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1 /* | 1 /* |
2 * Copyright 2014 Google Inc. | 2 * Copyright 2014 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 "GrYUVtoRGBEffect.h" | 8 #include "GrYUVtoRGBEffect.h" |
9 | 9 |
10 #include "GrCoordTransform.h" | 10 #include "GrCoordTransform.h" |
11 #include "GrInvariantOutput.h" | 11 #include "GrInvariantOutput.h" |
12 #include "GrProcessor.h" | 12 #include "GrProcessor.h" |
13 #include "gl/GrGLFragmentProcessor.h" | 13 #include "gl/GrGLFragmentProcessor.h" |
14 #include "gl/builders/GrGLProgramBuilder.h" | 14 #include "glsl/GrGLSLFragmentShaderBuilder.h" |
| 15 #include "glsl/GrGLSLProgramBuilder.h" |
15 #include "glsl/GrGLSLProgramDataManager.h" | 16 #include "glsl/GrGLSLProgramDataManager.h" |
16 | 17 |
17 namespace { | 18 namespace { |
18 | 19 |
19 class YUVtoRGBEffect : public GrFragmentProcessor { | 20 class YUVtoRGBEffect : public GrFragmentProcessor { |
20 public: | 21 public: |
21 static GrFragmentProcessor* Create(GrTexture* yTexture, GrTexture* uTexture, | 22 static GrFragmentProcessor* Create(GrTexture* yTexture, GrTexture* uTexture, |
22 GrTexture* vTexture, const SkISize sizes[
3], | 23 GrTexture* vTexture, const SkISize sizes[
3], |
23 SkYUVColorSpace colorSpace) { | 24 SkYUVColorSpace colorSpace) { |
24 SkScalar w[3], h[3]; | 25 SkScalar w[3], h[3]; |
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56 static const float kJPEGConversionMatrix[16]; | 57 static const float kJPEGConversionMatrix[16]; |
57 static const float kRec601ConversionMatrix[16]; | 58 static const float kRec601ConversionMatrix[16]; |
58 static const float kRec709ConversionMatrix[16]; | 59 static const float kRec709ConversionMatrix[16]; |
59 | 60 |
60 // this class always generates the same code. | 61 // this class always generates the same code. |
61 static void GenKey(const GrProcessor&, const GrGLSLCaps&, GrProcessorKey
Builder*) {} | 62 static void GenKey(const GrProcessor&, const GrGLSLCaps&, GrProcessorKey
Builder*) {} |
62 | 63 |
63 GLProcessor(const GrProcessor&) {} | 64 GLProcessor(const GrProcessor&) {} |
64 | 65 |
65 virtual void emitCode(EmitArgs& args) override { | 66 virtual void emitCode(EmitArgs& args) override { |
66 GrGLFragmentBuilder* fsBuilder = args.fBuilder->getFragmentShaderBui
lder(); | 67 GrGLSLFragmentBuilder* fsBuilder = args.fBuilder->getFragmentShaderB
uilder(); |
67 | 68 |
68 const char* yuvMatrix = nullptr; | 69 const char* yuvMatrix = nullptr; |
69 fMatrixUni = args.fBuilder->addUniform(GrGLProgramBuilder::kFragment
_Visibility, | 70 fMatrixUni = args.fBuilder->addUniform(GrGLSLProgramBuilder::kFragme
nt_Visibility, |
70 kMat44f_GrSLType, kDefault_GrSLPrec
ision, | 71 kMat44f_GrSLType, kDefault_Gr
SLPrecision, |
71 "YUVMatrix", &yuvMatrix); | 72 "YUVMatrix", &yuvMatrix); |
72 fsBuilder->codeAppendf("\t%s = vec4(\n\t\t", args.fOutputColor); | 73 fsBuilder->codeAppendf("\t%s = vec4(\n\t\t", args.fOutputColor); |
73 fsBuilder->appendTextureLookup(args.fSamplers[0], args.fCoords[0].c_
str(), | 74 fsBuilder->appendTextureLookup(args.fSamplers[0], args.fCoords[0].c_
str(), |
74 args.fCoords[0].getType()); | 75 args.fCoords[0].getType()); |
75 fsBuilder->codeAppend(".r,\n\t\t"); | 76 fsBuilder->codeAppend(".r,\n\t\t"); |
76 fsBuilder->appendTextureLookup(args.fSamplers[1], args.fCoords[1].c_
str(), | 77 fsBuilder->appendTextureLookup(args.fSamplers[1], args.fCoords[1].c_
str(), |
77 args.fCoords[1].getType()); | 78 args.fCoords[1].getType()); |
78 fsBuilder->codeAppend(".r,\n\t\t"); | 79 fsBuilder->codeAppend(".r,\n\t\t"); |
79 fsBuilder->appendTextureLookup(args.fSamplers[2], args.fCoords[2].c_
str(), | 80 fsBuilder->appendTextureLookup(args.fSamplers[2], args.fCoords[2].c_
str(), |
80 args.fCoords[2].getType()); | 81 args.fCoords[2].getType()); |
81 fsBuilder->codeAppendf(".r,\n\t\t1.0) * %s;\n", yuvMatrix); | 82 fsBuilder->codeAppendf(".r,\n\t\t1.0) * %s;\n", yuvMatrix); |
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171 } | 172 } |
172 | 173 |
173 ////////////////////////////////////////////////////////////////////////////// | 174 ////////////////////////////////////////////////////////////////////////////// |
174 | 175 |
175 GrFragmentProcessor* | 176 GrFragmentProcessor* |
176 GrYUVtoRGBEffect::Create(GrTexture* yTexture, GrTexture* uTexture, GrTexture* vT
exture, | 177 GrYUVtoRGBEffect::Create(GrTexture* yTexture, GrTexture* uTexture, GrTexture* vT
exture, |
177 const SkISize sizes[3], SkYUVColorSpace colorSpace) { | 178 const SkISize sizes[3], SkYUVColorSpace colorSpace) { |
178 SkASSERT(yTexture && uTexture && vTexture && sizes); | 179 SkASSERT(yTexture && uTexture && vTexture && sizes); |
179 return YUVtoRGBEffect::Create(yTexture, uTexture, vTexture, sizes, colorSpac
e); | 180 return YUVtoRGBEffect::Create(yTexture, uTexture, vTexture, sizes, colorSpac
e); |
180 } | 181 } |
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