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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 "gl/builders/GrGLProgramBuilder.h" |
8 #include "GrConvolutionEffect.h" | 9 #include "GrConvolutionEffect.h" |
9 #include "gl/GrGLEffect.h" | 10 #include "gl/GrGLEffect.h" |
10 #include "gl/GrGLShaderBuilder.h" | |
11 #include "gl/GrGLSL.h" | 11 #include "gl/GrGLSL.h" |
12 #include "gl/GrGLTexture.h" | 12 #include "gl/GrGLTexture.h" |
13 #include "GrTBackendEffectFactory.h" | 13 #include "GrTBackendEffectFactory.h" |
14 | 14 |
15 // For brevity | 15 // For brevity |
16 typedef GrGLProgramDataManager::UniformHandle UniformHandle; | 16 typedef GrGLProgramDataManager::UniformHandle UniformHandle; |
17 | 17 |
18 class GrGLConvolutionEffect : public GrGLEffect { | 18 class GrGLConvolutionEffect : public GrGLEffect { |
19 public: | 19 public: |
20 GrGLConvolutionEffect(const GrBackendEffectFactory&, const GrDrawEffect&); | 20 GrGLConvolutionEffect(const GrBackendEffectFactory&, const GrDrawEffect&); |
21 | 21 |
22 virtual void emitCode(GrGLShaderBuilder*, | 22 virtual void emitCode(GrGLProgramBuilder*, |
23 const GrDrawEffect&, | 23 const GrDrawEffect&, |
24 const GrEffectKey&, | 24 const GrEffectKey&, |
25 const char* outputColor, | 25 const char* outputColor, |
26 const char* inputColor, | 26 const char* inputColor, |
27 const TransformedCoordsArray&, | 27 const TransformedCoordsArray&, |
28 const TextureSamplerArray&) SK_OVERRIDE; | 28 const TextureSamplerArray&) SK_OVERRIDE; |
29 | 29 |
30 virtual void setData(const GrGLProgramDataManager& pdman, const GrDrawEffect
&) SK_OVERRIDE; | 30 virtual void setData(const GrGLProgramDataManager& pdman, const GrDrawEffect
&) SK_OVERRIDE; |
31 | 31 |
32 static inline void GenKey(const GrDrawEffect&, const GrGLCaps&, GrEffectKeyB
uilder*); | 32 static inline void GenKey(const GrDrawEffect&, const GrGLCaps&, GrEffectKeyB
uilder*); |
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48 | 48 |
49 GrGLConvolutionEffect::GrGLConvolutionEffect(const GrBackendEffectFactory& facto
ry, | 49 GrGLConvolutionEffect::GrGLConvolutionEffect(const GrBackendEffectFactory& facto
ry, |
50 const GrDrawEffect& drawEffect) | 50 const GrDrawEffect& drawEffect) |
51 : INHERITED(factory) { | 51 : INHERITED(factory) { |
52 const GrConvolutionEffect& c = drawEffect.castEffect<GrConvolutionEffect>(); | 52 const GrConvolutionEffect& c = drawEffect.castEffect<GrConvolutionEffect>(); |
53 fRadius = c.radius(); | 53 fRadius = c.radius(); |
54 fUseBounds = c.useBounds(); | 54 fUseBounds = c.useBounds(); |
55 fDirection = c.direction(); | 55 fDirection = c.direction(); |
56 } | 56 } |
57 | 57 |
58 void GrGLConvolutionEffect::emitCode(GrGLShaderBuilder* builder, | 58 void GrGLConvolutionEffect::emitCode(GrGLProgramBuilder* builder, |
59 const GrDrawEffect&, | 59 const GrDrawEffect&, |
60 const GrEffectKey& key, | 60 const GrEffectKey& key, |
61 const char* outputColor, | 61 const char* outputColor, |
62 const char* inputColor, | 62 const char* inputColor, |
63 const TransformedCoordsArray& coords, | 63 const TransformedCoordsArray& coords, |
64 const TextureSamplerArray& samplers) { | 64 const TextureSamplerArray& samplers) { |
65 SkString coords2D = builder->ensureFSCoords2D(coords, 0); | 65 fImageIncrementUni = builder->addUniform(GrGLProgramBuilder::kFragment_Visib
ility, |
66 fImageIncrementUni = builder->addUniform(GrGLShaderBuilder::kFragment_Visibi
lity, | |
67 kVec2f_GrSLType, "ImageIncrement"); | 66 kVec2f_GrSLType, "ImageIncrement"); |
68 if (this->useBounds()) { | 67 if (this->useBounds()) { |
69 fBoundsUni = builder->addUniform(GrGLShaderBuilder::kFragment_Visibility
, | 68 fBoundsUni = builder->addUniform(GrGLProgramBuilder::kFragment_Visibilit
y, |
70 kVec2f_GrSLType, "Bounds"); | 69 kVec2f_GrSLType, "Bounds"); |
71 } | 70 } |
72 fKernelUni = builder->addUniformArray(GrGLShaderBuilder::kFragment_Visibilit
y, | 71 fKernelUni = builder->addUniformArray(GrGLProgramBuilder::kFragment_Visibili
ty, |
73 kFloat_GrSLType, "Kernel", this->width
()); | 72 kFloat_GrSLType, "Kernel", this->width
()); |
74 | 73 |
75 builder->fsCodeAppendf("\t\t%s = vec4(0, 0, 0, 0);\n", outputColor); | 74 GrGLFragmentShaderBuilder* fsBuilder = builder->getFragmentShaderBuilder(); |
| 75 SkString coords2D = fsBuilder->ensureFSCoords2D(coords, 0); |
| 76 |
| 77 fsBuilder->codeAppendf("\t\t%s = vec4(0, 0, 0, 0);\n", outputColor); |
76 | 78 |
77 int width = this->width(); | 79 int width = this->width(); |
78 const GrGLShaderVar& kernel = builder->getUniformVariable(fKernelUni); | 80 const GrGLShaderVar& kernel = builder->getUniformVariable(fKernelUni); |
79 const char* imgInc = builder->getUniformCStr(fImageIncrementUni); | 81 const char* imgInc = builder->getUniformCStr(fImageIncrementUni); |
80 | 82 |
81 builder->fsCodeAppendf("\t\tvec2 coord = %s - %d.0 * %s;\n", coords2D.c_str(
), fRadius, imgInc); | 83 fsBuilder->codeAppendf("\t\tvec2 coord = %s - %d.0 * %s;\n", coords2D.c_str(
), fRadius, imgInc); |
82 | 84 |
83 // Manually unroll loop because some drivers don't; yields 20-30% speedup. | 85 // Manually unroll loop because some drivers don't; yields 20-30% speedup. |
84 for (int i = 0; i < width; i++) { | 86 for (int i = 0; i < width; i++) { |
85 SkString index; | 87 SkString index; |
86 SkString kernelIndex; | 88 SkString kernelIndex; |
87 index.appendS32(i); | 89 index.appendS32(i); |
88 kernel.appendArrayAccess(index.c_str(), &kernelIndex); | 90 kernel.appendArrayAccess(index.c_str(), &kernelIndex); |
89 builder->fsCodeAppendf("\t\t%s += ", outputColor); | 91 fsBuilder->codeAppendf("\t\t%s += ", outputColor); |
90 builder->fsAppendTextureLookup(samplers[0], "coord"); | 92 fsBuilder->appendTextureLookup(samplers[0], "coord"); |
91 if (this->useBounds()) { | 93 if (this->useBounds()) { |
92 const char* bounds = builder->getUniformCStr(fBoundsUni); | 94 const char* bounds = builder->getUniformCStr(fBoundsUni); |
93 const char* component = this->direction() == Gr1DKernelEffect::kY_Di
rection ? "y" : "x"; | 95 const char* component = this->direction() == Gr1DKernelEffect::kY_Di
rection ? "y" : "x"; |
94 builder->fsCodeAppendf(" * float(coord.%s >= %s.x && coord.%s <= %s.
y)", | 96 fsBuilder->codeAppendf(" * float(coord.%s >= %s.x && coord.%s <= %s.
y)", |
95 component, bounds, component, bounds); | 97 component, bounds, component, bounds); |
96 } | 98 } |
97 builder->fsCodeAppendf(" * %s;\n", kernelIndex.c_str()); | 99 fsBuilder->codeAppendf(" * %s;\n", kernelIndex.c_str()); |
98 builder->fsCodeAppendf("\t\tcoord += %s;\n", imgInc); | 100 fsBuilder->codeAppendf("\t\tcoord += %s;\n", imgInc); |
99 } | 101 } |
100 | 102 |
101 SkString modulate; | 103 SkString modulate; |
102 GrGLSLMulVarBy4f(&modulate, 2, outputColor, inputColor); | 104 GrGLSLMulVarBy4f(&modulate, 2, outputColor, inputColor); |
103 builder->fsCodeAppend(modulate.c_str()); | 105 fsBuilder->codeAppend(modulate.c_str()); |
104 } | 106 } |
105 | 107 |
106 void GrGLConvolutionEffect::setData(const GrGLProgramDataManager& pdman, | 108 void GrGLConvolutionEffect::setData(const GrGLProgramDataManager& pdman, |
107 const GrDrawEffect& drawEffect) { | 109 const GrDrawEffect& drawEffect) { |
108 const GrConvolutionEffect& conv = drawEffect.castEffect<GrConvolutionEffect>
(); | 110 const GrConvolutionEffect& conv = drawEffect.castEffect<GrConvolutionEffect>
(); |
109 GrTexture& texture = *conv.texture(0); | 111 GrTexture& texture = *conv.texture(0); |
110 // the code we generated was for a specific kernel radius | 112 // the code we generated was for a specific kernel radius |
111 SkASSERT(conv.radius() == fRadius); | 113 SkASSERT(conv.radius() == fRadius); |
112 float imageIncrement[2] = { 0 }; | 114 float imageIncrement[2] = { 0 }; |
113 float ySign = texture.origin() != kTopLeft_GrSurfaceOrigin ? 1.0f : -1.0f; | 115 float ySign = texture.origin() != kTopLeft_GrSurfaceOrigin ? 1.0f : -1.0f; |
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230 } | 232 } |
231 | 233 |
232 bool useBounds = random->nextBool(); | 234 bool useBounds = random->nextBool(); |
233 return GrConvolutionEffect::Create(textures[texIdx], | 235 return GrConvolutionEffect::Create(textures[texIdx], |
234 dir, | 236 dir, |
235 radius, | 237 radius, |
236 kernel, | 238 kernel, |
237 useBounds, | 239 useBounds, |
238 bounds); | 240 bounds); |
239 } | 241 } |
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