unique id for wayland objects

[Pekka Paalanen]

On Thu, 24 May 2018 15:26:23 +0800
zou lan <nancy.lan.zou at gmail.com> wrote:

> Hi pekka
> 
> >>are the c2p numbers from weston-presentation-shm demo?  
> yes. I use this demo. My clock is  CLOCK_MONOTONIC.
> 
> I check the drm kernel code, I find each vblank event send the last
> vblank's timestamp.
> 
> system time                             sec  msec
> [  263.000526] vblank_event  262  983
> [  263.017236] vblank_event 263    0
> [  263.033864] vblank_event  263   17
> [  263.050533] vblank_event  263    33
> [  263.067215] vblank_event  263    50
> 
> I think that's should be the main reason cause the c2p time weird. I don't
> know why kernel return last frame's timestamp. I am still debuging it.

Indeed, that does not sound right. Maybe contact the driver developers
about this?

Which kernel display driver are you using?


Thanks,
pq
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