Research On Large Particle System In Virtual Reality

The application of Particle System Simulation irregular fuzzy objects has been widely applied in the field of computer Virtual Simulation. While the increasing requirements of the game, Particle System has become the key technology. But for the particle which has different distance from viewpoint, traditional Particle System in the entire scene using a single particle equation of motion to control particles` movement, which increases the calculation and impact the rendering speed. So the development of a more flexible controlling the movement of the particle method, is for improving the rendering speed and virtual reality in terms of positive significance.Through the research of Particle System, the AM model, which is applied to Particle System, used to solve the problem of redundant computation which is produced by single equation of motion in the whole scene. It also can bring a great simulation result. We work about the following aspects:First, by bringing the AM model in Particle System, and designing the level of particles, we solve the problem of redundant computation which is produced by single equation of motion in the whole scence.Second, We design a kind of double buffer in GPU, so that we can improve the using of system resources. We also use a technology named BillBoarding to improve rendering efficiency of Particle System.We use Visual C++, OpenGL and Direct3D to complete the experiment in Windows XP. By rendering rain and snow, the experiment proves that this method can improve the rendering efficiency and the reality of Particle System.