Blackhawk2-
You may be able to put Sweeney in that category, but placing Carmack as just another programmer is ignorant in a way that is hard to explain. Without JC, 3dfx may well never have had the kind of success that they did. Carmack gave them the killer app for their Voodoo1, he was ready and waiting with his engine for technology to catch up, and gave the first company to do so the tool they needed to move their product.
Carmack was on 3dfx's board of technical advisors, as he is with most of the 3D hardware companies. The man is considered a visionary by most people in the industry, and I would wager he knows far more about 3D hardware then the overwhelming majority of ASIC engineers.
He not only understands what current 3D hardware is doing, he also has a very solid grasp on what it needs to do to move forward. For quite some time 3dfx was saying that 32bit color was not useful, Carmack mentions that he wants 64bit and all of a sudden they become vocal supporters of it.
Every time he releases a new 3D engine, he pushes the envelope of what 3D hardware, and PC hardware in general can do. Noone else in the industry has proven that they can equal his ability to squeeze the last drop of performance out of such an open platform.
Deeko-
As far as tiling technology goes, why was 3dfx building the Rampage? Since defered rendering is supposedly so great, WTF were they not using it for? Don't give me the they just bought GP crap, they would have come up with their own if it truly was such a great technology.
"Tile based rendering is so much more efficiant than regular rendering. Look at the Kyro, look at the Dreamcast. Two prime examples. Dave should teach whoever said that a lesson"
OK, I'm looking at them... The Kyro isn't that fast, has rendering flaws, can't handle large geometry loads properly, doesn't work with half the features it "supports"(S3TC, Dot3). The Dreamcast is a console, it is in comparison very easy to make a fixed platform look good, tiling or not.