0.83: Zoom isn't working properly

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Zera
Posts: 2
Joined: Sat Oct 08, 2016 8:30 pm

0.83: Zoom isn't working properly

Post by Zera »

I've done a quick search, and this problem was reported as early as April: http://newsgroup.xnview.com/viewtopic.p ... 9&p=131627 , but it seems nothing has been done about it thus far (or it was and it got broken again). The issue is that the image gets distorted when zooming in and out (noticeable "tearing" defects in certain areas of the image). This does not happen in the classic version.

I uploaded a screenshot of the issue, the red circled areas show the defects. The yellow area is supposed to be a perfect circle, so it's not being resampled properly (I think this is called a rounding error, but I might be mistaken). I am using the 64-bit version, if that makes a difference.
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Zera
Posts: 2
Joined: Sat Oct 08, 2016 8:30 pm

Re: 0.83: Zoom isn't working properly

Post by Zera »

It looks like the issue is already on the tracker: Issue 642

The priority is set as "high" and the severity as "major", yet it's still not fixed? That issue has been there for over a year.
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helmut
Posts: 8704
Joined: Sun Oct 12, 2003 6:47 pm
Location: Frankfurt, Germany

Re: 0.83: Zoom isn't working properly

Post by helmut »

I've tried this out with a similar image and could reproduce in XnView MP 0.76. From what I can see this problem is fixed in XnView MP 0.84. Could you please try and confirm, Zera?

Related bug report: 0.68: Discontinuities when downscaling large images.
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