5e4cb54bb5
The actor-shader-effect test actors are 50px wide, but we check the 51st pixel. This went along undetected until "clutter: Avoid rounding compensation when invalidating 2D actors" because the paint volumes were made slightly bigger and the shaders paint all over them (I guess nobody noticed those actors being actually ~52px wide). Update the test to check the middle of the opposite edge, so we keep neatly rounded numbers. (cherry picked from commit 1d73533f786b8f83fcffae7e5f5965d3b1f4e57a)
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 GNOME Shell, the GNOME core user interface. It can also be run standalone, using the command "mutter", but just running plain mutter is only intended for debugging purposes.
License
Mutter is distributed under the terms of the GNU General Public License, version 2 or later. See the COPYING file for detalis.