Water Caustics Effect for URP

Overview

✔ Optimized for URP

✔ Drop-in ready — no extra setup or scripting required

✔ Lightweight and highly customizable

Instant Caustics Projection — Simple, Powerful, Beautiful

Bring your environments to life with dynamic, animated caustics — with no need for render features, scripts, or special asset setup.

Simply assign the shader to a cube and go! Works out of the box with default URP settings (depth and opaque textures enabled).

Perfect for underwater scenes, pools, beaches, and stylized worlds.

Key Features

• Adjustable caustic edge fading, circular or boxy blending

• World-space triplanar caustics projection

• Dynamic animation with adjustable speed and scale

• Chromatic aberration effect for added realism

• Light and shadow interaction (main directional light only)

• Depth-based and surface normal masking

• Lightweight and efficient

• Full source code included

Package Contents

• MM/Caustics Shader

• MM/WaterUnlit Shader

• 9 Textures (2048x2048 resolution, PNG and TGA formats, including 4 noise textures)

• 9 Meshes

• 3 Example Scenes

• Fully editable source files

Bonus Content

Included in the package:

• Stylized Unlit Water Shader