May 2011: Gallium3D vs. Classic Mesa vs. Catalyst
Phoronix: May 2011: Gallium3D vs. Classic Mesa vs. Catalyst
The open-source graphics driver landscape is ever changing with new work going into Mesa / Gallium3D near daily. While many improvements have been made in recent time, the open-source drivers have a ways to go in competing with the proprietary competition. Even the open-source AMD driver, which is developed using documentation from AMD as well as code and engineering resources within the company, it has a tough time competing with the well-optimized Catalyst driver. Fortunately, the AMD driver is now largely centered on the two Gallium3D drivers: R300g and R600g, and have pushed away their classic Mesa DRI drivers into maintenance mode. The R300g supports the R300 through R500 ASICs (up through the Radeon X1000 series) while the R600g driver supports all ATI/AMD hardware past that point up through the latest Radeon HD 6000 series and Fusion. In this article, we are seeing where the performance is currently at for the classic Mesa, Gallium3D, and Catalyst drivers under Linux.
Still no Cayman support last time I tried
I have a 6950, one of the last remaining unsupported cards, it would seem. Well, unsupported in terms of 3D acceleration, anyway - KMS works, but no direct rendering. I really want to like GNOME Shell, but can't give it a fair try, because if I use the open-source drivers or llvmpipe it goes into fallback mode, and if I use the proprietary drivers I get creeping texture corruption until the session eventually becomes unusable.
Wake me up when Gallium3D support arrives for Cayman....