Halftone Effect in Unity Shader Graph and URP

Halftone is a technique used for printing where tiny dots of different colors and sizes are layered to look like a full-colour image. In this video, I use Shader Graph to implement a similar technique, where the shaded regions of the image are converted into differently-sized darkened dots.
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👇 Download the project on GitHub: github.com/daniel-ilett/shaders-halftone
📰 Read this tutorial in article format instead: danielilett.com/2022-07-28-tut6-1-halftone/
🎮 This project uses Unity 2021.3.0f1 (LTS) and URP 12.1.6, but it should work with other versions.
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📚 Get a copy of my shader book here: www.dpbolvw.net/click-100742141-12898971?url=https%3A%2F%2Flink.springer.com%2Fbook%2F10.1007%2F978-1-4842-8652-4
🎨 Triceratops model by Zacxophone: sketchfab.com/3d-models/animated-triceratops-skeleton-06cb55f941d94dc8b95ac46f92d89e7c
✨ Grab Snapshot Shaders Pro here: assetstore.unity.com/packages/vfx/shaders/fullscreen-camera-effects/snapshot-shaders-pro-for-urp-hdrp-160556?aid=1101lfDLn
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💬 Join the Discord: discord.gg/tPQEUwPpb3
💖 Support me on Patreon: www.patreon.com/danielilett?fan_landing=true
☕ Or throw me a one-off coffee on Ko-fi: ko-fi.com/danielilett
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00:00 Introduction
00:32 How It Works
01:12 Lighting.hlsl Code
02:12 GetMainLight Subgraph
03:23 Halftone Properties
05:50 Halftone Behavior
10:28 Usage Examples
#gamedev #shaders #madewithunity

[@PatrikBergsten]

Brilliant with the voronoi node for the dots. Thanks for this!

[@danielilett]

I've been trying to think outside the box with nodes a bit more, was really happy when I figured that one out!

[@jtherussian]

Would you ever consider making a part 2 or a video about adding additional lights in the Main Lights Calculation?

[@danielilett]

I've handled additional lights before in my cel shading video, you might be able to tweak it for other effects: kzbin.info/www/bejne/oobQg32Ip7-ZfcU Usually I just include the main light in most effects because it's far easier to explain in the video. But yeah I think it would be a good idea to spin it into a separate video sometime!

[@izzynab332]

You are awasome keep the great work ;)

[@yocliwood]

Thank you, I learned a lot

[@ElpredatorGYRO]

I have a question on this : How to make it receive shadows from other objects ? It seems to me it does not.

[@alexvenegas7081]

What values you recomment to use in each variable to the shader look good?

[@accidentalgenius8252]

Good vid dawg

[@Weenmeen]

Hey Daniel I'm getting an error on my custom function node. It says "MainLight_float": no matching 0 parameter function at line 174

[@KenHaise]

how can you make it like this but instead of small circles, its lines, like spider-verse movie shader?

[@LittleKoneko]

i made something like this using the official unity spiderverse shader preview but this is so much easier and looks a lot nicer

[@Garfuneral_]

Is there any way I can get the shader?

[@LittleKoneko]

@@Garfuneral_ from me???

[@LittleKoneko]

thank you

[@tamerxero]

I tried to follow the project but the script, when put into the custom function node, threw errors saying there was an undeclared variable 'MainLight_Half.' Downloaded the version off Git to see if that worked, and my materials are still pink. Using 2021.1.11 (LTS), any tips you can provide?

[@SlimeWithClass]

I also have this issue, did you ever find a fix for it?

[@SlimeWithClass]

After some experimenting I fixed this by changing the file into a string type then copy pasting the function in

[@Thegabagabor]

same problem with version 2022.3.0 "undeclared identifier 'MainLight_half' at line 179"

[@Thegabagabor]

had to click on the "custom function"-Node and change the percision manualy to "Single"

[@Weenmeen]

@@Thegabagabor this didn't fix the issue for me

[@subhradipmajumder4204]

too osm broooo