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Floating-Point Depth Buffers For Mesa

Mesa

Published on 01 July 2011 08:24 AM EDT
Written by Michael Larabel in Mesa
4 Comments

There's another item on the TODO list for Mesa's OpenGL 3.0 support to scratch off. Marek Olšák has been viciously finishing up bits of OpenGL 3.0 support (along with his always-excellent work to the Radeon Gallium3D drivers) and has now produced a set of 13 patches that provide floating-point depth buffers.

The 13 patches that were announced by Marek yesterday evening implement the ARB_depth_buffer_float OpenGL extension in Mesa and Gallium3D. This is part of OpenGL 3.0. Not implemented is NVIDIA's version of this extension, NV_depth_buffer_float, since it's incompatible with the official Khronos extension. Of course, Marek has ensured that this code is working with the ATI/AMD R600 Gallium3D driver.

Find the set of patches currently on the Mesa mailing list. They'll be committed to master soon, which means it will be part of Mesa 7.12 (or Mesa 8.0 if OpenGL 3.0 is finished in the next six months) and released next January.

About The Author
Michael Larabel is the principal author of Phoronix.com and founded the web-site in 2004 with a focus on enriching the Linux hardware experience and being the largest web-site devoted to Linux hardware reviews, particularly for products relevant to Linux gamers and enthusiasts but also commonly reviewing servers/workstations and embedded Linux devices. Michael has written more than 10,000 articles covering the state of Linux hardware support, Linux performance, graphics hardware drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and OpenBenchmarking.org automated testing software. He can be followed via and or contacted via .
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