https://bugs.kde.org/show_bug.cgi?id=408485
Bug ID: 408485
Summary: Colors appear darker when retrieving an external
picture as a File Layer
Product: krita
Version: 4.2.1
Platform: Other
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: General
Assignee: krita-bugs-n...@kde.org
Reporter: to...@offensivelytolerant.com
Target Milestone: ---
Created attachment 120727
--> https://bugs.kde.org/attachment.cgi?id=120727&action=edit
A Zip archive containing the files needed for demonstrating the issue
SUMMARY
Two common ways to get an external picture into a Krita project are importing
it as a layer, or using a File Layer pointing to it.
Since at least version 4.2.1 (not present in 4.1.7 as shown in comparison.png),
it seems that some wrong colorspace is applied to the picture when getting it
in as a File Layer, resulting in overall darker colors. However, importing it
as layer (Top bar menu > Layer > Import/export > Import as layer...) keeps the
colors as they should be ( how_it_should_looks_like.jpg for reference).
All of this happens in a Krita project (krita42Benchmarku.kra) using Linear
scRGB colorspace, float16 precision , dual monitor setup (but changing the
colorspace in Krita settings has no influence on solving the problem), Linux
Parabola, using the official appimage. It doesn't seems to happen in a regular
8-bit sRGB project (using how_it_should_looks_like.jpg as a picture to import)
STEPS TO REPRODUCE
1. Extract example.zip archive : it should contain four files,
krita42benchmarku.kra, external_picture_to_import.exr, comparison.png and
how_it_should_looks_like.jpg
2. Open krita42benchmarku.kra with Krita-4.2.1. It has two layers, an imported
layer and a File Layer
3. Use external_picture_to_import.exr as a target for the File Layer (and
optionnally : reimport this file as layerwith Top bar menu > Layer >
Import/export > Import as layer...)
4. See the flagrant difference between the File Layer and the imported layer
5. Try to do this with Krita-4.1.7 ; layers should look similar
OBSERVED RESULT
The File Layer looks darker than the imported layer in Krita 4.2.1, as shown in
comparison.png (layer thumbnails are used for this comparison ; actual layers
looks the same as their thumbnails)
EXPECTED RESULT
The File Layer should look similar to the imported layer and the same as
how_it_should_looks_like.jpg, as in Krita 4.1.7
SOFTWARE/OS VERSIONS
Windows:
macOS:
Linux/KDE Plasma: Linux Parabola, LXDE, Thinkpad laptop (x230) with external
screens
(available in About System)
KDE Plasma Version:
KDE Frameworks Version:
Qt Version: using the Appimage
ADDITIONAL INFORMATION
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