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AssigneeImagination Technologies Limited
InventorsGregory Clark, John W. Howson, Justin DeCell, Steven J. Clohset
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Methods and ray tracing units are provided for performing intersection testing for use in rendering an image of a 3-D scene. A hierarchical acceleration structure may be traversed by traversing one or more upper levels of nodes of the hierarchical acceleration structure according to a first traversal technique, the first traversal technique being a depth-first traversal technique; and traversing one or more lower levels of nodes of the hierarchical acceleration structure according to a second traversal technique, the second traversal technique not being a depth-first traversal technique. Results of traversing the hierarchical acceleration structure are used for rendering the image of the 3-D scene. The upper levels of the acceleration structure may be defined according to a spatial subdivision structure, whereas the lower levels of the acceleration structure may be defined according to a bounding volume structure.
A computer-implemented method of rendering an image of a scene using a ray tracing system, the method comprising:
A ray tracing unit comprising a processing module configured to render an image of a scene, the processing module comprising:
A non-transitory computer readable storage medium having stored thereon computer readable code which, when executed, causes at least one processor to:
Dependencies are inferred from the claim text.