closed-surface-uv-coveragelisted

Ensure textures and decals cover all visible surfaces of a closed or extruded Blender asset, especially front/back caps and sidewalls, instead of relying on partial projected planes, curves, or linework overlays. Use when back textures do not fill the model, side textures are missing, spin/turntable views expose plain sidewalls, or a model needs separate UV treatment for caps and side surfaces.
MAX-786/claude-3d-harness · ★ 6 · AI & Automation · score 74

Install: claude install-skill MAX-786/claude-3d-harness

# Closed Surface UV Coverage This skill prevents a common false pass: a model looks textured from the front because it has a projected front image or curve overlays, but the closed surface has untextured back caps or plain sidewalls when viewed in a spin/turntable. ## Failure modes to catch - Back detail is only a floating plane or curve overlay, not a material/UV on the back surface. - Sidewalls have procedural color only; no side UV island, generated/object coordinate material, or baked strip. - A back projection covers only a center shape and leaves the actual silhouette/back mesh plain. - Side/back QA uses front-biased frames and misses edge-on/back-on samples. - Decorative HUD/aura is mistaken for surface texture coverage. ## Required surface taxonomy For extruded/logo-like assets, classify visible surfaces before look-dev: 1. `front_cap` — canonical front texture/decal. 2. `back_cap` — back texture, back linework, or baked/procedural fill mapped to the real back cap. 3. `sidewall` — depth surface connecting front/back, with its own UV parameterization or procedural material. 4. `overlay_context` — HUD/aura/circles; never counted as model surface coverage. ## Workflow 1. **Audit current coverage**: list mesh material slots, UV layers, image texture nodes, and face counts for front/back/side material indices. 2. **Reject overlay-only fixes**: curves/planes may add rim accents, but they do not satisfy back/side fill unless the mesh surface beneath is also textured/