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Pekka Paalanen 442dcc7855 renderer/native: Valid formats for secondary dumb buffers 
When setting up an output on a secondary GPU with the CPU copy mode,
allocate the dumb buffers with a DRM format that is advertised supported
instead of hardcoding a format.

Particularly, DisplayLink devices do not quite yet support the hardcoded
DRM_FORMAT_XBGR8888. The proprietary driver stack actually ignores the
format assuming it is DRM_FORMAT_XRGB8888 which results the display
having red and blue channels swapped. This patch fixes the color swap
right now, while taking advantage if the driver adds support for XBGR
later.

The preferred_formats ordering is somewhat arbitrary. Here it is written
from glReadPixels point of view, based on my benchmarks on Intel Haswell
Desktop machine. This ordering prefers the format that was hardcoded
before.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/341
2019-01-30 12:53:20 +00:00
.gitlab-ci cogl/path: Don't depend on GL/glu.h 2019-01-22 19:06:14 +01:00
clutter clutter/evdev: Set the backend keymap before using it 2019-01-30 11:27:57 +01:00
cogl cogl: Fix builds with G_DISABLE_ASSERT 2019-01-25 00:48:12 +01:00
data Drop Autotools 2019-01-10 11:50:54 -02:00
doc Remove obsolete .cvsignore files 2019-01-10 11:50:54 -02:00
po Remove po/ChangeLog 2019-01-12 14:53:13 +01:00
src renderer/native: Valid formats for secondary dumb buffers 2019-01-30 12:53:20 +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 gitlab-ci.yml: Change build step build type to debugoptimized 2019-01-23 21:05:51 +00:00
config.h.meson build: Make libcanberra no longer optional 2019-01-08 15:58:11 +01:00
COPYING Updated obsolete FSF postal address in COPYING 2014-01-12 08:44:30 +07:00
meson_options.txt build: Make libcanberra no longer optional 2019-01-08 15:58:11 +01:00
meson.build meson: Hide symbols by default in clutter 2019-01-23 13:03:40 +00:00
mutter.doap Replace Bugzilla by Gitlab URL in DOAP file 2018-12-15 23:50:01 +01:00
NEWS Bump version to 3.31.4 2019-01-10 20:07:55 +01:00
README.md README: Mention usage by Gala 2018-11-08 17:11:27 +01:00

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.

License

Mutter is distributed under the terms of the GNU General Public License, version 2 or later. See the COPYING file for detalis.