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| 1 /* | 1 /* |
| 2 * Copyright 2013 Google Inc. | 2 * Copyright 2013 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 #ifndef GrBicubicTextureEffect_DEFINED | 8 #ifndef GrBicubicTextureEffect_DEFINED |
| 9 #define GrBicubicTextureEffect_DEFINED | 9 #define GrBicubicTextureEffect_DEFINED |
| 10 | 10 |
| (...skipping 14 matching lines...) Expand all Loading... |
| 25 | 25 |
| 26 const float* coefficients() const { return fCoefficients; } | 26 const float* coefficients() const { return fCoefficients; } |
| 27 | 27 |
| 28 const char* name() const override { return "Bicubic"; } | 28 const char* name() const override { return "Bicubic"; } |
| 29 | 29 |
| 30 const GrTextureDomain& domain() const { return fDomain; } | 30 const GrTextureDomain& domain() const { return fDomain; } |
| 31 | 31 |
| 32 /** | 32 /** |
| 33 * Create a simple filter effect with custom bicubic coefficients and option
al domain. | 33 * Create a simple filter effect with custom bicubic coefficients and option
al domain. |
| 34 */ | 34 */ |
| 35 static GrFragmentProcessor* Create(GrProcessorDataManager* procDataManager,
GrTexture* tex, | 35 static GrFragmentProcessor* Create(GrTexture* tex, const SkScalar coefficien
ts[16], |
| 36 const SkScalar coefficients[16], | |
| 37 const SkRect* domain = nullptr) { | 36 const SkRect* domain = nullptr) { |
| 38 if (nullptr == domain) { | 37 if (nullptr == domain) { |
| 39 static const SkShader::TileMode kTileModes[] = { SkShader::kClamp_Ti
leMode, | 38 static const SkShader::TileMode kTileModes[] = { SkShader::kClamp_Ti
leMode, |
| 40 SkShader::kClamp_Ti
leMode }; | 39 SkShader::kClamp_Ti
leMode }; |
| 41 return Create(procDataManager, tex, coefficients, | 40 return Create(tex, coefficients, GrCoordTransform::MakeDivByTextureW
HMatrix(tex), |
| 42 GrCoordTransform::MakeDivByTextureWHMatrix(tex), kTile
Modes); | 41 kTileModes); |
| 43 } else { | 42 } else { |
| 44 return new GrBicubicEffect(procDataManager, tex, coefficients, | 43 return new GrBicubicEffect(tex, coefficients, |
| 45 GrCoordTransform::MakeDivByTextureWHMatri
x(tex), *domain); | 44 GrCoordTransform::MakeDivByTextureWHMatri
x(tex), *domain); |
| 46 } | 45 } |
| 47 } | 46 } |
| 48 | 47 |
| 49 /** | 48 /** |
| 50 * Create a Mitchell filter effect with specified texture matrix and x/y til
e modes. | 49 * Create a Mitchell filter effect with specified texture matrix and x/y til
e modes. |
| 51 */ | 50 */ |
| 52 static GrFragmentProcessor* Create(GrProcessorDataManager* procDataManager,
GrTexture* tex, | 51 static GrFragmentProcessor* Create(GrTexture* tex, const SkMatrix& matrix, |
| 53 const SkMatrix& matrix, | |
| 54 SkShader::TileMode tileModes[2]) { | 52 SkShader::TileMode tileModes[2]) { |
| 55 return Create(procDataManager, tex, gMitchellCoefficients, matrix, tileM
odes); | 53 return Create(tex, gMitchellCoefficients, matrix, tileModes); |
| 56 } | 54 } |
| 57 | 55 |
| 58 /** | 56 /** |
| 59 * Create a filter effect with custom bicubic coefficients, the texture matr
ix, and the x/y | 57 * Create a filter effect with custom bicubic coefficients, the texture matr
ix, and the x/y |
| 60 * tilemodes. | 58 * tilemodes. |
| 61 */ | 59 */ |
| 62 static GrFragmentProcessor* Create(GrProcessorDataManager* procDataManager,
GrTexture* tex, | 60 static GrFragmentProcessor* Create(GrTexture* tex, const SkScalar coefficien
ts[16], |
| 63 const SkScalar coefficients[16], const Sk
Matrix& matrix, | 61 const SkMatrix& matrix, |
| 64 const SkShader::TileMode tileModes[2]) { | 62 const SkShader::TileMode tileModes[2]) { |
| 65 return new GrBicubicEffect(procDataManager, tex, coefficients, matrix, t
ileModes); | 63 return new GrBicubicEffect(tex, coefficients, matrix, tileModes); |
| 66 } | 64 } |
| 67 | 65 |
| 68 /** | 66 /** |
| 69 * Create a Mitchell filter effect with a texture matrix and a domain. | 67 * Create a Mitchell filter effect with a texture matrix and a domain. |
| 70 */ | 68 */ |
| 71 static GrFragmentProcessor* Create(GrProcessorDataManager* procDataManager,
GrTexture* tex, | 69 static GrFragmentProcessor* Create(GrTexture* tex, const SkMatrix& matrix, |
| 72 const SkMatrix& matrix, const SkRect& dom
ain) { | 70 const SkRect& domain) { |
| 73 return new GrBicubicEffect(procDataManager, tex, gMitchellCoefficients,
matrix, domain); | 71 return new GrBicubicEffect(tex, gMitchellCoefficients, matrix, domain); |
| 74 } | 72 } |
| 75 | 73 |
| 76 /** | 74 /** |
| 77 * Determines whether the bicubic effect should be used based on the transfo
rmation from the | 75 * Determines whether the bicubic effect should be used based on the transfo
rmation from the |
| 78 * local coords to the device. Returns true if the bicubic effect should be
used. filterMode | 76 * local coords to the device. Returns true if the bicubic effect should be
used. filterMode |
| 79 * is set to appropriate filtering mode to use regardless of the return resu
lt (e.g. when this | 77 * is set to appropriate filtering mode to use regardless of the return resu
lt (e.g. when this |
| 80 * returns false it may indicate that the best fallback is to use kMipMap, k
Bilerp, or | 78 * returns false it may indicate that the best fallback is to use kMipMap, k
Bilerp, or |
| 81 * kNearest). | 79 * kNearest). |
| 82 */ | 80 */ |
| 83 static bool ShouldUseBicubic(const SkMatrix& localCoordsToDevice, | 81 static bool ShouldUseBicubic(const SkMatrix& localCoordsToDevice, |
| 84 GrTextureParams::FilterMode* filterMode); | 82 GrTextureParams::FilterMode* filterMode); |
| 85 | 83 |
| 86 private: | 84 private: |
| 87 GrBicubicEffect(GrProcessorDataManager*, GrTexture*, const SkScalar coeffici
ents[16], | 85 GrBicubicEffect(GrTexture*, const SkScalar coefficients[16], const SkMatrix
&matrix, |
| 88 const SkMatrix &matrix, const SkShader::TileMode tileModes[2
]); | 86 const SkShader::TileMode tileModes[2]); |
| 89 GrBicubicEffect(GrProcessorDataManager*, GrTexture*, const SkScalar coeffici
ents[16], | 87 GrBicubicEffect(GrTexture*, const SkScalar coefficients[16], const SkMatrix
&matrix, |
| 90 const SkMatrix &matrix, const SkRect& domain); | 88 const SkRect& domain); |
| 91 | 89 |
| 92 GrGLFragmentProcessor* onCreateGLInstance() const override; | 90 GrGLFragmentProcessor* onCreateGLInstance() const override; |
| 93 | 91 |
| 94 void onGetGLProcessorKey(const GrGLSLCaps&, GrProcessorKeyBuilder*) const ov
erride; | 92 void onGetGLProcessorKey(const GrGLSLCaps&, GrProcessorKeyBuilder*) const ov
erride; |
| 95 | 93 |
| 96 bool onIsEqual(const GrFragmentProcessor&) const override; | 94 bool onIsEqual(const GrFragmentProcessor&) const override; |
| 97 | 95 |
| 98 void onComputeInvariantOutput(GrInvariantOutput* inout) const override; | 96 void onComputeInvariantOutput(GrInvariantOutput* inout) const override; |
| 99 | 97 |
| 100 float fCoefficients[16]; | 98 float fCoefficients[16]; |
| 101 GrTextureDomain fDomain; | 99 GrTextureDomain fDomain; |
| 102 | 100 |
| 103 GR_DECLARE_FRAGMENT_PROCESSOR_TEST; | 101 GR_DECLARE_FRAGMENT_PROCESSOR_TEST; |
| 104 | 102 |
| 105 static const SkScalar gMitchellCoefficients[16]; | 103 static const SkScalar gMitchellCoefficients[16]; |
| 106 | 104 |
| 107 typedef GrSingleTextureEffect INHERITED; | 105 typedef GrSingleTextureEffect INHERITED; |
| 108 }; | 106 }; |
| 109 | 107 |
| 110 #endif | 108 #endif |
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