preResolveSnapshots abstract method
Rasterizes every snapshot in sources through service and decodes each
raster to a ui.Image cached by content hash, so decodedSnapshotFor can
answer synchronously during the frame loop.
Runs in the pre-resolve pass before the frame loop and is idempotent: a
source already resolved is skipped (its cache entry is reused). Throws a
FluvieRenderException when a raster cannot be decoded, and surfaces the
service's FluvieSnapshotUnavailableError when the backend is missing.
Implementation
Future<void> preResolveSnapshots(Iterable<SnapshotSource> sources, SnapshotService service);