Phoronix: Nouveau's OpenGL Performance Approaches The NVIDIA Driver

As I began to share over the weekend, the community-created Nouveau driver that's open-source and is written by clean-room reverse-engineering the NVIDIA binary display driver, has reached a serious milestone. For low-end NVIDIA GPUs, the Nouveau driver based upon the Mesa Gallium3D architecture is now as fast, or even faster, than NVIDIA's official proprietary driver.

http://www.phoronix.com/vr.php?view=15812