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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" |
11 #include "SkDevice.h" | 11 #include "SkDevice.h" |
12 #include "SkReadBuffer.h" | 12 #include "SkReadBuffer.h" |
13 #include "SkWriteBuffer.h" | 13 #include "SkWriteBuffer.h" |
14 #include "SkValidationUtils.h" | 14 #include "SkValidationUtils.h" |
15 | 15 |
16 //////////////////////////////////////////////////////////////////////////////// | 16 //////////////////////////////////////////////////////////////////////////////// |
17 #if SK_SUPPORT_GPU | 17 #if SK_SUPPORT_GPU |
18 #include "GrInvariantOutput.h" | 18 #include "GrInvariantOutput.h" |
19 #include "effects/GrSingleTextureEffect.h" | 19 #include "effects/GrSingleTextureEffect.h" |
20 #include "gl/GrGLFragmentProcessor.h" | 20 #include "gl/GrGLFragmentProcessor.h" |
21 #include "gl/GrGLTexture.h" | 21 #include "gl/GrGLTexture.h" |
22 #include "gl/builders/GrGLProgramBuilder.h" | 22 #include "glsl/GrGLSLFragmentShaderBuilder.h" |
| 23 #include "glsl/GrGLSLProgramBuilder.h" |
23 #include "glsl/GrGLSLProgramDataManager.h" | 24 #include "glsl/GrGLSLProgramDataManager.h" |
24 | 25 |
25 class GrMagnifierEffect : public GrSingleTextureEffect { | 26 class GrMagnifierEffect : public GrSingleTextureEffect { |
26 | 27 |
27 public: | 28 public: |
28 static GrFragmentProcessor* Create(GrTexture* texture, | 29 static GrFragmentProcessor* Create(GrTexture* texture, |
29 const SkRect& bounds, | 30 const SkRect& bounds, |
30 float xOffset, | 31 float xOffset, |
31 float yOffset, | 32 float yOffset, |
32 float xInvZoom, | 33 float xInvZoom, |
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114 UniformHandle fBoundsVar; | 115 UniformHandle fBoundsVar; |
115 | 116 |
116 typedef GrGLFragmentProcessor INHERITED; | 117 typedef GrGLFragmentProcessor INHERITED; |
117 }; | 118 }; |
118 | 119 |
119 GrGLMagnifierEffect::GrGLMagnifierEffect(const GrProcessor&) { | 120 GrGLMagnifierEffect::GrGLMagnifierEffect(const GrProcessor&) { |
120 } | 121 } |
121 | 122 |
122 void GrGLMagnifierEffect::emitCode(EmitArgs& args) { | 123 void GrGLMagnifierEffect::emitCode(EmitArgs& args) { |
123 fOffsetVar = args.fBuilder->addUniform( | 124 fOffsetVar = args.fBuilder->addUniform( |
124 GrGLProgramBuilder::kFragment_Visibility | | 125 GrGLSLProgramBuilder::kFragment_Visibility, |
125 GrGLProgramBuilder::kVertex_Visibility, | |
126 kVec2f_GrSLType, kDefault_GrSLPrecision, "Offset"); | 126 kVec2f_GrSLType, kDefault_GrSLPrecision, "Offset"); |
127 fInvZoomVar = args.fBuilder->addUniform( | 127 fInvZoomVar = args.fBuilder->addUniform( |
128 GrGLProgramBuilder::kFragment_Visibility | | 128 GrGLSLProgramBuilder::kFragment_Visibility, |
129 GrGLProgramBuilder::kVertex_Visibility, | |
130 kVec2f_GrSLType, kDefault_GrSLPrecision, "InvZoom"); | 129 kVec2f_GrSLType, kDefault_GrSLPrecision, "InvZoom"); |
131 fInvInsetVar = args.fBuilder->addUniform( | 130 fInvInsetVar = args.fBuilder->addUniform( |
132 GrGLProgramBuilder::kFragment_Visibility | | 131 GrGLSLProgramBuilder::kFragment_Visibility, |
133 GrGLProgramBuilder::kVertex_Visibility, | |
134 kVec2f_GrSLType, kDefault_GrSLPrecision, "InvInset"); | 132 kVec2f_GrSLType, kDefault_GrSLPrecision, "InvInset"); |
135 fBoundsVar = args.fBuilder->addUniform( | 133 fBoundsVar = args.fBuilder->addUniform( |
136 GrGLProgramBuilder::kFragment_Visibility | | 134 GrGLSLProgramBuilder::kFragment_Visibility, |
137 GrGLProgramBuilder::kVertex_Visibility, | |
138 kVec4f_GrSLType, kDefault_GrSLPrecision, "Bounds"); | 135 kVec4f_GrSLType, kDefault_GrSLPrecision, "Bounds"); |
139 | 136 |
140 GrGLFragmentBuilder* fsBuilder = args.fBuilder->getFragmentShaderBuilder(); | 137 GrGLSLFragmentBuilder* fsBuilder = args.fBuilder->getFragmentShaderBuilder()
; |
141 SkString coords2D = fsBuilder->ensureFSCoords2D(args.fCoords, 0); | 138 SkString coords2D = fsBuilder->ensureFSCoords2D(args.fCoords, 0); |
142 fsBuilder->codeAppendf("\t\tvec2 coord = %s;\n", coords2D.c_str()); | 139 fsBuilder->codeAppendf("\t\tvec2 coord = %s;\n", coords2D.c_str()); |
143 fsBuilder->codeAppendf("\t\tvec2 zoom_coord = %s + %s * %s;\n", | 140 fsBuilder->codeAppendf("\t\tvec2 zoom_coord = %s + %s * %s;\n", |
144 args.fBuilder->getUniformCStr(fOffsetVar), | 141 args.fBuilder->getUniformCStr(fOffsetVar), |
145 coords2D.c_str(), | 142 coords2D.c_str(), |
146 args.fBuilder->getUniformCStr(fInvZoomVar)); | 143 args.fBuilder->getUniformCStr(fInvZoomVar)); |
147 const char* bounds = args.fBuilder->getUniformCStr(fBoundsVar); | 144 const char* bounds = args.fBuilder->getUniformCStr(fBoundsVar); |
148 fsBuilder->codeAppendf("\t\tvec2 delta = (coord - %s.xy) * %s.zw;\n", bounds
, bounds); | 145 fsBuilder->codeAppendf("\t\tvec2 delta = (coord - %s.xy) * %s.zw;\n", bounds
, bounds); |
149 fsBuilder->codeAppendf("\t\tdelta = min(delta, vec2(1.0, 1.0) - delta);\n"); | 146 fsBuilder->codeAppendf("\t\tdelta = min(delta, vec2(1.0, 1.0) - delta);\n"); |
150 fsBuilder->codeAppendf("\t\tdelta = delta * %s;\n", | 147 fsBuilder->codeAppendf("\t\tdelta = delta * %s;\n", |
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373 | 370 |
374 #ifndef SK_IGNORE_TO_STRING | 371 #ifndef SK_IGNORE_TO_STRING |
375 void SkMagnifierImageFilter::toString(SkString* str) const { | 372 void SkMagnifierImageFilter::toString(SkString* str) const { |
376 str->appendf("SkMagnifierImageFilter: ("); | 373 str->appendf("SkMagnifierImageFilter: ("); |
377 str->appendf("src: (%f,%f,%f,%f) ", | 374 str->appendf("src: (%f,%f,%f,%f) ", |
378 fSrcRect.fLeft, fSrcRect.fTop, fSrcRect.fRight, fSrcRect.fBotto
m); | 375 fSrcRect.fLeft, fSrcRect.fTop, fSrcRect.fRight, fSrcRect.fBotto
m); |
379 str->appendf("inset: %f", fInset); | 376 str->appendf("inset: %f", fInset); |
380 str->append(")"); | 377 str->append(")"); |
381 } | 378 } |
382 #endif | 379 #endif |
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