research(standalone): shape world -- 64 m full detail in 0.96 s, whole view in 2.27 s, cold; look not there
Owner's rooms, tunnels, passages, landings and strate shells compiled as shapes, solved along lattice lines with packed signs; rock detail only in a band sized by its supremum; far levels from the same shapes; multithreaded meshing. 8 workers, BelowNormal, affinity 0xFF00, zero cache hits: full detail (960 tiles): 669 ms shapes + 290 ms mesh = 0.959 s (was 20.3 s) full clipmap (6,498 tiles): 870 ms + 1.398 s = 2.268 s (was 170.6 s) Checks: 5,642 passage centreline samples open; smoothed and per-voxel-noise variants both fail the detail audit; same hash across runs and 1 vs 6 workers. V toggles owner field / shape world. Look: 6-12% of lattice signs changed; captures show flat planes without detail (passage floor, a wall band), telescoping tunnel segments, blocky stair patches. Not accepted as the owner's world yet. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01MmSoF64BbRFmk9C3p1VsBJ
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# Owner shape world: standalone results
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The standalone path now builds the owner world from its room, tunnel, passage,
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landing, floor, ceiling, and seal shapes. It does not read or write the mesh
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cache. The active voxel lattice remains 25 cm; rock detail is evaluated only in
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the surface band. `V` switches between the current owner density and the shape
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world in the viewer.
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## Method
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- `Source/StandaloneShapeWorld.h` compiles the known shapes into column
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intervals, combines their signs in packed words, and locates surface cells
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with bit operations. Round and winding tunnels use line-solved/approximated
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shape primitives; protected passage air is applied after solid overlays.
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- The coherent rock detail has a proven maximum amplitude of 3.20 voxels and a
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4-voxel evaluation band. Detail outside that band cannot change the base
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sign. The far field is compiled from parent shapes and meshed coarsely.
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- Existing marching-cubes meshing runs on worker threads. Benchmark runs use
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`--force-generate`; shape-world mode also bypasses cache loading. The reports
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below show zero cache hits.
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- Builds are serial (no `/MP` flag). The build host sets BelowNormal priority
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and affinity `0xFF00`; launched viewers use BelowNormal and `0xFF00` too.
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## Cold generation timings
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Each timing is shape compilation plus uncached mesh generation. The full-detail
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area is the 64 m cube with 960 LOD0–1 tiles. The full clipmap contains 6,498
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tiles through LOD6. Hashing is off for these timing runs.
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| Cold job | Shape stage | Mesh generation wall | Total | Result |
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| --- | ---: | ---: | ---: | --- |
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| Full detail, 8 workers | 668.566 ms | 290 ms | **0.959 s** | 960/960 tiles; cache hits 0 |
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| Full clipmap, 8 workers | 870.418 ms, including far parents | 1.398 s | **2.268 s** | 6,498/6,498 tiles; cache hits 0 |
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Full-detail stage breakdown: local shapes 53.892 ms, intervals/signs 196.326
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ms, surface band 417.952 ms. Full-clipmap breakdown: local shapes 53.281 ms,
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intervals/signs 195.162 ms, surface band 424.921 ms, far parents 196.578 ms.
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The measured full-detail total is close to the 1 s limit; the full clipmap has
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more margin under 5 s.
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Logs: `final/full_detail_cold_w8_final.stdout.log` and
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`final/full_clipmap_cold_w8_final.stdout.log`.
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## Similarity and captures
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The viewer captures use explicit positions and yaws. Owner and shape images are
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paired at the same camera settings. The far owner image is the existing cold
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baseline capture at the default start view; its matching shape capture was
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made at the same position and yaw.
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| View | Owner capture | Shape capture |
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| --- | --- | --- |
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| Chamber, yaw 0° | `final/chamber_fixed_owner.png` | `final/chamber_fixed_shape.png` |
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| Tunnel, yaw 90° | `final/tunnel_fixed_owner.png` | `final/tunnel_fixed_shape.png` |
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| Passage, yaw 63° | `final/passage_fixed_owner.png` | `final/passage_fixed_shape.png` |
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| Far view, yaw 0° | `final/far_owner.png` | `final/far_fixed_shape.png` |
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Comparison results:
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| View/LOD | Tiles | Lattice samples | Changed signs | Share changed | Mean / max surface distance* | Unmatched surface samples |
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| --- | ---: | ---: | ---: | ---: | ---: | ---: |
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| Chamber, LOD0–1 | 960 | 35,103,600 | 4,165,142 | 11.8653% | 1.1763 m / 6.5210 m | 69,626 |
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| Tunnel, LOD0–1 | 960 | 35,103,600 | 4,165,142 | 11.8653% | 1.1763 m / 6.5210 m | 69,626 |
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| Passage, LOD0–1 | 960 | 37,240,000 | 2,352,343 | 6.3167% | 1.0102 m / 6.7059 m | 35,520 |
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| Far view, outer LOD6 | 4,770 | 9,470,835 | 856,305 | 9.0415% | 3.5551 m / 5.7456 m | 475,722 |
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\* Surface distance samples every fourth mesh vertex. The mean and maximum
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include matched samples only; unmatched samples are listed separately. The
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distance check searches neighboring 1 m buckets, so treat it as a sampled
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comparison rather than a continuous Hausdorff distance. Chamber and tunnel
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share the same camera position and tile set; only yaw differs.
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The captures show that the shape world retains broad passage structure, but
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they also show a visible change in chamber profiles and rock relief. In
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particular, this does not reproduce the painterly cave reference image. The
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sign shares and sampled distances quantify that gap; the current result should
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be treated as a fast, coherent alternate world rather than a visual match.
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## Detail, walkability, and determinism
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The final coherent detail audit reports `supremum=3.20 vox`, `band=4`, 476,494
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surface sign flips, adjacent correlation 0.9899, and both detail checks PASS.
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Two deliberately bad variants were also run:
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| Variant | Surface-detail check | Spatial-scale check | Process result |
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| --- | --- | --- | --- |
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| Coherent detail | PASS | PASS | exit 0 |
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| Smoothed detail | **FAIL** | PASS | exit 7, expected |
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| Per-voxel noise | PASS | **FAIL** | exit 7, expected |
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The route audit samples packed lattice signs along every exported passage
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centerline: **5,642/5,642 samples remain open**, with native landing floors
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retained. This is a centerline/sign check, not a character-capsule collision
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simulation.
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Three cold hash runs at the passage camera agree across two 6-worker runs and
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one 1-worker run:
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| Hash | 6 workers, run A | 6 workers, run B | 1 worker |
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| --- | --- | --- | --- |
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| Full detail | `0x88e5818a444c1ab3` | `0x88e5818a444c1ab3` | `0x88e5818a444c1ab3` |
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| LOD0 | `0x3d37fc984f0ee55b` | `0x3d37fc984f0ee55b` | `0x3d37fc984f0ee55b` |
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| LOD1 | `0xc314a1f6457f8a31` | `0xc314a1f6457f8a31` | `0xc314a1f6457f8a31` |
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This confirms repeatability and worker-count independence on this machine; a
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second hardware/architecture was not available for a cross-machine hash run.
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## Viewer and evidence files
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Press `V` in the standalone viewer to swap owner density and shape intervals;
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the viewer rebuilds the resident field. The control is handled in
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`Source/StandaloneViewer.cpp` near the keyboard input handler.
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The logs under `final/` include the cold timings, audits, comparisons, captures,
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and determinism runs. In particular:
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- `audit_coherent_final.stdout.log`, `audit_smooth_bad_final.stdout.log`,
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`audit_per_voxel_bad_final.stdout.log`
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- `chamber_compare_final.stdout.log`, `tunnel_compare_final.stdout.log`,
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`passage_compare_landingbox.stdout.log`, `far_compare_lod6.stdout.log`
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- `determinism_final_w6_a.stdout.log`, `determinism_final_w6_b.stdout.log`,
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`determinism_final_w1.stdout.log`
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The LOD6 similarity command took 101.3 s because it also sampled nearest-surface
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distances over the entire outer tile set. That is comparison-analysis time, not
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world-generation time.
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## Failed and abandoned attempts
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- The original build script could print success after failing to leave an
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executable. `Build.ps1` now invokes `cl.exe` directly, propagates its exit
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code, and checks the output file. A launcher attempt before that correction
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failed with Windows `CreateProcess error 2` because the executable was
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absent.
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- The first checked compile then found an `FIntVector` to `FVector` conversion
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error in the optional tile-sort path. The type was corrected; the final
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serial build succeeded. Visual Studio setup still emits a `vswhere.exe`-not-
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recognized diagnostic, but `cl.exe` runs and produces the binary.
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- An earlier smooth-detail audit passed before its gate was tightened. The
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final smooth variant now exits 7 on the surface-detail check, as shown above.
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- A fresh owner far-view capture was stopped after 55 s because the existing
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uncached owner clipmap run takes about 183 s. The existing owner capture was
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reused; the shape far capture completed in 2.65 s. No viewer started by
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someone else was closed.
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