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Add support for es extension GL_EXT_blend_func_extended

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* Introduces builtin variables gl_SecondaryFragColorEXT and gl_SecondaryFragDataEXT
* Introduces builtin constant gl_MaxDualSourceDrawBuffersEXT
* enables support for layout qualifier "index" in es profile
This commit is contained in:
Pankaj Mistry 2020-04-21 11:33:57 -07:00
parent 2c53baedbb
commit e05cc20ec2
14 changed files with 173 additions and 65 deletions
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22
glslang/MachineIndependent/Initialize.cpp
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@ -6755,6 +6755,18 @@ void TBuiltIns::initialize(const TBuiltInResource &resources, int version, EProf
s.append(builtInConstant);
}
if (version >= 100) {
// GL_EXT_blend_func_extended
snprintf(builtInConstant, maxSize, "const mediump int gl_MaxDualSourceDrawBuffersEXT = %d;", resources.maxDualSourceDrawBuffersEXT);
s.append(builtInConstant);
// this is here instead of with the others in initialize(version, profile) due to the dependence on gl_MaxDualSourceDrawBuffersEXT
if (language == EShLangFragment) {
s.append(
"mediump vec4 gl_SecondaryFragColorEXT;"
"mediump vec4 gl_SecondaryFragDataEXT[gl_MaxDualSourceDrawBuffersEXT];"
"\n");
}
}
} else {
// non-ES profile
@ -9119,6 +9131,16 @@ void TBuiltIns::identifyBuiltIns(int version, EProfile profile, const SpvVersion
symbolTable.insert(*new TVariable(NewPoolTString("gl_FragData"), fragData));
SpecialQualifier("gl_FragData", EvqFragColor, EbvFragData, symbolTable);
}
// GL_EXT_blend_func_extended
if (profile == EEsProfile && version >= 100) {
symbolTable.setVariableExtensions("gl_MaxDualSourceDrawBuffersEXT", 1, &E_GL_EXT_blend_func_extended);
symbolTable.setVariableExtensions("gl_SecondaryFragColorEXT", 1, &E_GL_EXT_blend_func_extended);
symbolTable.setVariableExtensions("gl_SecondaryFragDataEXT", 1, &E_GL_EXT_blend_func_extended);
SpecialQualifier("gl_SecondaryFragColorEXT", EvqVaryingOut, EbvSecondaryFragColorEXT, symbolTable);
SpecialQualifier("gl_SecondaryFragDataEXT", EvqVaryingOut, EbvSecondaryFragDataEXT, symbolTable);
}
break;
case EShLangTessControl: