Inventors:
Matthew Komsthoeft - Santa Clara CA
K. Michael Ockenden - Vancouver, CA
Yoshitaka Yasumoto - Osaka, JP
Kazuki Hirose - Bellevue WA
Assignee:
Nintendo Co., Ltd. - Kyoto
International Classification:
G06T 1560
US Classification:
345426, 345421, 345422, 345582, 345589
Abstract:
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 lighting hardware calculate distance using a distance attenuation function. If more precision is desirable, texture coordinate generating hardware can be used to calculate texture coordinates that index into a ramp texture lookup storing precision distance values. A unique ramp texture providing redundant values can be used to eliminate ramp texture lookup errors.