I installed Descent 3 (and 2 and 1) on my core i5-2500k machine and was surprised to find all kinds of weird visual problems when running the game in direct3d mode. After a little research online, I found a utility called “nglide” that simply makes the game run like it was supposed to. The game looks great now. Go download today!
You just install nglide and then start up the Descent 3 launcher and scan for display devices and be sure to pick 3dfx.
I also found it useful to modify some command-line parameters. I have mine launching with “-deadzone0 0.0 -deadzone1 0.0 -bumped -z32bit”. See the full list of options here: