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Simon McVittie e3b2b90c72 cogl: Don't allow creating sized textures with 0 pixels
A texture with no pixels isn't a useful thing to have, and breaks
assumptions elsewhere. For example, CoglFramebuffer assumes that after
a texture has been allocated, it will have width and height both greater
than 0.

In particular, this works around a crash when gnome-shell tries to blur a
background that hasn't yet had any space allocated for it - which it seems
is really an actor layout bug, but more robustness seems good to have.

Workaround for <https://gitlab.gnome.org/GNOME/gnome-shell/-/issues/2538>.

https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1172

Signed-off-by: Simon McVittie <smcv@debian.org>

(cherry picked from commit 37eda498f2)
2020-04-03 13:48:46 +02:00
.gitlab/issue_templates gitlab: Add missing < in markdown comment tag 2020-02-14 03:10:28 +00:00
.gitlab-ci ci: Adjust URL check 2020-02-26 06:28:46 +00:00
clutter clutter/master-clock-default: Sync timelines to hardware vsync 2020-04-03 10:59:36 +00:00
cogl cogl: Don't allow creating sized textures with 0 pixels 2020-04-03 13:48:46 +02:00
data display: Make check-alive timeout configureable 2020-02-23 17:28:57 +00:00
doc Add MetaGravity and replace X11 equivalent with it 2020-02-29 21:01:50 +00:00
meson build: Add postinstall script 2019-08-27 09:57:54 +00:00
po Update Romanian translation 2020-03-19 10:59:57 +00:00
src tests/actor-pick: Allocate actor before picking 2020-03-31 23:13:42 +00:00
tools tools: Remove obsolete ppa-magic.py 2018-11-30 11:12:12 +08:00
.gitignore project: Update gitignore 2019-01-10 11:50:54 -02:00
.gitlab-ci.yml ci: Add a new 'build-without-opengl-and-glx' step 2020-03-26 18:24:54 -03:00
config.h.meson wayland: Set up initialization X11 socket 2020-02-29 20:41:26 +00:00
COPYING Updated obsolete FSF postal address in COPYING 2014-01-12 08:44:30 +07:00
meson_options.txt meson: Expand on xwayland_initfd option description 2020-03-09 17:59:25 +00:00
meson.build Bump version to 3.36.1 2020-03-30 21:29:03 +02:00
mutter.doap doap: Update list of maintainers 2019-10-16 12:33:47 +02:00
NEWS Bump version to 3.36.1 2020-03-30 21:29:03 +02:00
README.md README: Add contribution section 2019-02-14 15:38:46 +01:00

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.