基于可编程GPU的三维地形场景中树的渲染优化技术  

The Rendering Optimization of Trees in 3D Terrain Scene Based on Programmable GPU

作　　者：韦婷[1] 黎展荣[1] 侯能[1] 孔令麒[1] 

机构地区：[1]广西大学计算机与电子信息学院,南宁530004

出　　处：《科学技术与工程》2012年第26期6834-6838,6843,共6页Science Technology and Engineering

基　　金：南宁市科学研究与技术发展项目(201002010)资助

摘　　要：充分利用当前高性能可编程图形硬件特性及OpenGL 4的最新性能,结合LOD加速技术,采用多遍绘制技术,以及图像遮挡剔除技术来进行树实例的可见性剔除可以优化三维地形场景的渲染。实验主要是对地形场景中树的渲染进行优化,数据结果表明这些优化方法在保证地形场景真实性的同时,减少了场景的几何复杂度,提高了帧刷新率。Make full use of the current high-performance programmable graphics hardware features and OpenGL 4g latest performance, combined with LOD accelerating technology, using multipass rendering techniques for in- stance culling and image occlusion culling technology the rendering of three-dimensional terrain can be optimized. The experiment is mainly aimed at the terrain scene tree-rendering optimization. Data results show that the optimi- zation method in guarantee the authenticity of the terrain scene at the same time could reduce the complexity of the geometry of the scene. The frame refresh rate is improved.

关 键 词：可编程GPU LOD 多遍绘制 实例化 可见性剔除 图像遮挡剔除 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]