AMD R600 Gallium3D Performance Changes Found On Mesa 9.3
Written by Michael Larabel in Display Drivers on 9 October 2013. Page 2 of 4. 1 Comment

With the defunct Nexuiz game, the Mesa 9.3-devel performance for the R600 Gallium3D driver on the Radeon HD 4870 is slightly slower than with the Mesa 9.2 stable Git branch.

While OpenArena 0.8.5 is an old open-source ioquake3 game and not popular amongst gamers, in the past it's been a common Mesa test by driver developers for stressing basic OpenGL functionality. With R600g on the RV770 GPU, the performance is down by over 20%.

Fortunately for the newer OpenArena 0.8.8 game that uses GLSL and other GL2 functionality, the performance is only down by a few frames per second.

While the ioquake3 OpenArena performance was down for the R600g in our early Mesa test, the ioquake3-based Reaction performance is much better. Reaction Quake 3 has traditionally struggled on R600g compared to the other Mesa/Gallium3D drivers and to the binary AMD/NVIDIA drivers. It's really nice to see the latest R600g code running the game 28% faster.

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