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HLSL: Smear scalars to match vectors for relational operations.

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Yield a vector relational compare and a vector result.
This commit is contained in:
John Kessenich 2016-08-07 19:14:22 -06:00
parent 267590d452
commit 4583b61e20
6 changed files with 168 additions and 22 deletions
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23
glslang/MachineIndependent/ParseHelper.cpp
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@ -761,13 +761,32 @@ void TParseContext::checkIoArrayConsistency(const TSourceLoc& loc, int requiredS
}
// Handle seeing a binary node with a math operation.
// Returns nullptr if not semantically allowed.
TIntermTyped* TParseContext::handleBinaryMath(const TSourceLoc& loc, const char* str, TOperator op, TIntermTyped* left, TIntermTyped* right)
{
rValueErrorCheck(loc, str, left->getAsTyped());
rValueErrorCheck(loc, str, right->getAsTyped());
TIntermTyped* result = intermediate.addBinaryMath(op, left, right, loc);
if (! result)
bool allowed = true;
switch (op) {
// TODO: Bring more source language-specific checks up from intermediate.cpp
// to the specific parse helpers for that source language.
case EOpLessThan:
case EOpGreaterThan:
case EOpLessThanEqual:
case EOpGreaterThanEqual:
if (! left->isScalar() || ! right->isScalar())
allowed = false;
break;
default:
break;
}
TIntermTyped* result = nullptr;
if (allowed)
result = intermediate.addBinaryMath(op, left, right, loc);
if (result == nullptr)
binaryOpError(loc, str, left->getCompleteString(), right->getCompleteString());
return result;