Introduction of some graphics concepts, personal excerpts or sorting, as the entry quotes of personal articles;
Shading :
In the field of computer graphics, shading refers to the use of an equation to calculate the degree of emission along a certain viewing direction based on material properties (such as diffuse reflection properties, etc.), light source information (such as light source direction, irradiance, etc.) The process; we also call this equation the lighting model (Lighting Model);
Different lighting models can be used for different purposes ; simple and fast algorithms can be used in interactive graphics fields such as CAD that pursue response speed, artistic effects such as cartoon oil paintings can use non-photorealistic algorithms, and realistic CG movies or Games can use algorithms based on physics modeling;
The model based on physical shading generally uses the BRDF model;