); | 212 return new GrGLAlphaThresholdEffect(*this); |
| 214 } | 213 } |
| 215 | 214 |
| 216 bool AlphaThresholdEffect::onIsEqual(const GrFragmentProcessor& sBase) const { | 215 bool AlphaThresholdEffect::onIsEqual(const GrFragmentProcessor& sBase) const { |
| 217 const AlphaThresholdEffect& s = sBase.cast<AlphaThresholdEffect>(); | 216 const AlphaThresholdEffect& s = sBase.cast<AlphaThresholdEffect>(); |
| 218 return (this->fInnerThreshold == s.fInnerThreshold && | 217 return (this->fInnerThreshold == s.fInnerThreshold && |
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| 371 } | 370 } |
| 372 | 371 |
| 373 #ifndef SK_IGNORE_TO_STRING | 372 #ifndef SK_IGNORE_TO_STRING |
| 374 void SkAlphaThresholdFilterImpl::toString(SkString* str) const { | 373 void SkAlphaThresholdFilterImpl::toString(SkString* str) const { |
| 375 str->appendf("SkAlphaThresholdImageFilter: ("); | 374 str->appendf("SkAlphaThresholdImageFilter: ("); |
| 376 str->appendf("inner: %f outer: %f", fInnerThreshold, fOuterThreshold); | 375 str->appendf("inner: %f outer: %f", fInnerThreshold, fOuterThreshold); |
| 377 str->append(")"); | 376 str->append(")"); |
| 378 } | 377 } |
| 379 #endif | 378 #endif |
| 380 | 379 |
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