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

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USER2019X
Newbie Member
Posts: 3
Joined: Wed Dec 25, 2019 11:08 am

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

Post by USER2019X » Wed Dec 25, 2019 11:34 am

[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
Attachments
test.dxf
dfx test drawing used for screenshot
(99.52 KiB) Downloaded 57 times
test.dwg
dwg test drawing used for screenshot
(17.85 KiB) Downloaded 57 times
qcad 3.24.0.JPG
screenshot: test file Low resolution in ver 3.24.0
qcad 3.24.0.JPG (156.8 KiB) Viewed 1229 times
qcad 3.22.1.0.JPG
screenshot:test file good resolution in ver 3.22.1.0
qcad 3.22.1.0.JPG (172.71 KiB) Viewed 1229 times
Last edited by USER2019X on Thu Dec 26, 2019 1:33 pm, edited 2 times in total.

CVH
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Posts: 697
Joined: Wed Sep 27, 2017 4:17 pm
Location: Belgium; Antwerp

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

Post by CVH » Wed Dec 25, 2019 1:59 pm

Clearly something wrong.
3.23 is ok.

Cheers,
CVH
QCADpro 3.24.3.0 / win7pro 32 bit / 4GB / 1e generation i7 2.6Ghz / HDD GeForce GT 520

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J-J
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Posts: 434
Joined: Tue Mar 24, 2009 9:48 pm

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

Post by J-J » Wed Dec 25, 2019 6:20 pm

your test drawing looks fine on my computer :?:
JJ Win7 pro-64

CVH
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Posts: 697
Joined: Wed Sep 27, 2017 4:17 pm
Location: Belgium; Antwerp

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

Post by CVH » Wed Dec 25, 2019 7:03 pm

JJ, if you would specify your version it could help Andrew a lot I think.
:wink:

Cheers,
CVH
QCADpro 3.24.3.0 / win7pro 32 bit / 4GB / 1e generation i7 2.6Ghz / HDD GeForce GT 520

USER2019X
Newbie Member
Posts: 3
Joined: Wed Dec 25, 2019 11:08 am

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

Post by USER2019X » Wed Dec 25, 2019 7:11 pm

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
Attachments
3.24.0.JPG
Close-up of test file in 3.24.0 showing degraded lines/text
3.24.0.JPG (35.74 KiB) Viewed 1207 times
3.22.1.0.JPG
Close up of test file in 3.22.1.0 showing clear lines.
3.22.1.0.JPG (44.59 KiB) Viewed 1207 times

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

Post by J-J » Wed Dec 25, 2019 7:40 pm

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
JJ Win7 pro-64

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andrew
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Joined: Fri Mar 30, 2007 6:07 am

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

Post by andrew » 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.

USER2019X
Newbie Member
Posts: 3
Joined: Wed Dec 25, 2019 11:08 am

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

Post by USER2019X » Wed Dec 25, 2019 11:59 pm

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
Attachments
ref manual.JPG
Low resolution text in reference manual.
ref manual.JPG (101.22 KiB) Viewed 1179 times

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