Fake white line when viewing image

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BK201
Posts: 91
Joined: Fri Apr 06, 2012 3:43 pm

Fake white line when viewing image

Post by BK201 »

Demo image:
BRSlogo.png
What it looks like:
An1.gif

p.s. I'm using 4k monitor with 150% UI sacling
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helmut
Posts: 8705
Joined: Sun Oct 12, 2003 6:47 pm
Location: Frankfurt, Germany

Re: Fake white line when viewing image

Post by helmut »

I've downloaded your image and tried out in XnView MP 0.99.7 on Windows 10. The image is displayed without white line, see below.
2022-02-13_White_line.png
I've tried to reproduce the problem by changing various XnView settings (Tools >> Setting | Category View > View) but without success, i.e. no white line. I suspect that Windows does some anti-aliasing to improve screen quality.

- Could you perhaps change your scaling to 100% and then see whether the problem persists?
- Which version of XnView MP do you use?
- Could you please take a screenshot of your settings in Tools >> Settings | Category "View" | Tab "View" and post it here?
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BK201
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Re: Fake white line when viewing image

Post by BK201 »

helmut wrote: Sun Feb 13, 2022 9:24 am - Could you perhaps change your scaling to 100% and then see whether the problem persists?
- Which version of XnView MP do you use?
- Could you please take a screenshot of your settings in Tools >> Settings | Category "View" | Tab "View" and post it here?
No, just confirmed it's (another) bug related to UI scaling

0.99.7

It's not related to that
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helmut
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Location: Frankfurt, Germany

Re: Fake white line when viewing image

Post by helmut »

BK201 wrote: Sun Feb 13, 2022 4:13 pmNo, just confirmed it's (another) bug related to UI scaling ...
Does this mean that the problem no longer occurs if you set your UI scaling to 100%?
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xnview
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Re: Fake white line when viewing image

Post by xnview »

which font scaling do you use?
Pierre.
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BK201
Posts: 91
Joined: Fri Apr 06, 2012 3:43 pm

Re: Fake white line when viewing image

Post by BK201 »

helmut wrote: Sun Feb 13, 2022 4:49 pm
BK201 wrote: Sun Feb 13, 2022 4:13 pmNo, just confirmed it's (another) bug related to UI scaling ...
Does this mean that the problem no longer occurs if you set your UI scaling to 100%?
yes
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BK201
Posts: 91
Joined: Fri Apr 06, 2012 3:43 pm

Re: Fake white line when viewing image

Post by BK201 »

xnview wrote: Mon Feb 14, 2022 9:36 am which font scaling do you use?
BK201 wrote: Sun Feb 13, 2022 3:30 am p.s. I'm using 4k monitor with 150% UI sacling
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BK201
Posts: 91
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Re: Fake white line when viewing image

Post by BK201 »

This bug is still not fixed in 1.0
rogi
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Joined: Fri Nov 12, 2021 5:52 pm

Re: Fake white line when viewing image

Post by rogi »

I have the same problem when cropping .png files. My system scale is 125%, I use second monitor with 1440p resolution.
XnViewMP v.1.5.0.
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xnview
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Re: Fake white line when viewing image

Post by xnview »

rogi wrote: Sat Jul 22, 2023 10:14 am I have the same problem when cropping .png files. My system scale is 125%, I use second monitor with 1440p resolution.
XnViewMP v.1.5.0.
could you describe your problem?
Pierre.
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user0
XnThusiast
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Joined: Sat May 09, 2015 9:37 am

Re: Fake white line when viewing image

Post by user0 »

xnview wrote: Sat Aug 19, 2023 2:09 pm
rogi wrote: Sat Jul 22, 2023 10:14 am I have the same problem when cropping .png files. My system scale is 125%, I use second monitor with 1440p resolution.
XnViewMP v.1.5.0.
could you describe your problem?
White line at the bottom of cropped PNGs by rogi
xmozg
Posts: 58
Joined: Fri Sep 24, 2021 3:31 pm

Re: Fake white line when viewing image

Post by xmozg »

This is the same as my reported bug "artifacts when viewing with hq algorithms":
viewtopic.php?f=62&t=45677

The same gray bar at the bottom of the image is due to the use of scaling.
I think if the common cause of the gray bar on the bottom is fixed, a lot of the bugs associated with the bar will also disappear.