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HLSL: Include shape-changing conversions in overloaded signature selection.

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This also enables vecN -> vec1 shape conversions for all places doing shape
conversions.

For signature selection, makes shape changes worse than any other comparison
when deciding what conversions are better than others.
This commit is contained in:
John Kessenich 2016-08-25 15:57:56 -06:00
parent 90dd70f752
commit e3f2c8f98a
6 changed files with 1504 additions and 1026 deletions
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10
glslang/MachineIndependent/Intermediate.cpp
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@ -702,6 +702,7 @@ TIntermTyped* TIntermediate::addShapeConversion(TOperator op, const TType& type,
case EOpGreaterThan:
case EOpLessThanEqual:
case EOpGreaterThanEqual:
case EOpFunctionCall:
break;
default:
return node;
@ -715,9 +716,11 @@ TIntermTyped* TIntermediate::addShapeConversion(TOperator op, const TType& type,
// The new node that handles the conversion
TOperator constructorOp = mapTypeToConstructorOp(type);
// scalar -> smeared -> vector
if (type.isVector() && node->getType().isScalar())
return setAggregateOperator(node, constructorOp, type, node->getLoc());
// scalar -> smeared -> vector, or
// bigger vector -> smaller vector or scalar
if ((type.isVector() && node->getType().isScalar()) ||
(node->getVectorSize() > type.getVectorSize() && type.isVector()))
return setAggregateOperator(makeAggregate(node), constructorOp, type, node->getLoc());
return node;
}
@ -731,6 +734,7 @@ bool TIntermediate::canImplicitlyPromote(TBasicType from, TBasicType to, TOperat
if (profile == EEsProfile || version == 110)
return false;
// TODO: Move more policies into language-specific handlers.
// Some languages allow more general (or potentially, more specific) conversions under some conditions.
if (source == EShSourceHlsl) {
const bool fromConvertable = (from == EbtFloat || from == EbtDouble || from == EbtInt || from == EbtUint || from == EbtBool);