Glenn Maynard
331fdab2f8
Hmm. Need some way of using rendering masks in BGAs. Not full access to the zbuffer, of course, just a way to implement things like the masked-off stage scroll on top of an unmasked song background. Being able to do this based on the alpha values of another image would have a whole lot of bonuses for background animations, too; eg the canonical trick of rendering things masked by a silhouette. This is tricky to implement, though. It'd be even better if we could do this with full alpha. Most multipass algorithms I can think of would require an alpha channel on the framebuffer, though, and we very often don't have that. I'll keep thinking about it (and perhaps randomly brainstorming into the nearest edit window, such as WinCVS ...)