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# .MTL with PBR extension. newmtl pbr Ka 0 0 0 Kd 1 1 1 Ks 0 0 0 Ke 0.1 0.1 0.1 Pr 0.2 Pm 0.3 Ps 0.4 Pc 0.5 Pcr 0.6 aniso 0.7 anisor 0.8 map_Pr roughness.tex map_Pm metallic.tex map_Ps sheen.tex map_Ke emissive.tex norm normalmap.tex