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A repository that has original source for patches used in the Arch User Repository package called "mutter-performance". https://aur.archlinux.org/packages/mutter-performance
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Georges Basile Stavracas Neto 7d25cbe87f Use graphene_ray_t to pick actors
This commit introduces a few important changes in order to
acommodate graphene_ray_t. Most of them are positive changes,
so don't panic :)

The first very visible change is that neither the actor box
nor the clip rectangles are projected before being pushed.
This required changing the parameters of the related functions
at both ClutterPickContext, and ClutterPickStack, to receive
boxes instead of vertices. These rectangles are projected on
demand now, so in the best case (first actor picked) only
one projection happens; and in the worst case, it projects
as much as it does now.

The second important change is that there are no more checks
for axis-alignment anymore. That's because picking now happens
in 3D space, using triangles.

Talking about triangles in 3D space, this is what is used now
for picking. We break down each actor rectangle in 2 triangles,
and check if the projected pick point is inside any one of them,
of if the ray intersects any one of them. The same check happens
for the clip rectangles.

Checking the projected pick point is both an optimization for the
2D case, and a workaround to graphene_ray_t problems with float
precision, which is specially visible on edges such as the top
bar.

https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1509
2020-10-26 10:19:01 -03:00
.gitlab/issue_templates gitlab: Add missing < in markdown comment tag 2020-02-14 03:10:28 +00:00
.gitlab-ci ci: Generate a cover report for the test suite 2020-10-15 10:18:44 +02:00
clutter Use graphene_ray_t to pick actors 2020-10-26 10:19:01 -03:00
cogl tests: Use ClutterStage "after-paint" instead of ClutterActor "paint" 2020-10-23 22:06:58 +02:00
data gschema/wayland: Do not disable the X Security extension 2020-10-09 13:53:08 +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 Portuguese translation 2020-10-24 14:06:06 +00:00
src clutter/actor: Remove '_paint' suffix from clutter_actor_should_pick_paint 2020-10-26 09:20:38 -03:00
subprojects build: bump ABI to sysprof-capture-4 2020-07-28 11:13:30 -07:00
tools tools: Remove obsolete ppa-magic.py 2018-11-30 11:12:12 +08:00
.gitignore build: bump ABI to sysprof-capture-4 2020-07-28 11:13:30 -07:00
.gitlab-ci.yml ci: Generate a cover report for the test suite 2020-10-15 10:18:44 +02:00
config.h.meson wayland: Set IO error exit handler 2020-10-21 18:57:13 +02:00
COPYING Updated obsolete FSF postal address in COPYING 2014-01-12 08:44:30 +07:00
meson.build wayland: Set IO error exit handler 2020-10-21 18:57:13 +02:00
meson_options.txt *: Fix spelling mistakes found by codespell 2020-08-29 09:10:31 +00:00
mutter.doap doap: Update list of maintainers 2019-10-16 12:33:47 +02:00
NEWS Bump version to 3.38.1 2020-10-05 19:55:19 +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.