设计了一种基于GPU编程实现的大规模地形场景的实时绘制与漫游算法。利用GPU端完成地形网格更新、地形块的自动选取、高度图和纹理图采样等大部分计算工作，大大减轻了CPU端的计算负载。-designed a high performance technique for real-time rendering and roaming of large-scale terrain environment based on GPU programming. GPU undertaked most of t