void TOutputGLSLBase::writeVariableType(const TType &type)
{
TInfoSinkBase &out = objSink();
TQualifier qualifier = type.getQualifier();
if (qualifier != EvqTemporary && qualifier != EvqGlobal)
{
out << type.getQualifierString() << " ";
}
// Declare the struct if we have not done so already.
if (type.getBasicType() == EbtStruct && !structDeclared(type.getStruct()))
{
TStructure *structure = type.getStruct();
declareStruct(structure);
if (!structure->name().empty())
{
mDeclaredStructs.insert(structure->uniqueId());
}
}
else
{
if (writeVariablePrecision(type.getPrecision()))
out << " ";
out << getTypeName(type);
}
}
TString StructNameString(const TStructure &structure)
{
if (structure.name().empty())
{
return "";
}
return "ss" + str(structure.uniqueId()) + "_" + structure.name();
}
void TOutputGLSLBase::writeVariableType(const TType &type)
{
TInfoSinkBase &out = objSink();
if (type.isInvariant())
{
out << "invariant ";
}
TQualifier qualifier = type.getQualifier();
if (qualifier != EvqTemporary && qualifier != EvqGlobal)
{
if (IsGLSL130OrNewer(mOutput))
{
switch (qualifier)
{
case EvqAttribute:
out << "in ";
break;
case EvqVaryingIn:
out << "in ";
break;
case EvqVaryingOut:
out << "out ";
break;
default:
out << type.getQualifierString() << " ";
break;
}
}
else
{
out << type.getQualifierString() << " ";
}
}
// Declare the struct if we have not done so already.
if (type.getBasicType() == EbtStruct && !structDeclared(type.getStruct()))
{
TStructure *structure = type.getStruct();
declareStruct(structure);
if (!structure->name().empty())
{
mDeclaredStructs.insert(structure->uniqueId());
}
}
else
{
if (writeVariablePrecision(type.getPrecision()))
out << " ";
out << getTypeName(type);
}
}
void RegenerateStructNames::visitSymbol(TIntermSymbol *symbol)
{
ASSERT(symbol);
TType *type = symbol->getTypePointer();
ASSERT(type);
TStructure *userType = type->getStruct();
if (!userType)
return;
if (mSymbolTable.findBuiltIn(userType->name(), mShaderVersion))
{
// Built-in struct, do not touch it.
return;
}
int uniqueId = userType->uniqueId();
ASSERT(mScopeDepth > 0);
if (mScopeDepth == 1)
{
// If a struct is defined at global scope, we don't map its name.
// This is because at global level, the struct might be used to
// declare a uniform, so the same name needs to stay the same for
// vertex/fragment shaders. However, our mapping uses internal ID,
// which will be different for the same struct in vertex/fragment
// shaders.
// This is OK because names for any structs defined in other scopes
// will begin with "_webgl", which is reserved. So there will be
// no conflicts among unmapped struct names from global scope and
// mapped struct names from other scopes.
// However, we need to keep track of these global structs, so if a
// variable is used in a local scope, we don't try to modify the
// struct name through that variable.
mDeclaredGlobalStructs.insert(uniqueId);
return;
}
if (mDeclaredGlobalStructs.count(uniqueId) > 0)
return;
// Map {name} to _webgl_struct_{uniqueId}_{name}.
const char kPrefix[] = "_webgl_struct_";
if (userType->name().find(kPrefix) == 0)
{
// The name has already been regenerated.
return;
}
std::string id = Str(uniqueId);
TString tmp = kPrefix + TString(id.c_str());
tmp += "_" + userType->name();
userType->setName(tmp);
}
TString StructNameString(const TStructure &structure)
{
if (structure.symbolType() == SymbolType::Empty)
{
return "";
}
// For structures at global scope we use a consistent
// translation so that we can link between shader stages.
if (structure.atGlobalScope())
{
return Decorate(structure.name());
}
return "ss" + str(structure.uniqueId().get()) + "_" + TString(structure.name().data());
}
bool TStructure::equals(const TStructure &other) const
{
return (uniqueId() == other.uniqueId());
}