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Front-ends: Non-functional: Rationalize vector and matrix swizzles.

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This reduces code duplication in a few ways, and better encapsulates
vector swizzle representation.
This commit is contained in:
John Kessenich 2017-01-13 19:34:22 -07:00
parent 0a76a1870c
commit c142c88967
12 changed files with 269 additions and 340 deletions
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10
glslang/MachineIndependent/Constant.cpp
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@ -974,20 +974,20 @@ TIntermTyped* TIntermediate::foldDereference(TIntermTyped* node, int index, cons
// Make a constant vector node or constant scalar node, representing a given
// constant vector and constant swizzle into it.
//
TIntermTyped* TIntermediate::foldSwizzle(TIntermTyped* node, TVectorFields& fields, const TSourceLoc& loc)
TIntermTyped* TIntermediate::foldSwizzle(TIntermTyped* node, TSwizzleSelectors<TVectorSelector>& selectors, const TSourceLoc& loc)
{
const TConstUnionArray& unionArray = node->getAsConstantUnion()->getConstArray();
TConstUnionArray constArray(fields.num);
TConstUnionArray constArray(selectors.size());
for (int i = 0; i < fields.num; i++)
constArray[i] = unionArray[fields.offsets[i]];
for (int i = 0; i < selectors.size(); i++)
constArray[i] = unionArray[selectors[i]];
TIntermTyped* result = addConstantUnion(constArray, node->getType(), loc);
if (result == 0)
result = node;
else
result->setType(TType(node->getBasicType(), EvqConst, fields.num));
result->setType(TType(node->getBasicType(), EvqConst, selectors.size()));
return result;
}