https://bugs.kde.org/show_bug.cgi?id=510412
Bug ID: 510412
Summary: Mesh transform interpolation looks blocky/shreded when
moving vertex spline legs
Classification: Applications
Product: krita
Version First 5.2.13
Reported In:
Platform: NixOS
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: Tools/Transform
Assignee: [email protected]
Reporter: [email protected]
Target Milestone: ---
Created attachment 185619
--> https://bugs.kde.org/attachment.cgi?id=185619&action=edit
blocky artifact example
SUMMARY
Mesh transform exhibits a strange blocky artifact that looks sort of like
faceted shearing when you move the vertex spline leg handles in certain
directions, particularly toward the opposite vertex on the same edge of the
mesh, and particularly along one of the canvas axes. Attached is a screenshot
of this effect.
Even though I pulled the legs to extreme distances to emphasize the effect,
even short pulls of the legs quickly starts exhibiting the artifact, and can
really shred up whatever you are transforming.
STEPS TO REPRODUCE
1. Draw something (or open an existing image).
2. Lasso select a region.
3. Select transform tool.
4. Select the mesh subtool.
5. Move one of the vertex spline legs toward the opposite vertex on the same
edge (usually this is at an angle that is already parallel with one of the
canvas axes).
OBSERVED RESULT
Result looks blocky and sheared.
EXPECTED RESULT
Result looks nice and smooth (like with the other transform subtools).
SOFTWARE/OS VERSIONS
Operating System: NixOS 25.11
KDE Plasma Version: 6.4.5
KDE Frameworks Version: 6.18.0
Qt Version: 6.9.2
Kernel Version: 6.16.9-zen1 (64-bit)
Graphics Platform: X11
Processors: 24 × AMD Ryzen 9 3900X 12-Core Processor
Memory: 64 GiB of RAM (62.7 GiB usable)
Graphics Processor: AMD Radeon RX 7900 XTX
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