公开(公告)号：US20250131638A1

公开(公告)日：2025-04-24

申请号：US18492719

申请日：2023-10-23

Applicant: QUALCOMM Incorporated

Inventor： Syamantak MITRA ,  Anamitra MANI ,  Geetika MALHOTRA ,  Kalyan Kumar BHIRAVABHATLA ,  Alexei Vladimirovich BOURD

IPC: G06T15/06 ,  G06T17/00

Abstract: Aspects presented herein relate to methods and devices for graphics processing including an apparatus, e.g., a GPU. The apparatus may perform a ray traversal process for a second frame in a set of frames starting at a first node in a plurality of nodes, where a ray in the ray traversal process previously intersected a first primitive in a first frame, where the first primitive corresponds to a first node ID. The apparatus may also detect whether the ray intersects the first primitive in the second frame. Further, the apparatus may store the first node ID for the first node based on the ray intersecting the first primitive in the second frame, or re-perform the ray traversal process for the second frame starting at a root node in the plurality of nodes based on the ray not intersecting the first primitive in the second frame.

公开(公告)号：US20210383591A1

公开(公告)日：2021-12-09

申请号：US16896955

申请日：2020-06-09

Applicant: QUALCOMM Incorporated

Inventor： Piyush GUPTA ,  Geetika MALHOTRA ,  Pavan Kumar AKKARAJU

IPC: G06T15/06 ,  G06T15/08 ,  G06T17/00

Abstract: A method is presented. The method includes organizing a scene as a number of bounding volumes in a hierarchical data structure. The method also includes generating a grid based on the hierarchical data structure. The method further includes mapping each node of the hierarchical data structure to at least one cell of the grid. The method additionally includes identifying a cell of the grid corresponding to an initial intersection location of a ray and the scene. The method still further includes determining a non-root node of the hierarchical data structure as a start node for traversing the hierarchical data structure based on the identified cell. The method also includes traversing the hierarchical data structure starting from the start node to identify a number a primitives intersected by the ray.