HDR support in Wayland/Weston

[Kai-Uwe]

Am 07.03.19 um 11:15 schrieb Michel Dänzer:
> On 2019-03-07 8:05 a.m., Chris Murphy wrote:
>> On Wed, Mar 6, 2019 at 10:02 PM Graeme Gill <graeme2 at argyllcms.com> wrote:
>>> [ And why should Linux/Wayland be crippled compared to
>>>   every other system ? I can and do do things like fire up
>>>   a test patch display using ArgyllCMS/dispwin in one corner of my
>>>   screen while running ArgyllCMS/spotread in another window to
>>>   measure the patches. There's no reason not to, and every reason
>>>   to be able to. ]
>> Of course. It can take 5-30 minutes to do a calibration and
>> characterization. In particular if I have 2, 3 or even 4 displays
>> connected I'd want to calibrate them in sequence while the others are
>> being used for useful tasks.
> It sounds like KMS leases could be a pretty good fit for a calibration
> application. It can lease each output individually from the Wayland
> compositor and fully control it using KMS APIs, while the Wayland
> compositor continues running normally on other outputs.

I am afraid, this concept reads quite exotic for me non kernel
developer. Would you mind elaborating on that feature without some
example code or reference on how to write such and how it integrates in
a DE.

thanks,
Kai-Uwe Behrmann