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. 31, 2012
Filed:
Oct. 10, 2008
Mark S. Grossman, Palo Alto, CA (US);
Thomas Frisinger, Shrewsbury, MA (US);
Daniel M. Gessel, Newton, MA (US);
Mark S. Grossman, Palo Alto, CA (US);
Thomas Frisinger, Shrewsbury, MA (US);
Daniel M. Gessel, Newton, MA (US);
Advanced Micro Devices, Inc., Sunnyvale, CA (US);
Abstract
Embodiments include a texture mapping processor incorporating a dynamic level of detail map for use in a graphics processing system. Level of detail values are defined, with 0 being the finest and corresponding to the largest mipmap level. Each bound texture in a graphics object is assigned an identifier. This identifier is used as an index into a minimum-LOD value tracking table that is updated whenever a texel is fetched. A texture processing module controls when the tracking table is initialized and read back, and which identifiers are tracked. The minimum-LOD values in the tracking table are accompanied by a coarse region access mask to associate a minimum LOD value with a specific region of the image or object. A clamping table contains LOD clamp values for each region and a region code that specifies the coarseness of the LOD associated with each region of the texture.