The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 10, 2001
Filed:
Aug. 11, 1998
Applicant:
Inventors:
Roger Swanson, Santa Clara, CA (US);
Daniel Hung, Santa Clara, CA (US);
John W. Brothers, Palo Alto, CA (US);
Assignee:
S3 Graphics Co., Ltd., Grand Cayman, KY;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06T 1/560 ;
U.S. Cl.
CPC ...
G06T 1/560 ;
Abstract
A method of providing specular highlights to 3D graphics using Phong illumination calculations spaces the pixels subject to the calculations apart in direct relationship to the number of lights contributing to the highlights. Linear, quadratic, or cubic attenuation is then applied to interpolate the values for the pixels not subject to the calculations.