Quote Originally Posted by 89c51 View Post
They could have probably gone Gallium3D which is cross platform and have the "same" driver on all 3 OSes (+benefit from other peoples work) but probably they have their reasons for not doing it.
DX on Windows may have something to do with it

Also, the Windows team is much bigger but also produces a worse driver. If that team were to start coding for the lin driver too, I'm very afraid the lin driver quality would take a nosedive to the win driver levels.