公开(公告)号：US12106423B2

公开(公告)日：2024-10-01

申请号：US17946201

申请日：2022-09-16

Applicant: NVIDIA Corporation

Inventor： Gregory Muthler ,  John Burgess ,  Magnus Andersson ,  Ian Kwong ,  Edward Biddulph

IPC: G06T15/06 ,  G06T15/00 ,  G06T15/30

CPC classification number: G06T15/06 ,  G06T15/005 ,  G06T15/30 ,  G06T2210/12 ,  G06T2210/21

Abstract: Techniques applicable to a ray tracing hardware accelerator for traversing a hierarchical acceleration structure with reduced false positive ray intersections are disclosed. The reduction of false positives may be based upon one or more of selectively performing a secondary higher precision intersection test for a bounding volume, identifying and culling bounding volumes that degenerate to a point, and parametrically clipping rays that exceed certain configured distance thresholds.

公开(公告)号：US12198252B2

公开(公告)日：2025-01-14

申请号：US17946193

申请日：2022-09-16

Applicant: NVIDIA Corporation

Inventor： Gregory Muthler ,  John Burgess ,  Magnus Andersson ,  Ian Kwong ,  Edward Biddulph

IPC: G06T15/06 ,  G06T15/00 ,  G06T15/40

Abstract: Techniques applicable to a ray tracing hardware accelerator for traversing a hierarchical acceleration structure with reduced false positive ray intersections are disclosed. The reduction of false positives may be based upon one or more of selectively performing a secondary higher precision intersection test for a bounding volume, identifying and culling bounding volumes that degenerate to a point, and parametrically clipping rays that exceed certain configured distance thresholds.

公开(公告)号：US12198251B2

公开(公告)日：2025-01-14

申请号：US17946093

申请日：2022-09-16

Applicant: NVIDIA Corporation

Inventor： Gregory Muthler ,  John Burgess ,  Magnus Andersson ,  Ian Kwong ,  Edward Biddulph

IPC: G06T15/06 ,  G06T15/00

Abstract: Techniques applicable to a ray tracing hardware accelerator for traversing a hierarchical acceleration structure with reduced false positive ray intersections are disclosed. The reduction of false positives may be based upon one or more of selectively performing a secondary higher precision intersection test for a bounding volume, identifying and culling bounding volumes that degenerate to a point, and parametrically clipping rays that exceed certain configured distance thresholds.