https://bugs.kde.org/show_bug.cgi?id=522936

[email protected] changed:

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--- Comment #2 from [email protected] ---
Created attachment 196106
  --> https://bugs.kde.org/attachment.cgi?id=196106&action=edit
One correct and two wrong ways of displaying this image

It looks like the the color profile transformation is being applied twice.

The image I'm looking at isn't using XYB, but it's got an unusual ICC profile
that changes RGB -> GBR.  This is a fairly recent regression, because it used
to display this specific image correctly.

The way the image is displayed in Gwenview is neither the result of naively
interpreting it as sRGB, nor the result of converting from its embedded ICC
profile to the display profile.  It's what happens when you incorrectly tag the
sRGB image with the funny GBR profile and then convert *that* to sRGB.

Another screenshot for fun: from left to right:
1. Correctly converted to sRGB (by Gimp)
2. Naively interpreted as sRGB
3. What Gwenview does

Gwenview: 26.08.0
KDE Frameworks: 6.29.0
Qt: Using 6.11.2 and built against 6.11.2
openSUSE Tumbleweed (Wayland)
Build ABI: x86_64-little_endian-lp64
Kernel: linux 7.2.4-1-default

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