https://bugs.kde.org/show_bug.cgi?id=377267

            Bug ID: 377267
           Summary: Converting from 16bit integer g10 or 8 bit integer g10
                    profile to 8 bit integer (trc) results in darker
                    images in krita
           Product: krita
           Version: git master
          Platform: Other
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: NOR
         Component: Color models
          Assignee: krita-bugs-n...@kde.org
          Reporter: raghavendr.ra...@gmail.com
  Target Milestone: ---

Due to a recent commit in master branch
(https://cgit.kde.org/krita.git/commit/?id=4763f5e524c0cc08f38dae4b1a89d28a2649a985)
. Converting from 16 bit integer (g10) profile or 8 bit integer g10 profile to
8 bit integer trc profile is broken. The resulting image is darker and wrong. 

To reproduce

1) Switch to master branch and compile krita
2) Open new document with 16 bit g10 or 8 bit integer g10 integer color profile
3) add some color dabs or gradients
4) Now change the color profile by going to convert image color space in image
menu
5) choose 8 bit ( it automatically selects sRGB trc profile) dont check any
option and press ok

Expected result - 

image after color conversion shouldn't have huge difference in value or
brightness

Actual Result - 

Image after conversion is darker than what it used to produce earlier.


Let me know if you need any more details.

P.S. by g10 color profile i mean the color profiles ending with g10 in name

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