uapmd-binding/dev.atsushieno.uapmd/JsSequencerEngine/trackFreezeRenderProgress

trackFreezeRenderProgress

open override fun trackFreezeRenderProgress(trackIndex: Int): OfflineRenderProgress?

Progress of the track's freeze render, or null when it is not rendering. FrozenTrackManager::renderProgressForTrack returns an optional for the same reason: only one track renders at a time, and only while Rendering.