Woot! Huge thanks-- this really does give me confirmation that probably what I'm doing here is going to work; the starfield was just an initial test, the simplest thing I could convert so I started there. I've heard from one other person so far and it works for them too, so I think I'm good to go ahead and covert the rest of the game to render this way. After that, I can start to make the visual changes I really want to do.