Setup Guide

Setup Guide

This guide covers the basic setup process for URP Underwater Effects.

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Requirements

• Unity 6
• Universal Render Pipeline (URP)

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Installation

Install the package using one of the following methods:

Stable Version

Download the latest release from GitHub.

Recommended for production projects.

Source Version

Clone the repository directly.

Recommended if you want the newest features or plan to contribute.

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Renderer Setup

Open the URP Renderer Asset used by your project.

Add:

Underwater Effects

as a Renderer Feature.

Only a single renderer feature is required.

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Volume Setup

Create a Global Volume or Local Volume.

Add the underwater effects you want to use.

Examples:

Underwater Fog
Underwater Caustics
Underwater Refraction
Underwater Sun Shafts

All effect configuration is performed through the Volume system.

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Water Line Setup

The Water Line effect is responsible for determining which pixels are underwater.

Assign the layer containing your water surface geometry.

This layer is used to build the water line mask shared by the framework.

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Transparent Depth Setup

Transparent objects can participate in underwater fog.

Add:

TransparentDepthSettings

to any renderer that should contribute to the transparent depth system.

Available settings:

Thickness
Opacity

Examples:

• Glass
• Observation Domes
• Force Fields
• Portals
• Shields

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Verifying The Setup

A basic setup should contain:

URP Renderer
    └─ Underwater Effects Renderer Feature

Volume
    └─ Underwater Effect Overrides

Water Surface
    └─ Water Layer

If everything is configured correctly:

• The water line should appear at the water surface.
• Fog should render underwater.
• Caustics should be visible underwater.
• Refraction should appear below the water line.

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Next Step

Once the system is running, see: Custom Underwater Effects Tutorial

for information about creating your own underwater rendering effects.