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color: make invalid id illegal

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This started from
https://gitlab.freedesktop.org/swick/wayland-protocols/-/merge_requests/90
where it was desireable for a compositor to send invalid image
description ids because it does not track and de-duplicate image
description records.

Concensus decided the opposite: the id number must be valid. The ability
to skip get_information request was seen valuable, and the effort to
implement id allocation was deemed not too high. It is also to the
majority taste to deliver image descriptions with valid id.

Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.com>
This commit is contained in:
Pekka Paalanen 2024-11-04 16:56:18 +02:00
parent b14bb43711
commit 425ff5e7d6
1 changed files with 2 additions and 1 deletions
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3
staging/color-management/color-management-v1.xml
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@ -1367,7 +1367,8 @@
Image description id number is not a protocol object id. Zero is
reserved as an invalid id number. It shall not be possible for a client
to refer to an image description by its id number in protocol. The id
numbers might not be portable between Wayland connections.
numbers might not be portable between Wayland connections. A compositor
shall not send an invalid id number.
This identity allows clients to de-duplicate image description records
and avoid get_information request if they already have the image