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Front-end: propagate specialization-constness through conversions and swizzles.

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This commit is contained in:
John Kessenich 2016-03-20 18:45:23 -06:00
parent a5845766e0
commit 6d2b07dc39
3 changed files with 15 additions and 2 deletions
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6
glslang/MachineIndependent/ParseHelper.cpp
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@ -820,6 +820,9 @@ TIntermTyped* TParseContext::handleDotDereference(const TSourceLoc& loc, TInterm
return result;
else {
TType type(base->getBasicType(), EvqTemporary, fields.num);
// Swizzle operations propagate specialization-constantness
if (base->getQualifier().isSpecConstant())
type.getQualifier().makeSpecConstant();
return addConstructor(loc, base, type, mapTypeToConstructorOp(type));
}
}
@ -837,6 +840,9 @@ TIntermTyped* TParseContext::handleDotDereference(const TSourceLoc& loc, TInterm
result = intermediate.addIndex(EOpVectorSwizzle, base, index, loc);
result->setType(TType(base->getBasicType(), EvqTemporary, base->getType().getQualifier().precision, (int) vectorString.size()));
}
// Swizzle operations propagate specialization-constantness
if (base->getType().getQualifier().isSpecConstant())
result->getWritableType().getQualifier().makeSpecConstant();
}
} else if (base->getBasicType() == EbtStruct || base->getBasicType() == EbtBlock) {
const TTypeList* fields = base->getType().getStruct();