Unreal Engine – Animated Rain Waterdrop Material FX UE5185

Technical Details
Warning: Because of a bug stated here, material overlay volume doesnt work right on 4.22 and 4.23. That bug fixed on 4.24.2.

General flow speed: Set 0 to stop all flowing.

Mask general flow speed: If general flow speed is not 0, this will set the general speed of vertical flow piles.

Bottom layer flow speed: Set 0 to stop 1/3 of drops.

Bottom mask flow speed: This will set the partial speed of vertical flow piles on bottom layer. Set it 0 to hide 1/3 of vertical flows.

Middle layer flow speed: Set 0 to stop 1/3 of drops.

Middle mask flow speed: This will set the partial speed of vertical flow piles on middle layer. Set it 0 to hide 1/3 of vertical flows.

Top layer flow speed: Set 0 to stop 1/3 of drops.

Top mask flow speed: This will set the partial speed of vertical flow piles on top layer. Set it 0 to hide 1/3 of vertical flows.

IOR: Index of refraction value

Opacity-control: Material opacity value

Specular amount: Material specular value

Static speed: This value will set the flow speed of tiny drops between static drops.

Static drop on?: Set it to 1 for horizontal surfaces that has no flow. (General flow speed must also set to 0)

Static drop speed: This is the refresh rate of changing positions of the drops which looks like rain fall on surface.

UV multiplier: Tile multiplier of the general Material.