HDR support in Wayland/Weston

Florian Höch lists+wayland-devel at hoech.org
Thu Mar 7 12:21:42 UTC 2019

Am 07.03.2019 um 05:26 schrieb Chris Murphy:
> Hmmm. For a while now we've had display calibration+profiling
> applications compel full screen mode

While some calibration/profiing applications are able to display a
fullscreen window for the patch area (some may even default to it), I
know none that implement their own GUI toolkit to do so (which, as I
understand it, is what it would come down to if it were using something
low-level like KMS/DRM). They instead use an existing GUI toolkit of
choice to achieve this (e.g. DisplayCAL uses GTK under Linux, X-Rite i1
Profiler and basICColor use Qt, even though the latter two are not
available on Linux).
There is a big difference between having a "fullscreened" window with
normal GUI elements on it, or basically having to roll your own GUI
framework just to achieve the same. The latter IS a non-starter if there
ever was one.
Also, as an aside, fullscreen window (for the patch area) is not
necessarily desirable for various reasons. Incidentally, many
calibration/profiling apps don't use it by default (e.g. basICColor,
DisplayCAL, etc).


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