New Mesa Uniform Buffer Object Patches Posted
Written by Michael Larabel in Mesa on 25 December 2011 at 01:42 PM EST. 1 Comment
Vincent Lejeune has published an updated patch-set providing Uniform Buffer Object (UBO) support for OpenGL in Mesa.

Uniform Buffer Objects is a feature of OpenGL 3.1 and is a buffer object storing uniform data for a shader program. [Those interested in details about OpenGL UBO can find more information on the OpenGL.org Wiki.]

Back during Oktoberfest there was the original UBO patch-set for Mesa, but Vincent has now cleaned up the patches and made a few other changes. This updated version of the Uniform Buffer Object patch-set is now a set of 17 patches against Mesa Git master.

Details on this latest patch-set for the GL_ARB_uniform_buffer_object extension and related work can be found beginning with this mailing list message.

Still to be worked on is i965 DRI driver support along with UBO Gallium3D support for the LLVMpipe, R600g, and vmwgfx graphics drivers. There also needs to be matrix support at code generation, API queries for classic uniform, support for shared and packed layouts, and other technical items to address.

As Mesa 8.0 will be branched from Git master soon, it's unknown whether these remaining changes will land in time to make it into this next Mesa release or if it will be another six months before seeing UBO in a new release (Mesa 8.1).

At least I'm not the only one doing work on Christmas in the Linux world...
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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.

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