https://bugs.kde.org/show_bug.cgi?id=473006
Bug ID: 473006
Summary: [Win 11 with ACM] Brush cursor has a visible box with
sRGB color when hovering over WCG color
Classification: Applications
Product: krita
Version: nightly build (please specify the git hash!)
Platform: Microsoft Windows
OS: Microsoft Windows
Status: REPORTED
Severity: minor
Priority: NOR
Component: Usability
Assignee: krita-bugs-n...@kde.org
Reporter: qamp...@hotmail.com
Target Milestone: ---
Created attachment 160741
--> https://bugs.kde.org/attachment.cgi?id=160741&action=edit
brush cursor in W11 with ACM
Tested with Krita 5.2.0-beta1 (git cb64ff8)
Sort of preliminary testing with Windows 11 new "Auto Color Management" mode
(as discussed in https://phabricator.kde.org/T16449). I tried to use 16-bit
linear Rec. 709 output format on Krita and it works good, set the Krita display
profile to 'scRGB' as well but it seems that display profile is ignored here
(which is indeed an expected / correct behavior, IIRC?).
During the test, I found out that the brush cursor had a box around it that
rendered in sRGB instead, this effect is more prominent when hovering over the
wide gamut colors, like seen in attached video. However, only the brush tool
that is affected, even with the brush outline set to none. Other tools are
behaved normally. I also tested with Krita 5.1.5 and it also have this
behavior.
Additional info: the monitor I'm using is LG 27GL850 (98% DCI-P3, 10 bit
input), in non-HDR -- WCG only mode (HDR purposely disabled in EDID just to
test this ACM feature).
STEPS TO REPRODUCE
1. Enable ACM in Windows 11 (preferably using WCG monitor with well-calibrated
MHC2 profile)
2. Set Krita Preferred Output Format to Rec. 709 Linear (16 bit)
3. Create / open a WCG document
4. Select Freehand Brush Tool and try to hover over the WCG colors
OBSERVED RESULT
There's a box surrounding the brush cursor that have the color rendered in sRGB
instead
EXPECTED RESULT
Should be no box there / the box color should be rendered in WCG
SOFTWARE/OS VERSIONS
Windows: Win 11, 22H2 build 22621.2070
Qt Version: 5.15.7
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