Intersection testing in a ray tracing system using ray bundle vectors

A ray tracing system comprising:

• a tester module configured to receive a bundle of rays to be tested for intersection with a box, wherein the tester module comprises:
• a set of one or more testing blocks configured to perform intersection testing on the received bundle of rays with respect to the box by:
• identifying silhouette edges of the box from the perspective of the bundle of rays;
• for each of the identified silhouette edges:
• obtaining components of a vector providing a bound to the bundle of rays;
• and
• determining whether the vector passes inside or outside of the silhouette edge;
• and
• using results of determining, for each of the identified silhouette edges, whether the vector passes inside or outside of the silhouette edge, to determine an intersection testing result for the bundle of rays with respect to the box.

A non-transitory computer readable storage medium having stored thereon an integrated circuit definition dataset that, when processed in an integrated circuit manufacturing system, configures the integrated circuit manufacturing system to manufacture a ray tracing system which comprises:

• a tester module configured to receive a bundle of rays to be tested for intersection with a box, wherein the tester module comprises:
• a set of one or more testing blocks configured to perform intersection testing on the received bundle of rays with respect to the box by:
• identifying silhouette edges of the box from the perspective of the bundle of rays;
• for each of the identified silhouette edges:
• obtaining components of a vector providing a bound to the bundle of rays, and
• determining whether the vector passes inside or outside of the silhouette edge;
• and
• using results of determining, for each of the identified silhouette edges, whether the vector passes inside or outside of the silhouette edge, to determine an intersection testing result for the bundle of rays with respect to the box.