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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 "GrGLShaderBuilder.h" | 8 #include "glsl/GrGLSLShaderBuilder.h" |
| 9 #include "glsl/GrGLSLCaps.h" | 9 #include "glsl/GrGLSLCaps.h" |
| 10 #include "glsl/GrGLSLShaderVar.h" | 10 #include "glsl/GrGLSLShaderVar.h" |
| 11 #include "glsl/GrGLSLTextureSampler.h" | 11 #include "glsl/GrGLSLTextureSampler.h" |
| 12 #include "glsl/GrGLSLProgramBuilder.h" | 12 #include "glsl/GrGLSLProgramBuilder.h" |
| 13 | 13 |
| 14 static void map_swizzle(const char* swizzleMap, const char* swizzle, char* mangl
edSwizzle) { | 14 static void map_swizzle(const char* swizzleMap, const char* swizzle, char* mangl
edSwizzle) { |
| 15 int i; | 15 int i; |
| 16 for (i = 0; '\0' != swizzle[i]; ++i) { | 16 for (i = 0; '\0' != swizzle[i]; ++i) { |
| 17 switch (swizzle[i]) { | 17 switch (swizzle[i]) { |
| 18 case 'r': | 18 case 'r': |
| (...skipping 43 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
| 62 swizzle = mangledSwizzle; | 62 swizzle = mangledSwizzle; |
| 63 } | 63 } |
| 64 } | 64 } |
| 65 | 65 |
| 66 // For shader prettiness we omit the swizzle rather than appending ".rgba". | 66 // For shader prettiness we omit the swizzle rather than appending ".rgba". |
| 67 if (memcmp(swizzle, "rgba", 4)) { | 67 if (memcmp(swizzle, "rgba", 4)) { |
| 68 out->appendf(".%s", swizzle); | 68 out->appendf(".%s", swizzle); |
| 69 } | 69 } |
| 70 } | 70 } |
| 71 | 71 |
| 72 GrGLShaderBuilder::GrGLShaderBuilder(GrGLSLProgramBuilder* program) | 72 GrGLSLShaderBuilder::GrGLSLShaderBuilder(GrGLSLProgramBuilder* program) |
| 73 : fProgramBuilder(program) | 73 : fProgramBuilder(program) |
| 74 , fInputs(GrGLSLProgramBuilder::kVarsPerBlock) | 74 , fInputs(GrGLSLProgramBuilder::kVarsPerBlock) |
| 75 , fOutputs(GrGLSLProgramBuilder::kVarsPerBlock) | 75 , fOutputs(GrGLSLProgramBuilder::kVarsPerBlock) |
| 76 , fFeaturesAddedMask(0) | 76 , fFeaturesAddedMask(0) |
| 77 , fCodeIndex(kCode) | 77 , fCodeIndex(kCode) |
| 78 , fFinalized(false) { | 78 , fFinalized(false) { |
| 79 // We push back some dummy pointers which will later become our header | 79 // We push back some dummy pointers which will later become our header |
| 80 for (int i = 0; i <= kCode; i++) { | 80 for (int i = 0; i <= kCode; i++) { |
| 81 fShaderStrings.push_back(); | 81 fShaderStrings.push_back(); |
| 82 fCompilerStrings.push_back(nullptr); | 82 fCompilerStrings.push_back(nullptr); |
| 83 fCompilerStringLengths.push_back(0); | 83 fCompilerStringLengths.push_back(0); |
| 84 } | 84 } |
| 85 | 85 |
| 86 this->main() = "void main() {"; | 86 this->main() = "void main() {"; |
| 87 } | 87 } |
| 88 | 88 |
| 89 void GrGLShaderBuilder::declAppend(const GrGLSLShaderVar& var) { | 89 void GrGLSLShaderBuilder::declAppend(const GrGLSLShaderVar& var) { |
| 90 SkString tempDecl; | 90 SkString tempDecl; |
| 91 var.appendDecl(fProgramBuilder->glslCaps(), &tempDecl); | 91 var.appendDecl(fProgramBuilder->glslCaps(), &tempDecl); |
| 92 this->codeAppendf("%s;", tempDecl.c_str()); | 92 this->codeAppendf("%s;", tempDecl.c_str()); |
| 93 } | 93 } |
| 94 | 94 |
| 95 void GrGLShaderBuilder::emitFunction(GrSLType returnType, | 95 void GrGLSLShaderBuilder::emitFunction(GrSLType returnType, |
| 96 const char* name, | 96 const char* name, |
| 97 int argCnt, | 97 int argCnt, |
| 98 const GrGLSLShaderVar* args, | 98 const GrGLSLShaderVar* args, |
| 99 const char* body, | 99 const char* body, |
| 100 SkString* outName) { | 100 SkString* outName) { |
| 101 this->functions().append(GrGLSLTypeString(returnType)); | 101 this->functions().append(GrGLSLTypeString(returnType)); |
| 102 fProgramBuilder->nameVariable(outName, '\0', name); | 102 fProgramBuilder->nameVariable(outName, '\0', name); |
| 103 this->functions().appendf(" %s", outName->c_str()); | 103 this->functions().appendf(" %s", outName->c_str()); |
| 104 this->functions().append("("); | 104 this->functions().append("("); |
| 105 for (int i = 0; i < argCnt; ++i) { | 105 for (int i = 0; i < argCnt; ++i) { |
| 106 args[i].appendDecl(fProgramBuilder->glslCaps(), &this->functions()); | 106 args[i].appendDecl(fProgramBuilder->glslCaps(), &this->functions()); |
| 107 if (i < argCnt - 1) { | 107 if (i < argCnt - 1) { |
| 108 this->functions().append(", "); | 108 this->functions().append(", "); |
| 109 } | 109 } |
| 110 } | 110 } |
| 111 this->functions().append(") {\n"); | 111 this->functions().append(") {\n"); |
| 112 this->functions().append(body); | 112 this->functions().append(body); |
| 113 this->functions().append("}\n\n"); | 113 this->functions().append("}\n\n"); |
| 114 } | 114 } |
| 115 | 115 |
| 116 void GrGLShaderBuilder::appendTextureLookup(SkString* out, | 116 void GrGLSLShaderBuilder::appendTextureLookup(SkString* out, |
| 117 const GrGLSLTextureSampler& sampler, | 117 const GrGLSLTextureSampler& sample
r, |
| 118 const char* coordName, | 118 const char* coordName, |
| 119 GrSLType varyingType) const { | 119 GrSLType varyingType) const { |
| 120 append_texture_lookup(out, | 120 append_texture_lookup(out, |
| 121 fProgramBuilder->glslCaps(), | 121 fProgramBuilder->glslCaps(), |
| 122 fProgramBuilder->getUniformCStr(sampler.fSamplerUnifor
m), | 122 fProgramBuilder->getUniformCStr(sampler.fSamplerUnifor
m), |
| 123 coordName, | 123 coordName, |
| 124 sampler.config(), | 124 sampler.config(), |
| 125 sampler.swizzle(), | 125 sampler.swizzle(), |
| 126 varyingType); | 126 varyingType); |
| 127 } | 127 } |
| 128 | 128 |
| 129 void GrGLShaderBuilder::appendTextureLookup(const GrGLSLTextureSampler& sampler, | 129 void GrGLSLShaderBuilder::appendTextureLookup(const GrGLSLTextureSampler& sample
r, |
| 130 const char* coordName, | 130 const char* coordName, |
| 131 GrSLType varyingType) { | 131 GrSLType varyingType) { |
| 132 this->appendTextureLookup(&this->code(), sampler, coordName, varyingType); | 132 this->appendTextureLookup(&this->code(), sampler, coordName, varyingType); |
| 133 } | 133 } |
| 134 | 134 |
| 135 void GrGLShaderBuilder::appendTextureLookupAndModulate(const char* modulation, | 135 void GrGLSLShaderBuilder::appendTextureLookupAndModulate(const char* modulation, |
| 136 const GrGLSLTextureSample
r& sampler, | 136 const GrGLSLTextureSamp
ler& sampler, |
| 137 const char* coordName, | 137 const char* coordName, |
| 138 GrSLType varyingType) { | 138 GrSLType varyingType) { |
| 139 SkString lookup; | 139 SkString lookup; |
| 140 this->appendTextureLookup(&lookup, sampler, coordName, varyingType); | 140 this->appendTextureLookup(&lookup, sampler, coordName, varyingType); |
| 141 this->codeAppend((GrGLSLExpr4(modulation) * GrGLSLExpr4(lookup)).c_str()); | 141 this->codeAppend((GrGLSLExpr4(modulation) * GrGLSLExpr4(lookup)).c_str()); |
| 142 } | 142 } |
| 143 | 143 |
| 144 void GrGLShaderBuilder::addFeature(uint32_t featureBit, const char* extensionNam
e) { | 144 void GrGLSLShaderBuilder::addFeature(uint32_t featureBit, const char* extensionN
ame) { |
| 145 if (!(featureBit & fFeaturesAddedMask)) { | 145 if (!(featureBit & fFeaturesAddedMask)) { |
| 146 this->extensions().appendf("#extension %s: require\n", extensionName); | 146 this->extensions().appendf("#extension %s: require\n", extensionName); |
| 147 fFeaturesAddedMask |= featureBit; | 147 fFeaturesAddedMask |= featureBit; |
| 148 } | 148 } |
| 149 } | 149 } |
| 150 | 150 |
| 151 void GrGLShaderBuilder::appendDecls(const VarArray& vars, SkString* out) const { | 151 void GrGLSLShaderBuilder::appendDecls(const VarArray& vars, SkString* out) const
{ |
| 152 for (int i = 0; i < vars.count(); ++i) { | 152 for (int i = 0; i < vars.count(); ++i) { |
| 153 vars[i].appendDecl(fProgramBuilder->glslCaps(), out); | 153 vars[i].appendDecl(fProgramBuilder->glslCaps(), out); |
| 154 out->append(";\n"); | 154 out->append(";\n"); |
| 155 } | 155 } |
| 156 } | 156 } |
| 157 | 157 |
| 158 void GrGLShaderBuilder::addLayoutQualifier(const char* param, InterfaceQualifier
interface) { | 158 void GrGLSLShaderBuilder::addLayoutQualifier(const char* param, InterfaceQualifi
er interface) { |
| 159 SkASSERT(fProgramBuilder->glslCaps()->generation() >= k330_GrGLSLGeneration
|| | 159 SkASSERT(fProgramBuilder->glslCaps()->generation() >= k330_GrGLSLGeneration
|| |
| 160 fProgramBuilder->glslCaps()->mustEnableAdvBlendEqs()); | 160 fProgramBuilder->glslCaps()->mustEnableAdvBlendEqs()); |
| 161 fLayoutParams[interface].push_back() = param; | 161 fLayoutParams[interface].push_back() = param; |
| 162 } | 162 } |
| 163 | 163 |
| 164 void GrGLShaderBuilder::compileAndAppendLayoutQualifiers() { | 164 void GrGLSLShaderBuilder::compileAndAppendLayoutQualifiers() { |
| 165 static const char* interfaceQualifierNames[] = { | 165 static const char* interfaceQualifierNames[] = { |
| 166 "out" | 166 "out" |
| 167 }; | 167 }; |
| 168 | 168 |
| 169 for (int interface = 0; interface <= kLastInterfaceQualifier; ++interface) { | 169 for (int interface = 0; interface <= kLastInterfaceQualifier; ++interface) { |
| 170 const SkTArray<SkString>& params = fLayoutParams[interface]; | 170 const SkTArray<SkString>& params = fLayoutParams[interface]; |
| 171 if (params.empty()) { | 171 if (params.empty()) { |
| 172 continue; | 172 continue; |
| 173 } | 173 } |
| 174 this->layoutQualifiers().appendf("layout(%s", params[0].c_str()); | 174 this->layoutQualifiers().appendf("layout(%s", params[0].c_str()); |
| 175 for (int i = 1; i < params.count(); ++i) { | 175 for (int i = 1; i < params.count(); ++i) { |
| 176 this->layoutQualifiers().appendf(", %s", params[i].c_str()); | 176 this->layoutQualifiers().appendf(", %s", params[i].c_str()); |
| 177 } | 177 } |
| 178 this->layoutQualifiers().appendf(") %s;\n", interfaceQualifierNames[inte
rface]); | 178 this->layoutQualifiers().appendf(") %s;\n", interfaceQualifierNames[inte
rface]); |
| 179 } | 179 } |
| 180 | 180 |
| 181 GR_STATIC_ASSERT(0 == GrGLShaderBuilder::kOut_InterfaceQualifier); | 181 GR_STATIC_ASSERT(0 == GrGLSLShaderBuilder::kOut_InterfaceQualifier); |
| 182 GR_STATIC_ASSERT(SK_ARRAY_COUNT(interfaceQualifierNames) == kLastInterfaceQu
alifier + 1); | 182 GR_STATIC_ASSERT(SK_ARRAY_COUNT(interfaceQualifierNames) == kLastInterfaceQu
alifier + 1); |
| 183 } | 183 } |
| 184 | 184 |
| 185 void GrGLShaderBuilder::finalize(uint32_t visibility) { | 185 void GrGLSLShaderBuilder::finalize(uint32_t visibility) { |
| 186 SkASSERT(!fFinalized); | 186 SkASSERT(!fFinalized); |
| 187 this->versionDecl() = fProgramBuilder->glslCaps()->versionDeclString(); | 187 this->versionDecl() = fProgramBuilder->glslCaps()->versionDeclString(); |
| 188 this->compileAndAppendLayoutQualifiers(); | 188 this->compileAndAppendLayoutQualifiers(); |
| 189 SkASSERT(visibility); | 189 SkASSERT(visibility); |
| 190 fProgramBuilder->appendUniformDecls((GrGLSLProgramBuilder::ShaderVisibility)
visibility, | 190 fProgramBuilder->appendUniformDecls((GrGLSLProgramBuilder::ShaderVisibility)
visibility, |
| 191 &this->uniforms()); | 191 &this->uniforms()); |
| 192 this->appendDecls(fInputs, &this->inputs()); | 192 this->appendDecls(fInputs, &this->inputs()); |
| 193 // We should not have any outputs in the fragment shader when using version
1.10 | 193 // We should not have any outputs in the fragment shader when using version
1.10 |
| 194 SkASSERT(GrGLSLProgramBuilder::kFragment_Visibility != visibility || | 194 SkASSERT(GrGLSLProgramBuilder::kFragment_Visibility != visibility || |
| 195 k110_GrGLSLGeneration != fProgramBuilder->glslCaps()->generation()
|| | 195 k110_GrGLSLGeneration != fProgramBuilder->glslCaps()->generation()
|| |
| 196 fOutputs.empty()); | 196 fOutputs.empty()); |
| 197 this->appendDecls(fOutputs, &this->outputs()); | 197 this->appendDecls(fOutputs, &this->outputs()); |
| 198 this->onFinalize(); | 198 this->onFinalize(); |
| 199 // append the 'footer' to code | 199 // append the 'footer' to code |
| 200 this->code().append("}"); | 200 this->code().append("}"); |
| 201 | 201 |
| 202 for (int i = 0; i <= fCodeIndex; i++) { | 202 for (int i = 0; i <= fCodeIndex; i++) { |
| 203 fCompilerStrings[i] = fShaderStrings[i].c_str(); | 203 fCompilerStrings[i] = fShaderStrings[i].c_str(); |
| 204 fCompilerStringLengths[i] = (int)fShaderStrings[i].size(); | 204 fCompilerStringLengths[i] = (int)fShaderStrings[i].size(); |
| 205 } | 205 } |
| 206 | 206 |
| 207 fFinalized = true; | 207 fFinalized = true; |
| 208 } | 208 } |
| 209 | 209 |
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