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Daniel van Vugt 96f1d1b08d st-label: Keep labels fully pre-rendered on the GPU 
The performance of the icon grid was being hindered by a large number
of primitives (a few hundred) being copied from the CPU to the GPU on
each frame. This was first noticed in mutter#971 but we failed to
investigate all the issues at the time.

You can also see the high number using `COGL_DEBUG=batching` or
`COGL_DEBUG=disable-texturing`. So now it's obvious that high number is
every letter of every label being uploaded as a separate quad. Let's not
do that and instead treat the whole label as a single quad/texture.

Measured performance on an i7-7700 at UHD 3840x2160:

Journal entries per frame on the icon grid:
 * Before: 288 (18 KB copied from CPU to GPU)
 * After:   73 ( 4 KB copied from CPU to GPU)

Spring animation:
 * Before: 20-30 FPS, avg 22/peak 45 milliseconds per frame
 * After:  30-40 FPS, avg 14/peak 28 milliseconds per frame

Scrolling the icon grid:
 * Before: 15 FPS, 50 milliseconds per frame
 * After:  30 FPS, 28 milliseconds per frame

https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1329

(cherry picked from commit ae338af1e8)
2020-06-25 21:18:21 +02:00
.gitlab/issue_templates gitlab: Add issue templates 2020-01-07 22:42:46 +00:00
.gitlab-ci extensions-app: Move Extensions app to new subproject 2020-03-27 23:33:30 +00:00
.settings Clean out some eclipse artefacts 2019-02-13 04:39:26 +01:00
data theme: tone down weekend with events 2020-04-28 20:04:18 +00:00
docs/reference docs: Fix interface prefix for D-Bus docs 2019-07-25 15:56:20 +02:00
js overview: Define ANIMATION_TIME earlier 2020-06-24 16:03:41 +02:00
lint extensions-app: Move Extensions app to new subproject 2020-03-27 23:33:30 +00:00
man man: Update project website 2018-01-07 21:39:18 +01:00
meson extensionPrefs: Add application icon 2020-02-03 19:03:19 +01:00
po Update Kazakh translation 2020-06-25 04:34:15 +00:00
src st-label: Keep labels fully pre-rendered on the GPU 2020-06-25 21:18:21 +02:00
subprojects Bump version to 3.36.3 2020-06-03 01:38:26 +02:00
tests Use paint and pick context to get framebuffer 2019-12-03 19:07:15 +00:00
tools build: Remove Canberra dependency 2019-01-09 23:09:18 +00:00
.eslintrc.yml lint: Convert eslint JSON to YAML 2019-11-11 23:51:17 +00:00
.gitignore Add small gnome-shell-extension-prefs script 2020-04-30 00:57:27 +02:00
.gitlab-ci.yml ci: Build Extensions flatpak bundle 2020-03-27 23:33:30 +00:00
.gitmodules submodules: Replace non-functional git.gnome.org URL by GNOME Gitlab URL 2018-09-25 08:41:30 +02:00
config.h.meson Add check_cloexec_fds debug command 2018-07-30 23:11:41 +00:00
COPYING Changed obsolete FSF postal address. 2014-01-08 04:35:14 +07:00
gnome-shell.doap doap: Add Georges Stavracas as a maintainer 2019-12-18 15:24:38 -03:00
HACKING.md docs: Conform to coding style in HACKING guide 2020-01-06 19:53:21 +01:00
meson_options.txt extensions-app: Move Extensions app to new subproject 2020-03-27 23:33:30 +00:00
meson.build Bump version to 3.36.3 2020-06-03 01:38:26 +02:00
NEWS Bump version to 3.36.3 2020-06-03 01:38:26 +02:00
README.md README.md: Add contribution section 2019-02-13 20:37:39 +01:00

README.md

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.

Contributing

To contribute, open merge requests at https://gitlab.gnome.org/GNOME/gnome-shell.

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

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