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DTSTAMP:20240214T070243Z
LOCATION:Meeting Room C4.11\, Level 4 (Convention Centre)
DTSTART;TZID=Australia/Melbourne:20231212T170000
DTEND;TZID=Australia/Melbourne:20231212T171000
UID:siggraphasia_SIGGRAPH Asia 2023_sess122_papers_495@linklings.com
SUMMARY:RMIP: Displacement ray tracing via inversion and oblong bounding
DESCRIPTION:Technical Communications, Technical Papers\n\nTheo Thonat, Ili
 yan Georgiev, François Beaune, and Tamy Boubekeur (Adobe)\n\nHigh-performa
 nce ray tracing of triangle meshes equipped with displacement maps is a ch
 allenging task. Existing methods either rely on pre-tessellation, taking f
 ull advantage of the hardware but with a poor memory quality tradeoff, or 
 use custom displacement-centric acceleration structures, preserving all th
 e geometric details, but being orders of magnitude slower. We introduce a 
 method that efficiently probes the displacement map space to find intersec
 tions without relying on pre-tessellation. Our method combines inverse dis
 placement mapping with on-the-fly surface bounds computation using a novel
  data structure that models tight bounds over anisotropic axis-aligned reg
 ions in the displacement map space. We demonstrate the effectiveness of ou
 r approach in a production GPU path tracer, providing from 2x to  an order
  of magnitude speed-up in render time compared to state of the art in the 
 most challenging real-time path tracing scenarios while maintaining a low 
 memory footprint.\n\nRegistration Category: Full Access\n\nSession Chair: 
 Bin Chen (Max-Planck-Institut für Informatik, D4: Computer Graphics)
URL:https://asia.siggraph.org/2023/full-program?id=papers_495&sess=sess122
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