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Gh0str1d3r
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Joined: 27 May 2008
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PostPosted: Mon Oct 23, 2017 7:05 pm    Post subject: okular renders in poor resolution Reply with quote

Since a recent update, okular renders text and images in very poor quality. Here is a screenshot of some text rendered with okular:

https://ibb.co/hfy7fm

and the same text on the same scale rendered with acrobat reader:

https://ibb.co/iZcYLm

The text in both cases is Figure 4 (I just realized that it looks like part of the web page).

Is there any setting that I missed which changes this behavior?


Last edited by Gh0str1d3r on Mon Oct 23, 2017 10:12 pm; edited 1 time in total
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tryn
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PostPosted: Mon Oct 23, 2017 8:30 pm    Post subject: Reply with quote

You have not loaded the images to that location.
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Gh0str1d3r
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PostPosted: Mon Oct 23, 2017 10:11 pm    Post subject: Re: okular renders in poor resolution Reply with quote

The text in both cases is Figure 4 (I just realized that it looks like part of the web page).
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mike155
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PostPosted: Tue Oct 24, 2017 4:38 pm    Post subject: Reply with quote

Did you upgrade to Freetype 2.8.1? What happens if you go back to Freetype 2.8.0?
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Gh0str1d3r
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PostPosted: Tue Oct 24, 2017 10:06 pm    Post subject: Reply with quote

mike155 wrote:
Did you upgrade to Freetype 2.8.1? What happens if you go back to Freetype 2.8.0?


Still the same with Freetype 2.8.0. It's also worth noting that only Okular has these font rendering problems. All other programs render fonts just fine.
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Gh0str1d3r
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PostPosted: Fri Oct 27, 2017 9:07 pm    Post subject: Reply with quote

I found the reason for the pixelated rendering: I have a high-dpi laptop display and used
Code:
System Settings -> Displays -> Scale Displays -> Scale = 1.5
. The problem persists with any of the possible choices in
Code:
System Settings -> Compositor -> Scale Method
. It's better with Scale = 2 and does not exist with Scale = 1. But given the resolution of my display, I really would like to use Scale = 1.5. There is already a bug report upstream:

https://bugs.kde.org/show_bug.cgi?id=384031

I hope they will fix it soon.
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