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color-management: clarify white point adaptation with parametric descriptions

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The adaptation state of the viewer is required for interpreting colors, and
specifically for adapting them to a different white point. This commit defines
it to match existing implementations and display class ICC profiles:
The viewer is assumed to be fully adapted to the primary color volume's white
point.

The mastering display white point is not used for this, as it is both somewhat
unlikely to be relevant for the adaptation state of the content creator, and
also relatively likely to be incorrect in existing images, videos and games.

Signed-off-by: Xaver Hugl <xaver.hugl@kde.org>
This commit is contained in:
Xaver Hugl 2025-09-01 14:56:13 +02:00
parent f53eb14774
commit a652a696db
1 changed files with 4 additions and 0 deletions
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staging/color-management/color-management-v1.xml
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@ -959,6 +959,10 @@
Once all properties have been set, the create request must be used to
create the image description object, destroying the creator in the
process.
A viewer, who is viewing the display defined by the resulting image
description (the viewing environment included), is assumed to be fully
adapted to the primary color volume's white point.
</description>
<enum name="error">