Phong shading

Phong shading took its name after Bui Tuong Phong, the first to mention it in his dissertation at the University of Utah in 1973. Phong shading is an elegant way to render multi-surface shapes by calculating and distributing the light per each point of interest across the surface instead of per vertex. As a result, objects look smooth and more realistic, as the shading uses more complex computations based on the color and illumination of each pixel.^[1]