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72 lines
2.6 KiB
Markdown
72 lines
2.6 KiB
Markdown
# Mutter
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Mutter is a Wayland display server and X11 window manager and compositor library.
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When used as a Wayland display server, it runs on top of KMS and libinput. It
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implements the compositor side of the Wayland core protocol as well as various
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protocol extensions. It also has functionality related to running X11
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applications using Xwayland.
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When used on top of Xorg it acts as a X11 window manager and compositing manager.
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It contains functionality related to, among other things, window management,
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window compositing, focus tracking, workspace management, keybindings and
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monitor configuration.
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Internally it uses a fork of Cogl, a hardware acceleration abstraction library
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used to simplify usage of OpenGL pipelines, as well as a fork of Clutter, a
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scene graph and user interface toolkit.
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Mutter is used by, for example, GNOME Shell, the GNOME core user interface, and
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by Gala, elementary OS's window manager. It can also be run standalone, using
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the command "mutter", but just running plain mutter is only intended for
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debugging purposes.
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## Contributing
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To contribute, open merge requests at https://gitlab.gnome.org/GNOME/mutter.
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It can be useful to look at the documentation available at the
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[Wiki](https://gitlab.gnome.org/GNOME/mutter/-/wikis/home).
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The API documentation is available at:
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- Meta: <https://gnome.pages.gitlab.gnome.org/mutter/meta/>
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- Clutter: <https://gnome.pages.gitlab.gnome.org/mutter/clutter/>
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- Cally: <https://gnome.pages.gitlab.gnome.org/mutter/cally/>
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- Cogl: <https://gnome.pages.gitlab.gnome.org/mutter/cogl/>
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- CoglPango: <https://gnome.pages.gitlab.gnome.org/mutter/cogl-pango/>
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## Coding style and conventions
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See [HACKING.md](./HACKING.md).
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## Git messages
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Commit messages should follow the [GNOME commit message
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guidelines](https://wiki.gnome.org/Git/CommitMessages). We require an URL
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to either an issue or a merge request in each commit. Try to always prefix
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commit subjects with a relevant topic, such as `compositor:` or
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`clutter/actor:`, and it's always better to write too much in the commit
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message body than too little.
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## Default branch
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The default development branch is `main`. If you still have a local
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checkout under the old name, use:
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```sh
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git checkout master
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git branch -m master main
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git fetch
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git branch --unset-upstream
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git branch -u origin/main
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git symbolic-ref refs/remotes/origin/HEAD refs/remotes/origin/main
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```
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## License
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Mutter is distributed under the terms of the GNU General Public License,
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version 2 or later. See the [COPYING][license] file for detalis.
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[bug-tracker]: https://gitlab.gnome.org/GNOME/mutter/issues
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[license]: COPYING
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