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DTSTAMP:20240214T070248Z
LOCATION:Meeting Room C4.8\, Level 4 (Convention Centre)
DTSTART;TZID=Australia/Melbourne:20231215T095000
DTEND;TZID=Australia/Melbourne:20231215T100000
UID:siggraphasia_SIGGRAPH Asia 2023_sess155_papers_575@linklings.com
SUMMARY:Nonlinear Ray Tracing for Displacement and Shell Mapping
DESCRIPTION:Technical Papers\n\nShinji Ogaki (ZOZO, Inc.)\n\nDisplacement 
 mapping and shell mapping add fine-scale geometric features to meshes and 
 can significantly enhance the realism of an object's surface representatio
 n. Both methods generate geometry within a layer between a base mesh and i
 ts offset mesh called a shell. It is not easy to simultaneously achieve hi
 gh ray tracing performance, low memory consumption, interactive feedback, 
 and ease of implementation, partly because the mapping between shell and t
 exture space is nonlinear. This paper introduces a new efficient approach 
 to perform acceleration structure traversal and intersection tests against
  micro-triangles entirely in texture space by formulating nonlinear rays a
 s degree-2 rational functions. Our method simplifies the implementation of
  tessellation-free displacement mapping and smooth shell mapping and works
  even if base mesh triangles degenerate in UV space.\n\nRegistration Categ
 ory: Full Access\n\nSession Chair: Sing Chun Lee (Bucknell University)
URL:https://asia.siggraph.org/2023/full-program?id=papers_575&sess=sess155
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