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Syplheed-Reborn/docs
Claude (auto-RE) 5b8b5e0ab1 re: measure the XBG7 declined set, and close off the descriptor shortcut
"A few multi-stream / quantized bodies remain" declined understates it. Across
all 166 resource3d containers: 6294 XBG7 resources, 5480 decoded (87.1%), 814
declined, in 31 of 166 containers. By name the declined set is 492 e* (enemy
craft), 142 f*, 73 n*, 23 eff*, plus *_dead destroyed variants -- not hero
bodies.

Also recorded as a dead end, so nobody repeats it: the descriptor's third word
looks like (streams << 16) | format -- decoded g001..g003 carry 0x00010001 while
declined t170/t180 carry 0x00020004 -- but histogramming it disc-wide puts
decoded AND declined at every value (0x00010001 alone: 4479 decoded, 328
declined). Its low half tracks sub-mesh count. Decodability is not declared in
the descriptor; it is whether the unit-normal anchor scan can locate vb0, which
the code already tests. 229 declined resources carry the most common word[2] with
under 1 KB of data, i.e. small meshes with too little signal to anchor rather
than exotic formats.

No decode gained this iteration; the gap is now quantified and one attractive
wrong turn is closed.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-11 23:03:58 +00:00
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