Uploaded May 2021 | Updated September 2026, 2 weeks ago

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✔️ Works in 2020.3 ➕ 2020.1

Noise, in graphics programming, is a function that produces pseudorandom numbers based purely on its input. Usually, it follows some pattern, but white noise has no pattern! This makes it perfect to generate random offsets, normals, or colors for a variety of shader effects. It's also useful in procedural generation, to make sure the world persists over playthroughs. In this video, I explain how white noise works and show some of its practical uses.

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💬 Video transcript
► docs.google.com/document/d/1diCKtiW-fcy49psJBFKYdc4EeFyTMHVpCf-emaWS6EE/edit?usp=sharing

📚 Reference scripts
► gist.github.com/NedMakesGames/2fc8e039f55d85bdb6f1bde2465164ba

⏲️ Timestamps:
0:00 Intro
0:15 Noise
1:05 Breaking it down
2:30 Using it in Unity
3:25 Salt and pepper
3:48 Sparkle shader
4:12 Random deformation shader
4:34 Procedural generation
5:00 Wrap up and credits

🎖️ Credits and references:
• Unity Technologies: white noise implementation - ronja-tutorials.com/post/024-white-noise
• TotallyRonja: White Noise - ronja-tutorials.com/post/024-white-noise
• polyperfect: Low Poly Ultimate Pack - assetstore.unity.com/packages/3d/props/low-poly-ultimate-pack-54733

Music:
Bleeping Demo by Kevin MacLeod
Link: incompetech.filmmusic.io/song/7012-bleeping-demo

License: filmmusic.io/standard-license

#GameDev #IndieDev #Unity