AMD Gallium3D Performance Is Much Better Than Two Years Ago
Xonotic with ultra quality settings sees the frame-rate drop with Mesa 9.2, but that may be due to more OpenGL functionality being used now by the driver that can lead to better visuals but at the cost of reduced frame-rates.
Ultimate settings in Xonotic also causes a dip in the frame-ate for Mesa 9.2 on the R600 Radeon Gallium3D open-source graphics driver.