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:
Feb. 01, 2011
Filed:
Dec. 13, 2006
Steven E. Molnar, Chapel Hill, NC (US);
Jerome F. Duluk, Jr., Palo Alto, CA (US);
Henry P. Moreton, Woodside, CA (US);
Daniel P. Wilde, Cedar Park, TX (US);
Mark J. French, Raleigh, NC (US);
Bengt-olaf Schneider, Yorktown Heights, NY (US);
Jonathan J. Dunaisky, Fort Collins, CO (US);
Weizhong Xu, Fremont, CA (US);
Steven E. Molnar, Chapel Hill, NC (US);
Jerome F. Duluk, Jr., Palo Alto, CA (US);
Henry P. Moreton, Woodside, CA (US);
Daniel P. Wilde, Cedar Park, TX (US);
Mark J. French, Raleigh, NC (US);
Bengt-Olaf Schneider, Yorktown Heights, NY (US);
Jonathan J. Dunaisky, Fort Collins, CO (US);
Weizhong Xu, Fremont, CA (US);
NVIDIA Corporation, Santa Clara, CA (US);
Abstract
A technique for handling floating-point special values, e.g., Infinity, NaN, −Zero, and denorms, during blend operations is provided so that blend operations on fragment color values that contain special values can be performed in compliance with special value handling rules. In particular, the presence of special values is detected or the potential presence of special values is detected. This information is used to qualify when blend optimizations may be performed, so that floating point blend operations can remain conformant to special value handling rules.