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Side by Side Diff: src/gpu/glsl/GrGLSLShaderBuilder.cpp

Issue 1438003003: Move all ShaderBuilder files to GLSL (Closed) Base URL: https://skia.googlesource.com/skia.git@glslProgBuild
Patch Set: nits Created 5 years, 1 month ago
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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
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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