Instead of using frame callbacks - which may stop firing if our surface is occluded - use the new commit-timing-v1 protocol in combination with the presentation feedback protocol. If the required protocols are unavailable, or the environment variable MESA_VK_WSI_DEBUG contains "nowlts", we fall back to frame callback based pacing behaviour. Signed-off-by: Derek Foreman <derek.foreman@collabora.com> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/26150>