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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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