Bloom & Glow Post Process Effect - Shader Graph Basics

Uploaded August 2022 | Updated September 2026, 2 weeks ago

In this post-processing shader video, I show how to create a bloom effect where bright parts of the scene create a bright halo. We use three filter kernels to create the effect - a tight core, a glow, and a large haze. Each of these are tunable with exposed parameters. Next week we'll combine this bloom together with last week's radial blur to create crepuscular rays or god rays.

If you know how to sample a lower resolution or pre-blured version of the scene in Unreal, please let me know in the comments!

Here's last week's video on radial blur:
youtu.be/KLOGaHgo2GY

Here's the playlist of all of the post-process videos:
youtube.com/playlist?list=PL78XDi0TS4lGORvoEKCyw_6dO9tzlu6Ox

Here's the playlist of all the videos:
youtube.com/playlist?list=PL78XDi0TS4lEBWa2Hpzg2SRC5njCcKydl

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

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