Efficient High-Quality Volume Rendering of SPH Data

Roland Fraedrich, Stefan Auer, Rudiger Westermann
Comput. Graphics & Visualization Group, Tech. Univ. at Munchen, Munchen, Germany
IEEE Transactions on Visualization and Computer Graphics, 2010


   title={Efficient High-Quality Volume Rendering of SPH Data},

   author={Fraedrich, R. and Auer, S. and Westermann, R.},

   journal={Visualization and Computer Graphics, IEEE Transactions on},







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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.
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