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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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126 fInvZoomVar = args.fBuilder->addUniform( | 126 fInvZoomVar = args.fBuilder->addUniform( |
127 GrGLSLProgramBuilder::kFragment_Visibility, | 127 GrGLSLProgramBuilder::kFragment_Visibility, |
128 kVec2f_GrSLType, kDefault_GrSLPrecision, "InvZoom"); | 128 kVec2f_GrSLType, kDefault_GrSLPrecision, "InvZoom"); |
129 fInvInsetVar = args.fBuilder->addUniform( | 129 fInvInsetVar = args.fBuilder->addUniform( |
130 GrGLSLProgramBuilder::kFragment_Visibility, | 130 GrGLSLProgramBuilder::kFragment_Visibility, |
131 kVec2f_GrSLType, kDefault_GrSLPrecision, "InvInset"); | 131 kVec2f_GrSLType, kDefault_GrSLPrecision, "InvInset"); |
132 fBoundsVar = args.fBuilder->addUniform( | 132 fBoundsVar = args.fBuilder->addUniform( |
133 GrGLSLProgramBuilder::kFragment_Visibility, | 133 GrGLSLProgramBuilder::kFragment_Visibility, |
134 kVec4f_GrSLType, kDefault_GrSLPrecision, "Bounds"); | 134 kVec4f_GrSLType, kDefault_GrSLPrecision, "Bounds"); |
135 | 135 |
136 GrGLSLFragmentBuilder* fsBuilder = args.fBuilder->getFragmentShaderBuilder()
; | 136 GrGLSLFragmentBuilder* fragBuilder = args.fFragBuilder; |
137 SkString coords2D = fsBuilder->ensureFSCoords2D(args.fCoords, 0); | 137 SkString coords2D = fragBuilder->ensureFSCoords2D(args.fCoords, 0); |
138 fsBuilder->codeAppendf("\t\tvec2 coord = %s;\n", coords2D.c_str()); | 138 fragBuilder->codeAppendf("\t\tvec2 coord = %s;\n", coords2D.c_str()); |
139 fsBuilder->codeAppendf("\t\tvec2 zoom_coord = %s + %s * %s;\n", | 139 fragBuilder->codeAppendf("\t\tvec2 zoom_coord = %s + %s * %s;\n", |
140 args.fBuilder->getUniformCStr(fOffsetVar), | 140 args.fBuilder->getUniformCStr(fOffsetVar), |
141 coords2D.c_str(), | 141 coords2D.c_str(), |
142 args.fBuilder->getUniformCStr(fInvZoomVar)); | 142 args.fBuilder->getUniformCStr(fInvZoomVar)); |
143 const char* bounds = args.fBuilder->getUniformCStr(fBoundsVar); | 143 const char* bounds = args.fBuilder->getUniformCStr(fBoundsVar); |
144 fsBuilder->codeAppendf("\t\tvec2 delta = (coord - %s.xy) * %s.zw;\n", bounds
, bounds); | 144 fragBuilder->codeAppendf("\t\tvec2 delta = (coord - %s.xy) * %s.zw;\n", boun
ds, bounds); |
145 fsBuilder->codeAppendf("\t\tdelta = min(delta, vec2(1.0, 1.0) - delta);\n"); | 145 fragBuilder->codeAppendf("\t\tdelta = min(delta, vec2(1.0, 1.0) - delta);\n"
); |
146 fsBuilder->codeAppendf("\t\tdelta = delta * %s;\n", | 146 fragBuilder->codeAppendf("\t\tdelta = delta * %s;\n", |
147 args.fBuilder->getUniformCStr(fInvInsetVar)); | 147 args.fBuilder->getUniformCStr(fInvInsetVar)); |
148 | 148 |
149 fsBuilder->codeAppend("\t\tfloat weight = 0.0;\n"); | 149 fragBuilder->codeAppend("\t\tfloat weight = 0.0;\n"); |
150 fsBuilder->codeAppend("\t\tif (delta.s < 2.0 && delta.t < 2.0) {\n"); | 150 fragBuilder->codeAppend("\t\tif (delta.s < 2.0 && delta.t < 2.0) {\n"); |
151 fsBuilder->codeAppend("\t\t\tdelta = vec2(2.0, 2.0) - delta;\n"); | 151 fragBuilder->codeAppend("\t\t\tdelta = vec2(2.0, 2.0) - delta;\n"); |
152 fsBuilder->codeAppend("\t\t\tfloat dist = length(delta);\n"); | 152 fragBuilder->codeAppend("\t\t\tfloat dist = length(delta);\n"); |
153 fsBuilder->codeAppend("\t\t\tdist = max(2.0 - dist, 0.0);\n"); | 153 fragBuilder->codeAppend("\t\t\tdist = max(2.0 - dist, 0.0);\n"); |
154 fsBuilder->codeAppend("\t\t\tweight = min(dist * dist, 1.0);\n"); | 154 fragBuilder->codeAppend("\t\t\tweight = min(dist * dist, 1.0);\n"); |
155 fsBuilder->codeAppend("\t\t} else {\n"); | 155 fragBuilder->codeAppend("\t\t} else {\n"); |
156 fsBuilder->codeAppend("\t\t\tvec2 delta_squared = delta * delta;\n"); | 156 fragBuilder->codeAppend("\t\t\tvec2 delta_squared = delta * delta;\n"); |
157 fsBuilder->codeAppend("\t\t\tweight = min(min(delta_squared.x, delta_squared
.y), 1.0);\n"); | 157 fragBuilder->codeAppend("\t\t\tweight = min(min(delta_squared.x, delta_squar
ed.y), 1.0);\n"); |
158 fsBuilder->codeAppend("\t\t}\n"); | 158 fragBuilder->codeAppend("\t\t}\n"); |
159 | 159 |
160 fsBuilder->codeAppend("\t\tvec2 mix_coord = mix(coord, zoom_coord, weight);\
n"); | 160 fragBuilder->codeAppend("\t\tvec2 mix_coord = mix(coord, zoom_coord, weight)
;\n"); |
161 fsBuilder->codeAppend("\t\tvec4 output_color = "); | 161 fragBuilder->codeAppend("\t\tvec4 output_color = "); |
162 fsBuilder->appendTextureLookup(args.fSamplers[0], "mix_coord"); | 162 fragBuilder->appendTextureLookup(args.fSamplers[0], "mix_coord"); |
163 fsBuilder->codeAppend(";\n"); | 163 fragBuilder->codeAppend(";\n"); |
164 | 164 |
165 fsBuilder->codeAppendf("\t\t%s = output_color;", args.fOutputColor); | 165 fragBuilder->codeAppendf("\t\t%s = output_color;", args.fOutputColor); |
166 SkString modulate; | 166 SkString modulate; |
167 GrGLSLMulVarBy4f(&modulate, args.fOutputColor, args.fInputColor); | 167 GrGLSLMulVarBy4f(&modulate, args.fOutputColor, args.fInputColor); |
168 fsBuilder->codeAppend(modulate.c_str()); | 168 fragBuilder->codeAppend(modulate.c_str()); |
169 } | 169 } |
170 | 170 |
171 void GrGLMagnifierEffect::onSetData(const GrGLSLProgramDataManager& pdman, | 171 void GrGLMagnifierEffect::onSetData(const GrGLSLProgramDataManager& pdman, |
172 const GrProcessor& effect) { | 172 const GrProcessor& effect) { |
173 const GrMagnifierEffect& zoom = effect.cast<GrMagnifierEffect>(); | 173 const GrMagnifierEffect& zoom = effect.cast<GrMagnifierEffect>(); |
174 pdman.set2f(fOffsetVar, zoom.x_offset(), zoom.y_offset()); | 174 pdman.set2f(fOffsetVar, zoom.x_offset(), zoom.y_offset()); |
175 pdman.set2f(fInvZoomVar, zoom.x_inv_zoom(), zoom.y_inv_zoom()); | 175 pdman.set2f(fInvZoomVar, zoom.x_inv_zoom(), zoom.y_inv_zoom()); |
176 pdman.set2f(fInvInsetVar, zoom.x_inv_inset(), zoom.y_inv_inset()); | 176 pdman.set2f(fInvInsetVar, zoom.x_inv_inset(), zoom.y_inv_inset()); |
177 pdman.set4f(fBoundsVar, zoom.bounds().x(), zoom.bounds().y(), | 177 pdman.set4f(fBoundsVar, zoom.bounds().x(), zoom.bounds().y(), |
178 zoom.bounds().width(), zoom.bounds().height()); | 178 zoom.bounds().width(), zoom.bounds().height()); |
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369 | 369 |
370 #ifndef SK_IGNORE_TO_STRING | 370 #ifndef SK_IGNORE_TO_STRING |
371 void SkMagnifierImageFilter::toString(SkString* str) const { | 371 void SkMagnifierImageFilter::toString(SkString* str) const { |
372 str->appendf("SkMagnifierImageFilter: ("); | 372 str->appendf("SkMagnifierImageFilter: ("); |
373 str->appendf("src: (%f,%f,%f,%f) ", | 373 str->appendf("src: (%f,%f,%f,%f) ", |
374 fSrcRect.fLeft, fSrcRect.fTop, fSrcRect.fRight, fSrcRect.fBotto
m); | 374 fSrcRect.fLeft, fSrcRect.fTop, fSrcRect.fRight, fSrcRect.fBotto
m); |
375 str->appendf("inset: %f", fInset); | 375 str->appendf("inset: %f", fInset); |
376 str->append(")"); | 376 str->append(")"); |
377 } | 377 } |
378 #endif | 378 #endif |
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