一种面向现代GPU的大规模地形渲染技术  

GPU friendly realtime rendering method for large-area terrain data

作　　者：石雄[1] 朱毅[1] 

机构地区：[1]成都信息工程学院计算机学院,四川成都610225

出　　处：《成都信息工程学院学报》2009年第3期230-235,共6页Journal of Chengdu University of Information Technology

摘　　要：将地形数据均匀地划分为分页,通过基于视点的预加载方法和分页缓冲池管理技术实现海量地形数据的实时调度。沿用LOD算法基本思想,将已加载的分页再划分为若干个分块,以分块为单位进行批量渲染,并把不同细节等级分块之间的裂缝处理提前至预处理阶段进行,减少CPU的实时运算量。实验表明,该算法能使CPU与GPU之间更协调的工作,实现了大规模三维地形的高效渲染。The total terrain data is partitioned into many smaller pages evenly and uses a preloading method based on the view point and a technology for managing page cache pool to achieve the realtime loading for large-area terrain data. According to the idea of LOD algorithm each page is partitioned into many tiles again, a tile as a basic unit for the batch rending is processing the cracking between different level of tile on the preparing period and reducing the realtime operation on CPU. The experiment shows that the algorithm makes the CPU and GPU work more harmonious and realizes the efficient rendering of the large-area terrain data.

关 键 词：地形渲染 分页调度 层次细节 GPU 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]