Faster Ray Tracing with SIMD Shaft Culling
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چکیده
This paper presents a generic technique for acceleration of ray tracing of polygonal scenes. We propose scheduling rays in a way that forms pyramidal shafts. We show that under certain conditions fulfilled by the corner rays of a shaft, it is possible to immediately and conservatively answer visibility queries for the inner rays without expensive ray traversal through acceleration data structures (kd-tree in our case). We show that the presented technique is suitable for primary, secondary, and shadow rays.
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تاریخ انتشار 2004