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HLSL: phase 2d: minor cleanup, & allow operator[] on non-rw textures

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Improve comments.
A few tweaked lines allow [] on non-rw tx.  Add test case for this.
Improve VectorTimesScalar handling.
This commit is contained in:
steve-lunarg 2016-10-10 10:00:14 -06:00
parent 0de16da2c0
commit 07830e805b
8 changed files with 923 additions and 92 deletions
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15
hlsl/hlslParseHelper.cpp
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@ -130,6 +130,10 @@ bool HlslParseContext::parseShaderStrings(TPpContext& ppContext, TInputScanner&
return numErrors == 0;
}
//
// Return true if this l-value node should be converted in some manner.
// For instance: turning a load aggregate into a store in an l-value.
//
bool HlslParseContext::shouldConvertLValue(const TIntermNode* node) const
{
if (node == nullptr)
@ -177,6 +181,9 @@ bool HlslParseContext::lValueErrorCheck(const TSourceLoc& loc, const char* op, T
//
TIntermTyped* HlslParseContext::handleLvalue(const TSourceLoc& loc, const char* op, TIntermTyped* node)
{
if (node == nullptr)
return nullptr;
TIntermBinary* nodeAsBinary = node->getAsBinaryNode();
TIntermUnary* nodeAsUnary = node->getAsUnaryNode();
TIntermAggregate* sequence = nullptr;
@ -571,12 +578,18 @@ TIntermTyped* HlslParseContext::handleBracketOperator(const TSourceLoc& loc, TIn
const TSampler& sampler = base->getType().getSampler();
if (sampler.isImage() || sampler.isTexture()) {
const int vecSize = 4; // TODO: handle arbitrary sizes (get from qualifier)
TIntermAggregate* load = new TIntermAggregate(EOpImageLoad);
TIntermAggregate* load = new TIntermAggregate(sampler.isImage() ? EOpImageLoad : EOpTextureFetch);
load->setType(TType(sampler.type, EvqTemporary, vecSize));
load->setLoc(loc);
load->getSequence().push_back(base);
load->getSequence().push_back(index);
// Textures need a MIP. First indirection is always to mip 0. If there's another, we'll add it
// later.
if (sampler.isTexture())
load->getSequence().push_back(intermediate.addConstantUnion(0, loc, true));
return load;
}
}