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fix(mesh): refine the anchor map before using it -- inconsistency 63 -> 51

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Pass 1's anchor map contains exactly the mistakes the neighbourhood is meant to
correct, so a resource sitting beside a mis-anchored neighbour inherits a bad
reference. Re-anchoring against the improving map and repeating converges
quickly: two rounds, and a third changes nothing (the loop exits early when a
round is a fixpoint).

  before                 decoded 5480/6294  inconsistent 125
  neighbourhood anchor   decoded 5480/6294  inconsistent  63
  + refining the map     decoded 5480/6294  inconsistent  51

Coverage still unchanged. The 51 that remain cluster in _l (LOD) and _dead
variants -- e001_l, e010_bdy_01_l, e106_eng_02_l, _rou_f302_base_dead,
e303_base_dead and friends. A plausible reading is that a variant shares its
base's vertex and index counts, making the two mutually confusable so that
locality cannot separate them; recorded as untested rather than asserted.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
This commit is contained in:
Claude (auto-RE)
2026-08-12 00:39:35 +00:00
parent f18d5919f7
commit 27a0701e0d
3 changed files with 33 additions and 4 deletions
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2
crates/sylpheed-formats/tests/mesh_consistency_disc.rs
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@@ -53,7 +53,7 @@ fn span(m: &Xbg7Model) -> Option<[i64; 3]> {
}
#[test]
#[ignore = "known-failing: 63 of 681 shared resources still decode inconsistently (was 125 before the neighbourhood anchor, 2026-08-12)"]
#[ignore = "known-failing: 51 of 681 shared resources still decode inconsistently (125 before the neighbourhood anchor, 63 before refining it — 2026-08-12)"]
fn shared_resources_decode_identically_in_every_container() {
let Some(root) = disc_root() else {
eprintln!("SKIP: extracted disc not found (set SYLPHEED_DISC to enable)");