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GPU-based rendering of point-sampled water surfaces

Kei Iwasaki, Yoshinori Dobashi, Fujiichi Yoshimoto, Tomoyuki Nishita
Department of Computer and Communication Sciences, Wakayama University
The Visual Computer, Vol. 24, No. 2. (21 February 2008), pp. 77-84-84

@article{iwasaki2008gpu,

   title={GPU-based rendering of point-sampled water surfaces},

   author={Iwasaki, K. and Dobashi, Y. and Yoshimoto, F. and Nishita, T.},

   journal={The Visual Computer},

   volume={24},

   number={2},

   pages={77–84},

   issn={0178-2789},

   year={2008},

   publisher={Springer}

}

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Particle-based simulations are widely used to simulate fluids. We present a real-time rendering method for the results of particle-based simulations of water. Traditional approaches to visualize the results of particle-based simulations construct water surfaces that are usually represented by polygons. To construct water surfaces from the results of particle-based simulations, a density function is assigned to each particle and a density field is computed by accumulating the values of the density functions of all particles. However, the computation of the density field is time consuming. To address this problem, we propose an efficient calculation of density field using a graphics processing unit (GPU). We present a rendering method for water surfaces sampled by points. The use of the GPU permits efficient simulation of optical effects, such as refraction, reflection, and caustics.
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