BeOS R4.5 did have hardware accelerated OpenGL for 3dfx Voodoo cards. I played Quake 2 in 1999 with HW OpenGL acceleration. For R5 BeInc wanted to redo their

BeOS R4.5 did have hardware accelerated OpenGL for 3dfx Voodoo cards. I played Quake 2 in 1999 with HW OpenGL acceleration. For R5 BeInc wanted to redo their OpenGL stack, and the initial prototypes seeded to testers actually had more FPS on BeOS than under Windows.