[Libre-soc-dev] [Mesa-dev] Loading Vulkan Driver

[Luke Kenneth Casson Leighton]

On Sun, Aug 23, 2020 at 10:19 AM apinheiro <apinheiro at igalia.com> wrote:
> On 23/8/20 8:11, Luke Kenneth Casson Leighton wrote:
> > next step is to add 3D opcodes *directly* to the POWER9 core that we
> > are developing.
>
> Then, in addition to the drivers you already looking as reference, it
> would make sense if you take a look to Vallium, that have just landed on
> Mesa master
>
> https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6082

appreciated - we missed this one in the evaluation process (i think),
so thank you.  a primary objective is a native Vulkan driver.  correct
me if i am wrong, vallium is a "gallium-to-vulkan adapter"?  i saw
something about gallium which explained that gallium is not (yet)
entirely suited to this task?  also that there are threading
limitations in gallium and/or llvmpipe.

one of the reasons for picking a route that involves NIR is to
leverage the significant high-performance work done there, because
whilst libre-soc is a software-renderer, it's a software-renderer on
hardware that has (will have) full GPU capabilities.  if we used
gallium (or started from SwiftShader) the superb work done by NIR
passes would need to be duplicated.

l.