Bug 499972 - Canvas does not use fractional scale, and is blurry instead of pixel accurate
Summary: Canvas does not use fractional scale, and is blurry instead of pixel accurate
Status: REPORTED
Alias: None
Product: krita
Classification: Applications
Component: OpenGL Canvas (other bugs)
Version First Reported In: 5.2.9
Platform: Other Linux
: NOR normal
Target Milestone: ---
Assignee: Krita Bugs
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2025-02-13 10:14 UTC by Bernd Paysan
Modified: 2025-02-13 10:14 UTC (History)
0 users

See Also:
Latest Commit:
Version Fixed/Implemented In:
Sentry Crash Report:

Attachments
A line pattern to reproduce this bug (10.94 KB, image/png)
2025-02-13 10:14 UTC, Bernd Paysan 		Details
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Description Bernd Paysan 2025-02-13 10:14:51 UTC 
Created attachment 178259 [details]
A line pattern to reproduce this bug

SUMMARY

Canvas does not use fractional scale, and is blurry instead of pixel accurate

STEPS TO REPRODUCE

1. Set a fractional scale resolution for your monitor to 160%
2. Load attached image with one pixel wide white/black lines pattern
3. Load the image and scale to 62,5% (which is then one image pixel equals one screen pixel)

OBSERVED RESULT

Line pattern blurred

EXPECTED RESULT

Crispy lines one black, one white, pixel by pixel accurate.

SOFTWARE/OS VERSIONS

Linux/KDE Plasma: OpenSuse Tumbleweed
KDE Plasma Version:  6.3
KDE Frameworks Version: 6.10.0
Qt Version: 6.8.2

ADDITIONAL INFORMATION

Gimp has the same problem