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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 "gl/builders/GrGLProgramBuilder.h" | |
| 9 #include "GrBicubicEffect.h" | 8 #include "GrBicubicEffect.h" |
| 10 #include "GrInvariantOutput.h" | 9 #include "GrInvariantOutput.h" |
| 10 #include "gl/builders/GrGLProgramBuilder.h" |
| 11 | 11 |
| 12 #define DS(x) SkDoubleToScalar(x) | 12 #define DS(x) SkDoubleToScalar(x) |
| 13 | 13 |
| 14 const SkScalar GrBicubicEffect::gMitchellCoefficients[16] = { | 14 const SkScalar GrBicubicEffect::gMitchellCoefficients[16] = { |
| 15 DS( 1.0 / 18.0), DS(-9.0 / 18.0), DS( 15.0 / 18.0), DS( -7.0 / 18.0), | 15 DS( 1.0 / 18.0), DS(-9.0 / 18.0), DS( 15.0 / 18.0), DS( -7.0 / 18.0), |
| 16 DS(16.0 / 18.0), DS( 0.0 / 18.0), DS(-36.0 / 18.0), DS( 21.0 / 18.0), | 16 DS(16.0 / 18.0), DS( 0.0 / 18.0), DS(-36.0 / 18.0), DS( 21.0 / 18.0), |
| 17 DS( 1.0 / 18.0), DS( 9.0 / 18.0), DS( 27.0 / 18.0), DS(-21.0 / 18.0), | 17 DS( 1.0 / 18.0), DS( 9.0 / 18.0), DS( 27.0 / 18.0), DS(-21.0 / 18.0), |
| 18 DS( 0.0 / 18.0), DS( 0.0 / 18.0), DS( -6.0 / 18.0), DS( 7.0 / 18.0), | 18 DS( 0.0 / 18.0), DS( 0.0 / 18.0), DS( -6.0 / 18.0), DS( 7.0 / 18.0), |
| 19 }; | 19 }; |
| 20 | 20 |
| 21 | 21 |
| 22 class GrGLBicubicEffect : public GrGLFragmentProcessor { | 22 class GrGLBicubicEffect : public GrGLFragmentProcessor { |
| 23 public: | 23 public: |
| 24 GrGLBicubicEffect(const GrBackendProcessorFactory& factory, | 24 GrGLBicubicEffect(const GrProcessor&); |
| 25 const GrProcessor&); | |
| 26 | 25 |
| 27 virtual void emitCode(GrGLFPBuilder*, | 26 virtual void emitCode(GrGLFPBuilder*, |
| 28 const GrFragmentProcessor&, | 27 const GrFragmentProcessor&, |
| 29 const char* outputColor, | 28 const char* outputColor, |
| 30 const char* inputColor, | 29 const char* inputColor, |
| 31 const TransformedCoordsArray&, | 30 const TransformedCoordsArray&, |
| 32 const TextureSamplerArray&) SK_OVERRIDE; | 31 const TextureSamplerArray&) SK_OVERRIDE; |
| 33 | 32 |
| 34 virtual void setData(const GrGLProgramDataManager&, const GrProcessor&) SK_O
VERRIDE; | 33 virtual void setData(const GrGLProgramDataManager&, const GrProcessor&) SK_O
VERRIDE; |
| 35 | 34 |
| 36 static inline void GenKey(const GrProcessor& effect, const GrGLCaps&, | 35 static inline void GenKey(const GrProcessor& effect, const GrGLCaps&, |
| 37 GrProcessorKeyBuilder* b) { | 36 GrProcessorKeyBuilder* b) { |
| 38 const GrTextureDomain& domain = effect.cast<GrBicubicEffect>().domain(); | 37 const GrTextureDomain& domain = effect.cast<GrBicubicEffect>().domain(); |
| 39 b->add32(GrTextureDomain::GLDomain::DomainKey(domain)); | 38 b->add32(GrTextureDomain::GLDomain::DomainKey(domain)); |
| 40 } | 39 } |
| 41 | 40 |
| 42 private: | 41 private: |
| 43 typedef GrGLProgramDataManager::UniformHandle UniformHandle; | 42 typedef GrGLProgramDataManager::UniformHandle UniformHandle; |
| 44 | 43 |
| 45 UniformHandle fCoefficientsUni; | 44 UniformHandle fCoefficientsUni; |
| 46 UniformHandle fImageIncrementUni; | 45 UniformHandle fImageIncrementUni; |
| 47 GrTextureDomain::GLDomain fDomain; | 46 GrTextureDomain::GLDomain fDomain; |
| 48 | 47 |
| 49 typedef GrGLFragmentProcessor INHERITED; | 48 typedef GrGLFragmentProcessor INHERITED; |
| 50 }; | 49 }; |
| 51 | 50 |
| 52 GrGLBicubicEffect::GrGLBicubicEffect(const GrBackendProcessorFactory& factory, c
onst GrProcessor&) | 51 GrGLBicubicEffect::GrGLBicubicEffect(const GrProcessor&) { |
| 53 : INHERITED(factory) { | |
| 54 } | 52 } |
| 55 | 53 |
| 56 void GrGLBicubicEffect::emitCode(GrGLFPBuilder* builder, | 54 void GrGLBicubicEffect::emitCode(GrGLFPBuilder* builder, |
| 57 const GrFragmentProcessor& effect, | 55 const GrFragmentProcessor& effect, |
| 58 const char* outputColor, | 56 const char* outputColor, |
| 59 const char* inputColor, | 57 const char* inputColor, |
| 60 const TransformedCoordsArray& coords, | 58 const TransformedCoordsArray& coords, |
| 61 const TextureSamplerArray& samplers) { | 59 const TextureSamplerArray& samplers) { |
| 62 const GrTextureDomain& domain = effect.cast<GrBicubicEffect>().domain(); | 60 const GrTextureDomain& domain = effect.cast<GrBicubicEffect>().domain(); |
| 63 | 61 |
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| 149 const SkRect& domain) | 147 const SkRect& domain) |
| 150 : INHERITED(texture, matrix, GrTextureParams(SkShader::kClamp_TileMode, | 148 : INHERITED(texture, matrix, GrTextureParams(SkShader::kClamp_TileMode, |
| 151 GrTextureParams::kNone_FilterMode
)) | 149 GrTextureParams::kNone_FilterMode
)) |
| 152 , fDomain(domain, GrTextureDomain::kClamp_Mode) { | 150 , fDomain(domain, GrTextureDomain::kClamp_Mode) { |
| 153 convert_row_major_scalar_coeffs_to_column_major_floats(fCoefficients, coeffi
cients); | 151 convert_row_major_scalar_coeffs_to_column_major_floats(fCoefficients, coeffi
cients); |
| 154 } | 152 } |
| 155 | 153 |
| 156 GrBicubicEffect::~GrBicubicEffect() { | 154 GrBicubicEffect::~GrBicubicEffect() { |
| 157 } | 155 } |
| 158 | 156 |
| 159 const GrBackendFragmentProcessorFactory& GrBicubicEffect::getFactory() const { | 157 void GrBicubicEffect::getGLProcessorKey(const GrGLCaps& caps, |
| 160 return GrTBackendFragmentProcessorFactory<GrBicubicEffect>::getInstance(); | 158 GrProcessorKeyBuilder* b) const { |
| 159 GrGLBicubicEffect::GenKey(*this, caps, b); |
| 160 } |
| 161 |
| 162 GrGLFragmentProcessor* GrBicubicEffect::createGLInstance() const { |
| 163 return SkNEW_ARGS(GrGLBicubicEffect, (*this)); |
| 161 } | 164 } |
| 162 | 165 |
| 163 bool GrBicubicEffect::onIsEqual(const GrFragmentProcessor& sBase) const { | 166 bool GrBicubicEffect::onIsEqual(const GrFragmentProcessor& sBase) const { |
| 164 const GrBicubicEffect& s = sBase.cast<GrBicubicEffect>(); | 167 const GrBicubicEffect& s = sBase.cast<GrBicubicEffect>(); |
| 165 return !memcmp(fCoefficients, s.coefficients(), 16) && | 168 return !memcmp(fCoefficients, s.coefficients(), 16) && |
| 166 fDomain == s.fDomain; | 169 fDomain == s.fDomain; |
| 167 } | 170 } |
| 168 | 171 |
| 169 void GrBicubicEffect::onComputeInvariantOutput(GrInvariantOutput* inout) const { | 172 void GrBicubicEffect::onComputeInvariantOutput(GrInvariantOutput* inout) const { |
| 170 // FIXME: Perhaps we can do better. | 173 // FIXME: Perhaps we can do better. |
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| 211 // Use bilerp to handle rotation or fractional translation. | 214 // Use bilerp to handle rotation or fractional translation. |
| 212 *filterMode = GrTextureParams::kBilerp_FilterMode; | 215 *filterMode = GrTextureParams::kBilerp_FilterMode; |
| 213 } | 216 } |
| 214 return false; | 217 return false; |
| 215 } | 218 } |
| 216 // 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 |
| 217 // nearest neighbor sampling. | 220 // nearest neighbor sampling. |
| 218 *filterMode = GrTextureParams::kNone_FilterMode; | 221 *filterMode = GrTextureParams::kNone_FilterMode; |
| 219 return true; | 222 return true; |
| 220 } | 223 } |
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