Bug 422609 - Cursor leaves traces on 4k screens
Summary: Cursor leaves traces on 4k screens
Status: RESOLVED FIXED
Alias: None
Product: krita
Classification: Applications
Component: OpenGL Canvas (show other bugs)
Version: nightly build (please specify the git hash!)
Platform: Microsoft Windows Microsoft Windows
: NOR normal
Target Milestone: ---
Assignee: Emmet O'Neill
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2020-06-08 03:18 UTC by Ralek Kolemios
Modified: 2020-06-08 19:33 UTC (History)
4 users (show)

See Also:
Latest Commit:
Version Fixed In:


Attachments
Affected canvas (393.06 KB, image/png)
2020-06-08 03:18 UTC, Ralek Kolemios
Details

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Description Ralek Kolemios 2020-06-08 03:18:59 UTC
Created attachment 129132 [details]
Affected canvas

I updated to the latest version of Krita Plus, (Hash 428be56)
And the canvas is entirely inoperable on my Cintiq. It works fine on my main screen, but the second it's dragged to my 4k one, it breaks.
Attached is what it looks like. The bottom left quadrant is the actual canvas, but the rest of the canvas is unusable.
Comment 1 Halla Rempt 2020-06-08 06:11:33 UTC
Can you please attach the contents of Help->System Information for Bug Reports?
Comment 2 Alvin Wong 2020-06-08 06:48:36 UTC
This is about the same as what I got when testing out the MSIX test build (which is commit 8130dce). Likely caused by some mishandling of high-dpi (devicePixelRatio != 1) but I didn't dig any deeper.
Comment 3 Dmitry Kazakov 2020-06-08 14:29:56 UTC
I can partially reproduce this bug on Yoga device. I don't have artifacts like on the screenshot, but the canvas in not operable and is painted with huge offset to the bottom-left
Comment 4 Dmitry Kazakov 2020-06-08 14:46:28 UTC
Okay, setting the renderer to Angle makes the bug fully reproducible
Comment 5 Emmet O'Neill 2020-06-08 19:32:59 UTC
FIXED: on master @ 9e9bfce29b68f87e25863ebcdf285a4c1dfe1120 Fixed OpenGL canvas rendering for High-DPI displays.