[Mesa-dev] [PATCH 09/10] st/vdpau: implement the new DMA-buf based interop

[Ilia Mirkin]

On Mon, Sep 5, 2016 at 2:48 AM, Michel Dänzer <michel at daenzer.net> wrote:
> On 05/09/16 04:37 AM, Ilia Mirkin wrote:
>> On Tue, Mar 8, 2016 at 7:21 AM, Christian König <deathsimple at vodafone.de> wrote:
>>> @@ -80,7 +82,7 @@ vlVdpOutputSurfaceCreate(VdpDevice device,
>>>     res_tmpl.depth0 = 1;
>>>     res_tmpl.array_size = 1;
>>>     res_tmpl.bind = PIPE_BIND_SAMPLER_VIEW | PIPE_BIND_RENDER_TARGET |
>>> -                   PIPE_BIND_LINEAR;
>>> +                   PIPE_BIND_LINEAR | PIPE_BIND_SHARED;
>>
>> Hi Christian,
>>
>> This change appears to have semi-broken vdpau on nouveau. Whenever I
>> flip on the OSD in mplayer, the rendering becomes *extremely* slow.
>> However regular up-scaling without the OSD is plenty fast. This
>> effectively is forcing the output surfaces to live in GART instead of
>> VRAM.
>
> Strictly speaking, they'd only need to be forced to GART while they're
> actually being shared between different GPUs. That's how it works with
> the amdgpu and radeon kernel drivers.

Any suggestions on how to handle this? Perhaps reallocate + copy the
surface in st/vdpau when actual dmabuf sharing is requested?

To be clear - with this change, vdpau with nouveau is unusable in the
presence of an OSD in mplayer. The OSD comes up whenever you seek
around in the video, so in effect, it's unusable. Used to work great.

  -ilia