Preview: /watch?v=k5-aFcc3TLQ

Update 1.1 (UE 4.26 and higher):

Global opacity parameter

Hide / Show events for smooth fade off / fafe on FX transition.

Visual effect for simulate rain droplets, rolling leaks and wet layer. Useful for games or scenes with rain weather. Easy to customize and using.

Features:

Moveable droplets
Rolling leaks
Static droplets
Wet layer

Adjustable parameters:

- Global opacity

- Render texture size

- Moveable droplets count and intensity

- Rolling leaks count and intensity

- Static droplets intensity and tiling

- Wet layer intensity and speed

Technical Details

1) Add PostProcess volume to a level
2) Place BP_RainDropsRender to a level at some place where player cant see
3) Specify your post process volume in BP_RainDropsRender setting "Post Process volume"

Number of Materials: 4
Do Materials derive from a Master Material with instances as variation: Yes
Number of Textures: 3
Number of Particle Systems: 2
Number of Meshes: 3
Texture Resolution: 2 x 512x512, 1 x 1024x1024