Real-time rendering of raining animation based on the graphics hardware acceleration

We present an efficient method for simulation of raining phenomenon in real time by taking advantage of the parallelism and programmability of GPU (graphic processing unit). Our implementation of the method is based on particle systems and collision detection. Splashing of raindrop is simulated using a series of stylized textures and rotations of point sprites. Taking into account human perception in raining phenomenon of real world, the effects such as light influence, depth of field, motion blur, have been applied. The test results show that our method is efficient and is feasible to solve the problem of 3D raining simulation in real time for more general environment with complex geometry.