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1 #include "GrBicubicEffect.h" | 1 #include "GrBicubicEffect.h" |
2 | 2 |
3 #define DS(x) SkDoubleToScalar(x) | 3 #define DS(x) SkDoubleToScalar(x) |
4 | 4 |
5 const SkScalar GrBicubicEffect::gMitchellCoefficients[16] = { | 5 const SkScalar GrBicubicEffect::gMitchellCoefficients[16] = { |
6 DS( 1.0 / 18.0), DS(-9.0 / 18.0), DS( 15.0 / 18.0), DS( -7.0 / 18.0), | 6 DS( 1.0 / 18.0), DS(-9.0 / 18.0), DS( 15.0 / 18.0), DS( -7.0 / 18.0), |
7 DS(16.0 / 18.0), DS( 0.0 / 18.0), DS(-36.0 / 18.0), DS( 21.0 / 18.0), | 7 DS(16.0 / 18.0), DS( 0.0 / 18.0), DS(-36.0 / 18.0), DS( 21.0 / 18.0), |
8 DS( 1.0 / 18.0), DS( 9.0 / 18.0), DS( 27.0 / 18.0), DS(-21.0 / 18.0), | 8 DS( 1.0 / 18.0), DS( 9.0 / 18.0), DS( 27.0 / 18.0), DS(-21.0 / 18.0), |
9 DS( 0.0 / 18.0), DS( 0.0 / 18.0), DS( -6.0 / 18.0), DS( 7.0 / 18.0), | 9 DS( 0.0 / 18.0), DS( 0.0 / 18.0), DS( -6.0 / 18.0), DS( 7.0 / 18.0), |
10 }; | 10 }; |
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99 const GrBicubicEffect& effect = drawEffect.castEffect<GrBicubicEffect>(); | 99 const GrBicubicEffect& effect = drawEffect.castEffect<GrBicubicEffect>(); |
100 GrTexture& texture = *effect.texture(0); | 100 GrTexture& texture = *effect.texture(0); |
101 float imageIncrement[2]; | 101 float imageIncrement[2]; |
102 imageIncrement[0] = 1.0f / texture.width(); | 102 imageIncrement[0] = 1.0f / texture.width(); |
103 imageIncrement[1] = 1.0f / texture.height(); | 103 imageIncrement[1] = 1.0f / texture.height(); |
104 uman.set2fv(fImageIncrementUni, 1, imageIncrement); | 104 uman.set2fv(fImageIncrementUni, 1, imageIncrement); |
105 uman.setMatrix4f(fCoefficientsUni, effect.coefficients()); | 105 uman.setMatrix4f(fCoefficientsUni, effect.coefficients()); |
106 } | 106 } |
107 | 107 |
108 GrBicubicEffect::GrBicubicEffect(GrTexture* texture, | 108 GrBicubicEffect::GrBicubicEffect(GrTexture* texture, |
109 const SkScalar coefficients[16]) | |
110 : INHERITED(texture, MakeDivByTextureWHMatrix(texture)) { | |
111 for (int y = 0; y < 4; y++) { | |
112 for (int x = 0; x < 4; x++) { | |
113 // Convert from row-major scalars to column-major floats. | |
114 fCoefficients[x * 4 + y] = SkScalarToFloat(coefficients[y * 4 + x]); | |
115 } | |
116 } | |
117 this->setWillNotUseInputColor(); | |
118 } | |
119 | |
120 GrBicubicEffect::GrBicubicEffect(GrTexture* texture, | |
121 const SkScalar coefficients[16], | 109 const SkScalar coefficients[16], |
122 const SkMatrix &matrix, | 110 const SkMatrix &matrix, |
123 const GrTextureParams ¶ms, | 111 const SkShader::TileMode tileModes[2]) |
124 GrCoordSet coordSet) | 112 : INHERITED(texture, matrix, GrTextureParams(tileModes, GrTextureParams::kNone
_FilterMode)) { |
125 : INHERITED(texture, matrix, params, coordSet) { | |
126 for (int y = 0; y < 4; y++) { | 113 for (int y = 0; y < 4; y++) { |
127 for (int x = 0; x < 4; x++) { | 114 for (int x = 0; x < 4; x++) { |
128 // Convert from row-major scalars to column-major floats. | 115 // Convert from row-major scalars to column-major floats. |
129 fCoefficients[x * 4 + y] = SkScalarToFloat(coefficients[y * 4 + x]); | 116 fCoefficients[x * 4 + y] = SkScalarToFloat(coefficients[y * 4 + x]); |
130 } | 117 } |
131 } | 118 } |
132 this->setWillNotUseInputColor(); | 119 this->setWillNotUseInputColor(); |
133 } | 120 } |
134 | 121 |
135 GrBicubicEffect::~GrBicubicEffect() { | 122 GrBicubicEffect::~GrBicubicEffect() { |
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158 const GrDrawTargetCaps&, | 145 const GrDrawTargetCaps&, |
159 GrTexture* textures[]) { | 146 GrTexture* textures[]) { |
160 int texIdx = random->nextBool() ? GrEffectUnitTest::kSkiaPMTextureIdx : | 147 int texIdx = random->nextBool() ? GrEffectUnitTest::kSkiaPMTextureIdx : |
161 GrEffectUnitTest::kAlphaTextureIdx; | 148 GrEffectUnitTest::kAlphaTextureIdx; |
162 SkScalar coefficients[16]; | 149 SkScalar coefficients[16]; |
163 for (int i = 0; i < 16; i++) { | 150 for (int i = 0; i < 16; i++) { |
164 coefficients[i] = random->nextSScalar1(); | 151 coefficients[i] = random->nextSScalar1(); |
165 } | 152 } |
166 return GrBicubicEffect::Create(textures[texIdx], coefficients); | 153 return GrBicubicEffect::Create(textures[texIdx], coefficients); |
167 } | 154 } |
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