Exponential High Fog is not working on mobile

[Jondet]

Hi there,

I am developing a game in UE5 for Android devices. However, I have a problem with Exponential High Fog usage. The fog is working properly on desktops but not on mobile devices. The below of the horizon is always black.

I already did a lot of research and test with UE5 but couldn’t find a solution. I know there is an answer about that in here but it didn’t help. Or I didn’t understand since I am also new in the UE.

Desktop preview: UE5 Desktop Preview - Album on Imgur

Mobile preview: UE5 Mobile preview - Album on Imgur

Is there anyone who faced this issue and knows the solution?

Thanks. Kind regards.

[krn1vor]

Check the DefaultEngine.ini in your project config file for the parameter r.Mobile.DisableVertexFog=True and try setting it to false (to enable fog)

GL&HF

[Jondet]

Thanks a lot for your answer. However, the config you mentioned is already false/disabled.

[DryreL]

Solution In Unreal Engine 5.6

1- Make sure to enable Android shader preview.

2- In the preview, I can see how it will look on the Android game. And fog instantly gone!!

3- Go to Project Settings. Search for “Fog”. And enable following settings.

4- In the level outliner, find and select ExponentialHeightFog

And make sure to “Emissive” option is NOT BLACK!!

5- Enjoy fog on Mobile devices!