b45b03b063
Currently when a window is requested to be unredirected, the corresponding pixmap and texture can get cleared before the window has been unredirected by the X server. This can result in the windows behind showing through which causes a short flicker after showing an OSD or notification when a fullscreen application is running. Fix this by ensuring the texture is only cleared after the window has been unredirected by the server. Similarly when the window is being redirected again, the pixmap of the window can only be requested after the redirection has been completed by the server. This currently can happen in a different frame than the next redraw of the actor resulting in an empty texture until the next redraw. Fix this by queuing a redraw immediately after redirecting. Fixes https://gitlab.gnome.org/GNOME/mutter/issues/997
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.