https://bugs.kde.org/show_bug.cgi?id=480486
Bug ID: 480486
Summary: regression: framerate shifting
Classification: Applications
Product: digikam
Version: 8.2.0
Platform: Microsoft Windows
OS: Microsoft Windows
Status: REPORTED
Severity: normal
Priority: NOR
Component: Thumbs-Album
Assignee: digikam-bugs-n...@kde.org
Reporter: digi...@k9k.net
Target Milestone: ---
SUMMARY
With a high framerate display (144Hz) and G-SYNC enabled, mouse pointer
movement over thumbnails triggers framerate stuttering for about a second. This
only happens when transitioning to a thumbnail. This issue wasn't present in
8.0.0.
STEPS TO REPRODUCE
1. Start digikam and wait for albums to load and any scans to finish
2. In thumbnail or preview windows, hover over the menu or other sidebars and
move the mouse pointer quickly in circles to observe normal mouse
smoothness/framerate
3. Move pointer over a thumbnail and move pointer in a circle as before,
observe duration of slow framerate
4. Move pointer over another thumbnail moving mouse as before and observe
framerate
OBSERVED RESULT
When a thumbnail is first hovered over there is about 1 second of slow
framerate before normal framerate returns, this happens for each subsequent
thumbnail hover.
EXPECTED RESULT
No framerate loss/shift when hovering between thumbnails
SOFTWARE/OS VERSIONS
Windows: 11 Pro - Version 10.0.22621 Build 22621
Qt Version: 6.6.0
ADDITIONAL INFORMATION
- Switching to fullscreen vs fullscreen and windowed GSYNC application doesn't
make any difference
- Trying to lock the framerate causes brief black frames when hovering between
thumbnails
- Albums contain both jpg. and CR3. files
- Does not happen when another window is in the foreground
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