BVH for efficient raytracing of dynamic metaballs on GPU
In: SIGGRAPH SIGGRAPH, ACM SIGGRAPH, Aug 2009, New Orleans, United States. pp.51, ⟨10.1145/1597990.1598041⟩ SIGGRAPH Talks; (2009-08-03)
Online
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Zugriff:
International audience; Metaballs [Bloomenthal 1997] are effective to represent fluids and similar complex and deformable geometries, but their implicit nature makes difficult their visualization in real time. A common strategy is to tessellate the resulting isosurface and to render it on GPU, but it scales poorly as the number of metaballs increases. Kanamori et al. [2008] efficiently raycast thousands of metaballs without intermediate representations. Their method assumes that rays are shot from a single viewpoint, thus preventing secondary effects (no shadows, reflections, etc.), and is limited to polynomial density functions. We propose to exploit the culling capacity of dynamic bounding volume hierarchies (BVH) [Wald 2007], the secant method for ray-surface intersection, and CPU-GPU parallelism to alleviate the restrictions of their method. This results in a general raytracing method, allowing arbitrary ray intersection (visibility, shadow, reflection, refraction, etc.) with metaballs of any finite-support at interactive performances.
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BVH for efficient raytracing of dynamic metaballs on GPU
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Autor/in / Beteiligte Person: | Gourmel, Olivier ; Paulin, Mathias ; Pajot, Anthony ; Barthe, Loïc ; Poulin, Pierre ; Institut de recherche en informatique de Toulouse (IRIT) ; Université Toulouse 1 Capitole (UT1) ; Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Université Toulouse - Jean Jaurès (UT2J)-Université Toulouse III - Paul Sabatier (UT3) ; Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP) ; Université Fédérale Toulouse Midi-Pyrénées ; Visual Objects from Reality To Expression (IRIT-VORTEX) ; Université Fédérale Toulouse Midi-Pyrénées-Université Toulouse 1 Capitole (UT1) ; Département d'Informatique et de Recherche Opérationnelle [Montreal] (DIRO) ; Université de Montréal (UdeM) ; ACM, SIGGRAPH |
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Quelle: | SIGGRAPH SIGGRAPH, ACM SIGGRAPH, Aug 2009, New Orleans, United States. pp.51, ⟨10.1145/1597990.1598041⟩ SIGGRAPH Talks; (2009-08-03) |
Veröffentlichung: | HAL CCSD, 2009 |
Medientyp: | unknown |
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