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SPV: Fix #2293: keep relaxed precision on arg passed to relaxed param

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When arguments are copied to make space for a writable formal parameter,
and the formal parameter is relaxed precision, make the copy also
relaxed precision.
This commit is contained in:
John Kessenich 2020-06-26 09:05:31 -06:00
parent 4df10335e6
commit bf6efd0316
6 changed files with 77 additions and 32 deletions
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2
SPIRV/GlslangToSpv.cpp
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@ -5336,6 +5336,8 @@ spv::Id TGlslangToSpvTraverser::handleUserFunctionCall(const glslang::TIntermAgg
// need space to hold the copy
arg = builder.createVariable(spv::StorageClassFunction,
builder.getContainedTypeId(function->getParamType(a)), "param");
if (function->isReducedPrecisionParam(a))
builder.setPrecision(arg, spv::DecorationRelaxedPrecision);
if (qualifiers[a] == glslang::EvqIn || qualifiers[a] == glslang::EvqInOut) {
// need to copy the input into output space
builder.setAccessChain(lValues[lValueCount]);