https://bugs.kde.org/show_bug.cgi?id=406699

            Bug ID: 406699
           Summary: No suitable cursor on HDR dark pictures
           Product: krita
           Version: nightly build (please specify the git hash!)
          Platform: MS Windows
                OS: MS Windows
            Status: REPORTED
          Severity: wishlist
          Priority: NOR
         Component: Usability
          Assignee: krita-bugs-n...@kde.org
          Reporter: tamtamy.tym...@gmail.com
  Target Milestone: ---

Created attachment 119525
  --> https://bugs.kde.org/attachment.cgi?id=119525&action=edit
Dark HDR test image

SUMMARY
You have a lot of options when it comes to cursor in Krita. However, all of the
options:
- either rely on XOR (which is not available on ANGLE: it shows a very, very
bright green cursor - and ANGLE is the go-to canvas acceleration option on HDR)
- are white or contains white (which is again super bright on HDR display; even
one white pixel can be too bright on 1000 nits monitor agains a nearly black
area)
- are a single back pixel... which gets lost in dark areas, especially on
HighDPI monitors.



STEPS TO REPRODUCE
1. Create a new HDR image, I used elle-g10, 16bit float.
2. Paint on it with dark colors.
3. Try every pssible cursor - all appear super bright or get lost.

OBSERVED RESULT
Very bright cursor or the cursor easily get lost.


EXPECTED RESULT
Cursor is visible all the time, but isn't that bright.


NOTES
It could be just a grey outline or dark grey-light grey cursor, something like
that.


SOFTWARE/OS VERSIONS
Version: 4.2.0-pre-alpha (git fb08951)
Windows: 10
Qt Version: 5.12.2

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