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DOE OSTI · 1082726

Ray tracing a three dimensional scene using a grid

Wald, Ingo·Ize, Santiago·Parker, Steven G·Knoll, Aaron
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Abstract

Ray tracing a three-dimensional scene using a grid. One example embodiment is a method for ray tracing a three-dimensional scene using a grid. In this example method, the three-dimensional scene is made up of objects that are spatially partitioned into a plurality of cells that make up the grid. The method includes a first act of computing a bounding frustum of a packet of rays, and a second act of traversing the grid slice by slice along a major traversal axis. Each slice traversal includes a first act of determining one or more cells in the slice that are overlapped by the frustum and a second act of testing the rays in the packet for intersection with any objects at least partially bounded by the one or more cells overlapped by the frustum.

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Wald, Ingo, Ize, Santiago, Parker, Steven G, Knoll, Aaron. 2013-02-26. Ray tracing a three dimensional scene using a grid. https://www.osti.gov/biblio/1082726

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