[Mesa-dev] [PATCH mesa] meson: add missing tegra vdpau driver

[Ilia Mirkin]

On Thu, Dec 6, 2018 at 12:17 PM Eric Engestrom <eric.engestrom at intel.com> wrote:
>
> On Thursday, 2018-12-06 12:07:06 -0500, Ilia Mirkin wrote:
> > Under what circumstances would tegra have a vdpau implementation?
>
> I don't know about that, but this patch brings meson on par with
> autotools. Are you saying autotools was wrong and it should be removed
> there instead?
>
> FtR, src/gallium/targets/vdpau/Makefile.am includes
> src/gallium/drivers/tegra/Automake.inc which adds tegra to the
> TARGET_DRIVERS, which in turn produces libvdpau_tegra.so
>
> If this was wrong, then that include on line 60 of
> src/gallium/targets/vdpau/Makefile.am should be removed.
>
> This line was added by Thierry Reding (cc'ed) when he first introduced
> tegra support in 1755f608f5201e0a23f00 "tegra: Initial support".

I'd like to hear tagr opine on this, but AFAIK tegra is a
renderonly-style driver, which uses nouveau as its actual rendering
backend. While nouveau does support VDPAU, the decoding engines are
not available as part of the GPU device on Tegra platforms. They still
have decoders, they're just separate platform devices (which I suspect
operate very similarly to their desktop GPU counterparts, but that's a
separate matter).

  -ilia