// Make a shared symbol have a non-shared version that can be edited by the current
// compile, such that editing its type will not change the shared version and will
// effect all nodes already sharing it (non-shallow type),
// or adopting its full type after being edited (shallow type).
void TParseContextBase::makeEditable(TSymbol*& symbol)
{
// copyUp() does a deep copy of the type.
symbol = symbolTable.copyUp(symbol);
// Save it (deferred, so it can be edited first) in the AST for linker use.
if (symbol)
trackLinkage(*symbol);
}
//
// Make the passed-in variable information become a member of the
// global uniform block. If this doesn't exist yet, make it.
//
void TParseContextBase::growGlobalUniformBlock(const TSourceLoc& loc, TType& memberType, const TString& memberName, TTypeList* typeList)
{
// Make the global block, if not yet made.
if (globalUniformBlock == nullptr) {
TQualifier blockQualifier;
blockQualifier.clear();
blockQualifier.storage = EvqUniform;
TType blockType(new TTypeList, *NewPoolTString(getGlobalUniformBlockName()), blockQualifier);
setUniformBlockDefaults(blockType);
globalUniformBlock = new TVariable(NewPoolTString(""), blockType, true);
firstNewMember = 0;
}
// Update with binding and set
globalUniformBlock->getWritableType().getQualifier().layoutBinding = globalUniformBinding;
globalUniformBlock->getWritableType().getQualifier().layoutSet = globalUniformSet;
// Add the requested member as a member to the global block.
TType* type = new TType;
type->shallowCopy(memberType);
type->setFieldName(memberName);
if (typeList)
type->setStruct(typeList);
TTypeLoc typeLoc = {type, loc};
globalUniformBlock->getType().getWritableStruct()->push_back(typeLoc);
// Insert into the symbol table.
if (firstNewMember == 0) {
// This is the first request; we need a normal symbol table insert
if (symbolTable.insert(*globalUniformBlock))
trackLinkage(*globalUniformBlock);
else
error(loc, "failed to insert the global constant buffer", "uniform", "");
} else {
// This is a follow-on request; we need to amend the first insert
symbolTable.amend(*globalUniformBlock, firstNewMember);
}
++firstNewMember;
}
//
// Insert into the symbol table the global uniform block created in
// growGlobalUniformBlock(). The variables added as members won't be
// found unless this is done.
//
bool TParseContextBase::insertGlobalUniformBlock()
{
if (globalUniformBlock == nullptr)
return true;
int numMembers = (int)globalUniformBlock->getType().getStruct()->size();
bool inserted = false;
if (firstNewMember == 0) {
// This is the first request; we need a normal symbol table insert
inserted = symbolTable.insert(*globalUniformBlock);
if (inserted)
trackLinkage(*globalUniformBlock);
} else if (firstNewMember <= numMembers) {
// This is a follow-on request; we need to amend the first insert
inserted = symbolTable.amend(*globalUniformBlock, firstNewMember);
}
if (inserted) {
finalizeGlobalUniformBlockLayout(*globalUniformBlock);
firstNewMember = numMembers;
}
return inserted;
}
