基于GPU的大规模地形场景实时渲染  

Real-time Rendering Large Scale Landscapes Base on GPU

作　　者：程甜甜[1] 陈阁[1] 陈新[1] 李云飞[1] 

机构地区：[1]苏州大学计算机科学与技术学院,江苏苏州215006

出　　处：《苏州大学学报（工科版）》2008年第3期1-5,共5页Journal of Soochow University Engineering Science Edition (Bimonthly)

基　　金：国家自然科学基金资助项目(编号60775045);江苏省自然科学基金资助项目(编号BK2005027)

摘　　要：结合GPU(Graphic Processing Unit)的特点,以GeoMipMapping算法为基础,提出了一种充分发挥GPU性能的Patch-LOD地形绘制模型:层次索引模板。层次索引模板通过一组常驻显存的索引缓存序列,隐式地表示地形块细节层次。另外以层次索引模板为基础,在GPU上实现了裂缝消除。通过衔接索引模板扩充层次索引模板,隐式消除了不同分辨率地形块拼接时产生的裂缝。A Patch-LOD landscapes＇ rendering algorithm is introduced this thesis, which takes full use of GPU based on GeoMipMapping method：HIT（ Hierarchical Index Templet）. It represents terrain blocks＇ detail levels by using an index buffer sequence, which resides in video memeory. In addition, based on the HIT algorithm the thesis solves the cracking problem on GPU. The crack between adjacent terrain blocks with different resolution is eliminated by extending the HIT with joint index templet.

关 键 词：层次索引模板 索引缓存序列 衔接索引模板 

分 类 号：TP311[自动化与计算机技术—计算机软件与理论]