US 12,315,069 B2
Technique for testing ray for intersection with oriented bounding boxes
Sean Keely, Austin, TX (US); and Daniel James Skinner, Milton Keynes (GB)
Assigned to Advanced Micro Devices, Inc., Santa Clara, CA (US)
Filed by Advanced Micro Devices, Inc., Santa Clara, CA (US)
Filed on Dec. 29, 2022, as Appl. No. 18/090,689.
Prior Publication US 2024/0221284 A1, Jul. 4, 2024
Int. Cl. G06T 15/06 (2011.01)
CPC G06T 15/06 (2013.01) [G06T 2210/12 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method of performing bounding volume hierarchy (“BVH”) traversal for ray tracing operations, the method comprising:
determining error bounds for a rotation operation for a ray;
in response to the error bounds being above a threshold, selecting a technique for determining whether the ray intersects a bounding box based on the error bounds, wherein the technique comprises determining whether a cone defined by the error bounds overlaps with the bounding box;
determining whether the ray hits the bounding box based on the selected technique; and
continuing BVH traversal based on whether the ray hits the bounding box, to obtain a ray tracing result for the ray.