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. 12, 2026
Filed:
Nov. 30, 2023
Apple Inc., Cupertino, CA (US);
Ali Rabbani Rankouhi, Bushey, GB;
Luca O. Iuliano, Milton Keynes, GB;
David J. Bermingham, Cambridge, GB;
Christopher A. Burns, Austin, TX (US);
Apple Inc., Cupertino, CA (US);
Abstract
Techniques are disclosed relating to graphics processors that support ray tracing. In disclosed embodiments, ray intersect circuitry is configured to access a traversal stack used for traversal of multiple levels of a bounding volume hierarchy (BVH) acceleration data structure (ADS) according to a depth-first search to retrieve: coordinates of a first bounding region for a child node and a local ray parameter value that indicates a point along a ray at which an intersection with a second bounding region for the child node's parent node was detected. The accelerator circuitry may compare the local ray parameter value with an end ray parameter value to determine whether to traverse to the child node as part of traversal of the BVH.