UberFlow: a GPU-based particle engine

Peter Kipfer, Mark Segal, Rudiger Westermann
Computer Graphics & Visualization, Technische Universitat Munchen
In HWWS ’04: Proceedings of the ACM SIGGRAPH/EUROGRAPHICS conference on Graphics hardware (2004), pp. 115-122


   title={Uberflow: A GPU-based particle engine},

   author={Kipfer, P. and Segal, M. and Westermann, R.},

   booktitle={Proceedings of the ACM SIGGRAPH/EUROGRAPHICS conference on Graphics hardware},






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We present a system for real-time animation and rendering of large particle sets using GPU computation and memory objects in OpenGL. Memory objects can be used both as containers for geometry data stored on the graphics card and as render targets, providing an effective means for the manipulation and rendering of particle data on the GPU.To fully take advantage of this mechanism, efficient GPU realizations of algorithms used to perform particle manipulation are essential. Our system implements a versatile particle engine, including inter-particle collisions and visibility sorting. By combining memory objects with floating-point fragment programs, we have implemented a particle engine that entirely avoids the transfer of particle data at run-time. Our system can be seen as a forerunner of a new class of graphics algorithms, exploiting memory objects or similar concepts on upcoming graphics hardware to avoid bus bandwidth becoming the major performance bottleneck.
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