Advanced · 9 min
Understanding PBR maps
Base colour, metal, roughness and normal — what each does.
- Base colour: the flat colour with no lighting
- Metalness: which parts are metal
- Roughness: how blurry reflections are
- Normal: fine surface bumps without extra triangles
Hunyuan 3D Pro returns all four. Trellis 2 returns base colour without a normal map; the asset page tells you which maps are present.
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