Ray tracing and gaming.. a year later

If you are new to the topic of ray tracing you might want to read through this section. Ray tracing is a rendering technique that generates a 2D image out of a given 3D scene. This is done by simulating the physics of light propagation using rays. The algorithm shoots, for every pixel on the screen, a so-called "primary ray" from the perspective of the eye of the viewer. The ray tracing algorithm then determines which object is hit first on the path of the ray.