In 5.0.0-beta1 (can't currently specify this version in the tracker): SUMMARY The performance of the in-stack preview of the transform tool appears to degrade over a random period of time/usage. STEPS TO REPRODUCE 1. Using the Pixel Art Fill brush with the Nearest Neighbor transform algorithm of the transform tool, perform random series of strokes, freehand selections, and transformations over a few minutes. OBSERVED RESULT After a certain point, performance becomes a lot choppier with single-core usage suddenly starting to spike, even with very small transformations. Using a new layer works around this degradation, but the old layer will still have degraded performance. EXPECTED RESULT Performance should be consistent over time. SOFTWARE/OS VERSIONS Linux/KDE Plasma: Debian sid KDE Plasma Version: 5.20.5 KDE Frameworks Version: 5.78.0 Qt Version: 5.12.11 (Appimage)
For some reason, I can no longer consistently reproduce this... I'll reopen this report if I encounter this problem again.
Okay this just happened to me again, so I'm reopening it.
I suspect either a memory leak, or a paint device that grows enormously out of bounds.
If this happens again, please save the file and make it available. I still suspect the latter, but without a file there isn't much we can do.
Dear Bug Submitter, This bug has been in NEEDSINFO status with no change for at least 15 days. Please provide the requested information as soon as possible and set the bug status as REPORTED. Due to regular bug tracker maintenance, if the bug is still in NEEDSINFO status with no change in 30 days the bug will be closed as RESOLVED > WORKSFORME due to lack of needed information. For more information about our bug triaging procedures please read the wiki located here: https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging If you have already provided the requested information, please mark the bug as REPORTED so that the KDE team knows that the bug is ready to be confirmed. Thank you for helping us make KDE software even better for everyone!
This bug has been in NEEDSINFO status with no change for at least 30 days. The bug is now closed as RESOLVED > WORKSFORME due to lack of needed information. For more information about our bug triaging procedures please read the wiki located here: https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging Thank you for helping us make KDE software even better for everyone!