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[HLSL/Spir-V] fix for incorrect spir-v on int dot(int, int)

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Decomposes OpDot into corresponding multiplies and additions.
This commit is contained in:
t.jung 2018-11-15 10:21:36 +01:00
parent e3cc0d35f3
commit b16bea801c
4 changed files with 366 additions and 1 deletions
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11
SPIRV/GlslangToSpv.cpp
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@ -6914,6 +6914,17 @@ spv::Id TGlslangToSpvTraverser::createMiscOperation(glslang::TOperator op, spv::
// We might need the remaining arguments, e.g. in the EOpFrexp case.
std::vector<spv::Id> callArguments(operands.begin(), operands.begin() + consumedOperands);
id = builder.createBuiltinCall(typeId, extBuiltins >= 0 ? extBuiltins : stdBuiltins, libCall, callArguments);
} else if (opCode == spv::OpDot && !isFloat) {
// int dot(int, int)
// NOTE: never called for scalar/vector1, this is turned into simple mul before this can be reached
const int componentCount = builder.getNumComponents(operands[0]);
spv::Id mulOp = builder.createBinOp(spv::OpIMul, builder.getTypeId(operands[0]), operands[0], operands[1]);
builder.setPrecision(mulOp, precision);
id = builder.createCompositeExtract(mulOp, typeId, 0);
for (int i = 1; i < componentCount; ++i) {
builder.setPrecision(id, precision);
id = builder.createBinOp(spv::OpIAdd, typeId, id, builder.createCompositeExtract(operands[0], typeId, i));
}
} else {
switch (consumedOperands) {
case 0: