0e0574a0b4
The only reason for `vfunc_paint` and `vfunc_pick` existing was to implement a culling optimization. Although that optimization actually made performance worse than none at all because it forced the painting and picking cycles to spend more time calling into JavaScript. Turns out we don't have to choose between native code and culling though. Just reimplement the culling using native ClutterActor functions and we get the benefits of both. Performance on an i7-7700: Moving the cursor over the icon grid: Before: 70% CPU, 5.5ms per frame After : 60% CPU, 4.5ms per frame Scrolling the icon grid: Before: 60% CPU, 4.4ms per frame After : 50% CPU, 3.3ms per frame Helps with https://gitlab.gnome.org/GNOME/gnome-shell/issues/174
GNOME Shell
GNOME Shell provides core user interface functions for the GNOME 3 desktop, like switching to windows and launching applications. GNOME Shell takes advantage of the capabilities of modern graphics hardware and introduces innovative user interface concepts to provide a visually attractive and easy to use experience.
For more information about GNOME Shell, including instructions on how to build GNOME Shell from source and how to get involved with the project, see the project wiki.
Bugs should be reported to the GNOME bug tracking system.
License
GNOME Shell is distributed under the terms of the GNU General Public License, version 2 or later. See the COPYING file for details.