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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 #include "GrBicubicEffect.h" | 8 #include "GrBicubicEffect.h" |
| 9 #include "GrInvariantOutput.h" | 9 #include "GrInvariantOutput.h" |
| 10 #include "glsl/GrGLSLFragmentShaderBuilder.h" | 10 #include "glsl/GrGLSLFragmentShaderBuilder.h" |
| 11 #include "glsl/GrGLSLProgramDataManager.h" | 11 #include "glsl/GrGLSLProgramDataManager.h" |
| 12 #include "glsl/GrGLSLUniformHandler.h" | 12 #include "glsl/GrGLSLUniformHandler.h" |
| 13 | 13 |
| 14 #define DS(x) SkDoubleToScalar(x) | 14 #define DS(x) SkDoubleToScalar(x) |
| 15 | 15 |
| 16 const SkScalar GrBicubicEffect::gMitchellCoefficients[16] = { | 16 const SkScalar GrBicubicEffect::gMitchellCoefficients[16] = { |
| 17 DS( 1.0 / 18.0), DS(-9.0 / 18.0), DS( 15.0 / 18.0), DS( -7.0 / 18.0), | 17 DS( 1.0 / 18.0), DS(-9.0 / 18.0), DS( 15.0 / 18.0), DS( -7.0 / 18.0), |
| 18 DS(16.0 / 18.0), DS( 0.0 / 18.0), DS(-36.0 / 18.0), DS( 21.0 / 18.0), | 18 DS(16.0 / 18.0), DS( 0.0 / 18.0), DS(-36.0 / 18.0), DS( 21.0 / 18.0), |
| 19 DS( 1.0 / 18.0), DS( 9.0 / 18.0), DS( 27.0 / 18.0), DS(-21.0 / 18.0), | 19 DS( 1.0 / 18.0), DS( 9.0 / 18.0), DS( 27.0 / 18.0), DS(-21.0 / 18.0), |
| 20 DS( 0.0 / 18.0), DS( 0.0 / 18.0), DS( -6.0 / 18.0), DS( 7.0 / 18.0), | 20 DS( 0.0 / 18.0), DS( 0.0 / 18.0), DS( -6.0 / 18.0), DS( 7.0 / 18.0), |
| 21 }; | 21 }; |
| 22 | 22 |
| 23 | 23 |
| 24 class GrGLBicubicEffect : public GrGLSLFragmentProcessor { | 24 class GrGLBicubicEffect : public GrGLSLFragmentProcessor { |
| 25 public: | 25 public: |
| 26 GrGLBicubicEffect(const GrProcessor&); | 26 void emitCode(EmitArgs&) override; |
| 27 | |
| 28 virtual void emitCode(EmitArgs&) override; | |
| 29 | 27 |
| 30 static inline void GenKey(const GrProcessor& effect, const GrGLSLCaps&, | 28 static inline void GenKey(const GrProcessor& effect, const GrGLSLCaps&, |
| 31 GrProcessorKeyBuilder* b) { | 29 GrProcessorKeyBuilder* b) { |
| 32 const GrTextureDomain& domain = effect.cast<GrBicubicEffect>().domain(); | 30 const GrTextureDomain& domain = effect.cast<GrBicubicEffect>().domain(); |
| 33 b->add32(GrTextureDomain::GLDomain::DomainKey(domain)); | 31 b->add32(GrTextureDomain::GLDomain::DomainKey(domain)); |
| 34 } | 32 } |
| 35 | 33 |
| 36 protected: | 34 protected: |
| 37 void onSetData(const GrGLSLProgramDataManager&, const GrProcessor&) override
; | 35 void onSetData(const GrGLSLProgramDataManager&, const GrProcessor&) override
; |
| 38 | 36 |
| 39 private: | 37 private: |
| 40 typedef GrGLSLProgramDataManager::UniformHandle UniformHandle; | 38 typedef GrGLSLProgramDataManager::UniformHandle UniformHandle; |
| 41 | 39 |
| 42 UniformHandle fCoefficientsUni; | 40 UniformHandle fCoefficientsUni; |
| 43 UniformHandle fImageIncrementUni; | 41 UniformHandle fImageIncrementUni; |
| 44 GrTextureDomain::GLDomain fDomain; | 42 GrTextureDomain::GLDomain fDomain; |
| 45 | 43 |
| 46 typedef GrGLSLFragmentProcessor INHERITED; | 44 typedef GrGLSLFragmentProcessor INHERITED; |
| 47 }; | 45 }; |
| 48 | 46 |
| 49 GrGLBicubicEffect::GrGLBicubicEffect(const GrProcessor&) { | |
| 50 } | |
| 51 | |
| 52 void GrGLBicubicEffect::emitCode(EmitArgs& args) { | 47 void GrGLBicubicEffect::emitCode(EmitArgs& args) { |
| 53 const GrTextureDomain& domain = args.fFp.cast<GrBicubicEffect>().domain(); | 48 const GrTextureDomain& domain = args.fFp.cast<GrBicubicEffect>().domain(); |
| 54 | 49 |
| 55 GrGLSLUniformHandler* uniformHandler = args.fUniformHandler; | 50 GrGLSLUniformHandler* uniformHandler = args.fUniformHandler; |
| 56 fCoefficientsUni = uniformHandler->addUniform(GrGLSLUniformHandler::kFragmen
t_Visibility, | 51 fCoefficientsUni = uniformHandler->addUniform(GrGLSLUniformHandler::kFragmen
t_Visibility, |
| 57 kMat44f_GrSLType, kDefault_GrS
LPrecision, | 52 kMat44f_GrSLType, kDefault_GrS
LPrecision, |
| 58 "Coefficients"); | 53 "Coefficients"); |
| 59 fImageIncrementUni = uniformHandler->addUniform(GrGLSLUniformHandler::kFragm
ent_Visibility, | 54 fImageIncrementUni = uniformHandler->addUniform(GrGLSLUniformHandler::kFragm
ent_Visibility, |
| 60 kVec2f_GrSLType, kDefault_Gr
SLPrecision, | 55 kVec2f_GrSLType, kDefault_Gr
SLPrecision, |
| 61 "ImageIncrement"); | 56 "ImageIncrement"); |
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| 161 | 156 |
| 162 GrBicubicEffect::~GrBicubicEffect() { | 157 GrBicubicEffect::~GrBicubicEffect() { |
| 163 } | 158 } |
| 164 | 159 |
| 165 void GrBicubicEffect::onGetGLSLProcessorKey(const GrGLSLCaps& caps, | 160 void GrBicubicEffect::onGetGLSLProcessorKey(const GrGLSLCaps& caps, |
| 166 GrProcessorKeyBuilder* b) const { | 161 GrProcessorKeyBuilder* b) const { |
| 167 GrGLBicubicEffect::GenKey(*this, caps, b); | 162 GrGLBicubicEffect::GenKey(*this, caps, b); |
| 168 } | 163 } |
| 169 | 164 |
| 170 GrGLSLFragmentProcessor* GrBicubicEffect::onCreateGLSLInstance() const { | 165 GrGLSLFragmentProcessor* GrBicubicEffect::onCreateGLSLInstance() const { |
| 171 return new GrGLBicubicEffect(*this); | 166 return new GrGLBicubicEffect; |
| 172 } | 167 } |
| 173 | 168 |
| 174 bool GrBicubicEffect::onIsEqual(const GrFragmentProcessor& sBase) const { | 169 bool GrBicubicEffect::onIsEqual(const GrFragmentProcessor& sBase) const { |
| 175 const GrBicubicEffect& s = sBase.cast<GrBicubicEffect>(); | 170 const GrBicubicEffect& s = sBase.cast<GrBicubicEffect>(); |
| 176 return !memcmp(fCoefficients, s.coefficients(), 16) && | 171 return !memcmp(fCoefficients, s.coefficients(), 16) && |
| 177 fDomain == s.fDomain; | 172 fDomain == s.fDomain; |
| 178 } | 173 } |
| 179 | 174 |
| 180 void GrBicubicEffect::onComputeInvariantOutput(GrInvariantOutput* inout) const { | 175 void GrBicubicEffect::onComputeInvariantOutput(GrInvariantOutput* inout) const { |
| 181 // FIXME: Perhaps we can do better. | 176 // FIXME: Perhaps we can do better. |
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| 219 // Use bilerp to handle rotation or fractional translation. | 214 // Use bilerp to handle rotation or fractional translation. |
| 220 *filterMode = GrTextureParams::kBilerp_FilterMode; | 215 *filterMode = GrTextureParams::kBilerp_FilterMode; |
| 221 } | 216 } |
| 222 return false; | 217 return false; |
| 223 } | 218 } |
| 224 // When we use the bicubic filtering effect each sample is read from the tex
ture using | 219 // When we use the bicubic filtering effect each sample is read from the tex
ture using |
| 225 // nearest neighbor sampling. | 220 // nearest neighbor sampling. |
| 226 *filterMode = GrTextureParams::kNone_FilterMode; | 221 *filterMode = GrTextureParams::kNone_FilterMode; |
| 227 return true; | 222 return true; |
| 228 } | 223 } |
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