基于CUDA平台的海洋表面模拟

摘要

针对目前许多基于物理的流体模拟方法的缺点,如计算数据量大,实时性差等,提出了一种新的基于统一计算设备架构平台的实时海洋表面模拟方法.采取快速傅立叶变换与统计模型的方法获取海洋表面的高度场数据,充分利用CUDA编程模型的并行性加速建模过程,海洋表面真实感光照渲染主要通过对周围景物的反射投影与折射效果及近似菲涅尔系数进行模拟.实验结果表明,采用CUDA加速的模拟过程明显提高了效率,适合虚拟现实与游戏中的实时模拟.%For the shortcomings of many current physics-based methods about fluid simulation, such as, massive data for computation and difficulty for real-timing. A new method based on CUDA computing platform for the real-time simulation of ocean surface is presented. In order to obtain the data on height field of ocean surface, we take the fast Fourier transform method and the statistical model as the modeling technique and take full advantage of the parallelism with CUDA programming model to accelerate the model' s generation.The simulation of realistic lighting with sea surface is mainly through the method which combined reflection projection, refraction effect and approximate Fresnel coefficients. Experiments prove that the simulation using CUDA to accelerate the process of simulation significantly increased the efficiency, and is suitable for real-time simulation in virtual reality and game.