Blender Normalization Worker Spec

Purpose

Define the standard working conversion step between raw sourced assets and Unity-ready artifacts.

Inputs

• raw/<asset_id>/source_download.*
• Source metadata snapshot (asset_manifest.json)
• Optional preview images for manual QA

Outputs

• working/<asset_id>/normalized.blend
• working/<asset_id>/normalized.glb
• working/<asset_id>/validation_report.json
• working/<asset_id>/preview.png

Standard Steps

1. Import raw asset into Blender.
2. Apply/normalize transforms (scale, forward/up axes, center pivot policy).
3. Rename objects and materials into deterministic schema-compatible names.
4. Merge duplicate materials and flatten texture naming.
5. Optional rig conversion for animation-ready assets.
6. LOD/decimate pass toward target budget:
   • Infantry: 1k–6k tris
   • Elite infantry/hero: 4k–12k tris
   • Small vehicle: 3k–15k tris
   • Large vehicle: 10k–40k tris
7. Export GLB + Blender source; emit preview.

Validation Hooks

• Missing textures check
• Non-manifold geometry
• Degenerate scale check
• Bone/rig consistency if rigged=true
• Texture resolution budget warning

Hard fail on:

• corrupt import
• zero-geometry output
• missing provenance metadata

Policy Controls

• All jobs read profile from --profile.
• Profiles map to stylistic transforms:
  • dinosw_lowpoly_v1: aggressive edge simplification, material flattening, hard silhouette preservation.
  • prototype_fast_v1: faster import path with lower cleanup strictness.