When you start rendering this model, a large amount of data and information enters the rendering engine and the rendering engine It also produces its final output using its own algorithms and precise calculations. For example, in 3D Studio Max, you created a 3D model and defined light sources, different textures, and so on. In fact, all your modeling efforts, whether in the field of animation, architecture, games, filmmaking, etc., should be rendered as a final product and reach the customer, and it is the rendering engine that has the final say.
V-ray is a powerful rendering engine in the field of 3D modeling from the powerful company Chaos Group.