Per docs/zh/plans/render-pipeline-threads.md §3.8:
- oak-node/nodes/graphendpoints.rs: the GraphInput/GraphOutput
virtual node pair — factory-registered but hidden from every create
menu, duplicate refused, real value() semantics (the input forwards
its feed_in row, the output publishes its tex_in as the frame).
The input endpoint also declares a connectable feed_in port
(documented deviation: footage/generator sources have no connectable
inputs, so the walk needs a feeder anchor).
- graph.rs: ensure_endpoints/endpoints/is_endpoint — idempotent,
identified by type id, default input->output edge only while the
output's tex_in is free; remove_node refuses endpoints.
- project.rs + serializer.rs: every project graph carries the pair;
a legacy file without endpoints migrates on load (roundtrip and
legacy-migration tests, re-save is idempotent).
- traverser.rs: eval_graph_bfs — the endpoint-to-endpoint Kahn
sweep. Live set = (input's forward cone U its feeder cone) INTERSECT
(output's backward cone); multi-input nodes dequeue at zero
in-degree over the live subgraph; deterministic ascending-id ready
order (Graph::edges is a BTreeSet, so insertion order is
unrecoverable — documented); time-shifted upstreams pull through
the shared DFS memo (walk_dfs, factored out of evaluate);
un-orderable remainder reports a named cycle; missing endpoints /
unreachable output are errors. Eight BFS tests cover the plan's
acceptance bullets.
- oak-render: bfs_endpoint_sweep_renders_footage_through_position —
real clip through a real Position node via the sweep, shifted
pixels asserted against a reference decode.
- Endpoint names localized in all eight i18n packs; storage/structure
tests updated for the two extra nodes.
Mike-Solar
29204d1f63