In Star Wars a classic fight scene takes place on the planet Kamino in a rain storm. We reproduced this environment in game.
I developed the wet weather effects.
Realtime reflection rendering tech
Environment, Characters and VFX reflected in the ground surface
Animated water patterns in the reflection surface
Rain and lightning
Rolling ocean
A planar reflection of the scene is generated each frame into a render target. This target texture is then post processed, streaking the image and adding blur back into the texture's mipmap chain.
The mipmap images are then sampled by the Terrain shader, and combined to create the effect of sharper reflections near the ground surface, and scattered reflections as the distance from the surface increases. Objects that are further from the ground surface appear more scattered in the reflection.
iVZBOwsrwt.mp4Expanding concentric rings mapped over terrain surface give impression of water droplets hitting the surface.
Rings generated by moving a ramp through a texture of circular gradients.
