[UE4/UE5] TIPS - Local Volumetric Fog

Volumetric fog can be tricky to setup sometimes. Here a simple way to create local volumetric fog.

/!\ You need to have an "Exponential Height Fog" with "Volumetric fog" checked on your level to make it work. /!\

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[RahhmiPoofs]

ObjectLocalBounds changed a little with it's outputs in 5.3. SIZE is now EXTENTS, and the DISTANCE bit might not come up in a search but it's in the D's under UTILITY for anyone that right clicks.

I had no problem setting this up and it works as intended. Mille mercis pour ce tuto!

[nottutorials]

All the parametres I found in the comments for my fog to work (UE 5.3.2)
- Your level needs an ExponentialVolumetricFog, with "Volumetric fog" ticked, and Start distance > 0
- Shadow quality and scalabity setting set to "High" or more for your project
- In the TransformPosition node, make sure you set up AbsoluteWorldSpace as Source and LocalSpace as Destination
- In ObjectLocalBounds, use Extend for the Size parametre
- Distance node is far down the list under "Utility"
- AbsoluteWorldPostiion uses the first output "XYZ"

[TorQueMoD]

I was so confused how this tutorial could be less than 30 seconds, but this is fantastic! Straight to the pont.

[Drachendrac]

Worked for me quite well in UE 5.1. For anyone struggling: Look out that shadow quality is at least set to high, otherwise it is invisible, as well as having volumetric fog checked on the exponential height fog

[nguyenphan]

Here's some tips to do if you're not getting the fog:
1. Make sure you have a HeightFog in your scene or any other variation. Make sure to enable the VolumetricFog in the details pannel of the Fog.
2. You can use LocalPosition node and use Local Position pin instead of getting the world absolute position and then transform it to local.

[staticbuilds]

The best tutorial format I have seen for this software

[TheSonicfanx]

I came back after like half a year and I finally got this to work.
My issue was I didn't set the Transform Position to "Absolute Local Space to Local Space". It was on default settings so it never worked.

[anferneeee]

This is by far the best, quickest AND easiest on volumetric fog. I know I've gotten this tutorial to work before but now I'm having the problem where it is invisible. I should have all the ExponentialHeightFog settings right but it makes no difference.

[BadPractices]

Absolutely amazing! I've tried a few fog tutorials but this one is the best yet!

[bradicalmusic]

Cool stuff! Make sure your scalability settings (the gear in the upper right in UE5) are set high enough to see the fog. Otherwise it will be invisible

[HenrikoMagnifico]

Hi! For whatever reason the material appears completely invisible to me? I have double checked that I have done every correctly as in the video. I'm using Unreal 5.0.1

[Tubusy]

Another hitch may be having any Start Distance in your Height Fog -> Volumetric Fog. That fixed the mystery of the missing fog.

[NebosvodGonzalez]

That looks very nice Love the God rays.
Now pro tip if you want to make fog that looks absolutely insanely incredible like with vortexes swirling all around you and stuff you've got to use fluid ninja which does cost 40 bucks but come on it's totally worth it.

[Pneumanon]

Man, why is it such a pain in the ass to set up volumentric fog in Unreal.

[sandmeister]

if you are having trouble getting this to work, I think it requires an ExponentialHeightFog actor, with "volumentric fog" enabled in your level

[SuperFoxyPaws]

I'm not sure where to find the 'distance' node for the material. What are you using for that?

[DamienRamirez]

I am finding in UE5.1 I need to connect up the Emissive by using the base colour via a multiply & With a Scalar param defaulted to 1 for it to work & to change the colour of the fog. Guess that is intended now? because my old Fog materials that Do still work are not blended without Emissive connected.

[vembdev]

Didn't work for me, but I missed that transformPosition in the material has to be worldspace to localspace, after that it worked.

[TheDavan]

Hey,
It works for me in UE5.0 like in the video, but only if I'm close to the fog cube. If I move the camera back a bit, the fog cube appears completely empty/invisible. Do you have a solution for this, or know what I might have done wrong?
Thanks

[teodorteovasileva]

Followed the tutorial exactly, transform position is set from world to local, high and epic settings, fog distance has been checked, volumetric fog turned on, played with the opacity but still nothing. Any advice? :(