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Fix precision propagation around shifts

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Fixes #2541
This commit is contained in:
Greg Fischer 2021-02-26 11:34:51 -07:00
parent 51d672b8a8
commit c176085909
3 changed files with 51 additions and 7 deletions
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15
glslang/MachineIndependent/Intermediate.cpp
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@ -3776,11 +3776,16 @@ void TIntermBinary::updatePrecision()
{
if (getBasicType() == EbtInt || getBasicType() == EbtUint ||
getBasicType() == EbtFloat || getBasicType() == EbtFloat16) {
getQualifier().precision = std::max(right->getQualifier().precision, left->getQualifier().precision);
if (getQualifier().precision != EpqNone) {
left->propagatePrecision(getQualifier().precision);
right->propagatePrecision(getQualifier().precision);
}
if (op == EOpRightShift || op == EOpLeftShift) {
// For shifts get precision from left side only and thus no need to propagate
getQualifier().precision = left->getQualifier().precision;
} else {
getQualifier().precision = std::max(right->getQualifier().precision, left->getQualifier().precision);
if (getQualifier().precision != EpqNone) {
left->propagatePrecision(getQualifier().precision);
right->propagatePrecision(getQualifier().precision);
}
}
}
}