lilleyse
commented
6 years ago The documentation could be improved, but this is the mapping that obj2gltf uses for understanding mtl values as pbr.
| Name | Slot |
|---|---|
| occlusion value | Ka |
| emissive color | Ke |
| base color | Kd |
| metallic | Ks |
| roughness | Ns |
| alpha | d (or Tr, but flipped) |
| occlusion texture | map_Ka |
| emissive texture | map_Ke |
| base color texture | map_Kd |
| metallic texture | map_Ks |
| roughness texture | map_Ns |
| normal texture | map_Bump |
So if the obj contains multiple meshes and each one use a different material.
In this case, if mesh A and mesh B in this obj use different basecolor, metallic map, and roughness map, it can be achieved in the mtl file by setting map_Kd, map_Ks, and map_Ns in PBR case. However, this does not provide way to set normal map, emissive texture, and AO texture since these 3 seems to be given in the command line following --normalTexture, --emissiveTexture, -- occlusionTexture.
So how can be convert the obj like this with multiple texture set?
Thank you. Sincerely