static public dynamic vertexlayout(LispList args, LispEnvironment env)
{
int accum = 0;
InputElement[] elements = new InputElement[args.Elems.Length];
int i = 0;
foreach (LispElement arg in args)
{
InputElement current = arg.Eval(env);
current.AlignedByteOffset = accum;
accum += VertexFormats.getByteCountOf(current.Format);
elements[i] = current;
i++;
}
return(new { elements, elementSize = accum });
}