This new mode will be only used for the actual payload variables and not the number of launched mesh shader workgroups, which will still be treated as an output. Signed-off-by: Timur Kristóf <timur.kristof@gmail.com> Reviewed-by: Jason Ekstrand <jason.ekstrand@collabora.com> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/14930>