Please help me , i am trying to run OpenGl faster on my older PC, which has 3dfx(12 MB 3dfx Voodoo2) on it , but i think opengl is using primary device(2MB S3 Virge) , that''s why it runs slow , if it would use 3dfx (if it possible) i think it could run faster ,but i dont know how to do it .I have search everywhere but didnt find anything . On complete application there is a dialog which let you choose between graphic cards .But NO SOURCE . On directx there is some help in switching between devices ,but on OpenGL ????? Please HELP

Are you running your application in windowed mode? 3dfx Voodoo2 (and the original Voodoo) doesn''t support hardware accelerated rendering in windowed mode. Does Voodoo2 support OpenGL through some kind of MiniGL driver?

I have installed
miniinst2.exe - 3Dfx mini-OpenGL driver v1.47 (Voodoo2/Banshee)

But there''s only *.dll files for games like Quake2 ,Hexen ,etc.

I want to use 3dfx in my programs , but i dont know how to switch between 3d accelerator and my primary graphic card.

What function or something like that should i use???