536533f556
the push set index isn't always 0, so the offsets need to be updated
in order to avoid clobbering other sets
Fixes: 6be19765cf ("lavapipe: add support for VK_KHR_push_descriptor")
Reviewed-by: Dave Airlie <airlied@redhat.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/9558>