HDRP Linear Fog

Hi,

I'm using Unity HDRP for my project. I would like to add linear fog to it but I don't understand how the new fog works and it's way too complicated for what i want to do. (set height, volumetric or no..)

I just want to set how far it starts and where it stops, like in URP, but I can't, and the result is very ugly.
After researching, I found that what I wanted to achieve was a Linear Fog, but the component is depracated in HDRP. I don't know what I can do and I don't know if my question is clear. If someone can help me that would be nice. ^^"

(sorry for my english)

 

I want the same thing.
It is very frustrating Unity made HDRP fog so scientific.
Great for first person shooters, but what about other games?

My game is top down, so my only choice is ugly foggy map, or sharp edges on the sides of the map, because there is no simple linear fog!

I am sure there is some kind of hack I could try using non-world fog volumes, but why cant HDRP just have simple Linear fog? I dont need it to do volumetric light blocking, or hi-def ray-traced emissive photon scattering... ...i just need some parts of the map clear, and other parts of the map obscured, that's it... ..like plain old linear fog does.

I remember using standard and URP years ago, and linear fog was literally a couple of settings. Now HDRP fog is super complicated... ....and ugly, and only applicable basically for first person shooters.

 

I don't mind the high number of settings in HDRP, once you get used to it, it's nice.
But yeah, fog could see some improvements. Like start and end distance from camera. There's the main setting which is density and distance based on camera, but it's not versatile -- can't quite get the results I want.

 

I like the power of HDRP and volume settings, I am just highly annoyed at the fog. Everything else, so far, is good.

It jsut grates me, because every months or so, I think maybe this time I;;g et the fog I want from HDRP, and after about 2 hours of fiddling with everything I can, I get all sorts of mad, and give up on good fog for my game in HDRP.

 

The problem is I couldn't figure out how to add it to an interior setting, it seems to be tied to lighting and my cave is very dark. The only thing it does for me is making the scene more black and I don't want that.

 

I think I found out how to do it. Just try these settings and turn off the volume fog then increase the exposure or emission of the color to get something similar to linear fog.



Note, I noticed it's kinda expensive because it's tied to your volume fog quality settings so you will have to sacrifice a little bit of quality for performance. I still wish HDRP had a cheap linear fog solution.

 

HDRP fog is so bad. They kept gradient lighting, why not linear fog?

 

Linear fog isn't photorealistic thus not important for Unity's shareholders.

However, stay tuned for the next upcoming half-baked hair solution that will be presented in 2024 alongside the new tech demo to be then abandoned in a few months!

 

disable the fog volume, use custom Postprocess Pass, inject after opaque and sky, write custom fog shader,
your shader should ignore the sky pixels

 

look this postprocess
https://docs.unity3d.com/Packages/c...finition@12.0/manual/Custom-Post-Process.html

you can use shadergraph to write custom postprocess shader

just need to add _MainTex as Texture2dArray property for shader
take carefully, this texture is a mip chain, you can sample it use ShaderGraph custom Function node