基于Geometry Clipmap算法的大规模地形可视化研究

摘要

大规模地形可视化一直是实时计算机图形学的研究瓶颈,归因于地形数据的海量性与实时计算机图形学的实时性之间的矛盾.基于Geometry Clipmap算法提出一个扩展的大规模地形实时渲染的解决方案,在高效地利用现代图形学硬件的同时,有效地减少批次渲染的三角形面片数量.在使用合适的数据调度算法之后,使无限大小地形的实时漫游成为可能.%Large scale terrain visualisation has been the bottleneck of real-time computer graphics due to the contradiction between massive nature of terrain data and real-time of computer graphics. An expended algorithm based on Geometry Clipmap is proposed in the paper as the solution of large-scale terrain rendering, it effectively reduces the number of triangular palch rendering in batch while efficiently makes use of modern graphics hardware. The use of appropriate dala scheduling algorithm makes it possible to timely perform roaming on terrain wilh unlimited size.