Intel seem to disagree with you They rather write their driver the old way and do not loose 5 10 of computing power For people who would like to use Linux as a gaming platform 5 10 loss in performance due to avoidable layers of abstraction i e John D Carmack s layers of crap is quite much The claim that Gallium3D could cost maybe 5 10 of performance is from some VMware employee in some Video I once watched on YouTube