中文摘要：

3D (三维) 进程模拟当前是关于碎片流动的研究的最挑战性的领域之一。大规模地面显示是最在碎片流动模拟的 3D 风景建设的基本任务。作为为碎片流动的主要扳机，降雨将实质地提高现实主义的感觉。在 3D 碎片流动模拟显示的地面和降雨为数字计算和图形的处理能力提出大挑战。在这篇论文，我们建议风景建模并且使变为集成认识到 3D 的 GPU 技术， LoD 算法，和粒子系统。为算法建模并且显示的即时基于 LoD 的地面首先被介绍，然后一个粒子基于系统的降雨风景显示方法被实现。试验性的结果证明与建议途径展览显示的 3D 风景鸣性能和公平视觉效果，它为碎片流动灾难的整个过程模拟打一个稳固的基础。

英文摘要：

3D （three-dimensional） process simulation is currently one of the most challenging fields of research on debris flow. Large scale terrain rendering is the most basic task of 3D scenery construction in debris flow simulation. As the major trigger for debris flow, rainfall will substantially enhance the realistic sense. Terrain and rainfall rendering in 3D debris flow simulations poses great challenges for numerical computation and graphical processing capability. In this paper, we propose to integrate GPU technology, LoD algorithms, and particle systems to realize 3D scenery modeling and rendering. The real-time LoD-based terrain modeling and rendering algorithm is presented first, and then a particle system-based rainfall scenery rendering method is implemented. Experimental results demonstrate that the 3D scenery rendered with the proposed approach exhibits sound performance and fair visual effects, which lays a solid foundation for the whole process simulation of debris flow disasters.