1.12.1: 100% zoom affected by Zoom Out Anti-Aliasing setting

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ddd
Posts: 2
Joined: Tue Oct 06, 2026 3:44 pm

1.12.1: 100% zoom affected by Zoom Out Anti-Aliasing setting

Post by ddd »

This bug occurs on both Windows and Linux with 150% display scaling (macOS probably unaffected since it only supports 100% and 200%) and "Scale on HiDPI screen" disabled. With 100% zoom and Zoom Out Anti-Aliasing set to anything other than None, there is a missing column of pixels in the attached image (right in the middle) - other than that single column XnViewMP seems to perfectly map image pixels to screen pixels as it should. With e.g. 100% or 200% scaling and/or Zoom Out Anti-Aliasing set to None, this does not occur.
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user0
XnThusiast
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Joined: Sat May 09, 2015 9:37 am

Re: 1.12.1: 100% zoom affected by Zoom Out Anti-Aliasing setting

Post by user0 »

ddd
Posts: 2
Joined: Tue Oct 06, 2026 3:44 pm

Re: 1.12.1: 100% zoom affected by Zoom Out Anti-Aliasing setting

Post by ddd »

That is a bug report for a qt5-based version and seems like a combination (and a mess, honestly) of several different things/issues. I am pretty sure I have only started noticing this with the qt6-based beta builds.

Anyway, this report has a concrete settings combination that causes the (single) reported issue on the attached example image (both in Windows and Linux, so it should be universally reproducible - with the exception of macOS).