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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 }; |
11 | 11 |
12 | 12 |
13 class GrGLBicubicEffect : public GrGLEffect { | 13 class GrGLBicubicEffect : public GrGLEffect { |
14 public: | 14 public: |
15 GrGLBicubicEffect(const GrBackendEffectFactory& factory, | 15 GrGLBicubicEffect(const GrBackendEffectFactory& factory, |
16 const GrDrawEffect&); | 16 const GrDrawEffect&); |
17 virtual void emitCode(GrGLShaderBuilder*, | 17 virtual void emitCode(GrGLShaderBuilder*, |
18 const GrDrawEffect&, | 18 const GrDrawEffect&, |
19 EffectKey, | 19 EffectKey, |
20 const char* outputColor, | 20 const char* outputColor, |
21 const char* inputColor, | 21 const char* inputColor, |
| 22 const TransformedCoordsArray&, |
22 const TextureSamplerArray&) SK_OVERRIDE; | 23 const TextureSamplerArray&) SK_OVERRIDE; |
23 | 24 |
24 static inline EffectKey GenKey(const GrDrawEffect&, const GrGLCaps&); | |
25 | |
26 virtual void setData(const GrGLUniformManager&, const GrDrawEffect&) SK_OVER
RIDE; | 25 virtual void setData(const GrGLUniformManager&, const GrDrawEffect&) SK_OVER
RIDE; |
27 | 26 |
28 private: | 27 private: |
29 typedef GrGLUniformManager::UniformHandle UniformHandle; | 28 typedef GrGLUniformManager::UniformHandle UniformHandle; |
30 | 29 |
31 UniformHandle fCoefficientsUni; | 30 UniformHandle fCoefficientsUni; |
32 UniformHandle fImageIncrementUni; | 31 UniformHandle fImageIncrementUni; |
33 | 32 |
34 GrGLEffectMatrix fEffectMatrix; | |
35 | |
36 typedef GrGLEffect INHERITED; | 33 typedef GrGLEffect INHERITED; |
37 }; | 34 }; |
38 | 35 |
39 GrGLBicubicEffect::GrGLBicubicEffect(const GrBackendEffectFactory& factory, | 36 GrGLBicubicEffect::GrGLBicubicEffect(const GrBackendEffectFactory& factory, cons
t GrDrawEffect&) |
40 const GrDrawEffect& drawEffect) | 37 : INHERITED(factory) { |
41 : INHERITED(factory) | |
42 , fEffectMatrix(drawEffect.castEffect<GrBicubicEffect>().coordsType()) { | |
43 } | 38 } |
44 | 39 |
45 void GrGLBicubicEffect::emitCode(GrGLShaderBuilder* builder, | 40 void GrGLBicubicEffect::emitCode(GrGLShaderBuilder* builder, |
46 const GrDrawEffect&, | 41 const GrDrawEffect&, |
47 EffectKey key, | 42 EffectKey key, |
48 const char* outputColor, | 43 const char* outputColor, |
49 const char* inputColor, | 44 const char* inputColor, |
| 45 const TransformedCoordsArray& coords, |
50 const TextureSamplerArray& samplers) { | 46 const TextureSamplerArray& samplers) { |
51 SkString coords; | 47 SkString coords2D = builder->ensureFSCoords2D(coords, 0); |
52 fEffectMatrix.emitCodeMakeFSCoords2D(builder, key, &coords); | |
53 fCoefficientsUni = builder->addUniform(GrGLShaderBuilder::kFragment_Visibili
ty, | 48 fCoefficientsUni = builder->addUniform(GrGLShaderBuilder::kFragment_Visibili
ty, |
54 kMat44f_GrSLType, "Coefficients"); | 49 kMat44f_GrSLType, "Coefficients"); |
55 fImageIncrementUni = builder->addUniform(GrGLShaderBuilder::kFragment_Visibi
lity, | 50 fImageIncrementUni = builder->addUniform(GrGLShaderBuilder::kFragment_Visibi
lity, |
56 kVec2f_GrSLType, "ImageIncrement"); | 51 kVec2f_GrSLType, "ImageIncrement"); |
57 | 52 |
58 const char* imgInc = builder->getUniformCStr(fImageIncrementUni); | 53 const char* imgInc = builder->getUniformCStr(fImageIncrementUni); |
59 const char* coeff = builder->getUniformCStr(fCoefficientsUni); | 54 const char* coeff = builder->getUniformCStr(fCoefficientsUni); |
60 | 55 |
61 SkString cubicBlendName; | 56 SkString cubicBlendName; |
62 | 57 |
63 static const GrGLShaderVar gCubicBlendArgs[] = { | 58 static const GrGLShaderVar gCubicBlendArgs[] = { |
64 GrGLShaderVar("coefficients", kMat44f_GrSLType), | 59 GrGLShaderVar("coefficients", kMat44f_GrSLType), |
65 GrGLShaderVar("t", kFloat_GrSLType), | 60 GrGLShaderVar("t", kFloat_GrSLType), |
66 GrGLShaderVar("c0", kVec4f_GrSLType), | 61 GrGLShaderVar("c0", kVec4f_GrSLType), |
67 GrGLShaderVar("c1", kVec4f_GrSLType), | 62 GrGLShaderVar("c1", kVec4f_GrSLType), |
68 GrGLShaderVar("c2", kVec4f_GrSLType), | 63 GrGLShaderVar("c2", kVec4f_GrSLType), |
69 GrGLShaderVar("c3", kVec4f_GrSLType), | 64 GrGLShaderVar("c3", kVec4f_GrSLType), |
70 }; | 65 }; |
71 builder->fsEmitFunction(kVec4f_GrSLType, | 66 builder->fsEmitFunction(kVec4f_GrSLType, |
72 "cubicBlend", | 67 "cubicBlend", |
73 SK_ARRAY_COUNT(gCubicBlendArgs), | 68 SK_ARRAY_COUNT(gCubicBlendArgs), |
74 gCubicBlendArgs, | 69 gCubicBlendArgs, |
75 "\tvec4 ts = vec4(1.0, t, t * t, t * t * t);\n" | 70 "\tvec4 ts = vec4(1.0, t, t * t, t * t * t);\n" |
76 "\tvec4 c = coefficients * ts;\n" | 71 "\tvec4 c = coefficients * ts;\n" |
77 "\treturn c.x * c0 + c.y * c1 + c.z * c2 + c.w * c3;
\n", | 72 "\treturn c.x * c0 + c.y * c1 + c.z * c2 + c.w * c3;
\n", |
78 &cubicBlendName); | 73 &cubicBlendName); |
79 builder->fsCodeAppendf("\tvec2 coord = %s - %s * vec2(0.5, 0.5);\n", coords.
c_str(), imgInc); | 74 builder->fsCodeAppendf("\tvec2 coord = %s - %s * vec2(0.5, 0.5);\n", coords2
D.c_str(), imgInc); |
80 builder->fsCodeAppendf("\tvec2 f = fract(coord / %s);\n", imgInc); | 75 builder->fsCodeAppendf("\tvec2 f = fract(coord / %s);\n", imgInc); |
81 for (int y = 0; y < 4; ++y) { | 76 for (int y = 0; y < 4; ++y) { |
82 for (int x = 0; x < 4; ++x) { | 77 for (int x = 0; x < 4; ++x) { |
83 SkString coord; | 78 SkString coord; |
84 coord.printf("coord + %s * vec2(%d, %d)", imgInc, x - 1, y - 1); | 79 coord.printf("coord + %s * vec2(%d, %d)", imgInc, x - 1, y - 1); |
85 builder->fsCodeAppendf("\tvec4 s%d%d = ", x, y); | 80 builder->fsCodeAppendf("\tvec4 s%d%d = ", x, y); |
86 builder->fsAppendTextureLookup(samplers[0], coord.c_str()); | 81 builder->fsAppendTextureLookup(samplers[0], coord.c_str()); |
87 builder->fsCodeAppend(";\n"); | 82 builder->fsCodeAppend(";\n"); |
88 } | 83 } |
89 builder->fsCodeAppendf("\tvec4 s%d = %s(%s, f.x, s0%d, s1%d, s2%d, s3%d)
;\n", y, cubicBlendName.c_str(), coeff, y, y, y, y); | 84 builder->fsCodeAppendf("\tvec4 s%d = %s(%s, f.x, s0%d, s1%d, s2%d, s3%d)
;\n", y, cubicBlendName.c_str(), coeff, y, y, y, y); |
90 } | 85 } |
91 builder->fsCodeAppendf("\t%s = %s(%s, f.y, s0, s1, s2, s3);\n", outputColor,
cubicBlendName.c_str(), coeff); | 86 builder->fsCodeAppendf("\t%s = %s(%s, f.y, s0, s1, s2, s3);\n", outputColor,
cubicBlendName.c_str(), coeff); |
92 } | 87 } |
93 | 88 |
94 GrGLEffect::EffectKey GrGLBicubicEffect::GenKey(const GrDrawEffect& drawEffect,
const GrGLCaps&) { | |
95 const GrBicubicEffect& bicubic = drawEffect.castEffect<GrBicubicEffect>(); | |
96 EffectKey matrixKey = GrGLEffectMatrix::GenKey(bicubic.getMatrix(), | |
97 drawEffect, | |
98 bicubic.coordsType(), | |
99 bicubic.texture(0)); | |
100 return matrixKey; | |
101 } | |
102 | |
103 void GrGLBicubicEffect::setData(const GrGLUniformManager& uman, | 89 void GrGLBicubicEffect::setData(const GrGLUniformManager& uman, |
104 const GrDrawEffect& drawEffect) { | 90 const GrDrawEffect& drawEffect) { |
105 const GrBicubicEffect& effect = drawEffect.castEffect<GrBicubicEffect>(); | 91 const GrBicubicEffect& effect = drawEffect.castEffect<GrBicubicEffect>(); |
106 GrTexture& texture = *effect.texture(0); | 92 GrTexture& texture = *effect.texture(0); |
107 float imageIncrement[2]; | 93 float imageIncrement[2]; |
108 imageIncrement[0] = 1.0f / texture.width(); | 94 imageIncrement[0] = 1.0f / texture.width(); |
109 imageIncrement[1] = 1.0f / texture.height(); | 95 imageIncrement[1] = 1.0f / texture.height(); |
110 uman.set2fv(fImageIncrementUni, 0, 1, imageIncrement); | 96 uman.set2fv(fImageIncrementUni, 0, 1, imageIncrement); |
111 uman.setMatrix4f(fCoefficientsUni, effect.coefficients()); | 97 uman.setMatrix4f(fCoefficientsUni, effect.coefficients()); |
112 fEffectMatrix.setData(uman, | |
113 effect.getMatrix(), | |
114 drawEffect, | |
115 effect.texture(0)); | |
116 } | 98 } |
117 | 99 |
118 GrBicubicEffect::GrBicubicEffect(GrTexture* texture, | 100 GrBicubicEffect::GrBicubicEffect(GrTexture* texture, |
119 const SkScalar coefficients[16]) | 101 const SkScalar coefficients[16]) |
120 : INHERITED(texture, MakeDivByTextureWHMatrix(texture)) { | 102 : INHERITED(texture, MakeDivByTextureWHMatrix(texture)) { |
121 for (int y = 0; y < 4; y++) { | 103 for (int y = 0; y < 4; y++) { |
122 for (int x = 0; x < 4; x++) { | 104 for (int x = 0; x < 4; x++) { |
123 // Convert from row-major scalars to column-major floats. | 105 // Convert from row-major scalars to column-major floats. |
124 fCoefficients[x * 4 + y] = SkScalarToFloat(coefficients[y * 4 + x]); | 106 fCoefficients[x * 4 + y] = SkScalarToFloat(coefficients[y * 4 + x]); |
125 } | 107 } |
126 } | 108 } |
127 } | 109 } |
128 | 110 |
129 GrBicubicEffect::GrBicubicEffect(GrTexture* texture, | 111 GrBicubicEffect::GrBicubicEffect(GrTexture* texture, |
130 const SkScalar coefficients[16], | 112 const SkScalar coefficients[16], |
131 const SkMatrix &matrix, | 113 const SkMatrix &matrix, |
132 const GrTextureParams ¶ms, | 114 const GrTextureParams ¶ms, |
133 CoordsType coordsType) | 115 GrCoordSet coordSet) |
134 : INHERITED(texture, MakeDivByTextureWHMatrix(texture), params, coordsType) { | 116 : INHERITED(texture, MakeDivByTextureWHMatrix(texture), params, coordSet) { |
135 for (int y = 0; y < 4; y++) { | 117 for (int y = 0; y < 4; y++) { |
136 for (int x = 0; x < 4; x++) { | 118 for (int x = 0; x < 4; x++) { |
137 // Convert from row-major scalars to column-major floats. | 119 // Convert from row-major scalars to column-major floats. |
138 fCoefficients[x * 4 + y] = SkScalarToFloat(coefficients[y * 4 + x]); | 120 fCoefficients[x * 4 + y] = SkScalarToFloat(coefficients[y * 4 + x]); |
139 } | 121 } |
140 } | 122 } |
141 } | 123 } |
142 | 124 |
143 GrBicubicEffect::~GrBicubicEffect() { | 125 GrBicubicEffect::~GrBicubicEffect() { |
144 } | 126 } |
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166 const GrDrawTargetCaps&, | 148 const GrDrawTargetCaps&, |
167 GrTexture* textures[]) { | 149 GrTexture* textures[]) { |
168 int texIdx = random->nextBool() ? GrEffectUnitTest::kSkiaPMTextureIdx : | 150 int texIdx = random->nextBool() ? GrEffectUnitTest::kSkiaPMTextureIdx : |
169 GrEffectUnitTest::kAlphaTextureIdx; | 151 GrEffectUnitTest::kAlphaTextureIdx; |
170 SkScalar coefficients[16]; | 152 SkScalar coefficients[16]; |
171 for (int i = 0; i < 16; i++) { | 153 for (int i = 0; i < 16; i++) { |
172 coefficients[i] = random->nextSScalar1(); | 154 coefficients[i] = random->nextSScalar1(); |
173 } | 155 } |
174 return GrBicubicEffect::Create(textures[texIdx], coefficients); | 156 return GrBicubicEffect::Create(textures[texIdx], coefficients); |
175 } | 157 } |
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