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EUROGRAPHICS
2010
Eurographics

Fitted BVH for Fast Raytracing of Metaballs

14 years 21 days ago
Fitted BVH for Fast Raytracing of Metaballs
Raytracing metaballs is a problem that has numerous applications in the rendering of dynamic soft objects such as fluids. However, current techniques are either limited in the visual effects that they can render or their performance drops as the number of metaballs and their density increase. We present a new acceleration structure based on BVH and kd-tree for efficient raytracing of a large number of metaballs. This structure is built from an adapted SAH using a fast greedy algorithm and allows the visualization of several hundreds of thousands metaballs at interactive-to-real-time framerates. Our method can handle arbitrary rays to simulate any complex secondary effects such as reflections or soft shadows, and is robust with respect to the density of metaballs. We achieve this performance thanks to a balanced CPU-GPU (using CUDA) implementation of the animation, structure creation, and rendering. Categories and Subject Descriptors (according to ACM CCS): I.3.7 [Computer Graphics]...
Olivier Gourmel, Anthony Pajot, Mathias Paulin, Lo
Added 11 Mar 2010
Updated 15 Mar 2010
Type Conference
Year 2010
Where EUROGRAPHICS
Authors Olivier Gourmel, Anthony Pajot, Mathias Paulin, Loïc Barthe, Pierre Poulin
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