Transparency or saturation issue with image while adding landmarks on MacOS
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Assessment
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Newbie friendliness
- 48/100
Research direction
Start by reproducing the issue in KLayout’s landmarks editor on macOS, using the video’s workflow: open an image, place a landmark, and zoom. The payload names no source files or tests, so trace the editor’s image rendering and repaint path from that workflow. Done means the image remains visible while placing landmarks and zooming, including with the reported image formats.
Written by the indexing model from the issue text.
Description
This issue seems related to #1944.
An issue occurs with rendering/repaint in the landmarks editor on MacOS. When I try to define image landmarks, the image viewport turns white unless I place a landmark. After placing a landmark, the image becomes visible again, but zooming causes the image area to turn white again. This makes accurate landmark placement quite tedious. I use KLayout a lot with SEM images, so I am including a video of the issue when I try working with an arbitrary SEM image from the internet.
https://github.com/user-attachments/assets/c34a8acb-47d2-435b-bcfb-88b7cf59a6c4
More info:
- Environment: MacOS Tahoe 25.6
- Architecture: Apple Silicon M4
- KLayout version: 0.30.8
- It has happened to me with
.pngand.bmpimages. In the video example I use a.jpegimage and it still occurs.
Please let me know if there is a debug log, rendering backend setting, or test build I should try.
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