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SPV: Fix missing 'Member' operand to OpArrayLength.

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This commit is contained in:
John Kessenich
2015-09-21 21:50:29 -06:00
parent 142d7780a4
commit ee21fc9081
5 changed files with 18 additions and 4 deletions
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5
SPIRV/GlslangToSpv.cpp
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@@ -741,11 +741,12 @@ bool TGlslangToSpvTraverser::visitUnary(glslang::TVisit /* visit */, glslang::TI
// Normal .length() would have been constant folded by the front-end.
// So, this has to be block.lastMember.length().
// SPV wants "block" as the operand, go get it.
// SPV wants "block" and member number as the operands, go get them.
assert(node->getOperand()->getType().isRuntimeSizedArray());
glslang::TIntermTyped* block = node->getOperand()->getAsBinaryNode()->getLeft();
block->traverse(this);
spv::Id length = builder.createUnaryOp(spv::OpArrayLength, builder.makeIntType(32), builder.accessChainGetLValue());
unsigned int member = node->getOperand()->getAsBinaryNode()->getRight()->getAsConstantUnion()->getConstArray()[0].getUConst();
spv::Id length = builder.createArrayLength(builder.accessChainGetLValue(), member);
builder.clearAccessChain();
builder.setAccessChainRValue(length);

10
SPIRV/SpvBuilder.cpp
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@@ -890,6 +890,16 @@ Id Builder::createAccessChain(StorageClass storageClass, Id base, std::vector<Id
return chain->getResultId();
}
Id Builder::createArrayLength(Id base, unsigned int member)
{
Instruction* length = new Instruction(getUniqueId(), makeIntType(32), OpArrayLength);
length->addIdOperand(base);
length->addImmediateOperand(member);
buildPoint->addInstruction(length);
return length->getResultId();
}
Id Builder::createCompositeExtract(Id composite, Id typeId, unsigned index)
{
Instruction* extract = new Instruction(getUniqueId(), typeId, OpCompositeExtract);

3
SPIRV/SpvBuilder.h
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@@ -225,6 +225,9 @@ public:
// Create an OpAccessChain instruction
Id createAccessChain(StorageClass, Id base, std::vector<Id>& offsets);
// Create an OpArrayLength instruction
Id createArrayLength(Id base, unsigned int member);
// Create an OpCompositeExtract instruction
Id createCompositeExtract(Id composite, Id typeId, unsigned index);
Id createCompositeExtract(Id composite, Id typeId, std::vector<unsigned>& indexes);