https://bugs.kde.org/show_bug.cgi?id=432759
Bug ID: 432759
Summary: Artifacts when upscaling a VNC session
Product: krdc
Version: unspecified
Platform: Other
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: VNC
Assignee: uwol...@kde.org
Reporter: cedric.bregar...@free.fr
CC: aa...@kde.org
Target Milestone: ---
There are artifacts when upscaling a VNC session.
STEPS TO REPRODUCE
1. Start a VNC session with krdc. The remote desktop has a resolution of
1920x1080. The screen on which krdc is running has a resolution of 4k. The VNC
server can be krfb or tightvnc.
2. Maximize the krdc window and activate the upscaling (button Scale)
OBSERVED RESULT
Graphical artifacts sometimes appear on the screen. It seams to corresponds to
the edges of the part of the image which are refreshed. See the attachment
krdc_with_artifacts.jpg.
I have made a patch which fixes the problem. See attachment krdc_with_patch.jpg
for the result with the patch. The patch is attached and also available at:
EXPECTED RESULT
No artifacts.
SOFTWARE/OS VERSIONS
Linux/KDE Plasma:
(available in About System)
KDE Plasma Version: 5.20.5
KDE Frameworks Version: 5.78.0
Qt Version: 5.15.2
ADDITIONAL INFORMATION
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