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1 /* | 1 /* |
2 * Copyright 2012 The Android Open Source Project | 2 * Copyright 2012 The Android Open Source Project |
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 #include "SkBitmap.h" | 8 #include "SkBitmap.h" |
9 #include "SkMagnifierImageFilter.h" | 9 #include "SkMagnifierImageFilter.h" |
10 #include "SkColorPriv.h" | 10 #include "SkColorPriv.h" |
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88 typedef GrSingleTextureEffect INHERITED; | 88 typedef GrSingleTextureEffect INHERITED; |
89 }; | 89 }; |
90 | 90 |
91 // For brevity | 91 // For brevity |
92 typedef GrGLProgramDataManager::UniformHandle UniformHandle; | 92 typedef GrGLProgramDataManager::UniformHandle UniformHandle; |
93 | 93 |
94 class GrGLMagnifierEffect : public GrGLFragmentProcessor { | 94 class GrGLMagnifierEffect : public GrGLFragmentProcessor { |
95 public: | 95 public: |
96 GrGLMagnifierEffect(const GrBackendProcessorFactory&, const GrProcessor&); | 96 GrGLMagnifierEffect(const GrBackendProcessorFactory&, const GrProcessor&); |
97 | 97 |
98 virtual void emitCode(GrGLProgramBuilder*, | 98 virtual void emitCode(GrGLFPBuilder*, |
99 const GrFragmentProcessor&, | 99 const GrFragmentProcessor&, |
100 const GrProcessorKey&, | 100 const GrProcessorKey&, |
101 const char* outputColor, | 101 const char* outputColor, |
102 const char* inputColor, | 102 const char* inputColor, |
103 const TransformedCoordsArray&, | 103 const TransformedCoordsArray&, |
104 const TextureSamplerArray&) SK_OVERRIDE; | 104 const TextureSamplerArray&) SK_OVERRIDE; |
105 | 105 |
106 virtual void setData(const GrGLProgramDataManager&, const GrProcessor&) SK_O
VERRIDE; | 106 virtual void setData(const GrGLProgramDataManager&, const GrProcessor&) SK_O
VERRIDE; |
107 | 107 |
108 private: | 108 private: |
109 UniformHandle fOffsetVar; | 109 UniformHandle fOffsetVar; |
110 UniformHandle fInvZoomVar; | 110 UniformHandle fInvZoomVar; |
111 UniformHandle fInvInsetVar; | 111 UniformHandle fInvInsetVar; |
112 | 112 |
113 typedef GrGLFragmentProcessor INHERITED; | 113 typedef GrGLFragmentProcessor INHERITED; |
114 }; | 114 }; |
115 | 115 |
116 GrGLMagnifierEffect::GrGLMagnifierEffect(const GrBackendProcessorFactory& factor
y, | 116 GrGLMagnifierEffect::GrGLMagnifierEffect(const GrBackendProcessorFactory& factor
y, |
117 const GrProcessor&) | 117 const GrProcessor&) |
118 : INHERITED(factory) { | 118 : INHERITED(factory) { |
119 } | 119 } |
120 | 120 |
121 void GrGLMagnifierEffect::emitCode(GrGLProgramBuilder* builder, | 121 void GrGLMagnifierEffect::emitCode(GrGLFPBuilder* builder, |
122 const GrFragmentProcessor&, | 122 const GrFragmentProcessor&, |
123 const GrProcessorKey& key, | 123 const GrProcessorKey& key, |
124 const char* outputColor, | 124 const char* outputColor, |
125 const char* inputColor, | 125 const char* inputColor, |
126 const TransformedCoordsArray& coords, | 126 const TransformedCoordsArray& coords, |
127 const TextureSamplerArray& samplers) { | 127 const TextureSamplerArray& samplers) { |
128 fOffsetVar = builder->addUniform( | 128 fOffsetVar = builder->addUniform( |
129 GrGLProgramBuilder::kFragment_Visibility | | 129 GrGLProgramBuilder::kFragment_Visibility | |
130 GrGLProgramBuilder::kVertex_Visibility, | 130 GrGLProgramBuilder::kVertex_Visibility, |
131 kVec2f_GrSLType, "Offset"); | 131 kVec2f_GrSLType, "Offset"); |
132 fInvZoomVar = builder->addUniform( | 132 fInvZoomVar = builder->addUniform( |
133 GrGLProgramBuilder::kFragment_Visibility | | 133 GrGLProgramBuilder::kFragment_Visibility | |
134 GrGLProgramBuilder::kVertex_Visibility, | 134 GrGLProgramBuilder::kVertex_Visibility, |
135 kVec2f_GrSLType, "InvZoom"); | 135 kVec2f_GrSLType, "InvZoom"); |
136 fInvInsetVar = builder->addUniform( | 136 fInvInsetVar = builder->addUniform( |
137 GrGLProgramBuilder::kFragment_Visibility | | 137 GrGLProgramBuilder::kFragment_Visibility | |
138 GrGLProgramBuilder::kVertex_Visibility, | 138 GrGLProgramBuilder::kVertex_Visibility, |
139 kVec2f_GrSLType, "InvInset"); | 139 kVec2f_GrSLType, "InvInset"); |
140 | 140 |
141 GrGLFragmentShaderBuilder* fsBuilder = builder->getFragmentShaderBuilder(); | 141 GrGLFPFragmentBuilder* fsBuilder = builder->getFragmentShaderBuilder(); |
142 SkString coords2D = fsBuilder->ensureFSCoords2D(coords, 0); | 142 SkString coords2D = fsBuilder->ensureFSCoords2D(coords, 0); |
143 fsBuilder->codeAppendf("\t\tvec2 coord = %s;\n", coords2D.c_str()); | 143 fsBuilder->codeAppendf("\t\tvec2 coord = %s;\n", coords2D.c_str()); |
144 fsBuilder->codeAppendf("\t\tvec2 zoom_coord = %s + %s * %s;\n", | 144 fsBuilder->codeAppendf("\t\tvec2 zoom_coord = %s + %s * %s;\n", |
145 builder->getUniformCStr(fOffsetVar), | 145 builder->getUniformCStr(fOffsetVar), |
146 coords2D.c_str(), | 146 coords2D.c_str(), |
147 builder->getUniformCStr(fInvZoomVar)); | 147 builder->getUniformCStr(fInvZoomVar)); |
148 | 148 |
149 fsBuilder->codeAppend("\t\tvec2 delta = min(coord, vec2(1.0, 1.0) - coord);\
n"); | 149 fsBuilder->codeAppend("\t\tvec2 delta = min(coord, vec2(1.0, 1.0) - coord);\
n"); |
150 | 150 |
151 fsBuilder->codeAppendf("\t\tdelta = delta * %s;\n", builder->getUniformCStr(
fInvInsetVar)); | 151 fsBuilder->codeAppendf("\t\tdelta = delta * %s;\n", builder->getUniformCStr(
fInvInsetVar)); |
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366 | 366 |
367 int x_val = SkPin32(SkScalarFloorToInt(x_interp), 0, width - 1); | 367 int x_val = SkPin32(SkScalarFloorToInt(x_interp), 0, width - 1); |
368 int y_val = SkPin32(SkScalarFloorToInt(y_interp), 0, height - 1); | 368 int y_val = SkPin32(SkScalarFloorToInt(y_interp), 0, height - 1); |
369 | 369 |
370 *dptr = sptr[y_val * width + x_val]; | 370 *dptr = sptr[y_val * width + x_val]; |
371 dptr++; | 371 dptr++; |
372 } | 372 } |
373 } | 373 } |
374 return true; | 374 return true; |
375 } | 375 } |
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