vcglib
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extending the OBJ MTL format to enable specifying physically-based rendering
Hi there, while working with VcgLib i figured out normal maps arent supported for the OBJ import/export the "norm" attribute isnt featured in the official OBJ format specs, but has been extended for physically-based rendering in various softwares read more here from @bhouston
Pr/map_Pr # roughness
Pm/map_Pm # metallic
Ps/map_Ps # sheen
Pc # clearcoat thickness
Pcr # clearcoat roughness
Ke/map_Ke # emissive
aniso # anisotropy
anisor # anisotropy rotation
norm # normal map (RGB components represent XYZ components of the surface normal)
is that an extension that VcgLib authors would consider ? having normal map read / write feature would be usefull, thx