[PATCH v2 0/3] Experimental freesync video mode optimization

[Christian König]

Am 11.12.20 um 14:58 schrieb Michel Dänzer:
> On 2020-12-14 9:57 p.m., Christian König wrote:
>> Am 11.12.20 um 13:20 schrieb Pekka Paalanen:
>>> On Fri, 11 Dec 2020 11:28:36 +0100
>>> Christian König <ckoenig.leichtzumerken at gmail.com> wrote:
>>>
>>>> I think the general idea we settled on is that we specify an earliest
>>>> display time for each frame and give feedback to the application 
>>>> when a
>>>> frame was actually displayed.
>>> That is indeed something completely different, and feels like it would
>>> be several years in the future, while the proposed scheme or the
>>> min/max properties could be done fairly quickly. But I'm not in a 
>>> hurry.
>>
>> X11 already supports that with the DRI3 extension. Also see VDPAU 
>> present and the Vulkan extension for reference application API 
>> implementations, so that stuff is already present.
>
> I suspect you mean the Present extension, specifically 
> PresentOptionUST. There is no working implementation of this yet (the 
> xserver tree has never had any code which would even advertise 
> PresentCapabilityUST, let alone do anything with a timestamp passed in 
> by the client).

Good point, what I wanted to say is that this is already specified in 
those extensions.

What we are missing is somehow wiring it all together and see how it works.

Christian.