[Cin] "Competitors" or do we want to stay alive?

[Andrew Randrianasulu]

пт, 4 апр. 2025 г., 21:35 Andrea paz <gamberucci.andrea at gmail.com>:

> @Georgy
> X11 supports CMS more or less well. Even I was able to profile the
> monitor and install it with colord. It's not full support like Windows
> or Apple has, but it's doable.
> For Wayland the big problem, why they didn't want to make a CMS, is
> its being decentralized, a protocol to which various software could
> interact by bringing their own version of CMS. The trouble is that a
> CMS must be centralized by definition, if everyone fakes their own
> implementation goodbye std.
> On Wayland, good programmers but bad color scientists, they didn't
> even know how to start. Then Valve created The Gamescope to be able to
> play games in HDR, and Wayland started from that to implement its CMS.
> The result is not a real CMS but just something for video games and
> movies. True, lately they seem to have figured out the problem and one
> can hope that they will be able to solve it.
>
> For the time being, the main developer said:...
> The color-management Wayland extension is enough for entertainment
> purposes like games and movies. However, it is not enough for
> professional color management needs including photo editing and print
> preview. The major missing piece is the ability to measure the display
> response. Every monitor is unique, and measuring is the only way to
> achieve reliably repeatable and accurate display behavior.
> ...
>
> Introduction to CMS in Wayland by the lead developer:
>
> https://www.collabora.com/news-and-blog/news-and-events/12-years-of-incubating-wayland-color-management.html
>
> A summary by Paalanem of everything that happened in the 12 years of
> development:
> https://gitlab.freedesktop.org/pq/color-and-hdr
>
> Old discussion on monitor profiling (in the thread, user Graeme Gill
> is ArgylCMS's developer):
> https://gitlab.freedesktop.org/pq/color-and-hdr/-/issues/27
>
> Wayland CMS implementation in Gnome:
> https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/4291
>
>
> A theoretical question: can CinGG be adapted to work in Wayland or is
> it impossible? Has XWayland limitation?
>



IF i understand correctly basically screencapture, user input,
monitor/compositor all tied to X11. There are (or were) different output
modules (to DV tape, to mjpeg card), so I guess SOME abstraction between
core and video i/o exist in cinelerras. Right now cingg reported to work
over Xwayland but I do not know how any (external) color management etc
work in this case. Under wayland you need EGL not GLX and cingg uses rather
obscure Xserver pbuffer mechanism.  Not sure how easy/impossible is to
rewrite it for EGL.

I do not even know where such questions should be asked now! On xorg-devel?
in gitlab issues?

cc xorg-devel because I have them in my auto-address book in gmail.
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