Function CollectConstants

shadercompiler/EffectCompilerMetal.cpp:3551–3706

}

bool CollectConstants( ParserState& state, StageData& stage, ASTNode* node, std::map<StringReference, ParameterAnnotation>& annotations )
{
	assert( node->GetNodeType() == NT_STRUCT );

	size_t offset = 0;

	for( auto memberNode : node->GetChildren() )
	{
		assert( memberNode && memberNode->GetNodeType() == NT_STRUCT_MEMBER );

		for( auto childNode : memberNode->GetChildren() )
		{
			assert( childNode && childNode->GetNodeType() == NT_NAME_DECLARATION );

			Symbol* symbol = childNode->GetSymbol();
			assert( symbol );

			if( !symbol->used )
			{
				continue;
			}

			const Type& type = symbol->type;

			// Multi-dimensional arrays are not supported yet.
			assert( type.arrayDimensions <= 1 );

			size_t size = 0;
			CalculateSizeAndOffset( type, size, offset );

			int elementCount = 1;
			for( int i = 0; i < type.arrayDimensions; ++i )
			{
				elementCount *= type.arraySizes[i];
			}

			// Note: This calculation is correct only when type can be tightly packed in an array,
			// i.e. type size divisible by alignment.
			size *= elementCount;

			Constant constant;
			constant.name = g_stringTable.AddString( symbol->name );
			constant.offset = (uint32_t)offset;
			constant.size = (uint32_t)size;

			offset += size;

			switch( type.builtInType )
			{
			case OP_FLOAT:
				constant.type = CONSTANT_TYPE_FLOAT;
				break;
			case OP_INT:
				constant.type = CONSTANT_TYPE_INT;
				break;
			case OP_UINT:
			case OP_BINDLESSHANDLETEXTURE2D:
			case OP_BINDLESSHANDLETEXTURE3D: