How to install the addon:

In blender go to Edit/Preferences/Addons

Install water_shader_addon_2.1.2.zip and save preferences.

After installing the addon you can find it in the N panel

For a detail guide on how to install and use the addon, check the following videos.

How to customize the material:

ASSET LIBRARY

To add the assets simply unzip the Asset Browser Assets.zip and add the folder to Preferences/File paths in blender, check the step-by-step tutorial 

TERRAIN GENERATORS

Please Note: the terrain generators use geometry nodes, so they will only work in Blender 4.3 and up

How to use the generators:

FOAM

To see the foam on the edge of the objects you will need to add those objects to the " Foam collection " that will be created when you add the "Water Cube", then make sure to select the water and go to modifiers and increase the Foam value in the geometry node modifier.

How to add foam: 

SCATTER ACUATIC PLANTS 

Scatter water lilies drawing lines on the surface, simply add the plants or flowers, in edit mode delete all vertices and select the "Draw Tool" then draw lines to distribute the plants.

CAUSTIC LIGHT

A spot light with caustics texture is included, simply click on "Caustic Light" 

you can adjust the light in the data panel

The strength can be adjusted

You can pick a color

The spot size can be changed

Blend will fade the edge to make it smooth

It's a seamples texture so you can scale it

It's animated, to see it simply play the animation.