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Merge pull request #2716 from greg-lunarg/i2689

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Add support for pragma STDGL invariant(all)
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Greg Fischer 2021-08-01 00:13:10 -06:00 • committed by GitHub
commit e0f3fdf433
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7 changed files with 111 additions and 1 deletions
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39
glslang/MachineIndependent/ParseHelper.cpp
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@ -327,6 +327,16 @@ void TParseContext::setAtomicCounterBlockDefaults(TType& block) const
block.getQualifier().layoutMatrix = ElmRowMajor;
}
void TParseContext::setInvariant(const TSourceLoc& loc, const char* builtin) {
TSymbol* symbol = symbolTable.find(builtin);
if (symbol && symbol->getType().getQualifier().isPipeOutput()) {
if (intermediate.inIoAccessed(builtin))
warn(loc, "changing qualification after use", "invariant", builtin);
TSymbol* csymbol = symbolTable.copyUp(symbol);
csymbol->getWritableType().getQualifier().invariant = true;
}
}
void TParseContext::handlePragma(const TSourceLoc& loc, const TVector<TString>& tokens)
{
#ifndef GLSLANG_WEB
@ -404,8 +414,33 @@ void TParseContext::handlePragma(const TSourceLoc& loc, const TVector<TString>&
intermediate.setUseVariablePointers();
} else if (tokens[0].compare("once") == 0) {
warn(loc, "not implemented", "#pragma once", "");
} else if (tokens[0].compare("glslang_binary_double_output") == 0)
} else if (tokens[0].compare("glslang_binary_double_output") == 0) {
intermediate.setBinaryDoubleOutput();
} else if (spvVersion.spv > 0 && tokens[0].compare("STDGL") == 0 &&
tokens[1].compare("invariant") == 0 && tokens[3].compare("all") == 0) {
intermediate.setInvariantAll();
// Set all builtin out variables invariant if declared
setInvariant(loc, "gl_Position");
setInvariant(loc, "gl_PointSize");
setInvariant(loc, "gl_ClipDistance");
setInvariant(loc, "gl_CullDistance");
setInvariant(loc, "gl_TessLevelOuter");
setInvariant(loc, "gl_TessLevelInner");
setInvariant(loc, "gl_PrimitiveID");
setInvariant(loc, "gl_Layer");
setInvariant(loc, "gl_ViewportIndex");
setInvariant(loc, "gl_FragDepth");
setInvariant(loc, "gl_SampleMask");
setInvariant(loc, "gl_ClipVertex");
setInvariant(loc, "gl_FrontColor");
setInvariant(loc, "gl_BackColor");
setInvariant(loc, "gl_FrontSecondaryColor");
setInvariant(loc, "gl_BackSecondaryColor");
setInvariant(loc, "gl_TexCoord");
setInvariant(loc, "gl_FogFragCoord");
setInvariant(loc, "gl_FragColor");
setInvariant(loc, "gl_FragData");
}
#endif
}
@ -3659,6 +3694,8 @@ void TParseContext::globalQualifierFixCheck(const TSourceLoc& loc, TQualifier& q
profileRequires(loc, ENoProfile, 130, nullptr, "out for stage outputs");
profileRequires(loc, EEsProfile, 300, nullptr, "out for stage outputs");
qualifier.storage = EvqVaryingOut;
if (intermediate.isInvariantAll())
qualifier.invariant = true;
break;
case EvqInOut:
qualifier.storage = EvqVaryingIn;