06611265 is referenced by 12 patents.

A lighting evaluation unit in a graphics processing system. The lighting evaluation unit includes a calculation unit having dot product circuitry used in determining specular, diffuse, spot, and attenuation components of a lighting equation in parallel. In one embodiment, the lighting evaluation unit is constructed in a pipeline manner, and includes multi-use circuitry for performing dot product calculations.

Title
Multi-stage fixed cycle pipe-lined lighting equation evaluator
Application Number
9/691644
Publication Number
6611265 (B1)
Application Date
October 18, 2000
Publication Date
August 26, 2003
Inventor
Mark Shuxin Zheng
San Jose
CA, US
Dong Ying Kuo
Pleasanton
CA, US
Mike Hong
Cupertino
CA, US
Agent
Carr & Ferrell
US
Assignee
S3 Graphics
US
IPC
G06T 17/00
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