ABSTRACT
Typical graphics terminals today are raster displays. A raster display renders a picture scan line by scan line. A scan line is a horizontal line consisting of many small, tightly packed dots called pixels. To display a scene using a raster display, we need to compute the color and intensity of the light at each pixel. The purpose of this chapter is to explain how to compute the color and intensity of light for each pixel given a three-dimensional model of the objects in the scene and the location, color, and intensity of the light sources.
