A graphics system including a custom graphics and audio processor produces exciting 2D and 3D graphics and surround sound. The system includes a graphics and audio processor including a 3D graphics pipeline and an audio digital signal processor. Full-scene shadow mapping can be performed by having the...http://www.google.es/patents/US6664962?utm_source=gb-gplus-sharePatente US6664962 - Shadow mapping in a low cost graphics system
