7d25cbe87f
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 |
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| .gitlab/issue_templates | ||
| .gitlab-ci | ||
| clutter | ||
| cogl | ||
| data | ||
| doc | ||
| meson | ||
| po | ||
| src | ||
| subprojects | ||
| tools | ||
| .gitignore | ||
| .gitlab-ci.yml | ||
| config.h.meson | ||
| COPYING | ||
| meson_options.txt | ||
| meson.build | ||
| mutter.doap | ||
| NEWS | ||
| 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.
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.