Uploaded February 2025 | Updated September 2026, 2 weeks ago

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In today's shader tutorial, I show how to write the code required to support multiple light sources when creating a custom lighting model in Unity.

Here's the code - so you don't have to type it all out:
bencloward.com/youtube/lights.txt

Here are two tutorials showing how to customize the lighting model in Unreal Engine:
dev.epicgames.com/community/learning/tutorials/2R5x/unreal-engine-new-shading-models-and-changing-the-gbuffer
dev.epicgames.com/community/learning/tutorials/ow0x/unreal-engine-custom-shading-models-directly-in-your-material-graphs

Take a look at the playlist for the whole series:
youtube.com/playlist?list=PL78XDi0TS4lGnGa7L2X4o3UV-XYZEKNwj

Here's last week's video on using light color and shadow:
youtu.be/R6nO6dUdO4Y

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=kvCYuyyLgC0

#UnrealEngine #shadergraph #Unity