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Add more error checks for interpolateAtVertexAMD()

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This commit is contained in:
Rex Xu 2018-03-06 15:01:40 +08:00
parent c6c80a6e48
commit 4f5b99e37e
2 changed files with 23 additions and 0 deletions
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17
glslang/MachineIndependent/ParseHelper.cpp
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@ -1608,6 +1608,23 @@ void TParseContext::builtInOpCheck(const TSourceLoc& loc, const TFunction& fnCan
if (base == nullptr || base->getType().getQualifier().storage != EvqVaryingIn)
error(loc, "first argument must be an interpolant, or interpolant-array element", fnCandidate.getName().c_str(), "");
}
#ifdef AMD_EXTENSIONS
if (callNode.getOp() == EOpInterpolateAtVertex) {
if (!arg0->getType().getQualifier().isExplicitInterpolation())
error(loc, "argument must be qualified as __explicitInterpAMD in", "interpolant", "");
else {
if (! (*argp)[1]->getAsConstantUnion())
error(loc, "argument must be compile-time constant", "vertex index", "");
else {
unsigned vertexIdx = (*argp)[1]->getAsConstantUnion()->getConstArray()[0].getUConst();
if (vertexIdx > 2)
error(loc, "must be in the range [0, 2]", "vertex index", "");
}
}
}
#endif
break;
case EOpEmitStreamVertex: