Hi everyone,
Date: Wednesday June 14th 2023
Attending: Martin, René, Mikekov, Nicco, Tav, Jonathan, Julia
Johannesen
Next Meeting: Thursday June 22nd 2023
Tav has been investigating color management as well as all the Gtk4
work. Tav, showed us a Firefox bug that doesn't apply the profile
correctly, using the Red to Green profile on the screen showed only img
tags were flipped. But the rest of the web page's colors are not
flipped. Martin suggest that if the ICC profile is applied twice then
you would get a complete inversion in Firefox showing normal colors.
This may or may not be the issue in Firefox, but it brings us to
Inkscape. Double correction may effect us in Inkscape when we set a
screen profile. Between wayland, x11, win32, osx and how Inkscape
transforms it's own canvas for rendering. Pulling in ICC profiles
automatically from the screen seems like the wrong approach anyway
since the screen should already be color corrected anyway and almost
guarantees a double conversion.
Tav would like us to eventually end up with multiple monitor support in
our configuration settings and allow per monitor ICC profiles. But only
manually. Some monitor features are only supported in Wayland, so x11
may not detect the monitor the app is on correctly, Tav is still
researching the issues.
Martin wanted to talk about a simplified story of color management to
help himself and other developers understand what it is color
management is for, and hopefully allow us to know the terms. He says at
the moment he imagines three basic sections of color management in
Inkscape. The screen Profile which is typically in RGB changes the
canvas rendering, The Device Profile which is used for PDF output (when
we support that) and showing out of gamut errors on the screen and the
individual Color Selector profiles which aren't anything to do with
either displaying colors and are only sometimes important for printing.
Their first job is to allow the user to select colors within the color
space, say selecting a CMYK color profile would allow the user to
select a CMYK color reliably. The second function of individual color
profiles is to select spot colors and unique inks, foils, etc. this
information IS passed onto PDF output, but is also important to let the
user select for example how much of that ink to show for example.
Tav says everyone is confused about color management online, not just
in Inkscape. So it's important for us to understand the whole system
and hopefully write some documentation about it.
René is assuming control of the windows CI builder. The last
contributor who was interested was a long time ago, so René is taking
control of it. For a first step he's taken all the tutorials, guides
and all the things we tell users about how to do things for windows.
This is used in René's new GitHub account which builds Inkscape using
the msys2 on the GitHub CI builders. GitHub was used because the
machines are more powerful and are set up is better. For example using
ccache and take a lot less time to run and even then it's 20 minutes
for each correction.
A new project has been created in GitLab which collects all the deps
into an archive so we have a mechanism to counteract the rolling
release model in msys2 which causes us a lot of rolling pain. Pinning
the versions in msys to make the builds more dependable during
development processes. Martin asked that this new project be moved to
the deps group in GitLab. René's GitLab now has a new build step which
is being tested for a few weeks to get used to it. This should fix the
hacky setup we currently have with rerunning builds when they quit half
way through. We should end up with two separate jobs. Estimated time
frame for improvements is between 3 and 6 months depending on how
things go.
Jonathan thanks René for taking responsibility for the windows builds
and is wondering about how this effects Gtk4, which allows us to build
with mvs c++ native compiler which should be much faster than msys2. He
tried it with stock Gtk4 apps. Julia Jonannesen confirmed that she had
also tried the Gtk4 windows compile and got it to work.
Mikekov has been working on translations and improving the polish
translations but worked on some things for templates. Martin thanked
him for focusing on fixing the templating translations.
Nicco is getting back into the work schedule after taking a break and
is coming to the end of the contract and has only a week or two of work
left. He's focusing on documentation and wrapping up where the project
has finally ended up. We'll talk about a review meeting soon.
Martin, after taking a week off, has been working on a draft feature
that allows extensions authors to add pre-processing actions which take
the svg and change it, or augment it with information only inkscape
knows about. Like bounding boxes, text paths. As well as refactoring
the svg2 to svg1.1 compatibility code which are all converted into
actions. Also been working on tidying up remaining issues and focusing
on bugs reported by his patreons for the 1.3 release.
--------------
The team spent the last ten minutes of the meeting looking at merge
requests. First on the back-port proposed requests and second on some
older WIP requests which are now no longer marked as draft. These are
being closed if they are very old, but can be re-opened if needed.
Thanks for coming everyone!
Best Regards, Martin Owens
