【摘要】 针对三维游戏中室外场景渲染消耗内存大、效率低的问题,提出了一种基于四叉树剖分的LOD(层次细节)地形绘制算法,实现了地形多分辨率网格绘制。采用将共事顶点唯一存储的四叉树网格表示方法,并利用过程纹理合成技术实现地形的多纹理映射,模拟地表多种地貌混合的真实效果。实验结果验证了本文算法在内存占用、绘制速率和真实感上都优于Lindstrom算法。更多还原

【Abstract】 In order to solve the problem of high ram space cost and low efficiency in outdoor scenery rendering in 3D games, a LOD(Level of Detail) terrain rendering algorithm based on quad-tree was proposed and multi-resolution terrain mesh rendering was realized.A method of quad-tree grid was used which stored sharing vertexes exclusively.The technique of procedural texture synthesis was applied into multi-texture mapping to simulate the real terrain effect including various physiognomies.Experimental results proved that the algorithm is better than Lindstrom’s in space,efficiency and reality.更多还原