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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 |
| 11 #include "GrSingleTextureEffect.h" | 11 #include "GrSingleTextureEffect.h" |
| 12 #include "GrTextureDomain.h" | 12 #include "GrTextureDomain.h" |
| 13 #include "gl/GrGLFragmentProcessor.h" | 13 #include "glsl/GrGLSLFragmentProcessor.h" |
| 14 | 14 |
| 15 class GrGLBicubicEffect; | 15 class GrGLBicubicEffect; |
| 16 class GrInvariantOutput; | 16 class GrInvariantOutput; |
| 17 | 17 |
| 18 class GrBicubicEffect : public GrSingleTextureEffect { | 18 class GrBicubicEffect : public GrSingleTextureEffect { |
| 19 public: | 19 public: |
| 20 enum { | 20 enum { |
| 21 kFilterTexelPad = 2, // Given a src rect in texels to be filtered, this
number of | 21 kFilterTexelPad = 2, // Given a src rect in texels to be filtered, this
number of |
| 22 // surrounding texels are needed by the kernel in x
and y. | 22 // surrounding texels are needed by the kernel in x
and y. |
| 23 }; | 23 }; |
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| 80 */ | 80 */ |
| 81 static bool ShouldUseBicubic(const SkMatrix& localCoordsToDevice, | 81 static bool ShouldUseBicubic(const SkMatrix& localCoordsToDevice, |
| 82 GrTextureParams::FilterMode* filterMode); | 82 GrTextureParams::FilterMode* filterMode); |
| 83 | 83 |
| 84 private: | 84 private: |
| 85 GrBicubicEffect(GrTexture*, const SkScalar coefficients[16], const SkMatrix
&matrix, | 85 GrBicubicEffect(GrTexture*, const SkScalar coefficients[16], const SkMatrix
&matrix, |
| 86 const SkShader::TileMode tileModes[2]); | 86 const SkShader::TileMode tileModes[2]); |
| 87 GrBicubicEffect(GrTexture*, const SkScalar coefficients[16], const SkMatrix
&matrix, | 87 GrBicubicEffect(GrTexture*, const SkScalar coefficients[16], const SkMatrix
&matrix, |
| 88 const SkRect& domain); | 88 const SkRect& domain); |
| 89 | 89 |
| 90 GrGLFragmentProcessor* onCreateGLInstance() const override; | 90 GrGLSLFragmentProcessor* onCreateGLInstance() const override; |
| 91 | 91 |
| 92 void onGetGLProcessorKey(const GrGLSLCaps&, GrProcessorKeyBuilder*) const ov
erride; | 92 void onGetGLProcessorKey(const GrGLSLCaps&, GrProcessorKeyBuilder*) const ov
erride; |
| 93 | 93 |
| 94 bool onIsEqual(const GrFragmentProcessor&) const override; | 94 bool onIsEqual(const GrFragmentProcessor&) const override; |
| 95 | 95 |
| 96 void onComputeInvariantOutput(GrInvariantOutput* inout) const override; | 96 void onComputeInvariantOutput(GrInvariantOutput* inout) const override; |
| 97 | 97 |
| 98 float fCoefficients[16]; | 98 float fCoefficients[16]; |
| 99 GrTextureDomain fDomain; | 99 GrTextureDomain fDomain; |
| 100 | 100 |
| 101 GR_DECLARE_FRAGMENT_PROCESSOR_TEST; | 101 GR_DECLARE_FRAGMENT_PROCESSOR_TEST; |
| 102 | 102 |
| 103 static const SkScalar gMitchellCoefficients[16]; | 103 static const SkScalar gMitchellCoefficients[16]; |
| 104 | 104 |
| 105 typedef GrSingleTextureEffect INHERITED; | 105 typedef GrSingleTextureEffect INHERITED; |
| 106 }; | 106 }; |
| 107 | 107 |
| 108 #endif | 108 #endif |
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