Anyone know how many UV sets HL2 supports?

[Mars]

Working on some tools, I was just curious if Source supports more than one UV set and if there is a limit to the number of UV sets supported.

[Joshua Stubbles]

I've only been mapping for the Source engine right now. I havne't tried creating meshes for the engine yet. Source *should* support up to 99 UV channels. We're using the Gamebryo engine to develop our current title (PC,console), and it supports up to 99 UV channels. Source of course, is far more advanced.