Pbr challenge 3D models

Physically based rendering, or PBR, denotes models which are rendered accurately and consistently in any lighting conditions due to the texturing workflows used in the creation process. Reflectiveness, surface roughness and colouring, together with the principle of energy conservation and the advantages of the bidirectional reflectance distribution function (BRDF), provide the best standard for any 3D objects that can be rendered in any lighting conditions. A PBR 3D model will never reflect more light than hits its surface. PBR textures are available in all standard file formats. CGTrader also offers 3D model conversion to PBR for some models. Use PBR models across all major rendering engines, like Unity, Unreal engine, Marmoset Toolbag 3 and others, which support physically based rendering.