# Round 10 — passage look defects

## Result

Two defects are fixed in the final `VoxelForgeRound10Final.exe`: the broad landing plate and the repeated high-frequency bands on passage shafts. The changes are local to landing overlays and passage-controlled relief. The chamber, tunnel, far, and tunnel-bend captures are pixel-identical to Round 9.

The required cold, full-payload W8 interleave averaged **0.993 s** for Round 10 and **1.022 s** for `VoxelForgeRound9Final.exe`. The Round 10 samples were **1.014 / 0.972 s**; one sample is 14 ms over the target, while the mean is 7 ms under it. A separate new-only cold repeat measured **1.044 s**, so the local run-to-run margin is not robust yet. All runs generated 2,226 tiles with zero cache hits and a 110.90 MiB payload.

| Order | Executable | Process wall | Shape stage | Detail band | Far-parent build | Full clipmap | Cache hits |
| --- | --- | ---: | ---: | ---: | ---: | ---: | ---: |
| old A | `VoxelForgeRound9Final.exe` | 1.071 s | 402.974 ms | 210.013 ms | 46.082 ms | 0.473 s | 0 / 2,226 |
| new A | `VoxelForgeRound10Final.exe` | 1.014 s | 399.349 ms | 206.952 ms | 43.985 ms | 0.462 s | 0 / 2,226 |
| old B | `VoxelForgeRound9Final.exe` | 0.973 s | 402.974 ms | 211.865 ms | 44.336 ms | 0.463 s | 0 / 2,226 |
| new B | `VoxelForgeRound10Final.exe` | 0.972 s | 402.045 ms | 210.640 ms | 43.764 ms | 0.464 s | 0 / 2,226 |
| new C (separate repeat) | `VoxelForgeRound10Final.exe` | 1.044 s | 399.033 ms | 206.829 ms | 44.094 ms | 0.465 s | 0 / 2,226 |

Primary interleaved means: process **1.022 → 0.993 s**, shape stage **403.0 → 400.7 ms**, detail band **210.9 → 208.8 ms**, far-parent build **45.2 → 43.9 ms**, full clipmap **468 → 463 ms**. Startup/setup/finalization, derived by subtracting shape and full-clipmap walls from process wall, is approximately **151 → 129 ms** on the paired runs; the separate new C remainder is **180 ms**, so startup variation dominates the small margin. It is not a separately timed stage. Head-to-head stdout logs: [old A](../round10_ab_oldA_w8.stdout.log), [new A](../round10_ab_newA_w8.stdout.log), [old B](../round10_ab_oldB_w8.stdout.log), [new B](../round10_ab_newB_w8.stdout.log). Separate repeat: [stdout](../round10_final_repeat_c_w8.stdout.log), [runner](../round10_final_repeat_c_w8.runner.log). The final `/MP8` build is [here](build_round10_final_full_suppression.log).

## Causes and fixes

### Passage shaft bands

The bands came from relief displacement on passage capsule surfaces, not from the passage radius profile or segment joins. Radius/slope joins are still zero. The earlier radius and filter probes made no visible change; owner roughness alone and surface value noise alone each retained the bands. Tagging the passage source and suppressing its relief removes them while leaving detail on other cave walls unchanged.

I rejected partial suppression: a 50%-relief probe had shaft high-pass RMS **0.822**, and a 20%-relief probe measured **0.386** and still showed residual rings. The final fully passage-controlled wall measures **0.276**. The fixed-camera [ring check](check_passage_rings.py) uses a 0.350 limit: it fails Round 9 at **1.331** and passes Round 10 at **0.276** ([before](ring_check_before_machine.stdout.log), [after](ring_check_after_machine.stdout.log)). The [final close-up](after_fixed_passage_floor_closeup.png) shows the result.

### Landing and floor plate

`AddLanding` added a shallow positive-rock ellipsoid directly under the floor. It formed the broad brown shelf where the shaft meets the passage floor. The landing carve and native floor remain; the solid ellipsoid was removed. In the fixed passage camera, the warm plate mask drops from **71.2661%** to **0.0000%** of its ROI. The [plate check](check_landing_plate.py) fails the Round 9 capture and passes Round 10 ([before](landing_check_before_machine.stdout.log), [after](landing_check_after_machine.stdout.log)). The chamber image is unchanged.

### Boundary components / slivers

The final shard audit reports two small components at tile `(-3,-14,-3)`: 56 triangles at 3.079 vox thickness and 20 triangles at 1.347 vox. Neither is a thin sheet. An instrumented cross-tile check found **10/10** and **4/4** exact boundary vertices on the adjacent tile, respectively. They are connected surface pieces split by the per-tile component audit, rather than isolated shards. The final audit still reports zero isolated in-view components and zero thin sheets; its two boundary candidates remain connected across the seam. I made no geometry deletion here because it would cut the continuing surface. If the viewer shows a separate visible seam artifact beyond these audit hits, this check does not claim to resolve it.

Evidence: [final shard audit](../round10_final_shard_audit_w8.stdout.log), [cross-tile probe](../round10_cross_tile_final_probe_shard.stdout.log). The latter used a temporary audit-only instrumentation build; `StandaloneViewer.cpp` was restored afterward.

## Determinism, audits, and payload

- W1 and W8 match all **44** density, mesh, payload, and topology hash fields: [comparison](hash_compare_machine.stdout.log), [W1](../round10_final_hash_w1.stdout.log), [W8](../round10_final_hash_w8.stdout.log).
- Passage walkability is **5,642/5,642**. Shape/look checks pass: GridStair relative join step **0.090 / 0.400**, zero thin sheets, detail audit pass, and flat-patch share **6.5%**.
- Far survival passes **7,200/7,200** boundary surfaces and all **10,976** connectors across **178,351** sampled sections. Missing surfaces, holes, and unsampled connectors are zero: [audit](../round10_final_far_survival_w8.stdout.log).
- The damaged-shell control still fails as required: **512** triangles removed, **16** missing surfaces and **16** holes, exit code **14**: [control](../round10_final_bad_shell_control_w8.stdout.log).
- The direct benchmark and both hash runs generated all **2,226/2,226** tiles, used the complete **110.90 MiB** payload, and recorded zero mesh-cache hits.

## Captures

The six Round 9 before captures and six Round 10 after captures use the established fixed cameras. Pixel comparison: [full results](capture_pixel_diffs_machine.stdout.log).

| View | Camera `(x,y,z,yaw,pitch)` | Round 9 before | Round 10 after | Changed pixels |
| --- | --- | --- | --- | ---: |
| Chamber | `(-11.75,-123.25,-19.85,0,0)` | [before](before_fixed_chamber.png) | [after](after_fixed_chamber.png) | 0 |
| Tunnel | `(-11.75,-123.25,-19.85,90,0)` | [before](before_fixed_tunnel.png) | [after](after_fixed_tunnel.png) | 0 |
| Passage | `(-39.19,6.27,-28.51,63,0)` | [before](before_fixed_passage.png) | [after](after_fixed_passage.png) | 932,273 / 1,024,000 |
| Far | `(-11.61244,-118.2212,-19.8452,0,0)` | [before](before_fixed_far.png) | [after](after_fixed_far.png) | 0 |
| Passage-floor close-up | `(-39.19,6.27,-25.51,63,-25)` | [before](before_fixed_passage_floor_closeup.png) | [after](after_fixed_passage_floor_closeup.png) | 972,890 / 1,024,000 |
| Tunnel bend | `(-198.97,-99.57,-45.58,33.59,23.17)` | [before](before_fixed_tunnel_bend.png) | [after](after_fixed_tunnel_bend.png) | 0 |

The remote captures use `(500,0,0,yaw,0)` at yaw 0/90/180/270. The first comparison is Round 8 vs Round 9; the second is Round 9 vs Round 10.

| Yaw | Round 8 | Round 9 | Changed R8→R9 | Round 10 | Changed R9→R10 |
| ---: | --- | --- | ---: | --- | ---: |
| 0 | [image](r8_remote_yaw0.png) | [image](r9_remote_yaw0.png) | 0 / 1,024,000 | [image](round10_remote_yaw0.png) | 136 / 1,024,000 |
| 90 | [image](r8_remote_yaw90.png) | [image](r9_remote_yaw90.png) | 111 / 1,024,000 | [image](round10_remote_yaw90.png) | 2 / 1,024,000 |
| 180 | [image](r8_remote_yaw180.png) | [image](r9_remote_yaw180.png) | 32 / 1,024,000 | [image](round10_remote_yaw180.png) | 0 / 1,024,000 |
| 270 | [image](r8_remote_yaw270.png) | [image](r9_remote_yaw270.png) | 386 / 1,024,000 | [image](round10_remote_yaw270.png) | 386 / 1,024,000 |

Per-channel means/maxima are in [Round 8 vs Round 9 results](remote_compare.log) and [Round 9 vs Round 10 results](capture_pixel_diffs_machine.stdout.log).

## Failed attempts and machine rules

- One capture-wrapper invocation used a nonexistent `...VoxelForge\speed_round` working directory and failed before launching a child (Windows error 267). It was rerun from `Standalone\Research\OwnerShapeWorld\speed_round`; no workload process started on the failed attempt.
- The first six image/hash helper launches through `RunMachinePython.ps1` passed the script path to `Start-Process` without quoting its `E:\Projet Unreal` path; Python exited 2 with “can't open file `E:\Projet`.” I quoted the path and reran all six hash, pixel, and baseline/final gate checks successfully (the two baseline gates exit 1 by design). Records: [failed launches](python_wrapper_initial_failure.log), [constrained reruns](machine_helper_runs.log).
- The first landing-image check expected 1024×768, while captures are 1280×800. That check failed on both images; the ROI script was corrected and rerun. The recorded final before/after logs above use 1280×800.
- The 20%-relief probe was rejected for visible residual bands, despite passing the earlier looser 0.55 exploratory threshold. The final threshold is 0.35; the final image passes.
- The bad-shell exit 14 and the two baseline image-gate exit 1 results are expected controls. All builds succeeded with `/MP8`; final benchmark, hash, audit, capture, and image-check processes ran BelowNormal on affinity `0xFF00`. No process returned `0xC0000142`, and no viewer owned by anyone else was closed.

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