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HLSL: for split output structs, propagate indirection to builtin.

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Some stage (e.g, hull shaders) have arrayed builtin outputs (e.g, position).
When copying from the internal structure to the split form, it is necessary
to propagate that indirection to the actual arrayed outputs.  This was not
happening.

Addresses #1181
This commit is contained in:
LoopDawg 2017-12-12 16:21:22 -07:00
parent e078059d06
commit 0cff51004d
3 changed files with 91 additions and 84 deletions
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24
hlsl/hlslParseHelper.cpp
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@ -2731,13 +2731,23 @@ TIntermTyped* HlslParseContext::handleAssign(const TSourceLoc& loc, TOperator op
// copy from interstage IO built-in if needed
subTree = intermediate.addSymbol(*builtInVar);
// Arrayness of builtIn symbols isn't handled by the normal recursion:
// it's been extracted and moved to the built-in.
if (subTree->getType().isArray() && !arrayElement.empty()) {
const TType splitDerefType(subTree->getType(), arrayElement.back());
subTree = intermediate.addIndex(EOpIndexDirect, subTree,
intermediate.addConstantUnion(arrayElement.back(), loc), loc);
subTree->setType(splitDerefType);
if (subTree->getType().isArray()) {
// Arrayness of builtIn symbols isn't handled by the normal recursion:
// it's been extracted and moved to the built-in.
if (!arrayElement.empty()) {
const TType splitDerefType(subTree->getType(), arrayElement.back());
subTree = intermediate.addIndex(EOpIndexDirect, subTree,
intermediate.addConstantUnion(arrayElement.back(), loc), loc);
subTree->setType(splitDerefType);
} else if (splitNode->getAsOperator() != nullptr && (splitNode->getAsOperator()->getOp() == EOpIndexIndirect)) {
// This might also be a stage with arrayed outputs, in which case there's an index
// operation we should transfer to the output builtin.
const TType splitDerefType(subTree->getType(), 0);
subTree = intermediate.addIndex(splitNode->getAsOperator()->getOp(), subTree,
splitNode->getAsBinaryNode()->getRight(), loc);
subTree->setType(splitDerefType);
}
}
} else if (flattened && !shouldFlatten(derefType, isLeft ? leftStorage : rightStorage, false)) {
if (isLeft)