How to Make Simple Fog | Unreal Engine

This tutorial will show you how making simple fog inside Unreal Engine. We are going to use a post process volume and create master material that will be able to control the fog values. This way of making fog in UE4 is very simple and easy on the performance of your game.

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#Fog #UnrealEngine #Tutorial

[keldy]

For the lerp short cut:

L + Left click

[enigma_dev]

If you see flickering around edges of meshes:

This is likely caused because temporal antialiasing is happening before your fog
To make fog (and post processing) happen before antialiasing,

1) In the post process material, find "blendable location".
2) Set blendable location to "Before Tonemapping".
3) done, the fog will be antialiased now.

Tone mapping and antialiasing are not the same thing... but that is the only way I have found to ensure fog occurs before antialiasing.

(you may also want to disable motion blur)

[savannahbryant]

This was really helpful since I was setting it up to take some pictures for my models for a class! He made it sound really simple and was easy to follow along with!

[ThadeousM]

Found this great for slapping on a scene before showing a producer for feedback!

[lisowi.]

Ayo, pretty cool tutorial and easy to follow. I did everything like yourself in the video but the fade isn't working and I just get a blueish atmosphere. Is there a fix for this?

[lorennoorda]

how do i get the lerp, used key commands and i have no idea.

[zimnelredoran]

Hi, I couldn't make it work in UE5, no other post processing array elements. When I add the fog material it simply does nothing.

[stealthgamesaremyjam]

Awesome! this is a really nice effect.
I do have some questions.
with this fog effect, I have a SkyLight and DirectionalLight active in my world. what I've come to notice is when I look Directly towards the sun, the sun isn't visible because of the fog. Is there some technique where I can have the sun shine through the fog so I can see the sun?

I'm sorry if this doesn't make sense

[oztekofficial]

how do you even get the lerp ? no explanation

[peter]

tryed it in unreal 5 i get some strange bug i get a Square in the viewport :(

[yozegami]

How did you make the node at 2:38 ? The one that gets converted to a parameter.

[SINfromPL]

Post process isn't cheap.. so the tutorial is pretty much invalid from the start