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WIP: HLSL: Support InputPatch variables in patch constant functions

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Previously, patch constant functions only accepted OutputPatch.  This
adds InputPatch support, via a pseudo-builtin variable type, so that
the patch can be tracked clear through from the qualifier.
This commit is contained in:
steve-lunarg 2017-04-01 15:34:48 -06:00
parent b68b9a8b23
commit 067eb9b48a
8 changed files with 739 additions and 34 deletions
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11
hlsl/hlslGrammar.cpp
View file

@ -963,14 +963,14 @@ bool HlslGrammar::acceptOutputPrimitiveGeometry(TLayoutGeometry& geometry)
// : INPUTPATCH
// | OUTPUTPATCH
//
bool HlslGrammar::acceptTessellationDeclType()
bool HlslGrammar::acceptTessellationDeclType(TBuiltInVariable& patchType)
{
// read geometry type
const EHlslTokenClass tessType = peek();
switch (tessType) {
case EHTokInputPatch: break;
case EHTokOutputPatch: break;
case EHTokInputPatch: patchType = EbvInputPatch; break;
case EHTokOutputPatch: patchType = EbvOutputPatch; break;
default:
return false; // not a tessellation decl
}
@ -984,7 +984,9 @@ bool HlslGrammar::acceptTessellationDeclType()
//
bool HlslGrammar::acceptTessellationPatchTemplateType(TType& type)
{
if (! acceptTessellationDeclType())
TBuiltInVariable patchType;
if (! acceptTessellationDeclType(patchType))
return false;
if (! acceptTokenClass(EHTokLeftAngle))
@ -1011,6 +1013,7 @@ bool HlslGrammar::acceptTessellationPatchTemplateType(TType& type)
TArraySizes* arraySizes = new TArraySizes;
arraySizes->addInnerSize(size->getAsConstantUnion()->getConstArray()[0].getIConst());
type.newArraySizes(*arraySizes);
type.getQualifier().builtIn = patchType;
if (! acceptTokenClass(EHTokRightAngle)) {
expected("right angle bracket");