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:
May. 05, 2009
Filed:
Aug. 12, 2005
Mark J. Kilgard, Austin, TX (US);
Rui M. Bastos, Porto Alerge, BR;
Johnny S. Rhoades, Durham, NC (US);
Cass W. Everitt, Round Rock, TX (US);
Wei-chao Chen, San Jose, CA (US);
Mark J. Kilgard, Austin, TX (US);
Rui M. Bastos, Porto Alerge, BR;
Johnny S. Rhoades, Durham, NC (US);
Cass W. Everitt, Round Rock, TX (US);
Wei-Chao Chen, San Jose, CA (US);
NVIDIA Corporation, Santa Clara, CA (US);
Abstract
Systems and methods for dynamically canceling texture fetches may improve texture mapping performance. A shader program compiler inserts condition code writes and condition code comparison operations for shader program instructions that contribute to a texture read instruction and do not need to be executed if certain conditions are met. During execution of the shader program, the inserted condition codes are used to compute a dynamic writemask that indicates if the texture data resulting from the texture read is unnecessary. The dynamic writemask is used to cancel unnecessary texture fetches during execution of the shader program.