"Essentially, Carmack feels there's not enough testing of OpenGL
drivers going on, largely because most of it's being done by
software developers in their spare time."
"More to the point, driver development tends to focus on getting
the maximum performance on key features rather than properly
supporting the wider OpenGL feature set. "I would rather improve
quality and coverage instead of kicking a few more fps out of Quake
III," he notes."
"What's needed, he writes in his latest .plan file, is a
"vendor-neutral OpenGL watchdog, or even a small group, especially
in the Linux space" who can "really exercise different
implementations through all corners of the OpenGL