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[solved] Ver 3.24.0 Drawing area is low resolution (pixelated) on screen

Posted: Wed Dec 25, 2019 11:34 am
by USER2019X
[solved]Ver 3.24.0 Drawing area is low resolution (pixelated) on screen

System: Windows 10 64bit
QCAD ver: 3.24.0 professional

Problem:
After upgrading to ver 3.24.0 the drawing area appears in “low resolution” – this makes curves and text appear jagged or “pixelated” and unclear, particularly when zooming out of small details. This low resolution appearance also occurs in other parts of QCAD – example in the screen view of the “help” search results.

Corrective actions by user (unsuccessful):
Removed QCAD, rebooted, reinstalled ver 3.24.0. - Problem not fixed.
Removed QCAD and reinstalled earlier version 3.22.1.0. - Problem resolved.


Attachments:
Test Files:
Test.dxf
Test.dwg
Screen Views:
QCAD 3.24.0.jpg Showing low resolution of test drawing
QCAD 3.22.1.0.jpg View of same test file after re-installing older QCAD version

Many thanks for an excellent product – I hope you are able to address this unfortunate bug in the latest version.

Regards

Re: Ver 3.24.0 Drawing area is low resolution (pixelated) on screen

Posted: Wed Dec 25, 2019 1:59 pm
by CVH
Clearly something wrong.
3.23 is ok.

Cheers,
CVH

Re: Ver 3.24.0 Drawing area is low resolution (pixelated) on screen

Posted: Wed Dec 25, 2019 6:20 pm
by J-J
your test drawing looks fine on my computer :?:

Re: Ver 3.24.0 Drawing area is low resolution (pixelated) on screen

Posted: Wed Dec 25, 2019 7:03 pm
by CVH
JJ, if you would specify your version it could help Andrew a lot I think.
:wink:

Cheers,
CVH

Re: Ver 3.24.0 Drawing area is low resolution (pixelated) on screen

Posted: Wed Dec 25, 2019 7:11 pm
by USER2019X
The original attachments do not give a vivid impression of how unfocused the drawing appears.
Attached her are two close-ups of the test file in version 3.22.1.0 (good) and then in 3.24.0 show better the blurred effect.

Additional information - using file>print, the output from 3.24.0 is good. Only the screen views are degraded

Regards

Re: Ver 3.24.0 Drawing area is low resolution (pixelated) on screen

Posted: Wed Dec 25, 2019 7:40 pm
by J-J
CVH wrote:
Wed Dec 25, 2019 7:03 pm
JJ, if you would specify your version it could help Andrew a lot I think.
:wink:
Sorry, it was so obvious it was 3.24.0, win7x64

Re: Ver 3.24.0 Drawing area is low resolution (pixelated) on screen

Posted: Wed Dec 25, 2019 9:52 pm
by andrew
USER2019X: Are you using a high-res / retina display?

If yes, you can enable a high-res graphics display (at the cost of performance) under
Edit > Application Preferences > Graphics View > Appearance > Use full resolution for Retina Display
To further improve the smoothness of the display, you can enable anti-aliasing on the same preferences page as well.

If no, this might be a Qt bug with retina / high-res display detection.

Re: Ver 3.24.0 Drawing area is low resolution (pixelated) on screen

Posted: Wed Dec 25, 2019 11:59 pm
by USER2019X
andrew wrote:
Wed Dec 25, 2019 9:52 pm
USER2019X: Are you using a high-res / retina display?

If yes, you can enable a high-res graphics display (at the cost of performance) under
Edit > Application Preferences > Graphics View > Appearance > Use full resolution for Retina Display
To further improve the smoothness of the display, you can enable anti-aliasing on the same preferences page as well.

If no, this might be a Qt bug with retina / high-res display detection.
Problem Solved!

Have applied your recommendation for
Edit > Application Preferences > Graphics View > Appearance > Use full resolution for Retina Display

Please accept my grateful thanks for such a super-fast helpful reply.

Further information:
There is no obvious reduction of performance using this setting.
Monitor Name: BenQ GC2870 on Intel UHD Graphics 630
Current Resolution: 1920x1080

The reference manual still has text in low resolution (see attachment) but, for me, this does not present any difficulty - so the matter is resolved.

Thanks again & best regards