Why Mesa 9.2 Doesn't Work For All Linux Users
Written by Michael Larabel in Mesa on 21 August 2013 at 05:16 PM EDT. 12 Comments
While Mesa 9.2 has some performance improvements and many new features, this open-source 3D graphics library isn't cut for everyone.

The soon-to-be-released Mesa 9.2 comes up short for some Linux enthusiasts and open-source desktop users with regards to:

OpenGL - Mesa 9.2 only has OpenGL 3.1~3.2 support for the key Radeon, Intel, and Nouveau graphics drivers. The latest Khronos specification is OpenGL 4.4 as of this month, which won't be coming to Mesa anytime soon. The latest hope is to have open-source OpenGL 3.3 support by the end of the year while GL4 support isn't likely until the 2014 Mesa releases. The proprietary AMD and NVIDIA drivers on Linux already support OpenGL 4.3/4.4 and the Windows proprietary driver from Intel is also GL4 compliant.

RadeonSI & LLVMpipe OpenGL - While the R600 Gallium3D driver supports OpenGL 3, the "RadeonSI" Gallium3D driver for the Radeon HD 7000/8000 series graphics cards only fully enables OpenGL 2.1 support. GL3 support for this newer Radeon Gallium3D driver is still actively being pursued. The LLVMpipe software driver fallback also only advertises OpenGL 2.1 but almost has OpenGL 3.0/3.1 support. Hopefully for the next Mesa release these increasingly-used drivers will see the light of GL3.

OpenCL - The OpenCL language support via the "Clover" Gallium3D state tracker is still less than ideal. The Radeon and Nouveau drivers have been working towards Gallium3D OpenCL and some GPUs can withstand bitcoin mining on the open-source stack, but for most users interested in real-world CL workloads, the Gallium3D support isn't yet enough.

Performance - The Nouveau driver is not faster than the NVIDIA Linux (or Windows) driver, the Radeon Gallium3D drivers are not faster than AMD Catalyst, and the Intel Linux driver isn't faster than the Intel Windows driver. The Mesa/Gallium3D drivers still have performance that comes up short of the proprietary competition, but at least the situation has been improving.

Sadly, these missing/incomplete features haven't changed much since Mesa 9.1. What missing features or open bugs are currently making your Mesa driver experience less than ideal? Share with us in the forums.
About The Author
Author picture

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 Twitter or contacted via MichaelLarabel.com.

Related Mesa News
Popular News
Trending Reviews & Featured Articles