map_bake --recompress re-encodes EVERY tile (both pass-through sites) at
the target quality — compression parallelizes across the whole fleet and
the final dataset is uniformly q11. The slicer ships q2 intermediates
(fast, disk-lean). Bake mode also skips runtime-only work per tile:
building/tree vertex extrusion and POI point parsing never reach the
sink and no longer run on workers.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
The zoom-out pyramid was never baked: z11-13 city tiles ran the full
painter cascade at runtime (z12 AMS 340ms cascade, 661ms build). map_bake
gains --zooms (native bucket below z14) and the renderer accepts baked
buckets 10-16; NL smoke bake: 861 tiles/55MB/31s, z13 166->19ms,
z11 252->28ms. Remaining z12 cost was two quadratic endpoint passes over
4017 join ways: bbox+reach prefilters and an endpoint hash grid cut
grade-through 103->33ms and flush-ends 98->3ms, bit-identical (every gate
is half-width-bounded; buffer sizes byte-equal across the sweep). Also
sp-* sub-laps in stroke-prep.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Overnight run 2026-08-01: 9,380,390 tiles z2-14 in 3.2h, faces bake 1h
(+8GB, worker-side brotli q10), transmux to 99 shards all <510MB.
App repointed to europe-base-br-faces.mbtiles. nl-bridge-dz verified
byte-identical against the new base (deterministic feature indices).
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
- The boolean union cascade (59-77% of heavy tile builds) is now baked
per (tile, bucket 14/15/16) as additive field 101: cascade output made
deterministic (1/64 grid snap, canonical ring order, sorted tiers) and
bit-reproducible; renderer consumes guarded by structure signature +
coordinate checksum with runtime fallback; MAKEPAD_NO_BAKED_FACES=1.
Roundtrip bit-identical on all keys x buckets x dz configs. New
tools/map_bake producer (worker-pool incl. worker-side brotli).
- z14 streets merging never ran (early-out at DETAIL_ZOOM): fixed —
1957->1285 ways (-34%), payload -20MB, cascade input shrunk at source.
- Slow-tile log now prints per-stage ms + a ready-to-paste headless repro
command; harness honors archive/detail/dz/overlay/rz/3D envs.
- Worst AMS tile: 2-3s cold -> 175ms rz16 (61ms native); NL bake data
882MB at 60ms threshold; Europe needs threshold 150ms + 2 buckets to
fit shard budget (+2-4GB est).
- App -> nl-base-br3-faces archive; bridge-dz rebake required (joins
fail closed against br3 feature indices).
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
