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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 |
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| 34 */ | 34 */ |
| 35 static GrFragmentProcessor* Create(GrProcessorDataManager* procDataManager,
GrTexture* tex, | 35 static GrFragmentProcessor* Create(GrProcessorDataManager* procDataManager,
GrTexture* tex, |
| 36 const SkScalar coefficients[16], | 36 const SkScalar coefficients[16], |
| 37 const SkRect* domain = NULL) { | 37 const SkRect* domain = NULL) { |
| 38 if (NULL == domain) { | 38 if (NULL == domain) { |
| 39 static const SkShader::TileMode kTileModes[] = { SkShader::kClamp_Ti
leMode, | 39 static const SkShader::TileMode kTileModes[] = { SkShader::kClamp_Ti
leMode, |
| 40 SkShader::kClamp_Ti
leMode }; | 40 SkShader::kClamp_Ti
leMode }; |
| 41 return Create(procDataManager, tex, coefficients, | 41 return Create(procDataManager, tex, coefficients, |
| 42 GrCoordTransform::MakeDivByTextureWHMatrix(tex), kTile
Modes); | 42 GrCoordTransform::MakeDivByTextureWHMatrix(tex), kTile
Modes); |
| 43 } else { | 43 } else { |
| 44 return SkNEW_ARGS(GrBicubicEffect, (procDataManager, tex, coefficien
ts, | 44 return new GrBicubicEffect(procDataManager, tex, coefficients, |
| 45 GrCoordTransform::MakeDivByTextu
reWHMatrix(tex), | 45 GrCoordTransform::MakeDivByTextureWHMatri
x(tex), *domain); |
| 46 *domain)); | |
| 47 } | 46 } |
| 48 } | 47 } |
| 49 | 48 |
| 50 /** | 49 /** |
| 51 * Create a Mitchell filter effect with specified texture matrix and x/y til
e modes. | 50 * Create a Mitchell filter effect with specified texture matrix and x/y til
e modes. |
| 52 */ | 51 */ |
| 53 static GrFragmentProcessor* Create(GrProcessorDataManager* procDataManager,
GrTexture* tex, | 52 static GrFragmentProcessor* Create(GrProcessorDataManager* procDataManager,
GrTexture* tex, |
| 54 const SkMatrix& matrix, | 53 const SkMatrix& matrix, |
| 55 SkShader::TileMode tileModes[2]) { | 54 SkShader::TileMode tileModes[2]) { |
| 56 return Create(procDataManager, tex, gMitchellCoefficients, matrix, tileM
odes); | 55 return Create(procDataManager, tex, gMitchellCoefficients, matrix, tileM
odes); |
| 57 } | 56 } |
| 58 | 57 |
| 59 /** | 58 /** |
| 60 * Create a filter effect with custom bicubic coefficients, the texture matr
ix, and the x/y | 59 * Create a filter effect with custom bicubic coefficients, the texture matr
ix, and the x/y |
| 61 * tilemodes. | 60 * tilemodes. |
| 62 */ | 61 */ |
| 63 static GrFragmentProcessor* Create(GrProcessorDataManager* procDataManager,
GrTexture* tex, | 62 static GrFragmentProcessor* Create(GrProcessorDataManager* procDataManager,
GrTexture* tex, |
| 64 const SkScalar coefficients[16], const Sk
Matrix& matrix, | 63 const SkScalar coefficients[16], const Sk
Matrix& matrix, |
| 65 const SkShader::TileMode tileModes[2]) { | 64 const SkShader::TileMode tileModes[2]) { |
| 66 return SkNEW_ARGS(GrBicubicEffect, (procDataManager, tex, coefficients,
matrix, tileModes)); | 65 return new GrBicubicEffect(procDataManager, tex, coefficients, matrix, t
ileModes); |
| 67 } | 66 } |
| 68 | 67 |
| 69 /** | 68 /** |
| 70 * Create a Mitchell filter effect with a texture matrix and a domain. | 69 * Create a Mitchell filter effect with a texture matrix and a domain. |
| 71 */ | 70 */ |
| 72 static GrFragmentProcessor* Create(GrProcessorDataManager* procDataManager,
GrTexture* tex, | 71 static GrFragmentProcessor* Create(GrProcessorDataManager* procDataManager,
GrTexture* tex, |
| 73 const SkMatrix& matrix, const SkRect& dom
ain) { | 72 const SkMatrix& matrix, const SkRect& dom
ain) { |
| 74 return SkNEW_ARGS(GrBicubicEffect, (procDataManager, tex, gMitchellCoeff
icients, matrix, | 73 return new GrBicubicEffect(procDataManager, tex, gMitchellCoefficients,
matrix, domain); |
| 75 domain)); | |
| 76 } | 74 } |
| 77 | 75 |
| 78 /** | 76 /** |
| 79 * Determines whether the bicubic effect should be used based on the transfo
rmation from the | 77 * Determines whether the bicubic effect should be used based on the transfo
rmation from the |
| 80 * local coords to the device. Returns true if the bicubic effect should be
used. filterMode | 78 * local coords to the device. Returns true if the bicubic effect should be
used. filterMode |
| 81 * is set to appropriate filtering mode to use regardless of the return resu
lt (e.g. when this | 79 * is set to appropriate filtering mode to use regardless of the return resu
lt (e.g. when this |
| 82 * returns false it may indicate that the best fallback is to use kMipMap, k
Bilerp, or | 80 * returns false it may indicate that the best fallback is to use kMipMap, k
Bilerp, or |
| 83 * kNearest). | 81 * kNearest). |
| 84 */ | 82 */ |
| 85 static bool ShouldUseBicubic(const SkMatrix& localCoordsToDevice, | 83 static bool ShouldUseBicubic(const SkMatrix& localCoordsToDevice, |
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| 103 GrTextureDomain fDomain; | 101 GrTextureDomain fDomain; |
| 104 | 102 |
| 105 GR_DECLARE_FRAGMENT_PROCESSOR_TEST; | 103 GR_DECLARE_FRAGMENT_PROCESSOR_TEST; |
| 106 | 104 |
| 107 static const SkScalar gMitchellCoefficients[16]; | 105 static const SkScalar gMitchellCoefficients[16]; |
| 108 | 106 |
| 109 typedef GrSingleTextureEffect INHERITED; | 107 typedef GrSingleTextureEffect INHERITED; |
| 110 }; | 108 }; |
| 111 | 109 |
| 112 #endif | 110 #endif |
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