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HLSL: Type sanitization: create non-IO types for var decl and fn param/ret

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This introduces parallel types for IO-type containing aggregates used as
non-entry point function parameters or return types, or declared as variables.
Further uses of the same original type will share the same sanitized deep
structure.

This is intended to be used with the wrap-entry-point branch.
This commit is contained in:
steve-lunarg 2017-01-25 10:03:17 -07:00 • committed by John Kessenich
parent 0fe106afd2
commit 5d3023af03
5 changed files with 282 additions and 229 deletions
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11
hlsl/hlslParseHelper.h
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@ -228,8 +228,9 @@ protected:
int flattenStruct(const TSourceLoc& loc, const TVariable& variable, const TType&, TFlattenData&, TString name);
int flattenArray(const TSourceLoc& loc, const TVariable& variable, const TType&, TFlattenData&, TString name);
// Type sanitization: return existing sanitized (temporary) type if there is one, else make new one.
TType* sanitizeType(TType*);
// Create a non-IO type from an IO type. If there is no IO data, this returns the input type unmodified.
// Otherwise, it modifies the type in place, and returns a pointer to it.
TType* makeNonIoType(TType*);
void finish() override; // post-processing
@ -296,9 +297,9 @@ protected:
TVector<int> flattenLevel; // nested postfix operator level for flattening
TVector<int> flattenOffset; // cumulative offset for flattening
// Sanitized type map. During declarations we use the sanitized form of the type
// if it exists.
TMap<const TTypeList*, TType*> sanitizedTypeMap;
// Sanitized type map. If the same type is sanitized again, we want to reuse it.
// We cannot index by the TType: the map is typelist to typelist.
TMap<const TTypeList*, TTypeList*> nonIoTypeMap;
// Structure splitting data:
TMap<int, TVariable*> splitIoVars; // variables with the builtin interstage IO removed, indexed by unique ID.