ConstReadonlyabandoned: 6Readonlyattached: 2Readonlyattaching: 1Readonlydetached: 4Readonlydetaching: 3ReadonlytargetLost: 5A frame or driver task failed and the session can no longer render. The map
reports the failure as MLN_RUNTIME_EVENT_MAP_RENDER_ERROR. A failed
attach reports it through its completion instead.
Render-session lifecycle visible in snapshots.
See
mln_render_session_statein the C API reference.