Animated Rain/Waterdrop Material

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This material set is used for rain flow effect on surfaces like glass windows or solid surfaces.

  • Supported Platforms
  • Supported Engine Versions
    4.17-4.20

Description


Material tweak video:

https://www.youtube.com/watch?v=V4cvskmZ5Gc

Unreal Engine - Rain Material Implementation Tutorial

https://www.youtube.com/watch?v=TxjYz9l3WX8

Rain Material on Unreal Engine Interface

https://www.youtube.com/watch?v=K2_0RWK-7fE

Rain Material on Unreal Engine Interface 2

https://www.youtube.com/watch?v=tWy7ulHT6wo


Material has 2 types of usage:

1. For vertical surfaces that let the rain flow down (Rain_flow_material)

2. For horizontal surfaces that rain fall on them (Ground_rain_normal_overlay)

Technical Details


Installation: Copy the archive content to your unreal project content folder.

Follow the steps on this video: https://www.youtube.com/watch?v=TxjYz9l3WX8

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.

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