Gallium3D's LLVMpipe Could Use Some Help
Written by Michael Larabel in Mesa on 18 June 2015 at 03:29 PM EDT. 1 Comment
MESA --
While the LLVMpipe driver is commonly used these days as a software fall-back driver on numerous Linux distributions in cases where no hardware GPU driver is available or working, the LLVMpipe state leaves a lot to be desired. In addition to it benefiting from any speed improvements, there's also lots of help it could use on implementing newer OpenGL support.

OpenGL 4.x support is slowly getting into the picture for the Mesa hardware drivers like Radeon, Intel, and Nouveau, but this reference LLVMpipe driver isn't seeing much OGL4 attention. LLVMpipe is important not only for software fallback situations but it's also of use for driver/game developers in testing their code against a hardware-neutral code-path in trying to work out bugs/regressions.

Roland Scheidegger of VMware shared some of the priority items needing attention within LLVMpipe. Among those on his impromptu list was proper multi-sampling support, rewrite attribute interpolation, real control flow handling, and AVX2 support. From VMware's perspective, they're not even really concerned about OpenGL 4.x features but do invite independent contributors to Mesa to work on the support.
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Michael Larabel is the principal author of Phoronix.com and founded the site in 2004 with a focus on enriching the Linux hardware experience. Michael has written more than 10,000 articles covering the state of Linux hardware support, Linux performance, graphics drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and OpenBenchmarking.org automated benchmarking software. He can be followed via Twitter or contacted via MichaelLarabel.com.

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