or three-dimensional bodies, bump mapping projects surface structures. This makes flat polygons appear uneven, raised and relief-like. The bumpmapped surface has a three-dimensional texture with heights and depths achieved through gradations of brightness
The bumpmapping structures are stored as textures and projected onto flat surfaces or even 3D bodies as in texture mapping. Theshadows are created with lighting models, they are contained in the textures and cannot be changed by the lighting of
the graphic model after bumpmapping. The technique of bumpmapping is mainly used in computer games because it is not as computationally intensive as ray tracing and because it achieves a high realism effect.