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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" | 8 #include "gl/builders/GrGLProgramBuilder.h" |
| 9 #include "GrBicubicEffect.h" | 9 #include "GrBicubicEffect.h" |
| 10 #include "GrInvariantOutput.h" | 10 #include "GrInvariantOutput.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 GrBackendProcessorFactory& factory, |
| 25 const GrProcessor&); | 25 const GrProcessor&); |
| 26 | 26 |
| 27 virtual void emitCode(GrGLFPBuilder*, | 27 virtual void emitCode(GrGLFPBuilder*, |
| 28 const GrFragmentProcessor&, | 28 const GrFragmentProcessor&, |
| 29 const GrProcessorKey&, | |
| 30 const char* outputColor, | 29 const char* outputColor, |
| 31 const char* inputColor, | 30 const char* inputColor, |
| 32 const TransformedCoordsArray&, | 31 const TransformedCoordsArray&, |
| 33 const TextureSamplerArray&) SK_OVERRIDE; | 32 const TextureSamplerArray&) SK_OVERRIDE; |
| 34 | 33 |
| 35 virtual void setData(const GrGLProgramDataManager&, const GrProcessor&) SK_O
VERRIDE; | 34 virtual void setData(const GrGLProgramDataManager&, const GrProcessor&) SK_O
VERRIDE; |
| 36 | 35 |
| 37 static inline void GenKey(const GrProcessor& effect, const GrGLCaps&, | 36 static inline void GenKey(const GrProcessor& effect, const GrGLCaps&, |
| 38 GrProcessorKeyBuilder* b) { | 37 GrProcessorKeyBuilder* b) { |
| 39 const GrTextureDomain& domain = effect.cast<GrBicubicEffect>().domain(); | 38 const GrTextureDomain& domain = effect.cast<GrBicubicEffect>().domain(); |
| 40 b->add32(GrTextureDomain::GLDomain::DomainKey(domain)); | 39 b->add32(GrTextureDomain::GLDomain::DomainKey(domain)); |
| 41 } | 40 } |
| 42 | 41 |
| 43 private: | 42 private: |
| 44 typedef GrGLProgramDataManager::UniformHandle UniformHandle; | 43 typedef GrGLProgramDataManager::UniformHandle UniformHandle; |
| 45 | 44 |
| 46 UniformHandle fCoefficientsUni; | 45 UniformHandle fCoefficientsUni; |
| 47 UniformHandle fImageIncrementUni; | 46 UniformHandle fImageIncrementUni; |
| 48 GrTextureDomain::GLDomain fDomain; | 47 GrTextureDomain::GLDomain fDomain; |
| 49 | 48 |
| 50 typedef GrGLFragmentProcessor INHERITED; | 49 typedef GrGLFragmentProcessor INHERITED; |
| 51 }; | 50 }; |
| 52 | 51 |
| 53 GrGLBicubicEffect::GrGLBicubicEffect(const GrBackendProcessorFactory& factory, c
onst GrProcessor&) | 52 GrGLBicubicEffect::GrGLBicubicEffect(const GrBackendProcessorFactory& factory, c
onst GrProcessor&) |
| 54 : INHERITED(factory) { | 53 : INHERITED(factory) { |
| 55 } | 54 } |
| 56 | 55 |
| 57 void GrGLBicubicEffect::emitCode(GrGLFPBuilder* builder, | 56 void GrGLBicubicEffect::emitCode(GrGLFPBuilder* builder, |
| 58 const GrFragmentProcessor& effect, | 57 const GrFragmentProcessor& effect, |
| 59 const GrProcessorKey& key, | |
| 60 const char* outputColor, | 58 const char* outputColor, |
| 61 const char* inputColor, | 59 const char* inputColor, |
| 62 const TransformedCoordsArray& coords, | 60 const TransformedCoordsArray& coords, |
| 63 const TextureSamplerArray& samplers) { | 61 const TextureSamplerArray& samplers) { |
| 64 const GrTextureDomain& domain = effect.cast<GrBicubicEffect>().domain(); | 62 const GrTextureDomain& domain = effect.cast<GrBicubicEffect>().domain(); |
| 65 | 63 |
| 66 fCoefficientsUni = builder->addUniform(GrGLProgramBuilder::kFragment_Visibil
ity, | 64 fCoefficientsUni = builder->addUniform(GrGLProgramBuilder::kFragment_Visibil
ity, |
| 67 kMat44f_GrSLType, "Coefficients"); | 65 kMat44f_GrSLType, "Coefficients"); |
| 68 fImageIncrementUni = builder->addUniform(GrGLProgramBuilder::kFragment_Visib
ility, | 66 fImageIncrementUni = builder->addUniform(GrGLProgramBuilder::kFragment_Visib
ility, |
| 69 kVec2f_GrSLType, "ImageIncrement"); | 67 kVec2f_GrSLType, "ImageIncrement"); |
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| 213 // Use bilerp to handle rotation or fractional translation. | 211 // Use bilerp to handle rotation or fractional translation. |
| 214 *filterMode = GrTextureParams::kBilerp_FilterMode; | 212 *filterMode = GrTextureParams::kBilerp_FilterMode; |
| 215 } | 213 } |
| 216 return false; | 214 return false; |
| 217 } | 215 } |
| 218 // When we use the bicubic filtering effect each sample is read from the tex
ture using | 216 // When we use the bicubic filtering effect each sample is read from the tex
ture using |
| 219 // nearest neighbor sampling. | 217 // nearest neighbor sampling. |
| 220 *filterMode = GrTextureParams::kNone_FilterMode; | 218 *filterMode = GrTextureParams::kNone_FilterMode; |
| 221 return true; | 219 return true; |
| 222 } | 220 } |
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