Fast rendering of dynamic clouds

Authors:
Horng-Shyang Liao;Tan-Chi Ho;Jung-Hong Chuang;Cheng-Chung Lin
Affiliations:
National Center for High-Performance Computing, Taiwan, ROC and Department of Computer Science and Information Engineering, National Chiao Tung University, 1001 Ta Hsueh Road, Hsinchu 30050, Taiwa ...;Department of Computer Science and Information Engineering, National Chiao Tung University, 1001 Ta Hsueh Road, Hsinchu 30050, Taiwan, ROC;Department of Computer Science and Information Engineering, National Chiao Tung University, 1001 Ta Hsueh Road, Hsinchu 30050, Taiwan, ROC;Department of Computer Science and Information Engineering, National Chiao Tung University, 1001 Ta Hsueh Road, Hsinchu 30050, Taiwan, ROC
Venue:
Computers and Graphics
Year:
2005

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Abstract

We propose an efficient framework for dynamic cloud rendering. Based on the proposed simplified lighting model, the shadow relation table and metaball lighting texture database are constructed in the preprocessing, and features such as self-shadowing and light scattering can be computed quickly using table lookup at the run time. Clouds are rendered using textured billboards and alpha blending, which is further speeded up by incorporating the octree hierarchy and the hierarchical texture caching.