It's been a long time (years) since I've used Glide for anything.  I have the 3Dfx Glide 2 and 3 SDKs on my laptop, but lately, I've been mostly focused on commercial app programming (although still want to write demos too from time to time).  I'd like to get back into Glide programming sometime, but it should wait until I can get my older PC up and running again.  I can barely remember exactly how Glide works, but if you know your 3D vector math, than using Glide should be no problem for you!  And yes, there is a Glide SDK for linux.

Good luck!