Geometry Clipmap算法与Texture Clipmap算法思想类似，是由斯坦福的Frank Losasso和Microsoft Research的Hugues Hoppe提出的一种新的专用于大地形绘制的LOD控制方法。-Geometry Clipmap algorithm and Texture Clipmap thinking of a similar algorithm, is Stanford' s Frank Losasso and Hugues Hoppe Micr