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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 "GrSwizzle.h" | 8 #include "GrSwizzle.h" |
9 #include "glsl/GrGLSLShaderBuilder.h" | 9 #include "glsl/GrGLSLShaderBuilder.h" |
10 #include "glsl/GrGLSLCaps.h" | 10 #include "glsl/GrGLSLCaps.h" |
11 #include "glsl/GrGLSLShaderVar.h" | 11 #include "glsl/GrGLSLShaderVar.h" |
12 #include "glsl/GrGLSLTextureSampler.h" | 12 #include "glsl/GrGLSLSampler.h" |
13 #include "glsl/GrGLSLProgramBuilder.h" | 13 #include "glsl/GrGLSLProgramBuilder.h" |
14 | 14 |
15 GrGLSLShaderBuilder::GrGLSLShaderBuilder(GrGLSLProgramBuilder* program) | 15 GrGLSLShaderBuilder::GrGLSLShaderBuilder(GrGLSLProgramBuilder* program) |
16 : fProgramBuilder(program) | 16 : fProgramBuilder(program) |
17 , fInputs(GrGLSLProgramBuilder::kVarsPerBlock) | 17 , fInputs(GrGLSLProgramBuilder::kVarsPerBlock) |
18 , fOutputs(GrGLSLProgramBuilder::kVarsPerBlock) | 18 , fOutputs(GrGLSLProgramBuilder::kVarsPerBlock) |
19 , fFeaturesAddedMask(0) | 19 , fFeaturesAddedMask(0) |
20 , fCodeIndex(kCode) | 20 , fCodeIndex(kCode) |
21 , fFinalized(false) { | 21 , fFinalized(false) { |
22 // We push back some dummy pointers which will later become our header | 22 // We push back some dummy pointers which will later become our header |
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50 if (i < argCnt - 1) { | 50 if (i < argCnt - 1) { |
51 this->functions().append(", "); | 51 this->functions().append(", "); |
52 } | 52 } |
53 } | 53 } |
54 this->functions().append(") {\n"); | 54 this->functions().append(") {\n"); |
55 this->functions().append(body); | 55 this->functions().append(body); |
56 this->functions().append("}\n\n"); | 56 this->functions().append("}\n\n"); |
57 } | 57 } |
58 | 58 |
59 void GrGLSLShaderBuilder::appendTextureLookup(SkString* out, | 59 void GrGLSLShaderBuilder::appendTextureLookup(SkString* out, |
60 const GrGLSLTextureSampler& sample
r, | 60 const GrGLSLSampler& sampler, |
61 const char* coordName, | 61 const char* coordName, |
62 GrSLType varyingType) const { | 62 GrSLType varyingType) const { |
63 const GrGLSLCaps* glslCaps = fProgramBuilder->glslCaps(); | 63 const GrGLSLCaps* glslCaps = fProgramBuilder->glslCaps(); |
64 GrGLSLUniformHandler* uniformHandler = fProgramBuilder->uniformHandler(); | 64 GrGLSLUniformHandler* uniformHandler = fProgramBuilder->uniformHandler(); |
65 GrSLType samplerType = uniformHandler->getUniformVariable(sampler.fSamplerUn
iform).getType(); | 65 GrSLType samplerType = uniformHandler->getUniformVariable(sampler.fSamplerUn
iform).getType(); |
66 if (samplerType == kSampler2DRect_GrSLType) { | 66 if (samplerType == kSampler2DRect_GrSLType) { |
67 if (varyingType == kVec2f_GrSLType) { | 67 if (varyingType == kVec2f_GrSLType) { |
68 out->appendf("%s(%s, textureSize(%s) * %s)", | 68 out->appendf("%s(%s, textureSize(%s) * %s)", |
69 GrGLSLTexture2DFunctionName(varyingType, samplerType, | 69 GrGLSLTexture2DFunctionName(varyingType, samplerType, |
70 glslCaps->generation()), | 70 glslCaps->generation()), |
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90 // This refers to any swizzling we may need to get from some backend interna
l format to the | 90 // This refers to any swizzling we may need to get from some backend interna
l format to the |
91 // format used in GrPixelConfig. If this is implemented by the GrGpu object,
then swizzle will | 91 // format used in GrPixelConfig. If this is implemented by the GrGpu object,
then swizzle will |
92 // be rgba. For shader prettiness we omit the swizzle rather than appending
".rgba". | 92 // be rgba. For shader prettiness we omit the swizzle rather than appending
".rgba". |
93 const GrSwizzle& configSwizzle = glslCaps->configTextureSwizzle(sampler.conf
ig()); | 93 const GrSwizzle& configSwizzle = glslCaps->configTextureSwizzle(sampler.conf
ig()); |
94 | 94 |
95 if (configSwizzle != GrSwizzle::RGBA()) { | 95 if (configSwizzle != GrSwizzle::RGBA()) { |
96 out->appendf(".%s", configSwizzle.c_str()); | 96 out->appendf(".%s", configSwizzle.c_str()); |
97 } | 97 } |
98 } | 98 } |
99 | 99 |
100 void GrGLSLShaderBuilder::appendTextureLookup(const GrGLSLTextureSampler& sample
r, | 100 void GrGLSLShaderBuilder::appendTextureLookup(const GrGLSLSampler& sampler, |
101 const char* coordName, | 101 const char* coordName, |
102 GrSLType varyingType) { | 102 GrSLType varyingType) { |
103 this->appendTextureLookup(&this->code(), sampler, coordName, varyingType); | 103 this->appendTextureLookup(&this->code(), sampler, coordName, varyingType); |
104 } | 104 } |
105 | 105 |
106 void GrGLSLShaderBuilder::appendTextureLookupAndModulate(const char* modulation, | 106 void GrGLSLShaderBuilder::appendTextureLookupAndModulate(const char* modulation, |
107 const GrGLSLTextureSamp
ler& sampler, | 107 const GrGLSLSampler& sa
mpler, |
108 const char* coordName, | 108 const char* coordName, |
109 GrSLType varyingType) { | 109 GrSLType varyingType) { |
110 SkString lookup; | 110 SkString lookup; |
111 this->appendTextureLookup(&lookup, sampler, coordName, varyingType); | 111 this->appendTextureLookup(&lookup, sampler, coordName, varyingType); |
112 this->codeAppend((GrGLSLExpr4(modulation) * GrGLSLExpr4(lookup)).c_str()); | 112 this->codeAppend((GrGLSLExpr4(modulation) * GrGLSLExpr4(lookup)).c_str()); |
113 } | 113 } |
114 | 114 |
115 bool GrGLSLShaderBuilder::addFeature(uint32_t featureBit, const char* extensionN
ame) { | 115 bool GrGLSLShaderBuilder::addFeature(uint32_t featureBit, const char* extensionN
ame) { |
116 if (featureBit & fFeaturesAddedMask) { | 116 if (featureBit & fFeaturesAddedMask) { |
117 return false; | 117 return false; |
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167 // append the 'footer' to code | 167 // append the 'footer' to code |
168 this->code().append("}"); | 168 this->code().append("}"); |
169 | 169 |
170 for (int i = 0; i <= fCodeIndex; i++) { | 170 for (int i = 0; i <= fCodeIndex; i++) { |
171 fCompilerStrings[i] = fShaderStrings[i].c_str(); | 171 fCompilerStrings[i] = fShaderStrings[i].c_str(); |
172 fCompilerStringLengths[i] = (int)fShaderStrings[i].size(); | 172 fCompilerStringLengths[i] = (int)fShaderStrings[i].size(); |
173 } | 173 } |
174 | 174 |
175 fFinalized = true; | 175 fFinalized = true; |
176 } | 176 } |
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