I recall John Carmack contributing to some of these drivers, especially the ATI Rage driver. I think it's the driver being removed.

Here's an example of his forum posts from 2000 related to working on some of these drivers: https://web.archive.org/web/20000816145733/http://lists.sour...

Poke around here for more:

https://web.archive.org/web/20000815084204/http://lists.sour...

https://web.archive.org/web/20001019083125/http://utah-glx.s...