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. 13, 1999
Filed:
Jan. 06, 1997
Howard D Stroyan, Ft. Collins, CO (US);
Hewlett Packard Company, Palo Alto, CA (US);
Abstract
A fast method for rendering opaque and transparent objects that produces a higher quality image at a greater speed for a given level of hardware support. Opaque objects are rendered first utilizing the z-buffer as a solids only depth buffer. Transparent objects are then rendered in multiple passes. Transparent objects are processed in a back to front order to eliminate surface anomalies. The z-buffer is utilized in an alternative mode so that the front-most surfaces of objects in a scene are processed last. Back-facing primitives of transparent objects are rendered and alpha blended first and then the front-facing primitives are rendered and alpha blended second.