ee507d9ab2
In a multi-monitor setup there is a separate paint run for each monitor. If an actor doesn't intersect the first monitor painted then it is culled out for that monitor to save time. Unfortunately this would mean `clutter_actor_paint` was setting `is_dirty = FALSE` before the actor had yet been painted on any monitor. This meant that effects like `ClutterOffscreenEffect` were not receiving the flag `CLUTTER_EFFECT_PAINT_ACTOR_DIRTY` when they should have, and so would rightfully think they don't need to do a full internal invalidation. So `ClutterOffscreenEffect`, and probably other effects, did not repaint correctly unless on the first monitor in the list. The fix is to simply avoid setting `is_dirty = FALSE` on those paint runs where the actor has been culled out (`clutter_actor_continue_paint` wasn't called). It is only safe to clear the flag after `clutter_actor_continue_paint` has been called at least once per stage paint. Closes: https://gitlab.gnome.org/GNOME/gnome-shell/issues/1049 https://gitlab.gnome.org/GNOME/mutter/merge_requests/511 |
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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.