There are some workarounds to get some old (dos) Glide games to work on v2 and voodoo3.

Once you get them working on v3 there's a bigger chance you get them working on v5.

Every game is different, make sure you use the right 3dfx driver or .ovl files/Glide.dll. Also force using one v5 chip and max 4mb in de driver for better compatibility.

DirectX should usually work well. Glide try to fix it per game. This is exactly the reason to have multiple 3dfx systems 😀

haker120 wrote on 2023-05-17, 08:27:

And finally, are there games that work only on V1 or V2 and not on other voodoos?

Yes, mostly DOS Glide games, but there are also some early Win95 Glide-only titles like Pandemonium which don't work on Voodoo 3 and up.

See here for more details: Voodoo 2 DOS Glide compatibility matrix

Descent is not a Voodoo5 problem, it's a CPU too fast problem. Descent on the Voodoo1 works OK because of performance limitations of the card. You can use a slow-down utility if you want to run it on a Voodoo5. You'll run into a similar CPU issue with Decent 2 (game runs OK, but mouse control is super slow).

For GEX 2, try forcing the Voodoo5 into single-chip mode via driver.

SET FX_GLIDE_SWAPINTERVAL=2 in a batch file should help in Glide games where the Voodoo5 works but the CPU is too fast. It does swap every two v-syncs, limiting the frame rate to the half of the screen refresh rate.

Gmlb256 wrote on 2023-05-17, 16:33:

SET FX_GLIDE_SWAPINTERVAL=2 in a batch file should help in Glide games where the Voodoo5 works but the CPU is too fast. It does swap every two v-syncs, limiting the frame rate to the half of the screen refresh rate.

that's nice to know, might actually fix that broken pandemonium port.

Thanks for all advices, unfortunately I couldn't even check any of these today. 🤣 I will try tomorrow, for me. 😀