vblank-synchronized Present copy

[Po Lu]

Matthieu Herrb <matthieu at herrb.eu> writes:

> On Thu, Nov 24, 2022 at 06:35:07PM +0800, Po Lu wrote:
>> Matthieu Herrb <matthieu at herrb.eu> writes:
>> 
>> > Not all systems supported by X.Org have timerfd. So please make this
>> > feàture conditional it's presence,
>> 
>> Sure, but isn't modesetting recent-Linux-only?
>
> No, the version in Xserver 21.1.4 works perferctly on OpenBSD with
> Mesa 21.1 and the intel / radeon and amdgpu kernel DRM drivers.

Right, I will do that.  Does anyone know why the 2 ms delay is
necessary?

Thanks.