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

[Georgy Salnikov]

On Fri, 4 Apr 2025, Andrea paz via Cin wrote:

> A theoretical question: can CinGG be adapted to work in Wayland or is
> it impossible? Has XWayland limitation?

OK, perhaps I've understood. Your question is not about just color
correction according to an ICC profile, it is about direct rendering of HDR
where the complete tone mapping is to be done by the graphics driver (not by
NLE) which must support both CMS and HDR. This is quite different thing, I
know nothing about this perspective.

As long as I understand, the current photo (not video) processing software
for Linux works so.

It takes camera profile from somewhere.

ArgyllCMS calibrates the monitor and creates the monitor profile.

The photo processing program converts RAW photos from the camera, taking
into account the camera profile, to some kind of HDR (internal format) in
memory.

The photo processing program does all the effects through the photo
developing pipeline.

At the end, the program most probably, if there is no goal to save in EXR
format or 16-bit TIFF, converts it to sRGB. Then, either the program itself
applies the monitor profile to display the corrected image, or the program
simply displays, while the correction is performed by colord. And there is a
third possibility: the program applies the monitor profile, then colord
applies it for the second time, and the resulting colors come wrong.

_______________________________________________________________________________

Georgy Salnikov
NMR Group
Novosibirsk Institute of Organic Chemistry
Lavrentjeva, 9, 630090 Novosibirsk, Russia
Phone   +7-383-3307864
Email   sge at nmr.nioch.nsc.ru
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