Adaptive Shadow Testing for Ray Tracing
Title | Adaptive Shadow Testing for Ray Tracing |
Publication Type | Conference Paper |
Year of Publication | 1991 |
Authors | Gregory J Ward |
Conference Name | 1991 European Rendering Workshop Conference |
Call Number | LBL-30647 |
Abstract | We present a simple technique for improving the efficiency of ray tracing in scenes with a large number of light sources. The sources are sorted according to their potential contribution, and only those sources whose shadows are above a specified threshold are tested. The remainder are added into the result in proportion to a statistical estimate of their visibility. The algorithm requires very little storage, and produces no objectionable artifacts. |
LBNL Report Number | LBL-30647 |
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