[Libva] VA-API does no v-sync with H264 interlaced videos

[Lutz Sammer]

On 03/09/2013 05:23 PM, Lutz Sammer wrote:
> On 03/07/2013 12:32 PM, Daniel Vetter wrote:
>> On Thu, Mar 7, 2013 at 9:38 AM, Lutz Sammer <johns98 at gmx.net> wrote:
>>> vaPutSurface (X11) waits on v-sync?
>>
>> With the minor nit that for a long time the intel X driver didn't
>> implement this on snb/ivb, resulting in tearing. But with kernel 3.8
>> and latest xfree86-video-intel when using the SNA backed it should
>> work.
>
> The result is that with xf86-video-intel GIT from yesterday,
> libva-intel-driver-1.0.18, libva-1.1.0 and kernel-3.8.2.
> vaPutSurface does no longer wait on vsync.
>
> With SNA:
> X &; export DISPLAY=:0.0; putsurface -> 75.29 FPS
> CTRL-C

Seems to be random, I just updated GIT to have a debug version
for the backtrace and now its reporting 50.20 FPS.

Johns