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Bug 693434 - Fuzzy/blurry icons in application switcher (Alt+Tab)
Fuzzy/blurry icons in application switcher (Alt+Tab)
Status: RESOLVED OBSOLETE
Product: gnome-shell
Classification: Core
Component: app-switcher
3.6.x
Other Linux
: Normal normal
: ---
Assigned To: gnome-shell-maint
gnome-shell-maint
Depends on:
Blocks:
 
 
Reported: 2013-02-08 17:12 UTC by Robin Stocker
Modified: 2021-07-05 14:17 UTC
See Also:
GNOME target: ---
GNOME version: ---


Attachments
actual fuzzy icon (Evolution) (44.21 KB, image/png)
2013-02-08 17:12 UTC, Robin Stocker
Details
expected icon (Evolution, manually scaled to 96x96) (44.99 KB, image/png)
2013-02-08 17:13 UTC, Robin Stocker
Details
fuzzy icons (69.91 KB, image/png)
2013-03-04 00:24 UTC, Allan Day
Details

Description Robin Stocker 2013-02-08 17:12:25 UTC
Created attachment 235522 [details]
actual fuzzy icon (Evolution)

The icons in the application switcher seem to be scaled badly, so that they are fuzzy.

The two attached screenshots can be compared by quickly switching between them. The first is a screenshot of the actual icons.

The second is a screenshot where the icon of Evolution has been replaced by a manually scaled one (to 96x96).

What's noticeable is that the height is the same, but the width is wider for the fuzzy one.

GNOME Shell 3.6.2
Comment 1 Robin Stocker 2013-02-08 17:13:18 UTC
Created attachment 235523 [details]
expected icon (Evolution, manually scaled to 96x96)
Comment 2 Allan Day 2013-03-02 15:06:51 UTC
Someone suggested that this could be because the icon isn't pixel aligned. I checked and indeed it isn't. Couldn't say for sure that that's the reason though.
Comment 3 Allan Day 2013-03-04 00:24:38 UTC
Created attachment 237918 [details]
fuzzy icons

But is pixel alignment really the issue? I just repeated Robin's experiment: the top row of icons is a screenshot. The bottom row are 256x256px (png) icons, reduced in size to 96x96 (using Inkscape). Every icon looks crisper in the bottom row.
Comment 4 Allan Day 2013-03-04 09:09:44 UTC
Note that the screenshot in the previous comment is fuzzier than the actual screen (what's up with that, anyway?)
Comment 5 Jakub Steiner 2013-03-10 10:23:19 UTC
Depending on the canvas dimensions/offset a bitmap can shift by a subpixel thus being rendered fuzzy exported, despite looking alright on canvas.
Comment 6 Robin Stocker 2013-09-02 10:57:00 UTC
In gnome-shell 3.8.4, the problem seems to be gone. I'm hesitant to close the bug though, because it would be good to know WHY the problem no longer exists.
Comment 7 GNOME Infrastructure Team 2021-07-05 14:17:30 UTC
GNOME is going to shut down bugzilla.gnome.org in favor of  gitlab.gnome.org.
As part of that, we are mass-closing older open tickets in bugzilla.gnome.org
which have not seen updates for a longer time (resources are unfortunately
quite limited so not every ticket can get handled).

If you can still reproduce the situation described in this ticket in a recent
and supported software version, then please follow
  https://wiki.gnome.org/GettingInTouch/BugReportingGuidelines
and create a new ticket at
  https://gitlab.gnome.org/GNOME/gnome-shell/-/issues/

Thank you for your understanding and your help.