32c99513c8
When calculating the resource scale of a clone source, we might end up in situations where we fail to do so, even though we're in a paint. A real world example when this may happen if this happens: * A client creates a toplevel window * A client creates a modal dialog for said toplevel window * Said client commits a buffer to the modal before the toplevel If GNOME Shell is in overview mode, the window group is hidden, and the toplevel window actor is hidden. When the clone tries to paint, it fails to calculate the resource scale, as the parent of the parent (window group) is not currently mapped. It would have succeeded if only the clone source was unmapped, as it deals with the unmapped actor painting by setting intermediate state while painting, but this does not work when the *parent* of the source is unmapped as well. Fix this by inheriting the unmapped clone paint even when calculating the resource scale. This also adds a test case that mimics the sequence of events otherwise triggered by a client. We can't add a Wayland client to test this, where we actually crash is in the offscreen redirect effect used by the window dimming feature in GNOME Shell. Fixes: https://gitlab.gnome.org/GNOME/mutter/-/issues/808 https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1147 |
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| .gitlab/issue_templates | ||
| .gitlab-ci | ||
| clutter | ||
| cogl | ||
| data | ||
| doc | ||
| meson | ||
| 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.