SUMMARY The blur effect updates only partially for a surface, which is especially noticeable during video playback and low blur intensity + high opacity values STEPS TO REPRODUCE 1. Edit /usr/share/plasma/desktoptheme/default/plasmarc to remove the contrast effect for better visibility (set it to false) 2. Reload the Breeze theme 3. Set the blur and noise strength values to the 7th position 4. Open a window that's constantly updating (like Firefox/Chromium/whatever playing a video) 5. Open Konsole, enable the background blur effect and set the background opacity to ~40-50% 6. Move the Konsole window so that it's on top of the updating window but doesn't fully cover it OBSERVED RESULT There is a seam where the blur effect "cuts off" where the underlying window's edges end due to partial effect repaints EXPECTED RESULT There should be no seam visible at all SOFTWARE/OS VERSIONS Operating System: Arch Linux KDE Plasma Version: 6.5.5 KDE Frameworks Version: 6.22.0 Qt Version: 6.10.2 Kernel Version: 6.18.7-arch1-1 (64-bit) Graphics Platform: Wayland Processors: 16 × AMD Ryzen 7 5800X 8-Core Processor Memory: 64 GiB of RAM (62.7 GiB usable) Graphics Processor: AMD Radeon RX 9070
Created attachment 189250 [details] blur effect artifact Here's what the artifact looks like
IIRC some damage tracking changes meant the blur effect doesn't expand the repaint area like it used to anymore. We need to find out how to solve that better.