Exact one-owner slabs (33,813 samples audited, controls fire), floor/seams/determinism green, routes already
satisfy R > S (S up to 7.9 m). But near-ready 8-21% behind 4041d4b and UE 30 m/s near 40.2 -> 31.5%.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_016dhxM43dnWvUu2B5Ph1iG1
Pair overlap comes from per-segment bounds expanded by radius + 4.335 m route reach; two exact filters cut
floor-profile calls 20-23% but near-ready stayed +3..+11% vs L109 (within ~2% of L125).
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_016dhxM43dnWvUu2B5Ph1iG1
Conservative route slabs with an outside sentinel, tight expanded segment bounds; DensityGrid exact fallbacks
479k -> 0 per run. Near-ready 2-14% faster than L119, still +4.7..+10.2% vs L109; whole view within -0.5..+8%.
Same look (floor offset 7.884 mm, captures checked), seam audit bit-identical, fast tier + walk audits,
Clang/GCC W1/W8/W12 determinism green. BVH and 25 cm tolerance trials rejected. Not for merge yet.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_016dhxM43dnWvUu2B5Ph1iG1
Shape gate is real (no LOD0-2 tile before shape ready, ~180-226 ms) but the shape pool is already ~8/8 busy;
independent 27-tile pages net at most ~62 ms (VS negative). Near-ready today: SW 0.69-0.71 s, VS 0.84-0.99,
TN 1.24-1.37, FI 1.33-1.44 s. No runtime change.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_016dhxM43dnWvUu2B5Ph1iG1
The 18 ms gate is one game-thread tick, not compile cost (0.25 ms). MPSC handoff keeps ownership but still
polls per tick; velocity look-ahead didn't help (near -0.8 pt, p99 11.77 > 11.00). Both kept as a patch.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_016dhxM43dnWvUu2B5Ph1iG1
98% of idle-with-holes windows wait on the expanded critical set; region compile runs 0.26 ms but its
gate stays pending 18 ms p50. Broad early admission: near +15.4 pt but p99 13.4 ms (over the VR 11 ms
frame); near-only: +9.9 pt but far holes +1.5 pt. Trace instrumentation kept as a patch.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_016dhxM43dnWvUu2B5Ph1iG1
After the normal visible-apply count is reached and <50% of the 2 ms budget is spent, apply one horizon
result (off during startup boost; voxel.StreamingFarApplySupplement=0 disables). 30 m/s UE, 5 pairs:
far holes 4.38% -> 2.70%, far finish-to-apply p50 1.105 -> 0.114 s, worst tick 14.74 ms (<15.43),
near coverage +0.3 pt, arrival whole-view -313 ms. Geometry unchanged (24/24 hashes), fast tier green.
Adds trace-only RMC proxy publication timing.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_016dhxM43dnWvUu2B5Ph1iG1
Far holes coexist with idle workers: far tiles wait median 1.12 s / p95 3.21 s from worker completion
to apply while generating in p95 10 ms, so the game-thread result queue and admission are the limit.
Priority split failed; 10 slots helped but broke the worst-tick bar. LOD2 still waits for far parents.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_016dhxM43dnWvUu2B5Ph1iG1
Chord error 2.5 -> 10 cm, shell work skipped outside the 0-0.75 m band. Sweep pairs -39%, prepare -60%,
near-ready 3-8% faster than L115 but still +13..+22% vs L109. Floor offset 7.88 mm; captures match L115
by eye; fast tier, walk audits, Clang/GCC W1/W8/W12 determinism green. Not for merge yet.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_016dhxM43dnWvUu2B5Ph1iG1
Tagged the passage bucket: per-tile prepareSweptTubeBase dominates (0.47-0.92 s summed per view),
smooth-min second. Segment lower-bound pruning (-17% pairs) and deferred fallback floor work stayed
hash-exact but moved near-ready <3%. Still +17..+26% vs L109.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_016dhxM43dnWvUu2B5Ph1iG1
Near +18..+32% is ~95% in passage-feature tiles (12-17% of tiles): sweep pairs 2.3-2.6x, exact
fallbacks +71..+101%, segment visits 3-4x, plus an untagged cache/prepare/smooth-min bucket
(+0.47 s/view). Skips, triangle counts (-0.1..-1.4%), skirts, normals, far shells ruled out.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_016dhxM43dnWvUu2B5Ph1iG1
Fine pairs 48.9M -> 38.8M (-21%) with L115-identical hashes, but no readiness change (still
+15..+30% near-ready vs L109). Pair evaluation is not where the regression lives. Kept as patch.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_016dhxM43dnWvUu2B5Ph1iG1
Floor height from the planner profile h(s) by horizontal projection + arc-length interpolation;
adjacent fine segments share endpoint values. Floor zero-crossing offsets max 7.8 mm (L114: up
to 73 mm); rock-floor close-ups show no ribs. The 2 L114 shell misses were oracle false positives
(points inside an overlapping bore); the oracle now checks every overlapping span; no gate relaxed.
Fast tier PASS; Clang/GCC W1/W8/W12 deterministic. Speed regression grows: near-ready +17..+31% vs
L109 (fine-segment/sample pairs 49.0M vs 19.8M). Not merged.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_016dhxM43dnWvUu2B5Ph1iG1
Floor ribs are present in L109/L112/L113 rock tunnels too: the floor height comes from the
nearest segment, so it jumps (up to 5.9-7.3 cm) where the nearest segment switches. v222 reduces
them; faint ribs remain. Quiet-machine timing (load 0.64): near-ready 9-17% slower than L109
(FI W12 0.95 -> 1.10 s); candidate totals ~5x L109. Fast tier FAIL: 2 SW wall-shell probes of
31,381 read host air. Walk/grade audits pass; Clang/GCC deterministic; UE builds.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_016dhxM43dnWvUu2B5Ph1iG1
Open-air walls: 0.75 m rounded shell, relief fades over the top 0.25 m - the needle spikes are
gone. Every owner plan passes the 15 deg forward-grade check (max ~10.7 deg) and all walk audits.
Floor bands: median 1.25 m interval, ~0.21 m drop on a ~10.4 deg floor = one 0.25 m voxel row
projected along the grade (not control points, not slab thickness) - not yet fixed. Exact
segment-to-tile filter did not reduce candidates; removed. Timings this round are unreliable
(a gitea process used ~43% CPU throughout). Fast tier PASS; Clang/GCC deterministic; UE builds.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_016dhxM43dnWvUu2B5Ph1iG1
Dense centripetal spline in XY, height piecewise-linear on the planner's certified profile,
radius/floor depth blended; open air = floor slab + 1 m side walls, no roof; audits sample the
generated centreline. All walk audits pass (grades <= 15 deg, headroom, shell, mouths, ripple);
Clang/GCC W1/W8/W12 deterministic; fast tier PASS; Linux UE builds. Chevron rings gone.
Open issues: jagged spikes along the half-pipe wall tops, visible step lines on the trough
floor; near-ready +7..+10% vs L109 (candidate list p95 4 -> 22). Not merged.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_016dhxM43dnWvUu2B5Ph1iG1
Route resampled to ~1 m (310 -> 2,790 segments); open air writes a 0.75 m floor slab plus 1.0 m
side walls, no roof. The 3D spline overshoots between planned route points, raising floor grades
above 15 deg; a grade-limited variant left 2 unsupported samples on passage 0-1, and the shell/
ripple audits still model the old chord route. Stopped after two designs. Not merged.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_016dhxM43dnWvUu2B5Ph1iG1
Owner design: flat world-horizontal floor (0.50 m corner blend), 0.75 m solid shell written only
where the host field is air (interiors union first and beat every shell), 5 m cubic mouth ramps.
Removed route support restoration, deferred support, support columns, mouth-support restoration
and their capsule checks (-5,129 / +1,641 lines). Near-ready @W12: FI 1.39 -> 0.86, TN 1.29 ->
0.90, VS 0.85 -> 0.74, SW 0.70 -> 0.76 s (more shell/skirt surface). All walk audits pass;
Clang/GCC W1/W8/W12 deterministic; fast tier PASS; Linux UE builds; 6 UE arrival traces pass.
OPEN ISSUE: open-air shell (e.g. passage 0-1, 1037-1489 m route span) shows a regular stepped
banding pattern - not merged into assembler/world until fixed/approved.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_016dhxM43dnWvUu2B5Ph1iG1
export_world.py exports the owner four-strate world (LOD0-2 around each arrival + one FI
passage view) through the headless mesh exporter and converts to GLB (16-45 MB, 0.6-1.7M
triangles each); GLBs are git-ignored and regenerated by the script. Menu collapses to a
button (collapsed by default on phones), smaller phone controls, loading progress and errors.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_016dhxM43dnWvUu2B5Ph1iG1
Policy 3 movement traces (12 s move + 5 s dwell, 3 runs each). Unreal 30 m/s: near LOD0-2
ready while moving 31.6 -> 44.2% (LOD0 15.4 -> 34.7%), world tick p99/max 23.1/28.3 ->
11.3/13.6 ms, dwell completion 3.55 -> 3.22 s; far holes 2.5 -> 4.3%. Walking unchanged (~99%).
Stale work is small (1.9% of moving LOD0 tiles finish out of range); the remaining limit is
sustained generation throughput (8 task slots, p95 worker 105 ms). Near:far stays 4:1.
World unchanged (pinned hashes pass). Fast tier PASS; Linux UE builds.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_016dhxM43dnWvUu2B5Ph1iG1
Exact (24/24 hashes) but marginal: base compile ~16 ms shorter; whole view -1.6..2.2% at W8,
near-ready mixed (TN W8 +31 ms, VS W12 +11 ms). Kept as patches/startup-overlap-not-merged.patch
per the owner's simplicity rule (only merge measured wins on near readiness).
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_016dhxM43dnWvUu2B5Ph1iG1
A route-only floor profile cannot reproduce current support semantics: support is gated per
sample by native density < 0, player-capsule clearance, later-bore deferral and neighbouring-
passage capsule checks (the overlapping-coil tile exercises all of them). The exact per-tile
boundary-band XY column cache matched all 24 hashes but showed no consistent readiness gain,
so it is kept as a patch only (patches/band-column-cache-not-merged.patch), not merged.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_016dhxM43dnWvUu2B5Ph1iG1
Owner shapes compile per stratum on the Core parallel scheduler and merge in owner-layout order;
far-parent ellipsoids/connectors generate in parallel and merge canonically; 512-unit far bins.
Base compile 239 -> 203 ms, far-parent build 128 -> 33 ms. Near-ready @W12: SW 0.84 -> 0.75,
FI 1.51 -> 1.42, TN 1.38 -> 1.30, VS 0.92 -> 0.85 s. All hashes equal L104 (Clang/GCC W1/W8/W12).
Fast tier PASS; Linux UE builds; 6/6 Unreal arrival traces pass.
R45 (read-only, owner's "are we overcomplicating?"): next simplifications = tunnel floor/mouth support
inside the bounded passage field; boundary bands once per XY column; certified early SW tiles.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_016dhxM43dnWvUu2B5Ph1iG1
Near tiles legitimately need floor/ceiling boundary patches, but every hit query scanned the
tile's whole XY column. Direction-specific 3D cell bins conservatively index triangle bounds; the
existing predicates still decide every hit. Candidate visits per query -88..-99%; identical query
and hit counts. Hit-function cost ~1.7-1.9 -> ~0.35 s per FI/TN run. Near-ready @W12: FI 1.63 ->
1.52, TN 1.51 -> 1.38, VS 1.00 -> 0.92 s. All tile/whole hashes equal L103 (Clang/GCC W1/W8/W12).
The 24-28% "idle" is in the serial base-shape (~0.24 s) and far-parent (~0.13 s) phases; the
LOD0-1 drain is >= 99.4% busy. Fast tier PASS; Linux UE builds; FI Unreal arrival 1.96-1.98 s.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_016dhxM43dnWvUu2B5Ph1iG1
FI/TN LOD0-2 W12 worker CPU 13.9/12.2 s: passages 40/35%, far-shell refinement (HasDownwardHit/
HasUpwardHit ~1.7-1.9 s) in 'other' 27/30%, support 14/13%, dispatch 8%, base field 6%, bands 6%.
Workers 28%/24% idle during LOD0-1. Near-ready W12: SW 0.77, FI 1.51, TN 1.38, VS 0.96 s.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_016dhxM43dnWvUu2B5Ph1iG1
Six null-RHI traces on 55e20f4, no address-space cap. FI: first admission 0.385 s, LOD0-2 settled
1.943 s (1.555 s from admission; L97 2.109 s), UWorld::Tick max 6.7 ms (L97 21 ms). SW: 0.415 /
1.706 s (1.292 s from admission), max 12.0 ms. EndPhysics gap <= 2 ms. Peak RSS ~2.32 GiB.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_016dhxM43dnWvUu2B5Ph1iG1
Off-grid census by caller (MC midpoints, skirts, far shells); all 63.0M sweep misses accounted
(1.9M exact-route fallbacks, 61.1M counted bound skips). Exact MC midpoint queries memoized by
float bits (Unreal enables it too); feature bounds expanded. L100/L101 whole-view hashes equal in
all four strata (v216 unchanged); 0 added/removed crossings; 15 capture pairs pixel-identical.
Near-ready @W12 L100 -> L101: FI 1.77 -> 1.65, TN 1.66 -> 1.54, SW 0.85 -> 0.84, VS 1.03 -> 1.03 s
(L98 2.28/2.23/1.02/1.11). Fast tier PASS; Linux UE host builds. Unreal arrival traces not obtained
(the runner wrongly applied the 6 GiB address-space cap to Unreal).
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_016dhxM43dnWvUu2B5Ph1iG1
L99 treated a missing exact-grid sweep sample as "no route here", so off-grid queries exposed the
FI/TN boundary band inside passage 1-2 (flat ceiling/floor). In-bound misses now evaluate the
exact route; a conservative route-feature bound still skips out-of-extent misses. Composition
order unchanged (graph -> bands -> passage -> stamps -> floor caps).
Comparison now counts added/removed crossings and triangles: 0/0 crossings on all four strates
(FI +56 triangles). 1-2 mid-tunnel: L98->L100 changes 32k px (L99 changed 1.14M).
Near-ready @W12 (L98/L99/L100): FI 2.62/1.78/2.05, TN 2.36/1.55/1.80, SW 1.17/0.95/1.04,
VS 1.16/1.03/1.08 s. All walk audits pass; 24/24 Clang/GCC W1/W8/W12 determinism; fast tier PASS.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_016dhxM43dnWvUu2B5Ph1iG1
Route plan unchanged. Per tile, route segments whose bounded influence (tube + 4 m) touches the
tile write min-combined tube distance (base sweep); relief/floor/mouth shaping only in the shell
(detail sweep); 0.5 m edge blend into the strate field. Near-ready @W12: SW 1.01->0.80,
FI 2.23->1.43, TN 2.18->1.37, VS 1.09->0.98 s; whole view FI 3.38->2.37 s. All passage walk
audits pass (21,425/21,425 canonical, 3/3 interfaces); 24-run Clang/GCC W1/W8/W12 determinism;
0 sign flips. Change: mean 0.02 cm / 0.05 deg; max 25.9 cm (passage walls/roofs ~3.5 m from
route, LOD2) and 49.8 deg (rock walls 13-25 m from routes, LOD2). Captures with diffs in
Linux99/captures. Fast tier PASS (v215 pins).
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_016dhxM43dnWvUu2B5Ph1iG1
Per-world prepared chord/length/radius/Catmull-Rom/floor-profile data (310 segments, ~66 KB,
<0.04 ms); same expression grouping, divisions and square roots, so output is bit-identical
(zero density/tile mismatches, Clang vs GCC equal). No measurable readiness gain - the cost is
the number of samples running passage work, not per-sample arithmetic. Note: the report's
world labels are shifted by one row (the 2,850-tile row is SurfaceWorld). Fast tier PASS;
Linux UE host builds.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_016dhxM43dnWvUu2B5Ph1iG1
The 50-90 ms UWorld::Tick spikes were the TG_EndPhysics barrier waiting for physics-scene
completion while all 8 TaskGraph workers ran BackgroundHigh tile tasks. Near and horizon tile
generation now run at ETaskPriority::BackgroundLow (helper lanes background); queue depth and
the 8 workers are kept. FI: near set 2.11 s (10 runs), max UWorld::Tick 21 ms, max
EndPhysics->PostPhysics gap 16 ms; SW: 1.32 s, 11 ms. A hard 7-task cap removed spikes but
doubled settle time. World unchanged. Fast tier PASS; Linux UE host builds.
R44 notes (exact passage restructuring: only a full-composer z-column SIMD kernel could
plausibly reach 3x; smaller exact pieces ~1.1-1.2x each) attached.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_016dhxM43dnWvUu2B5Ph1iG1
- Per-frame passage-overlap scoring over outstanding tiles (added in L85) measured 121 ms for
407 LOD2 candidates; removed (deterministic desired/travel order kept).
- Visibility reconciliation read-locked the Core world per candidate while the far-world build
held the writer lock (162 ms scan, 123 ms lock wait); the immutable render distance is cached.
Visibility now <= 0.17 ms.
- Ready player-support collision tiles stay in the collision-desired set: fixes the L95 SW outlier
(LOD0 (3,0,-47/-48/-50) re-admitted); 6 SW runs without re-admission.
- AVoxelWorld::Tick during the arrival burst: FI p99 3.7-4.3 ms (max 6.0), SW p99 8.2-8.9 ms
(max 11.2). FI still shows rare 40-60 ms world ticks outside our actor scope (engine tick group).
- Near-set times kept: FI 2.06-2.12 s, SW median 1.30 s after first admission. World unchanged.
Fast tier PASS; Linux UE host builds.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_016dhxM43dnWvUu2B5Ph1iG1
Unreal per-tile timeline: per-tile Core work is not slower than headless (FI 11.2 vs 16.2 ms
per shared key); the gap was tick-paced admission with a small queue (FI ~5.2 of 8 slots busy).
voxel.StreamingReadyQueueDepth default 16 -> 64 (effective 32 with 8 slots, total cap 40);
result backlog cap 256 unchanged. First admission -> LOD0-2 settled: FI 2.72 -> 2.10 s,
SW 2.37 -> 1.31 s (3 of 4 runs; one 6.9 s outlier re-admitting 3 LOD0 keys, cause open).
apply_ms max 4.2 ms (14 ms budget). Frame-interval max 118-145 ms both before and after (open).
World unchanged. Fast tier PASS; Linux UE host builds.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_016dhxM43dnWvUu2B5Ph1iG1
Explicit carve reach R (diagnostic, default unbounded): R=2.5 m -> 1.56 cm max displacement,
106 deg max normal change; R=4 m -> 0.63 cm but 53 deg normals. Fails the bar; readiness gain
small and inconsistent (TN -5%, VS +6-7%). No world change (v214). Fast tier PASS.
R43: Unreal SW bReady 2.16 s = serial sign-edge repair (1.94 s, 10.9M corrections;
parallelSignEdgeRepair exists but off); ~0.45 s of SerializeResolvedWorld = adapter SW route search.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_016dhxM43dnWvUu2B5Ph1iG1
- Startup apply boost (24 meshes / 14 ms) now ends on initial LOD0-2 + collision readiness or
the 30 s timeout, not on the first desired-epoch change: FI LOD0-2 settled 3.49 -> 3.40 s.
- Known-empty LOD0 collision classifications persist across unloads within a modification epoch
and are invalidated on edits; commandlet readiness accepts CollisionNotRequired tiles. The 30 m/s
movement trace now passes (no re-requests of the 4 support tiles).
- Startup trace events: SerializeResolvedWorld ~466 ms synchronous in BeginPlay (unchanged);
SW bReady at 2.74 s vs FI 0.75 s (to investigate). Redundant second parse removed.
- Core output identical. Fast tier PASS; Linux UE builds. R42 notes attached.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_016dhxM43dnWvUu2B5Ph1iG1
Clamping the passage-composition source density at -c (c=2..6 voxels, diagnostic, default off)
changes the surface far beyond the bar: c=6 still 65 sign flips, up to 165 cm displacement, 120 deg
normal change (downstream composition consumes deep values). Source gradient at crossings is
distance-like at the median but has huge tails (FI p90 |grad| 512, max 894 vox/vox), so the
density-dependent passage reach is inflated by non-distance values. No world change.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_016dhxM43dnWvUu2B5Ph1iG1
54,324 sparse 4 m bricks, uncapped carve/tread/clearance/mouth lists, built in 26-28 ms,
~12 MiB. Weighted over 30.7M near-LOD sample hits: active carve p90 13, mouth p90 13; reach
fallback keeps 18.3% of passage time (FI 12%, TN 19%) - all because the density-dependent reach
(-d*Q + 0.24 m) exceeds 10 m for deeply negative source samples. Not wired into production.
R41 notes (Unreal LOD0-2 gap: ~0.7 s pre-request in BeginPlay, LOD2 tail, apply boost reset;
L80's 4 missing tiles = re-requested empty collision-support tiles) attached.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_016dhxM43dnWvUu2B5Ph1iG1
Verified ablations (zero passage work / zero band calls). LOD0-2 @W12: exact FI 2.27 / TN 2.25 s;
passages off FI 0.81 / TN 0.85; bands off FI 2.11 / TN 2.06. Passages cost ~1.4-1.6 s of near
readiness, bands ~0.1-0.2 s. A tile-local 4-voxel trilinear passage-delta cache increased carve
segment visits (FI 34.5M -> 56.2M) and slowed LOD0-2 (FI 2.58 -> 3.77 s); removed. No world change.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_016dhxM43dnWvUu2B5Ph1iG1
L86's switch left ApplyResolvedStratePassageCarves running (near-tile service unchanged at ~21
worker-s), so its "no change" ceiling was wrong. Corrected (bands + carves off): FI LOD0-2
2.34 -> 0.66 s, whole 3.47 -> 1.49 s @W12; TN 2.27 -> 0.74 / 3.28 -> 1.52 s. Near-tile service
15.6-22.5 -> 2.6-3.8 worker-s. Critical chain: shape/base compile -> LOD0-1 -> far-parent build
(107-153 ms, pipeline thread) -> LOD2. Workers 81-85% busy in the direct window.
No production scheduling change; hashes equal L85. Fast tier PASS.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_016dhxM43dnWvUu2B5Ph1iG1
Environment-only diagnostic hook disables passage composition (never a world setting).
Cold LOD0-2 / whole @W12 WITHOUT passages: SW 1.12/2.25, FI 2.18/3.34, TN 2.15/3.15, VS 1.12/2.03 s
- the same as with passages (FI 2.16 s). Passages are ~58% of sampled CPU but not the
readiness bottleneck. A lazy exact passage-result cache was +47% slower (24% hit rate, ~700 MB)
and was removed. No world change.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_016dhxM43dnWvUu2B5Ph1iG1
Tiles with passage-overlap score >= 9 split grid fill over up to 4 helper lanes (disjoint rows,
same per-sample order, join before MC) when workers are idle. FI junction tile fill 173 -> 99 ms;
estimated serial floor ~0.55-0.60 s. Readiness essentially unchanged (FI/TN LOD0-2 ~2.15 s @W12):
the limit is now aggregate work, not single tiles.
Unreal: LOD0-2 ordered by passage overlap before travel/distance (L80 modes kept); far parents
built after LOD0-1, LOD2 gated on them; helper budget via ParallelFor. Unreal null-RHI FI
arrival: LOD0-2 resident at 3.65 s.
All tile hashes identical to L84 (four whole views). Fast tier PASS; Linux UE host builds.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_016dhxM43dnWvUu2B5Ph1iG1
Predicted passage-overlap tiles are scheduled earlier (FI worst tile rank 116 -> 69, dispatch
0.95 -> 0.82 s); LOD0-1 publish from the base shape before far parents, which are built before
LOD2 is queued. Every tile hash identical to L83 (all four whole views). Fast tier PASS.
Cold LOD0-2 W8 / W12: SW 1.02 / 0.99, FI 2.26 / 2.18, TN 2.27 / 2.15, VS 1.13 / 1.09 s.
Heaviest tiles (FI/TN junction band, z=-93) still take 0.5-0.7 s each, mostly full-grid fill;
idealized floor ~0.92 s. Unreal scheduler not yet updated.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_016dhxM43dnWvUu2B5Ph1iG1
Exact through LOD2 (all near tile hashes equal L82). W8 LOD0-2: SW 1.09->1.06, FI 2.47->2.34,
TN 2.39->2.43 (noise), VS 1.20->1.18 s. Fast tier PASS.
Scaling W4/W8/W12/W16 (LOD0-2, FI): 3.59 / 2.48 / 2.33 / 2.34 s - flattens past W8-W12.
Estimated infinite-worker floor ~1.0 s FI/TN = shape compile (0.35-0.41 s, not overlapped:
no shape-free tiles in these views) + slowest single LOD0 tile service (0.51-0.59 s).
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_016dhxM43dnWvUu2B5Ph1iG1
Fr0zkaandClaude Opus 5.5