2025/02/04 by Rama Carl Hoetzlein, Rama Hoetzlein, Hoetzlein, Rama Carl · 1 voice
Computer Science · Engineering · #3D Shape Modeling and Analysis #Augmented Reality Applications #Computer Graphics and Visualization Techniques #cs.GR
paper · pdf · doi:10.48550/arxiv.2502.02011
openalex publication_date 2025/02/04 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Displacement mapping is an important tool for modeling detailed geometric features. We explore the problem of authoring complex surfaces while ray tracing interactively. Current techniques for ray tracing displaced surfaces rely on acceleration structures that require dynamic rebuilding when edited. These techniques are typically used for massive static scenes or the compression of detailed source assets. Our interest lies in modeling and look development of artistic features with real-time ray tracing. We demonstrate projective displacement mapping, a direct sampling method without a bottom-level acceleration structure combined with a top-level hardware BVH. Quality and performance are improved over existing methods with smoothed displaced normals, thin feature sampling, tight prism bounds and ray-bilinear patch intersections. Our method is faster than comparable approaches for ray tracing, enabling real-time surface editing.