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1 /* | 1 /* |
2 * Copyright 2012 Google Inc. | 2 * Copyright 2012 Google Inc. |
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 "GrConvolutionEffect.h" | 8 #include "GrConvolutionEffect.h" |
9 #include "glsl/GrGLSLFragmentProcessor.h" | 9 #include "glsl/GrGLSLFragmentProcessor.h" |
10 #include "glsl/GrGLSLFragmentShaderBuilder.h" | 10 #include "glsl/GrGLSLFragmentShaderBuilder.h" |
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53 "ImageIncrement"); | 53 "ImageIncrement"); |
54 if (this->useBounds()) { | 54 if (this->useBounds()) { |
55 fBoundsUni = args.fBuilder->addUniform(GrGLSLProgramBuilder::kFragment_V
isibility, | 55 fBoundsUni = args.fBuilder->addUniform(GrGLSLProgramBuilder::kFragment_V
isibility, |
56 kVec2f_GrSLType, kDefault_GrSLPrecision
, | 56 kVec2f_GrSLType, kDefault_GrSLPrecision
, |
57 "Bounds"); | 57 "Bounds"); |
58 } | 58 } |
59 fKernelUni = args.fBuilder->addUniformArray(GrGLSLProgramBuilder::kFragment_
Visibility, | 59 fKernelUni = args.fBuilder->addUniformArray(GrGLSLProgramBuilder::kFragment_
Visibility, |
60 kFloat_GrSLType, kDefault_GrSLPrecisio
n, | 60 kFloat_GrSLType, kDefault_GrSLPrecisio
n, |
61 "Kernel", this->width()); | 61 "Kernel", this->width()); |
62 | 62 |
63 GrGLSLFragmentBuilder* fsBuilder = args.fBuilder->getFragmentShaderBuilder()
; | 63 GrGLSLFragmentBuilder* fragBuilder = args.fFragBuilder; |
64 SkString coords2D = fsBuilder->ensureFSCoords2D(args.fCoords, 0); | 64 SkString coords2D = fragBuilder->ensureFSCoords2D(args.fCoords, 0); |
65 | 65 |
66 fsBuilder->codeAppendf("\t\t%s = vec4(0, 0, 0, 0);\n", args.fOutputColor); | 66 fragBuilder->codeAppendf("\t\t%s = vec4(0, 0, 0, 0);\n", args.fOutputColor); |
67 | 67 |
68 int width = this->width(); | 68 int width = this->width(); |
69 const GrGLSLShaderVar& kernel = args.fBuilder->getUniformVariable(fKernelUni
); | 69 const GrGLSLShaderVar& kernel = args.fBuilder->getUniformVariable(fKernelUni
); |
70 const char* imgInc = args.fBuilder->getUniformCStr(fImageIncrementUni); | 70 const char* imgInc = args.fBuilder->getUniformCStr(fImageIncrementUni); |
71 | 71 |
72 fsBuilder->codeAppendf("\t\tvec2 coord = %s - %d.0 * %s;\n", coords2D.c_str(
), fRadius, imgInc); | 72 fragBuilder->codeAppendf("\t\tvec2 coord = %s - %d.0 * %s;\n", coords2D.c_st
r(), fRadius, imgInc); |
73 | 73 |
74 // Manually unroll loop because some drivers don't; yields 20-30% speedup. | 74 // Manually unroll loop because some drivers don't; yields 20-30% speedup. |
75 for (int i = 0; i < width; i++) { | 75 for (int i = 0; i < width; i++) { |
76 SkString index; | 76 SkString index; |
77 SkString kernelIndex; | 77 SkString kernelIndex; |
78 index.appendS32(i); | 78 index.appendS32(i); |
79 kernel.appendArrayAccess(index.c_str(), &kernelIndex); | 79 kernel.appendArrayAccess(index.c_str(), &kernelIndex); |
80 | 80 |
81 if (this->useBounds()) { | 81 if (this->useBounds()) { |
82 // We used to compute a bool indicating whether we're in bounds or n
ot, cast it to a | 82 // We used to compute a bool indicating whether we're in bounds or n
ot, cast it to a |
83 // float, and then mul weight*texture_sample by the float. However,
the Adreno 430 seems | 83 // float, and then mul weight*texture_sample by the float. However,
the Adreno 430 seems |
84 // to have a bug that caused corruption. | 84 // to have a bug that caused corruption. |
85 const char* bounds = args.fBuilder->getUniformCStr(fBoundsUni); | 85 const char* bounds = args.fBuilder->getUniformCStr(fBoundsUni); |
86 const char* component = this->direction() == Gr1DKernelEffect::kY_Di
rection ? "y" : "x"; | 86 const char* component = this->direction() == Gr1DKernelEffect::kY_Di
rection ? "y" : "x"; |
87 fsBuilder->codeAppendf("if (coord.%s >= %s.x && coord.%s <= %s.y) {"
, | 87 fragBuilder->codeAppendf("if (coord.%s >= %s.x && coord.%s <= %s.y)
{", |
88 component, bounds, component, bounds); | 88 component, bounds, component, bounds); |
89 } | 89 } |
90 fsBuilder->codeAppendf("\t\t%s += ", args.fOutputColor); | 90 fragBuilder->codeAppendf("\t\t%s += ", args.fOutputColor); |
91 fsBuilder->appendTextureLookup(args.fSamplers[0], "coord"); | 91 fragBuilder->appendTextureLookup(args.fSamplers[0], "coord"); |
92 fsBuilder->codeAppendf(" * %s;\n", kernelIndex.c_str()); | 92 fragBuilder->codeAppendf(" * %s;\n", kernelIndex.c_str()); |
93 if (this->useBounds()) { | 93 if (this->useBounds()) { |
94 fsBuilder->codeAppend("}"); | 94 fragBuilder->codeAppend("}"); |
95 } | 95 } |
96 fsBuilder->codeAppendf("\t\tcoord += %s;\n", imgInc); | 96 fragBuilder->codeAppendf("\t\tcoord += %s;\n", imgInc); |
97 } | 97 } |
98 | 98 |
99 SkString modulate; | 99 SkString modulate; |
100 GrGLSLMulVarBy4f(&modulate, args.fOutputColor, args.fInputColor); | 100 GrGLSLMulVarBy4f(&modulate, args.fOutputColor, args.fInputColor); |
101 fsBuilder->codeAppend(modulate.c_str()); | 101 fragBuilder->codeAppend(modulate.c_str()); |
102 } | 102 } |
103 | 103 |
104 void GrGLConvolutionEffect::onSetData(const GrGLSLProgramDataManager& pdman, | 104 void GrGLConvolutionEffect::onSetData(const GrGLSLProgramDataManager& pdman, |
105 const GrProcessor& processor) { | 105 const GrProcessor& processor) { |
106 const GrConvolutionEffect& conv = processor.cast<GrConvolutionEffect>(); | 106 const GrConvolutionEffect& conv = processor.cast<GrConvolutionEffect>(); |
107 GrTexture& texture = *conv.texture(0); | 107 GrTexture& texture = *conv.texture(0); |
108 // the code we generated was for a specific kernel radius | 108 // the code we generated was for a specific kernel radius |
109 SkASSERT(conv.radius() == fRadius); | 109 SkASSERT(conv.radius() == fRadius); |
110 float imageIncrement[2] = { 0 }; | 110 float imageIncrement[2] = { 0 }; |
111 float ySign = texture.origin() != kTopLeft_GrSurfaceOrigin ? 1.0f : -1.0f; | 111 float ySign = texture.origin() != kTopLeft_GrSurfaceOrigin ? 1.0f : -1.0f; |
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231 } | 231 } |
232 | 232 |
233 bool useBounds = d->fRandom->nextBool(); | 233 bool useBounds = d->fRandom->nextBool(); |
234 return GrConvolutionEffect::Create(d->fTextures[texIdx], | 234 return GrConvolutionEffect::Create(d->fTextures[texIdx], |
235 dir, | 235 dir, |
236 radius, | 236 radius, |
237 kernel, | 237 kernel, |
238 useBounds, | 238 useBounds, |
239 bounds); | 239 bounds); |
240 } | 240 } |
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