This alternative seemed like a good idea after running tired on the DRI problems with both previous driver alternatives. DRI is the 3D part of XFree86, and is an independent project, releasing it's own drivers. XFree86 has DRI implemented, but the drivers aren't the same. In fact, DRI has developed their own driver specifically for the R200 chipset, meaning it is a driver that supports 3D and works fine with X. Still, the driver supports hardly any of the later GL extensions, meaning more recent games like UT2003 won't run with it.