Efficient High-Quality Volume Rendering of SPH Data

Roland Fraedrich, Stefan Auer, Rüdiger Westermann

Computer Graphics and Visualization Group,Technische Universität München, Germany


High quality volume rendering of SPH data requires a complex order-dependent resampling of particle quantities along the view rays. In this paper we present an efficient approach to perform this task using a novel view-space discretization of the simulation domain. Our method draws upon recent work on GPU-based particle voxelization for the efficient resampling of particles into uniform grids. We propose a new technique that leverages a perspective grid to adaptively discretize the view-volume, giving rise to a continuous level-of-detail sampling structure and reducing memory requirements compared to a uniform grid. In combination with a level-of-detail representation of the particle set, the perspective grid allows effectively reducing the amount of primitives to be processed at run-time. We demonstrate the quality and performance of our method for the rendering of fluid and gas dynamics SPH simulations consisting of many millions of particles.

Associated publications

Efficient High-Quality Volume Rendering of SPH Data
R. Fraedrich, S. Auer, R. Westermann, IEEE Transactions on Visualization and Computer Graphics 16(6):1533-1540, 2010(Proceedings of IEEE Visualization 2010[Bibtex] [PDF]

Additional Material

Presentation [3MB]