Unity Export

When to Use

• Shipping assets to Unity
• Humanoid character export
• Prefab-oriented mesh splits and LODs

Pre-Flight

1. asset-optimization

   PASS

2. lod-pipeline

   if LODs required

3. collision-proxy

   if physics required
4. Apply transforms; correct pivots

Recommended Formats

Transform Defaults

Unit: Meters (Unity 1 unit = 1m)
Forward: -Z (Blender) → verify in Unity
Scale Factor: 1.0 (fix if model tiny/huge)

Materials

• Prefer single material slots matching Unity workflow
• Metallic-Roughness for GLTF
• Embed or provide textures beside FBX
• Name materials

  MAT_

  consistently

Characters

• T-pose or A-pose per project
• Root bone at origin; hips correctly placed
• Humanoid: clear bone naming; test Avatar mapping
• Export animations as separate clips when needed

LODs & Collision

• LOD Group naming:

  SM_Name_LOD0..N

  or Unity LOD Group meshes
• Collision: convex meshes or Unity primitive colliders from proxies
• See

  collision-proxy

  for UCX-style naming if using FBX conventions

Verify in Unity

• Scale vs reference cube
• Pivot / prefab placement
• Normals / tangents
• Materials assigned
• LOD transitions
• Animator clips (if any)

Constraints

MUST DO

• Validate before export
• Document scale factor used
• Test import once before declaring done

MUST NOT DO

• Assume FBX settings without project convention
• Leave unused high-poly LODs in prefab

Reference Guide

references/unity-checklist.md

references/unity-materials.md