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. 13, 2014
Filed:
Aug. 06, 2010
Jon Jansen, Theale, GB;
Louis Bavoil, Theale, GB;
Jon Jansen, Theale, GB;
Louis Bavoil, Theale, GB;
NVIDIA Corporation, Santa Clara, CA (US);
Abstract
A method for rendering a volumetric shadow includes defining a light source ray emanating from a light source, wherein the light source ray intersects a plurality of occluding primitives included within the scene. The method further includes computing an aggregate absorption function for the light source ray, whereby a per-primitive absorption function is computed for each of the plurality of occluding primitives intersecting the light source ray, and the resulting plurality of per-primitive absorption functions are summed to form an aggregate absorption function for the light source ray. A transmittance value is computed as a function of the aggregate absorption function, the transmittance value used to render the volumetric shadow within the scene.