https://bugs.kde.org/show_bug.cgi?id=478967
Bug ID: 478967
Summary: Wrong contrast on screenshots in the Wayland session
Classification: Applications
Product: Spectacle
Version: 24.01.85
Platform: Other
OS: Other
Status: REPORTED
Severity: normal
Priority: NOR
Component: General
Assignee: noaha...@gmail.com
Reporter: k...@68degrees.no
CC: k...@david-redondo.de
Target Milestone: ---
Created attachment 164424
--> https://bugs.kde.org/attachment.cgi?id=164424&action=edit
Final Fantasy 14 screenshot taken with the in-game screenshot tool
SUMMARY
In the Wayland session, screenshots taken with Spectacle increases the contrast
of what is actually displayed on screen, making the resulting screenshot darker
than what it's supposed to be.
It's not just in the screenshot itself; activating rectangle select mode
slightly increases the contrast on all screens, until a screenshot is taken and
the Spectacle process has terminated.
To demonstrate, I'm going to add two images taken in Final Fantasy 14.
The first one is taken using the in-game screenshot tool, the second is with
Spectacle (capture single monitor mode), notice how the screenshot taken with
Spectacle is noticeably darker in some areas, especially the darker areas.
It's most noticeable in the shadows, and in darker scenes this is especially
problematic.
STEPS TO REPRODUCE
1. Begin a Plasma Wayland session.
2. Take a screenshot with Spectacle.
3. Compare the result with what you captured.
OBSERVED RESULT
The contrast is wrong, and the resulting screenshot is darker than it should
be.
EXPECTED RESULT
A lossless PNG without any modifications or defects.
SOFTWARE/OS VERSIONS
Linux: 6.6.8
KDE Plasma Version: 5.91.0
KDE Frameworks Version: 5.247.0
Qt Version: 6.7 Beta 1
ADDITIONAL INFORMATION
Also happens on Qt 6.6, does not happen in the X11 session.
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