3187fe8ebc
In commit 4c1fde9d MetaCullable related code was moved out of MetaShapedTexture into MetaSurfaceActor. While generally desirable, this removed drawing optimizations in MetaShapedTexture for partial redraws. The common case for fully obscured actors was still supposed to work, but it was now discovered that it actually did not. This commit revert parts of 4c1fde9d: it reintroduces clipping to MetaShapedTexture but leaves all culling and actor related logic in MetaSurfaceActor. Thanks to Daniel van Vugt for uncovering the issue. Fixes https://gitlab.gnome.org/GNOME/mutter/-/issues/850 Fixes https://gitlab.gnome.org/GNOME/mutter/-/issues/1295 https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1326
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.