US 2026/0065572 A1Published application

Graphics processing

AssigneeArm Limited

InventorsYoav Asher LEVY, Tal TZABARI, Anna KOBRINSKI

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Abstract

The present disclosure relates to a graphics processor and a method of operating a graphics processing system for rendering a frame that represents a view of a scene comprising one or more objects using a ray tracing process. A traversal of a ray tracing acceleration data structure indicative of the distribution of geometry for the scene being rendered is performed to determine a first end node associated with a first internal node that will be intersected by a ray and requests data associated with the first end node from the local memory as well as requesting a prefetch of data associated with a second node of the plurality of nodes to be stored in the local memory, and determines, by testing the ray for intersection with the first end node, if the first end node is intersected by the ray.

Claims18

Dependent claims

A method of operating a graphics processing system when rendering a frame that represents a view of a scene comprising one or more objects using a ray tracing process, the graphics processing system comprising:

a graphics processor comprising a programmable execution unit;
and a local memory, the method comprising:
executing, by the programmable execution unit of the graphics processor, a program to render a frame that represents a view of a scene comprising one or more objects using the ray tracing process;
performing a traversal of a ray tracing acceleration data structure indicative of the distribution of geometry for the scene being rendered, the ray tracing acceleration data structure comprising a plurality of nodes, each node associated with a respective one or more volumes within the scene, the plurality of nodes comprising a plurality of internal nodes and a plurality of end nodes that may be intersected by a ray, wherein one or more internal nodes are associated with at least one end node, to determine, by testing the ray for intersection with the volumes represented by the nodes of the acceleration data structure, a first internal node of the plurality of nodes that will be intersected by a ray;
determining a first end node associated with the first internal node that will be intersected by a ray;
requesting data associated with the first end node from the local memory;
requesting a prefetch of data associated with a second node of the plurality of nodes to be stored in the local memory;
and
determining, by testing the ray for intersection with the first end node, if the first end node is intersected by the ray.

6 more elements

A graphics processor operable to render a frame representing a view of a scene using a ray tracing process, the graphics processor comprising:

a programmable execution unit operable to execute graphics processing programs to perform graphics processing operations;
and a local memory;
wherein:
the programmable execution unit is operable, when the programmable execution unit is executing a program to perform a ray tracing operation that uses a ray tracing acceleration data structure indicative of the distribution of geometry for a scene to be rendered, the ray tracing acceleration data structure comprising a plurality of nodes, each node associated with a respective one or more volumes within the scene, the plurality of nodes comprising a plurality of internal nodes and a plurality of end nodes that may be intersected by a ray, wherein one or more internal nodes are associated with at least one end node, to:
perform a traversal of the ray tracing acceleration data structure to determine, by testing the ray for intersection with the volumes represented by the nodes of the acceleration data structure, a first internal node of the plurality of nodes that will be intersected by a ray;
determine a first end node associated with the first internal node that will be intersected by a ray;
request data associated with the first end node from the local memory;
request a prefetch of data associated with a second node of the plurality of nodes to be stored in the local memory;
and
determine, by testing the ray for intersection with the first end node, if the first end node is intersected by the ray.

7 more elements

Dependencies are inferred from the claim text.