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Sorted Deferred Shading For Production Path Tracing

Sorted Deferred Shading for Production Path Tracing

EGSR 2013

Christian Eisenacher, Gregory Nichols, Andrew Selle, Brent Burley

Ray-traced global illumination is becoming widespread. However, incoherent ray traversal and shading has traditionally limited ray tracing to scenes that fit in memory. To combat these issues, we introduce a sorting strategy for large, potentially out-of-core ray batches, and we sort and defer shading of ray hits. As a result, we achieve perfectly coherent shading and texture access, removing the need for a shading cache.

Shading Rendering