Phoronix: R600g Driver Patch That Can 4x The Frame-Rate

Following yesterday's article comparing the AMD Radeon Linux drivers on Ubuntu 12.10, Marek Olk looked into some of the cases where the open-source Radeon Gallium3D driver was much slower than the proprietary Catalyst driver. Already with one patch that touches only two dozen lines of code, Marek was able to quadruple the open-source driver frame-rate for at least one game...

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