Function CreateGlobalInputsStruct

shadercompiler/EffectCompilerMetal.cpp:4699–4788

}

ASTNode* CreateGlobalInputsStruct( ParserState& state, const std::vector<GlobalInputElement>& globalInputs )
{
	state.GetSymbolTable().EnterScope();
	auto globalInputsStruct = NewStruct( state, state.AllocateName( "__RtGlobalInput" ) );
	for( auto& in : globalInputs )
	{
		auto existing = state.GetSymbolTable().LookupGlobal( ToString( in.name ).c_str() );
		if( !existing )
		{
			existing = state.GetSymbolTable().LookupBuffer( in.name );
		}
		auto symbol = state.GetSymbolTable().AddSymbol( existing->name );
		if( existing->isTypeName )
		{
			symbol->type.FromSymbol( existing );
			symbol->registerSpecifier = existing->registerSpecifier;
		}
		else
		{
			symbol->type = existing->type;
		}
		auto type = symbol->type;
		if( type.symbol &&
			type.symbol->definition &&
			type.symbol->definition->GetNodeType() == NT_STRUCT )
		{
			symbol->type = TypeFromTokenType( OP_STRUCTUREDBUFFER );
			symbol->type.templateParameter = new Type( type );
			symbol->addressSpace = AddressSpace::Constant;
		}
		else
		{
			switch( type.builtInType )
			{
			case OP_BUFFER:
			case OP_STRUCTUREDBUFFER:
			case OP_RWBUFFER:
			case OP_RWSTRUCTUREDBUFFER:
			case OP_RAYTRACING_ACCELERATION_STRUCTURE:
				symbol->addressSpace = AddressSpace::Device;
				if( type.arrayDimensions )
				{
					symbol->resourceRefWrapped = true;
				}
				break;
			default:
				if( type.arrayDimensions && ( type.IsTexture() || type.IsSampler() ) )
				{
					symbol->addressSpace = AddressSpace::Device;
					symbol->resourceRefWrapped = true;
				}
				break;
			}
		}
		auto decl = state.NewNode( NT_NAME_DECLARATION );
		decl->SetSymbol( symbol );
		decl->SetType( symbol->type );