Etnaviv Gallium3D Driver Revived, Render-Only Library Updated Too
Written by Michael Larabel in Mesa on 24 December 2016 at 06:59 AM EST. Add A Comment
MESA --
Etnaviv project member Christian Gmeiner has sent out the updated patches implementing the Gallium3D driver for Vivante GPU cores.

Etnaviv has been a long-time coming and it's been nearly four years that I've been writing about it on Phoronix as the reverse-engineered, full-stack open-source driver solution for systems making use of Vivante graphics. The DRM driver has been mainline for a few cycles now while back in November the Gallium3D driver was proposed for Mesa.

Coming out yesterday was the "v2" patches of the Etnaviv Gallium3D code, which now include build system integration and the reworked render-only library. As explained previously:
This new render-only library is designed as "a lightweight library to add basic infrastructure for renderonly GPUs. With this library it is possible to run wayland or and other kms egl apps...The renderonly library approach is a temporary workaround until 'gbm2' is ready. I am aware that not everybody is happy about it but it helps to increase the possible use cases like wayland and kms egl apps. Also keep in mind that this library was only made for the embedded use case and will not work with hybrid GPUs etc...It does all the magic regarding in/exporting buffers etc." So this is temporary until "GBM2" is ready, in other words, the effort led by NVIDIA on a new memory allocation API and looks like the work on improving/replacing GBM is of benefit to the Etnaviv developers too.

The Etnaviv Gallium3D driver plus render-only Gallium library amount to 15k lines of code. Those wishing to check out the latest patches while waiting for it to be mainlined in Mesa (hopefully before the next release in February!) can see the Mesa-dev list.
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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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