4d3e804391
A plane is one of three possible: primary, overlay and cursor. Each plane can have various properties, such as possible rotations, formats etc. Each plane can also be used with a set of CRTCs. A primary plane is the "backdrop" of a CRTC, i.e. the primary output for the composited frame that covers the whole CRTC. In general, mutter composites to a stage view frame onto a framebuffer that is then put on the primary plane. An overlay plane is a rectangular area that can be displayed on top of the primary plane. Eventually it will be used to place non-fullscreen surfaces, potentially avoiding stage redraws. A cursor plane is a plane placed on top of all the other planes, usually used to put the mouse cursor sprite. Initially, we only fetch the rotation properties, and we so far blacklist all rotations except ones that ends up with the same dimensions as with no rotations. This is because non-180° rotations doesn't work yet due to incorrect buffer modifiers. To make it possible to use non-180° rotations, changes necessary include among other things finding compatible modifiers using atomic modesetting. Until then, simply blacklist the ones we know doesn't work. https://gitlab.gnome.org/GNOME/mutter/issues/548 https://gitlab.gnome.org/GNOME/mutter/merge_requests/525 |
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| .gitlab-ci | ||
| clutter | ||
| cogl | ||
| data | ||
| doc | ||
| po | ||
| src | ||
| tools | ||
| .gitignore | ||
| .gitlab-ci.yml | ||
| config.h.meson | ||
| COPYING | ||
| meson_options.txt | ||
| meson.build | ||
| mutter.doap | ||
| NEWS | ||
| README.md | ||
Mutter
Mutter is a Wayland display server and X11 window manager and compositor library.
When used as a Wayland display server, it runs on top of KMS and libinput. It implements the compositor side of the Wayland core protocol as well as various protocol extensions. It also has functionality related to running X11 applications using Xwayland.
When used on top of Xorg it acts as a X11 window manager and compositing manager.
It contains functionality related to, among other things, window management, window compositing, focus tracking, workspace management, keybindings and monitor configuration.
Internally it uses a fork of Cogl, a hardware acceleration abstraction library used to simplify usage of OpenGL pipelines, as well as a fork af Clutter, a scene graph and user interface toolkit.
Mutter is used by, for example, GNOME Shell, the GNOME core user interface, and by Gala, elementary OS's window manager. It can also be run standalone, using the command "mutter", but just running plain mutter is only intended for debugging purposes.
Contributing
To contribute, open merge requests at https://gitlab.gnome.org/GNOME/mutter.
The coding style used is primarily the GNU flavor of the GNOME coding
style
with some minor additions such as preferring stdint.h types over GLib
fundamental types, and a soft 80 character line limit. However, in general,
look at the file you're editing for inspiration.
Commit messages should follow the GNOME commit message guidelines. We require an URL to either an issue or a merge request in each commit.
License
Mutter is distributed under the terms of the GNU General Public License, version 2 or later. See the COPYING file for detalis.