8beef8ccd0
We checked that the content size was appropriately painted in the stage, but didn't take into account that the size of the sampled texture region, meaning that when stage views were scaled, we'd think that we would draw a texture scaled, as e.g. a 200x200 sized texture with buffer scale 2 would have the size 100x100. When stage views were not scaled, we'd apply a geometry scale meaning it'd end up as 200x200 anyway, thus pass the check, but when stage views are scaled, it'd still be painted as a 100x100 shaped texture on the stage, thus failing the are-we-unscaled test. Fix this by comparing the transformed paint size with the sampled size, instead of the paint size again, when checking whether we are being painted scaled or not. For example, when stage views are scaled, our 200x200 buffer with buffer scale 2, thus content size 100x100 will transform to a 200x200 paint command, thus passing the test. For non-scaled stage views, our 200x200 buffer with buffer scale 2 thus content size 100x100 will also transform into a 200x200 paint command, and will also pass the check, as the texture sample region is still 200x200. Fixes: https://gitlab.gnome.org/GNOME/mutter/issues/804 https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1124
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.