For the rest, the luminance would not be influenced. Figure 10 illustrates the effect of the direct light. The ambient light. The direct light. The materials for the 3D objects also vary the lighting effects.
Different materials have different reflection parameters.
For example, metal reflects light more than diffusion, and cloth diffuses light more than reflection. Therefore, choosing one type of materials defines the parameters of the reflection and diffusion. After determining the light sources and materials, the lighting process can be completed. At this stage, the colors of all vertices are calculated according to the predefined rules. Note that the interiors of the triangles are not filled at the lighting stage.