Underwater Caustics - Advanced Materials

Uploaded February 2024 | Updated September 2026, 2 weeks ago

In this shader tutorial for Unreal and Unity, I show how to create caustics under the water that we've been creating. We use a volumetric decal and I show how to project the caustics on all three axes to give the appearance that the sun light is being focused and refracted by the water.

Textures used in this video can be downloaded here:
bencloward.com/youtube/water_caustics.tga
bencloward.com/youtube/water_norm.tga
bencloward.com/youtube/puddle_norm.png

Software for creating caustic textures:
https://www.dualheights.se/caustics/

My previous video on creating caustics in Unreal:
youtu.be/9z6EMsoqLDY

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Here's last week's tutorial on adding surface foam to our water:
youtu.be/VMpXSEomAAk

Here's the playlist for all of the videos in the series:
youtube.com/playlist?list=PL78XDi0TS4lGqHdLQGR2GHne85i9PebbN

Shader Book Recommendations
bencloward.com/resources_books.shtml

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Theme Music
Peace in the Circuitry - Glitch Hop
teknoaxe.com/Link_Code_3.php?q=1526

Background Music
Speo - The Little Things
youtube.com/watch?v=aoc9v_TRBqc

#UnrealEngine #shadergraph #Unity

$Underwater Caustics - Advanced Materials - Episode 41 In this shader tutorial for Unreal and Unity, I show how to create caustics under the water that weve been creating. We use a volumetric decal and I show how to project the caustics on all three axes to give the appearance that the sun light is being focused and refracted by the water. Textures used in this video can be downloaded here: http://www.bencloward.com/youtube/water_caustics.tga http://www.bencloward.com/youtube/water_norm.tga http://www.bencloward.com/youtube/puddle_norm.png Software for creating caustic textures: https://www.dualheights.se/caustics/ My previous video on creating caustics in Unreal: https://youtu.be/9z6EMsoqLDY Heres last weeks tutorial on adding surface foam to our water: https://youtu.be/VMpXSEomAAk Heres the playlist for all of the videos in the series: https://www.youtube.com/playlist?list=PL78XDi0TS4lGqHdLQGR2GHne85i9PebbN Shader Book Recommendations https://www.bencloward.com/resources_books.shtml Theme Music Peace in the Circuitry - Glitch Hop http://teknoaxe.com/Link_Code_3.php?q=1526 Background Music Speo - The Little Things https://www.youtube.com/watch?v=aoc9v_TRBqc #UnrealEngine #shadergraph #Unity$

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