https://bugs.kde.org/show_bug.cgi?id=423533
Bug ID: 423533
Summary: Layer drawn incorrectly after some combinations of
blending modes
Product: krita
Version: 4.2.9
Platform: Manjaro
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: General
Assignee: krita-bugs-n...@kde.org
Reporter: gin...@gmail.com
Target Milestone: ---
Created attachment 129689
--> https://bugs.kde.org/attachment.cgi?id=129689&action=edit
sample file
SUMMARY
This both happens in 4.2.9 and master.
It seems that if we have 2 layers and set the top one to a mode that makes the
bottom layer only partially visible in the composition (like "Destination In"
or "Destination Atop"), when we change back the blending mode to normal or any
other that should show all the bottom layer, the bottom layer can be shown
cropped as if only some tiles where painted.
It seems that this is only a visualization problem and if the bottom layer is
hidden and shown again with the eye icon the layer is shown correctly again.
The main problem is that if the image is saved when the layer is being
displayed wrongly, the layer is saved with the artifact.
STEPS TO REPRODUCE
1. Open the attached file in krita
2. Set the blending mode of "Layer 2" to Destination In or Destination Atop
3. Set the blending mode of "Layer 2" back to Normal
OBSERVED RESULT
"Layer 1" is cropped.
See https://imgur.com/a/aRPgGNY
EXPECTED RESULT
"Layer 1" should not be cropped
SOFTWARE/OS VERSIONS
Operating System: Manjaro Linux
KDE Plasma Version: 5.18.5
KDE Frameworks Version: 5.70.0
Qt Version: 5.15.0
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