https://bugs.kde.org/show_bug.cgi?id=473063
Bug ID: 473063
Summary: Channels in CMYK have inverted maps
Classification: Applications
Product: krita
Version: 5.1.5
Platform: Microsoft Windows
OS: Microsoft Windows
Status: REPORTED
Severity: minor
Priority: NOR
Component: Dockers
Assignee: krita-bugs-n...@kde.org
Reporter: keyth2363...@gmail.com
Target Milestone: ---
Created attachment 160774
--> https://bugs.kde.org/attachment.cgi?id=160774&action=edit
inverted representation compared to the pixel data
When you see C=0 M=0 Y=0 K=0 it will be represented as white even though it has
no selection of no channel.
this inverts selection expectation because when C=1 on the cyan channel it will
become black with selection.
by consequence the map of Key will look like a normal grayscale version of the
map even though it is selecting black not white.
STEPS TO REPRODUCE
1. open a image in CMYK color model
2. verify the amount of any pixel compared to the specific solor selector and
the amounts are inverted
OBSERVED RESULT
Alot of cyan will be rendered as black instead of white
EXPECTED RESULT
The visual representation of all maps following the same rule.
white -> selected = 1 or 255
black -> selected = 0
SOFTWARE/OS VERSIONS
Windows: 10
Qt Version: 5.12
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