公开(公告)号：US20240169655A1

公开(公告)日：2024-05-23

申请号：US18420449

申请日：2024-01-23

Applicant: NVIDIA Corporation

Inventor： Greg MUTHLER ,  Ronald Charles BABICH, JR. ,  William Parsons NEWHALL, Jr. ,  Peter NELSON ,  James ROBERTSON ,  John BURGESS

IPC: G06T15/06 ,  G06F9/38 ,  G06N5/046 ,  G06T1/20 ,  G06T1/60 ,  G06T17/00

CPC classification number: G06T15/06 ,  G06F9/3877 ,  G06N5/046 ,  G06T1/20 ,  G06T1/60 ,  G06T17/005

Abstract: In a ray tracer, to prevent any long-running query from hanging the graphics processing unit, a traversal coprocessor provides a preemption mechanism that will allow rays to stop processing or time out early. The example non-limiting implementations described herein provide such a preemption mechanism, including a forward progress guarantee, and additional programmable timeout options that can be time or cycle based. Those programmable options provide a means for quality of service timing guarantees for applications such as virtual reality (VR) that have strict timing requirements.

公开(公告)号：US20240355039A1

公开(公告)日：2024-10-24

申请号：US18761820

申请日：2024-07-02

Applicant: NVIDIA Corporation

Inventor： Samuli LAINE ,  Tero KARRAS ,  Timo AILA ,  Robert OHANNESSIAN ,  William Parsons NEWHALL, Jr. ,  Greg MUTHLER ,  Ian KWONG ,  Peter NELSON ,  John BURGESS

IPC: G06T15/06 ,  G06T15/00

CPC classification number: G06T15/06 ,  G06T15/005

Abstract: A hardware-based traversal coprocessor provides acceleration of tree traversal operations searching for intersections between primitives represented in a tree data structure and a ray. The primitives may include triangles used in generating a virtual scene. The hardware-based traversal coprocessor is configured to properly handle numerically challenging computations at or near edges and/or vertices of primitives and/or ensure that a single intersection is reported when a ray intersects a surface formed by primitives at or near edges and/or vertices of the primitives.