environmentfog more dense on ground

[Jiri.Matys]

Hi,

I was trying to achieve fog to be more dense on ground and lets say 1m over the ground will be no fog with textured gradient. But still no luck, I am missing something probably, what I have to do to make this work please?

[MANUEL_MOUSIOL]

I might be wrong but I think it is not possible .Maybe you can combine it with a volume grid or so?

[Jiri.Matys]

Its deffinitely possible with gizmo for fog and applied texture. But I am probably doing something wrong.

[MANUEL_MOUSIOL]

CPU or gpu?

[Jiri.Matys]

I am writting on standard 3ds max VRay forum, not the GPU one, so CPU.

[MANUEL_MOUSIOL]

Better to ask. A lot of people don't care about that and then there are mixups

[Vizioen]

Great write up: https://www.the-boundary.com/blog/ca...-08-atmosphere

[Jiri.Matys]

Yes, great article, but he didnt use gradient map, only noise. I tried do this with blend of more fogs, but it is not exactly what I want.

[Vizioen]

You're right. Any gradient I tried (Gradient, Gradient Ramp, Bercon Gradient, Falloff,..) nothing worked as I wanted. I remember trying something similar in the past and as you noticed now too, it didn't work. Not sure if we're doing something wrong or it's not supported or bugged. Hopefully someone smarter can shed some light on this.

[Raven]

Does it need to be a gradient, can you not achieve it with gizmo falloff?

[Raven]

I have got it to work using a box as gizmo.
Then set gradient to Planar from XYZ, rotate y angle to 90.
I did have to color map the gradient to get a more linear blend from white to black.

[Jiri.Matys]

I tried gradient as planar from object xyz, but it didnt work. Did you tried it with box gizmo only or standard box object as fog gizmo as well?

But looking good, thanks for this tip.

[Raven]

I used a standard box not a atmosphere gizmo, and you do need to rotate the y in the mapping by 90 or it wont work.
I'll upload the scene when I get home.

[Raven]

Works with gizmo as well

Scene attached

[Vizioen]

Weird I tried exactly that, with no result, even with the rotated mapping as mentioned.