Tile-based rendering results in 1-pixel artefact
Bug #1379100 reported by
Martin Spacek
This bug affects 1 person
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
qpdfview |
Triaged
|
Low
|
Unassigned |
Bug Description
Hi Adam,
I recently noticed on one page of my thesis that at a certain resolution, a 1 pixel tall horizontal line is drawn where it shouldn't be. It's the same width as an image above it on the same page. Turning off tile-based rendering gets rid of this problem, and turning it back on restores the problem. This only happens at certain zoom levels, typically higher zoom. I've included a screenshot, the 1 page PDF extracted from the document, and a couple of qpdfview .conf files.
Cheers,
Martin
Changed in qpdfview: | |
importance: | Medium → Low |
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Hello Martin,
thanks for taking the time to report this! I can't think of a way the compositing could yield a black line, so I guess this depends on how we request the tiles from the various backends. (At least the Poppler API to render tiles has a warning attached that it was not tested extensively.) I guess the screenshot is created using the Poppler backend? Could you try whether it can also be produced using the Fitz backend? Thanks!
Best regards, Adam.