[MPlayer-dev-eng] [PATCH]: reduce vsync wait in VDPAU

[Stephen Warren]

Dan Oscarsson wrote:
> 
> I did some testing yesterday and so far it looks like queued surfaces in
> the presentation queue do not move forward to be displayed. I had nearly
> the same when I tried with my patches when using the 180.22 driver. Then
> it looked like if you did not do "wait for idle on presentation queue",
> the queue never moved forward.

Aha. Yes, that's the bug; for the blit-based presentation queue only, the
surface status was not being updated by query_surface_status, only by
block_until_surface_idle.

I hadn't noticed this before, because the tracing inside the PQ implementation
was printing out the correct progression of state changes; I just hadn't
realized that those updates were only happening from one of the two places it
needed to. I hacked vo_vdpau.c to dump the state of all 6 surfaces each time,
then it was obvious.

This bug will be fixed in the next driver release. Thanks for pointing it out.

-- 
nvpublic