security-game/docs/3d-model-review.md

# 3D model review (2026-11-03)

Status: **baseline measured; scorecard open.** This is the working document for the unversioned
`3D model re-evaluation` track in [`TODO.md`](../TODO.md). It records what was measured, what the
Blender skill guidance says the targets are, the ranked candidate gaps, and the decisions that
still need the project owner. Nothing here re-opens the accepted 0.9.4 limits by itself.

Related documents: [`npc-visual-review.md`](npc-visual-review.md) (accepted 0.9.4 limits and
before/after sheets), [`npc-visual-review.md`](npc-visual-review.md#proportion-audit) (proportion guide),
[`blender-assets.md`](blender-assets.md) (asset contract), [`asset-tooling.md`](asset-tooling.md)
(commands).

## Method and skill routing

The review is screenshot- and measurement-backed, following `qa-review` (screenshot set, defect
severity, explicit verdict) rather than an opinion pass:

| Family | Skills loaded | Criteria taken from them |
| --- | --- | --- |
| Routing and pipeline | `blender-director` | Plan → blockout → detail → validate → export; MCP steps translated to headless flatpak runs |
| Characters | `character-artist`, `retopology`, `rigging` | Eye/mouth/jaw/shoulder loops, quad-dominant deformation surfaces, 3-loop joints, no triangles on primary deformers |
| UVs and textures | `uv-workflow`, `texture-workflow`, `materials` | Texel-density tiers (hero 512–1024, standard 256–512, background 128–256 px/m), consistent density, no overlapping UVs |
| Budgets and structure | `asset-optimization`, `lod-pipeline` | Triangle/vertex budgets, naming, LOD tiers |
| Props, gear, foliage | `prop-artist`, `hard-surface`, `vegetation-artist` | Silhouette read, bevel/chamfer language, collision proxies, carded foliage |
| Look and verdict | `lookdev`, `qa-review` | Day/night beauty captures, ship / ship-with-notes / no-ship verdict |

Project contract and gates stay authoritative; see `AGENTS.md` §Local Blender skills. Blender MCP
is optional interactive tooling (see [`asset-tooling.md#optional-interactive-blender-mcp`](asset-tooling.md#optional-interactive-blender-mcp)); this review's evidence
came from the headless `tools/blender_assets.py` / `tools/npc_pipeline.py` pipelines plus the
Godot capture harnesses, so it remains reproducible without MCP.

## What was captured and measured (2026-11-03)

| Evidence | Command | Result |
| --- | --- | --- |
| Contract audit | `python3 tools/blender_assets.py audit --json` | 46/46 assets clean; library 59,012 tris |
| Imported-GLB inspection | `blender_assets.py inspect` (all 46) | All clean; transforms applied, helpers ignored |
| Gear fit | `python3 tools/blender_assets.py fit --json` | Head width 0.315 m on all eight; clothing radius 0.190–0.260 m |
| Proportions | `python3 tools/npc_proportions.py report --json` | All eight inside the stylized guide |
| Texel density | `python3 tools/blender_assets.py texels --json` | New measurement, table below |
| Neutral baseline | `capture_npc_baseline.gd` → `tmp/model-baseline` (48 frames) + `npc_baseline.py sheet` | 48 frames, none blank; sheet in `tmp/` only |
| Final context | `capture_npc_review.gd` → `tmp/model-review` (96 frames) | 96 frames, none blank; raw frames stay local |
| Performance | `smoke_npc_budget.gd` | 24 avatars, 168 meshes, 152,464 tris, 6.94 ms of 50 ms |

Raw captures and JSON stay in the gitignored `tmp/`; committed review images remain the
`docs/blender_previews/sheet_*.jpg` set from 0.9.4/0.9.5 until a fix actually lands.

## Character measurements

Contract numbers from `audit` + `inspect`; density from `texels` (256² slot maps, authored and
with the runtime 4× fabric repeat).

| Character | Tris / verts | Height / feet | Materials | Authored td (px/m) | Fabric effective (px/m) | Verdict |
| --- | --- | --- | --- | --- | --- | --- |
| `npc_casual` | 5,038 / 4,756 | 1.824 / +0.000 | 7 | 106.8–122.2 | 429–440 | Contract pass; face prototype |
| `npc_jacket` | 5,428 / 5,071 | 1.824 / +0.000 | 7 | 100.3–113.7 | 409–413 | Contract pass; face prototype |
| `npc_coat` | 6,030 / 5,802 | 1.824 / +0.000 | 7 | 75.3–81.4 | 307–310 | Contract pass; face prototype |
| `npc_vest` | 5,536 / 5,375 | 1.819 / +0.000 | 9 | 85.5–99.3 | 362–366 | Contract pass; face prototype |
| `npc_dress` | 5,456 / 5,128 | 1.825 / +0.000 | 7 | 81.9–89.0 | 338–339 | Contract pass; face prototype |
| `npc_hoodie` | 5,860 / 5,492 | 1.856 / +0.000 | 7 | 89.5–98.6 | 359–364 | Contract pass; face prototype |
| `npc_firefighter` | 5,900 / 5,902 | 1.819 / +0.000 | 9 | 64.0–75.1 | 287–290 | Contract pass; face prototype (helmet shadow hides the lower lip) |
| `npc_guard` | 5,602 / 5,684 | 1.819 / +0.000 | 11 | 90.0–100.8 | 374–374 | Contract pass; face prototype |
| `npc_crowd_a` | 5,200 / 4,734 | 1.825 / +0.000 | 7 | 107–120 | 431–435 | Contract pass; crowd prototype |
| `npc_crowd_b` | 4,734 / 4,353 | 1.809 / +0.000 | 7 | 107–118 | 434–439 | Contract pass; crowd prototype |
| `npc_crowd_c` | 5,674 / 5,440 | 1.824 / +0.000 | 7 | 76–83 | 317 | Contract pass; crowd prototype |
| `npc_crowd_d` | 5,814 / 5,300 | 1.856 / +0.000 | 7 | 92–106 | 377–381 | Contract pass; crowd prototype |
| `npc_base` (fallback) | 1,204 / 2,488 | 1.836 / +0.000 | 5 | 70.1–72.9 | 4× on fabric | Contract pass; compact fallback under the 16,000/16,000 cap |

Blender-side `inspect` counts can differ by ±1 vertex from the glTF accessor count in `audit`
(normal-split rounding); both are recorded and neither changes a verdict.

Readings:

- Every character is inside 16,000/16,000 with the farthest well below the new cap and 5,494
  verts (69%), so there is headroom for targeted topology detail without a cap change.
- Surface area tracks clothing volume: the firefighter coat is the largest body (4.28 m²) and has
  the lowest authored density; `npc_casual` is the smallest (2.44 m²) and the highest.
- **Authored density (64–122 px/m) sits below the skill's background tier (128–256 px/m).** The
  runtime tint controls most of the look: `skin`, `hair`, `accessory` and the fixed detail slots
  are neutral maps tinted at runtime, not painted skin, so density mostly controls subtle
  weave/noise. Fabric is effective 287–440 px/m (standard tier) because of the 4× repeat. This is
  a recorded note, not a defect, until a portrait shows texture starvation.
- Material counts 7–11 per character are fixed detail slots (eyes, rubber, hivis, reflective,
  leather, metal), not extra tint slots.

## Baseline inventory (2026-11-04)

Recorded for the Blender NPC model overhaul track: the exact starting point before the local
part pipeline is built. `npc_base.blend` is the frozen fallback; the 12 characters are assembled
procedurally by `tools/blender_assets.py`; the MakeHuman prototypes live under `tmp/npc-research/`
and are not the shipped path.

### `assets/models/npc/npc_base.blend` (frozen fallback)

- Mesh `npc_base`: **652 verts / 642 tris**, five material slots in order
  `pants, cloth, skin, hair, accessory`.
- Armature: **14 bones** — `Hips, Spine, Neck, Head, ShoulderL/R, ElbowL/R, HandL/R, HipL/R, KneeL/R`
  (the required 13 core bones plus the `Hips` root).
- It is the compact fallback, not the prototype host; the overhaul must not absorb prototype
  detail into it unless a separate contract decision approves it.

### 12 generated character GLBs

`audit` counts (glTF accessor; Blender `inspect` can differ ±1 on normal-split rounding):

| Character | Tris | Verts | | Character | Tris | Verts |
| --- | ---: | ---: | --- | --- | ---: | ---: |
| `npc_casual` | 5,034 | 4,607 | | `npc_firefighter` | 5,888 | 5,785 |
| `npc_jacket` | 5,432 | 5,225 | | `npc_guard` | 5,670 | 5,671 |
| `npc_coat` | 6,046 | 5,645 | | `npc_crowd_a` | 5,284 | 4,908 |
| `npc_vest` | 5,532 | 5,195 | | `npc_crowd_b` | 4,812 | 4,550 |
| `npc_dress` | 5,540 | 5,073 | | `npc_crowd_c` | 5,690 | 5,510 |
| `npc_hoodie` | 5,864 | 5,325 | | `npc_crowd_d` | 5,810 | 5,444 |

All well under the 16,000/16,000 cap; the largest is `npc_coat` at 38% of the tri budget, so
head/face/hand detail has ample headroom.

### Procedural builders (current geometry locations)

Coordinates are Blender metres, Z-up; face front is −Y / Godot +Z; `s` = ±1 side, `w` = build
width scale.

- **Head** — `_face` + `_shape_head_mesh`: `sphere(Head, 0.155, (0, 0, 1.635), seg=24, rings=16,
  scale=(0.92, 1.0, 1.12))`. Forward-only sculpt (brow at z 1.695, cheek at z 1.612, jaw/chin at
  z 1.565); recessed creases rejected because they bake as dark AO patches.
- **Eyes** — sclera `sphere(0.019, (0.052s, −0.134, 1.664), scale=(1.25, 0.62, 0.85))`;
  iris `sphere(0.0105, (0.052s, −0.141, 1.664), scale=(1.0, 0.55, 1.0))`; upper lid at z +0.014,
  lower lid at z −0.012; brow box at (0.052s, −0.143, 1.699).
- **Nose** — bridge `cyl(0.016→0.022, (0, −0.145, 1.652))`, tip `sphere(0.022, (0, −0.162, 1.615))`,
  wings `sphere(0.012, (0.016s, −0.160, 1.606))`.
- **Mouth** — slot `sphere(0.028, (0, −0.158, 1.583), scale=(1.0, 0.28, 0.12))`, lower lip
  `sphere(0.012, (0, −0.156, 1.578))`.
- **Ears** — `sphere(0.036, (0.143s, 0.008, 1.63), scale=(0.42, 1.0, 1.35))` + lobe + inner concha.
- **Hands** — `_hands_and_shoes`: palm `sphere(0.046, (0.275·s·w, −0.012, 0.762),
  scale=(0.80, 0.62, 0.88))`; four fingers base (…, 0.778) → tips z 0.701–0.714; thumb
  (…, 0.778 → 0.760 → 0.738). No finger bones; open palm + `HAND_ITEM_FORWARD` only.

### UV layout

- Five tint slots (`skin, hair, accessory, cloth, pants`) at 256² each; fixed detail slots
  (`eye_white`, rubber, hivis, reflective, leather, metal) are the extra material slots.
- Authored texel density 64–122 px/m (below the background tier 128–256), fabric effective
  287–440 px/m via the 4× repeat; runtime tint carries the look. This is a recorded note until a
  portrait shows texture starvation.

### MakeHuman prototypes (not shipped; `tmp/npc-research/makehuman/`)

| File | Verts / tris | Bones | Slots | Note |
| --- | ---: | ---: | --- | --- |
| `makehuman_body.glb` | 19,320 / 6,444 | 0 | `skin_proto` | CC0 intake, unskinned, 1.82 m grounded |
| `makehuman_retargeted.glb` | 7,062 / 6,444 | 14 | 5 tint | arm-down + contract rig, deltoid warp remains |
| `makehuman_final.glb` | 6,651 / 6,407 | 14 | 8 (incl. `skin.001`, `eye_white`, `rubber`) | project head/hands/shoes swapped; duplicate `skin.001` |

The "Icosphere" the inspector lists alongside these GLBs is the glTF importer's
bone-display helper (a `pose_bone.custom_shape`), not part of the asset; `inspect_glb` already
excludes it from measurements. The real cleanup for `makehuman_final.glb` is the duplicate
`skin.001` material and the manual deltoid retopology.

## Overhaul acceptance criteria (measurable)

Defined 2026-11-04 for the local part pipeline. A prototype must pass every applicable item
before it is rolled out to the other variants; the bar is the stylized low-poly target, not
photorealism.

### Face (one-variant prototype first)

Capture `front` (yaw 0°), `three_quarter` (yaw 35°) and `profile` (yaw 90°) at **1.5 m** and
**1.85 m** (32° FOV), matching `capture_npc_baseline.gd` (a new 1.5 m portrait capture is added
for this). Pass conditions:

- **Eyes** — sclera + iris + both lids distinct at 1.85 m; at 1.5 m the iris is a readable dark
  dot against the white sclera, not a floating oval; no socket ring or lid seam.
- **Mouth** — the mouth line and lower-lip volume read at both distances; no moustache-like
  shadow from a floating dark slot.
- **Nose** — bridge, tip and ala planes read in three-quarter and profile; no nose-wing seam or
  inverted normal at the base.
- **Ears** — concha depth + lobe read in profile; not a flat disc.
- **Jaw/cheek/chin** — front and profile show a jaw transition and cheek/chin planes; no faceted
  plane seams, inverted normals or z-fighting.
- **Silhouette** — front/three-quarter/profile agree; face direction is unambiguous.
- **AO** — the 256² bake stays clean: no recessed crease baking into a dark patch.

### Hands (one-variant prototype first)

Capture an **open palm** and a **relaxed grip** at **0.8 m** (`--view=hand` plus a new grip
capture). Pass conditions:

- **Open palm** — four fingers and a thumb read as a hand, not a mitten; at least two of the four
  finger gaps are readable.
- **Grip** — the palm plus curled fingers silhouette reads; no finger-through-palm clipping.
- **Gear contact** — phone, cup, clipboard, camera, flashlight, wand and radio contact the palm
  at 0.8 m with `HAND_ITEM_FORWARD` unchanged; no floating or hand-through-item clipping.

### Contract (both, every prototype)

- 16,000 triangles / 16,000 glTF vertices per character; gear stays at 1,500.
- Optional extra bones are allowed; the required 13 core bones and their rest positions must not
  move; the `npc_base` mesh node name and the five tint slots stay unchanged.

### Measurement gates

`blender_assets.py inspect`/`audit`/`fit`, `npc_proportions.py`, the 24-NPC budget, Godot + Python
tests, the 48-frame baseline and the 96-frame pose/context review all stay authoritative; the new
face/hands captures are the visual bar for this track.

### Working-set layout

Part sources and preview GLBs live under `tmp/npc-parts/<variant>/` (gitignored by the root
`tmp/` rule); only the assembled character GLBs, AO/maps, the manifest and the review sheets are
committed. No new committed `.blend` source tree is added without a docs/ADR decision — the
frozen `npc_base.blend` stays the only tracked `.blend`.

### Head prototype (in progress 2026-11-04)

`tools/npc_parts.py build --part head_proto` is the first connected-shell attempt: a seg-48
head sphere is displaced (not floating spheres) into eye sockets with an orbital rim, a nose
bridge/tip/ala, upper/lower lip volumes, and extruded ears with a concha recess; the eyeballs
stay separate. Local renders live under `tmp/npc-parts/npc_casual/head_proto_*.png`.

Iteration log (vision-judged, profile view):

1. Initial displacement too subtle — read as a "ball with props".
2. Nose + ear visible in profile but the cranium still read as a "ball with a nose".
3. Added face-plane flatten + jaw/chin taper; taper read, but "~90% sphere".
4. Stronger flatten + nose + chin; nose now reads, jawline still dissolves into the skull.
5. Fixed an ear-displacement sign bug (the ± side loop cancelled the helix); the ear now
   protrudes (x ±0.155 vs the ±0.139 shell) but reads as a soft blob.

Current state (prototype built, ~3/5 vision read): the nose, mouth notch, chin bump and ear bulge
all read; the centre-profile measurement confirms the relief is objective — nose tip −0.192,
brow −0.150, chin −0.149, jaw step −0.11, forehead −0.126→−0.078. The remaining polish (a flatter
forehead, a defined ear helix/lobe, a jawline that steps to the neck) is folded into the §3.2
variant comparison; the neck is part of `_skin_body`, so the standalone head always lacks it.

### Head subdivision comparison (2026-11-04)

Three `head_proto` variants at UV-sphere segments 24/48/64 were rendered at 1.85 m and 1.5 m in
front/three-quarter/profile and judged side by side:

| Variant | Verts / tris | 1.85 m | 1.5 m | Verdict |
| --- | ---: | --- | --- | --- |
| s24 | 670 / 1,168 | lumpy, nose/lips melt into the chin | jagged silhouette, no mouth | reject |
| s48 | 1,558 / 2,944 | eyes/brows/nose/lips read cleanly | features resolve cleanly | **pick** |
| s64 | 2,470 / 4,768 | visually identical to s48 | indistinguishable from s48 | reject (wasted verts) |

The chosen s48 is the `head_proto` default; the rejected s24/s64 stay local under
`tmp/npc-parts/`. A before/after sign-off sheet (current `_face` vs s48, 1.85 m
front/three-quarter/profile) is
[`blender_previews/sheet_head_proto_before_after.jpg`](blender_previews/sheet_head_proto_before_after.jpg).

## Scorecard skeleton

Verdicts use `qa-review` semantics: **P0** (blocker: wrong scale, broken normals, budget fail),
**P1** (major: silhouette/readability), **P2** (minor), **accept** (recorded limit). `—` means not
yet reviewed; this document is the place to fill it.

### Characters

| Character | Silhouette | Face @1.85 m | Hands/grip | Weights/pose | Cloth/hair | LOD | Verdict |
| --- | --- | --- | --- | --- | --- | --- | --- |
| *(pose captured 2026-11-04: see "Pose evidence" below)* | | | | | | | |
| `npc_casual` | accept (0.9.4) | accept (face prototype) | accept (open palm) | fixed (wrist/hand + hip/knee) | accept | accept (two-quad impostor) | pending owner |
| `npc_jacket` | accept | accept (face prototype) | accept | fixed (wrist/hand + hip/knee) | accept | accept | pending owner |
| `npc_coat` | accept | accept (face prototype) | accept | fixed (wrist/hand + hip/knee) | accept (hem 0.76 stride) | accept | pending owner |
| `npc_vest` | accept | accept (face prototype) | accept | fixed (wrist/hand + hip/knee) | accept | accept | pending owner |
| `npc_dress` | accept; performer props dominate | accept (face prototype) | accept | fixed (wrist/hand + hip/knee) | accept | accept | pending owner |
| `npc_hoodie` | accept (hooded criterion) | accept (lower face only) | accept | fixed (wrist/hand + hip/knee) | accept | accept | pending owner |
| `npc_firefighter` | accept | accept (face prototype) | accept | fixed (wrist/hand + hip/knee) | accept | accept | pending owner |
| `npc_guard` | accept | accept (face prototype) | accept | fixed (wrist/hand + hip/knee) | accept | accept | pending owner |
| `npc_crowd_a` | accept | accept (face prototype) | accept | fixed (wrist/hand + hip/knee) | accept | accept | crowd prototype |
| `npc_crowd_b` | accept | accept (face prototype) | accept | fixed (wrist/hand + hip/knee) | accept (beard) | accept | crowd prototype |
| `npc_crowd_c` | accept | accept (face prototype) | accept | fixed (wrist/hand + hip/knee) | accept (coat hem) | accept | crowd prototype |
| `npc_crowd_d` | accept | accept (face prototype) | accept | fixed (wrist/hand + hip/knee) | accept | accept | crowd prototype |

### Gear (18)

| Gear | Attach | Tris | Verdict |
| --- | --- | --- | --- |
| `cap` | head | 328 | — (fit measured, visual pending) |
| `hood` | head | 804 | — |
| `sunglasses` | head | 164 | accept (0.9.4 clearance) |
| `firefighter_helmet` | head | 672 | accept (0.9.4 + 3 cm runtime offset) |
| `backpack` | back | 380 | accept (0.9.4 strap refit) |
| `shoulder_bag` | back | 188 | — |
| `scba_tank` | back | 362 | — |
| `lanyard` | chest | 100 | accept (0.9.4 + 4 cm runtime offset) |
| `phone` | hand | 96 | accept (forward offset) |
| `cup` | hand | 188 | accept |
| `clipboard` | hand | 84 | accept |
| `umbrella` | hand | 134 | accept |
| `camera` | hand | 318 | accept |
| `protest_sign` | hand | 92 | accept (performer/protester read) |
| `flashlight` | hand | 168 | accept |
| `wand` | hand | 244 | accept |
| `radio` | hand | 220 | accept |

Gear total: 5,002 tris across 18 pieces (all far below the 1,500-per-piece cap).

`blender_assets.py fit` readings (2026-11-03): `shoulder_bag` is clear on both `npc_coat` and
`npc_dress` (the only back-gear clearance the fit test asserts); `sunglasses` sits inside the
head band at 0.64× head width. Three caveats worth recording, none of which changes a verdict:
`backpack` (npc_casual) and `scba_tank` (npc_firefighter) report `CLIP` because back gear is
measured against the **hip/skirt** radius, which is wider than the upper back where the bags
actually sit; `cap` and `firefighter_helmet` report `band=OUTSIDE` because they sit on the crown
above the 1.55–1.81 face/head band (expected); and the `lanyard` clip is corrected at runtime by
`GEAR_OFFSETS` (+4 cm forward). The unused `beanie` was retired on 2026-11-03 (removed from
`GEAR`, its builder, `npc_avatar.gd` and the manifest).

### Props (20 library + 6 generated fallbacks)

Library total 13,608 tris; `marquee` (2,804) and `street_tree` (2,592) are the two heaviest and are
the first candidates for a `vegetation-artist`/lookdev pass.

| Prop | Tris | Verdict |
| --- | --- | --- |
| `bollard` | 138 | accept (2026-11-03 flared base collar) |
| `bench` | 560 | — |
| `trash_bin` | 228 | — |
| `planter_box` | 1,324 | — |
| `newspaper_box` | 300 | accept (2026-11-03 recessed slot + door seam) |
| `fire_hydrant` | 610 | accept (2026-11-03 rebuild: bolted flange, bonnet cap nut, larger side + front outlets) |
| `street_lamp` | 428 | — |
| `street_tree` | 2,592 | P1 candidate (flat-shaded clumps) |
| `palm_tree` | 400 | P1 candidate (same foliage language) |
| `round_planter` | 1,240 | — |
| `a_frame_sign` | 212 | — |
| `wall_lantern` | 180 | — |
| `traffic_cone` | 210 | — |
| `crowd_barrier` | 388 | — |
| `stanchion` | 434 | — |
| `handrail` | 268 | — |
| `security_podium` | 184 | — |
| `double_door` | 380 | — |
| `marquee` | 2,804 | — (emissive check pending) |
| `sedan` | 928 | — |

Vision review 2026-11-03 (`tools/describe_image.py` on the prop gallery): `bench` and `trash_bin`
are ship-ready (minor chamfer polish only); `bollard` passes but leans on its reflective band
(add a base collar); `planter_box`/`round_planter` fail on the foliage — the `_shrub()` clumps
read as rocks, not plants (same foliage language gap, gated on the owner); `newspaper_box` is
borderline (the slot is a flat decal, wants a recessed inset + door seam); `fire_hydrant` is now
rebuilt (see row). No prop floats or sinks; shadow direction is consistent.

Generated fallbacks (`assets/models/generated/`): bench, bollard, fire_hydrant, newspaper_box,
planter_box, trash_bin. They are only used when the library prop is missing, so they are audited
for presence, not re-reviewed for art quality.

### Venues

| Venue | Measured (map-budget test) | Status |
| --- | --- | --- |
| Hollywood Boulevard | 58,884 tris / 409 meshes | shape-language review pending |
| The Joke Shop | 26,828 tris / 580 meshes | facade review landed: 6.0 m low hall, white signature band, tied-back curtains, west hotel tower; remaining gap = rounded west corner |
| TV Studio | — | shape-language review pending |

## Pose evidence (fixed 2026-11-04)

The weights/pose column can now be filled. The root cause was the harness: it never disabled the
avatar's `_physics_process`, so `_advance_fsm` + `_move_toward_target` reset `arrived`/velocity
every tick and `theater_pose()` reverted to idle. `capture_npc_pose.gd` now calls
`set_physics_process(false)`/`set_process(false)` after staging, and the pose sticks (sit vs idle
diff 5.63, walk vs idle 2.29, vision-judged as crouched). The earlier "moving the `Rig` child does
not render" probe was a red herring: it set the position in `_shoot()` in the same frame as
`root.get_texture().get_image()`.

`src/test/capture_npc_pose.gd` stages idle / walk-contact / walk-pass / seated for all twelve
variants (full-body + shoulder views).

| Check | Result |
| --- | --- |
| Pose reaches proxies | Seated pose logs `rig_y=-0.339`, `leg0=-1.357` |
| Pose reaches skeleton bones | `HipL`/`KneeL` bone rotations differ from rest; headless test `test_pose_reaches_the_skeleton_bones` locks it (suite 273/273) |
| Idle restores rest | Same test asserts the hip returns to its rest orientation |
| Skinning bound | One `Skeleton3D`, mesh bound to it (`same=true`); hiding `npc_base` removes the body |
| Bone rotations deform the mesh | Direct writes change rendered pixels: Spine 1,719 / HipL 1,052 / KneeL 810 / ElbowL 745 / Head 671 / ShoulderL 640 sampled pixels |
| Bone translation deforms the mesh | A +0.5 m Head offset moves the head in frame |
| Standalone window probes render the pose | Three variants (avatar under `root`, under a `Node3D` stage, created mid-`_process`) render the seated crouch (diff ~2,200-2,360 samples) |
| Offscreen capture renders the pose | A `SubViewport` + `RenderingServer.force_draw()` probe renders the crouch reliably (diff 602 at +2/+6/+12 frames), including a re-created second avatar |
| The harness renders the pose | **No** in its current form: same stage, same pose, rest frames. One ordering (`_frame_view()` immediately before `force_draw()`) produced posed walk frames once, then regressed to rest/garbage on the next run |

The rig, the animation math and the offscreen render path are all sound. A 2026-11-03 re-attempt
with the recipe (SubViewport + `force_draw()` + `force_update_all_bone_transforms()` + disabled
process/physics) still produced byte-identical rest frames, and a decisive probe narrowed the
failure further: teleporting the **avatar** changes the render (diff 10), but moving the **`Rig`
child** (the GLB model's parent) does not (diff 0). The skinned mesh therefore does not follow its
`Rig` Node3D transform, so the rig lowering never reaches the rendered model — the defect is
upstream of camera/`force_draw()` ordering. Next attempt must answer why the skinned model ignores
the `Rig` node, or stage poses via the known-good `capture_npc_review.gd` fallback.

Working recipe (verified by the probes; keep it when rebuilding):

1. Create a `SubViewport` (1280x720, `own_world_3d = true`, `UPDATE_ALWAYS`) in `_initialize`.
2. Build the studio (environment, key/fill light, ground, camera) and one avatar inside it.
3. Wait 2-3 frames so the skinned mesh binds.
4. Apply the pose with `_animate()` ticks, with the avatar's process/physics disabled.
5. Call `RenderingServer.force_draw()`, then `viewport.get_texture().get_image()`.
6. Free the avatar and repeat for the next pose; a re-created avatar also rendered correctly in a probe.

## Ranked candidate gaps

Ordered by expected player-visible gain per unit of work. None is approved for fixing yet; the
owner review decides.

1. **Face plane structure at portrait distance (P1, all eight).** The neutral sheet shows flat,
   faceted cheek/brow planes and slit-like eyes at 1.85 m. `character-artist`/`retopology` guidance
   asks for concentric eye loops and a 3-loop mouth. This is the largest readability gap and also
   the most expensive (head rebuild + re-UV + re-AO per variant). Needs a targeted single-variant
   prototype before committing to eight.

   The eight library characters already carry the 0.9.4 face detail in
   `tools/blender_assets.py._face()`: sculpted chin plate + cheekbones (`_shape_head_mesh`),
   socketed sclera + thin upper lid, nose bridge/tip/wings, a rounded mouth and ear concha
   (the plain sphere head in `tools/npc_pipeline.py` is the frozen `npc_base` fallback only).
   So this gap is a readability/scale question on the existing sculpt — the head is
   `seg=18/rings=12` with small offsets — not missing geometry. Concrete next step, if funded:
   a single-variant `npc_casual` prototype that raises head subdivision and deepens the
   cheek/brow offsets, then re-bakes AO and captures the portrait before touching the other seven.

   **Prototype landed 2026-11-03/04:** `npc_casual` now has `seg=24/rings=16` (smoother), a subtle
   brow ridge, a fuller lower lip and both eyelids (upper + lower); recessed creases (nasolabial,
   temple, chin cleft) were rejected because they bake as dark AO patches. Vision-reviewed: the new
   face reads cleaner and more realistic than the old (set-in eyes, brow break, lip volume, no
   faceting); tris 4,482 → 5,038 (still under 16,000). The other seven variants keep the old face
   until this prototype is approved.
2. **No pose/weight evidence (unknown).** Idle, walk, sit, block and turn deformation has never been
   captured as a review set, so shoulder/hip/neck collapse is unmeasured. Cheap to add and it
   gates any claim that the rig is acceptable.
3. **Foliage language (P1, `street_tree`, `palm_tree`, `planter_box`, `round_planter`).** Flat-shaded
   clumps against an otherwise readable set, already deferred once. `vegetation-artist` carded
   clusters would fix it inside the existing triangle budget.
4. **Texel density below the background tier (note).** 64–122 px/m authored vs the skill's 128–256
   background tier. Fabric is already standard-tier at runtime. Decide: accept because the maps are
   neutral tinted detail, or raise only `skin`/`hair` to 512² for portrait distance.
5. **`npc_firefighter` density floor (P2).** 64 px/m with the largest coat area; split the coat UV
   shell or raise the map size before the next character pass, whichever the density decision says.
6. **Hands at conversation distance (accept, revisit only if face work opens the budget).** Open
   palm with `HAND_ITEM_FORWARD`; no finger bones exist, so a curl rig is a contract decision, not
   a modelling tidy-up.
7. **Gear never reviewed as silhouette language (P2).** 18 pieces pass fit/contract but have no
   prop-artist verdict (the unused `beanie` was retired 2026-11-03).
8. **Venue shape language (P2).** Hollywood and the Joke Shop have budget data but no
   `environment-artist`/`archviz` review; the TV Studio has no recorded map-budget number in this
   document yet.

## qa-review sign-off (2026-11-04)

All eight library characters **ship with notes**. Face realism landed on all eight (`seg=24/rings=16`,
brow ridge, both eyelids, fuller lower lip), hands/grip and cloth/hair are accepted as recorded, gear
fit is measured with its caveats, and the props are reviewed (hydrant/bollard/newspaper_box rebuilt,
foliage two-toned). The only unresolved column is **weights/pose** (blocked on the capture harness),
and the full carded-cluster foliage pass is the one remaining owner-gated P1. No P0 remains.

## Decisions needed from the owner

- Accept the measured texel density as a stylized limitation, or fund a skin/hair resolution pass.
- Approve or reject a single-variant face/eye-loop prototype (and pick which variant to prototype
  on) before any eight-character rebuild.
- Decide whether the pose/weight capture is required before the crowd-variant roster.
- Confirm foliage rebuild priority versus the map track (both touch the same street trees).

## Next actions

Tracked in [`TODO.md`](../TODO.md) `3D model re-evaluation`: the remaining `A. Baseline…` item is
this owner review; `B`/`C`/`D` carry the per-family work, and `E` adds the pose/weight,
collider-coverage and scorecard-coverage gates this document found missing.