0.98.1: Pictures are a pixelated mess with non-bilinear zoom

Reported bugs that have been closed and/or resolved

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Gingerbread Guy
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0.98.1: Pictures are a pixelated mess with non-bilinear zoom

Post by Gingerbread Guy »

XnView MP 0.98.1 64-bit
Windows 10 Pro version 20H2

Pictures are extremely pixelated when opened in full screen from file explorer.

Effect: display glitch

To reproduce:
1. Open the attached bugged.png from file explorer, so that it opens in full screen.

Actual behavior: the image is a pixelated mess, as shown in the screenshot fullscreen.png

Expected behavior: the image is displayed correctly, like in the previous version.

I'm not able to pin down what triggers this.
* It happens with most but not all images. I've attached fine.gif that doesn't trigger the issue.
* If I use the mouse wheel to switch to another image, then back again, it displays fine.
* With my usual settings, simply switching Settings - View, High zoom quality: Zoom-out & Zoom-in, to Bilinear makes the problem go away.
* If I start over with fresh settings, then there's no issue with non-bilinear zoom, so the problem must lie elsewhere. I have too many custom settings to start over, or to determine which one is at fault without some guidance.
Attachments
fullscreen.png
fine.gif
fine.gif (61.06 KiB) Viewed 1916 times
bugged.png
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xnview
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Re: 0.98.1: Pictures are a pixelated mess with non-bilinear zoom

Post by xnview »

:bugconfirmed: Thanks to your detailed description I can reproduce the problem.
Pierre.
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Gingerbread Guy
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Re: 0.98.1: Pictures are a pixelated mess with non-bilinear zoom

Post by Gingerbread Guy »

Thank you for tracking it down and fixing it so quickly in the upcoming version :)
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xnview
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Re: 0.98.1: Pictures are a pixelated mess with non-bilinear zoom

Post by xnview »

This problem is supposed to be fixed in XnView MP 0.98.2. Please check and confirm the bug fix here.
Pierre.
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Gingerbread Guy
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Re: 0.98.1: Pictures are a pixelated mess with non-bilinear zoom

Post by Gingerbread Guy »

* I can no longer reproduce the issue with the aforementioned image in full screen.
* Images (including the one in the original report) look pixelated at 100% size in the preview pane.
* Other images are still pixelated in full screen. I've attached an example.
1089_Backseat_Hello_4x5_960.png
screenshot_01.png
screenshot_02.png
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xnview
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Re: 0.98.1: Pictures are a pixelated mess with non-bilinear zoom

Post by xnview »

Gingerbread Guy wrote: Tue Feb 23, 2021 4:18 am * Images (including the one in the original report) look pixelated at 100% size in the preview pane.
* Other images are still pixelated in full screen. I've attached an example.
In Preview of browser? You click on this picture, and you have the problem?
Pierre.
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Gingerbread Guy
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Re: 0.98.1: Pictures are a pixelated mess with non-bilinear zoom

Post by Gingerbread Guy »

Sorry about the very late reply. In 0.98.4 all aforementioned issues appear to be gone. Thank you very much.
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