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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 "gl/builders/GrGLProgramBuilder.h" | 10 #include "gl/builders/GrGLProgramBuilder.h" |
| 11 #include "glsl/GrGLSLProgramDataManager.h" |
11 | 12 |
12 #define DS(x) SkDoubleToScalar(x) | 13 #define DS(x) SkDoubleToScalar(x) |
13 | 14 |
14 const SkScalar GrBicubicEffect::gMitchellCoefficients[16] = { | 15 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), | 16 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), | 17 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), | 18 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), | 19 DS( 0.0 / 18.0), DS( 0.0 / 18.0), DS( -6.0 / 18.0), DS( 7.0 / 18.0), |
19 }; | 20 }; |
20 | 21 |
21 | 22 |
22 class GrGLBicubicEffect : public GrGLFragmentProcessor { | 23 class GrGLBicubicEffect : public GrGLFragmentProcessor { |
23 public: | 24 public: |
24 GrGLBicubicEffect(const GrProcessor&); | 25 GrGLBicubicEffect(const GrProcessor&); |
25 | 26 |
26 virtual void emitCode(EmitArgs&) override; | 27 virtual void emitCode(EmitArgs&) override; |
27 | 28 |
28 static inline void GenKey(const GrProcessor& effect, const GrGLSLCaps&, | 29 static inline void GenKey(const GrProcessor& effect, const GrGLSLCaps&, |
29 GrProcessorKeyBuilder* b) { | 30 GrProcessorKeyBuilder* b) { |
30 const GrTextureDomain& domain = effect.cast<GrBicubicEffect>().domain(); | 31 const GrTextureDomain& domain = effect.cast<GrBicubicEffect>().domain(); |
31 b->add32(GrTextureDomain::GLDomain::DomainKey(domain)); | 32 b->add32(GrTextureDomain::GLDomain::DomainKey(domain)); |
32 } | 33 } |
33 | 34 |
34 protected: | 35 protected: |
35 void onSetData(const GrGLProgramDataManager&, const GrProcessor&) override; | 36 void onSetData(const GrGLSLProgramDataManager&, const GrProcessor&) override
; |
36 | 37 |
37 private: | 38 private: |
38 typedef GrGLProgramDataManager::UniformHandle UniformHandle; | 39 typedef GrGLSLProgramDataManager::UniformHandle UniformHandle; |
39 | 40 |
40 UniformHandle fCoefficientsUni; | 41 UniformHandle fCoefficientsUni; |
41 UniformHandle fImageIncrementUni; | 42 UniformHandle fImageIncrementUni; |
42 GrTextureDomain::GLDomain fDomain; | 43 GrTextureDomain::GLDomain fDomain; |
43 | 44 |
44 typedef GrGLFragmentProcessor INHERITED; | 45 typedef GrGLFragmentProcessor INHERITED; |
45 }; | 46 }; |
46 | 47 |
47 GrGLBicubicEffect::GrGLBicubicEffect(const GrProcessor&) { | 48 GrGLBicubicEffect::GrGLBicubicEffect(const GrProcessor&) { |
48 } | 49 } |
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98 fDomain.sampleTexture(fsBuilder, domain, sampleVar.c_str(), coord, a
rgs.fSamplers[0]); | 99 fDomain.sampleTexture(fsBuilder, domain, sampleVar.c_str(), coord, a
rgs.fSamplers[0]); |
99 } | 100 } |
100 fsBuilder->codeAppendf("\tvec4 s%d = %s(%s, f.x, rowColors[0], rowColors
[1], rowColors[2], rowColors[3]);\n", y, cubicBlendName.c_str(), coeff); | 101 fsBuilder->codeAppendf("\tvec4 s%d = %s(%s, f.x, rowColors[0], rowColors
[1], rowColors[2], rowColors[3]);\n", y, cubicBlendName.c_str(), coeff); |
101 } | 102 } |
102 SkString bicubicColor; | 103 SkString bicubicColor; |
103 bicubicColor.printf("%s(%s, f.y, s0, s1, s2, s3)", cubicBlendName.c_str(), c
oeff); | 104 bicubicColor.printf("%s(%s, f.y, s0, s1, s2, s3)", cubicBlendName.c_str(), c
oeff); |
104 fsBuilder->codeAppendf("\t%s = %s;\n", args.fOutputColor,(GrGLSLExpr4(bicubi
cColor.c_str()) * | 105 fsBuilder->codeAppendf("\t%s = %s;\n", args.fOutputColor,(GrGLSLExpr4(bicubi
cColor.c_str()) * |
105 GrGLSLExpr4(args.fInputColor)).c_str()); | 106 GrGLSLExpr4(args.fInputColor)).c_str()); |
106 } | 107 } |
107 | 108 |
108 void GrGLBicubicEffect::onSetData(const GrGLProgramDataManager& pdman, | 109 void GrGLBicubicEffect::onSetData(const GrGLSLProgramDataManager& pdman, |
109 const GrProcessor& processor) { | 110 const GrProcessor& processor) { |
110 const GrBicubicEffect& bicubicEffect = processor.cast<GrBicubicEffect>(); | 111 const GrBicubicEffect& bicubicEffect = processor.cast<GrBicubicEffect>(); |
111 const GrTexture& texture = *processor.texture(0); | 112 const GrTexture& texture = *processor.texture(0); |
112 float imageIncrement[2]; | 113 float imageIncrement[2]; |
113 imageIncrement[0] = 1.0f / texture.width(); | 114 imageIncrement[0] = 1.0f / texture.width(); |
114 imageIncrement[1] = 1.0f / texture.height(); | 115 imageIncrement[1] = 1.0f / texture.height(); |
115 pdman.set2fv(fImageIncrementUni, 1, imageIncrement); | 116 pdman.set2fv(fImageIncrementUni, 1, imageIncrement); |
116 pdman.setMatrix4f(fCoefficientsUni, bicubicEffect.coefficients()); | 117 pdman.setMatrix4f(fCoefficientsUni, bicubicEffect.coefficients()); |
117 fDomain.setData(pdman, bicubicEffect.domain(), texture.origin()); | 118 fDomain.setData(pdman, bicubicEffect.domain(), texture.origin()); |
118 } | 119 } |
119 | 120 |
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207 // Use bilerp to handle rotation or fractional translation. | 208 // Use bilerp to handle rotation or fractional translation. |
208 *filterMode = GrTextureParams::kBilerp_FilterMode; | 209 *filterMode = GrTextureParams::kBilerp_FilterMode; |
209 } | 210 } |
210 return false; | 211 return false; |
211 } | 212 } |
212 // When we use the bicubic filtering effect each sample is read from the tex
ture using | 213 // When we use the bicubic filtering effect each sample is read from the tex
ture using |
213 // nearest neighbor sampling. | 214 // nearest neighbor sampling. |
214 *filterMode = GrTextureParams::kNone_FilterMode; | 215 *filterMode = GrTextureParams::kNone_FilterMode; |
215 return true; | 216 return true; |
216 } | 217 } |
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