Скачать или смотреть Demo of C++, OpenGL-implemented Fog and Snow effects

This is just a part of a larger project made by me and several other students. The reason only this part is shown is because these weather effects were my responsibilities.

There are three types of fog implemented - linear, exponential and exponential squared. The density of the fog is adjustable. All fog types are homogeneous.

The snow is implemented using a noise texture. The texture is uploaded to the vertex shader and particles are instantiated using the texture. The number of particles depends on the resolution of the texture. In the above example, 1024*1024 = 1048576 particles are used. The size, falling distance, falling speed and positions of the particle system is adjustable. Note that in the above example, there is little blending used and just a plane white texture is used for the particles.