Well, that Quake 2 port uses WebGL - as far as I can tell this should work out of the box in any browser with the right implementations.
Interestingly, no. This is a Mozilla-only non-standard extension, whereas WebGL is in HTML 5. Right now neither work everywhere, but WebGL is the one with a way forward.
Well, I stand corrected then. I thought the article seemed to imply that it wasn't a non-standard extension, just a standard extension that had only been implemented correctly in Mozilla. Looking back, it seems like you are correct though.
This is wonderful. The web will be very cool soon.
Yeah, this is the feature that'll make the web finally break mainstream.