Is it possible to make vray environment fog less dense at the bottom?

[charliepower]

I want to make a graduated fog, dense at the top and clearer at the bottom. I tried adding a falloff map to the density but this didn't seem to work?

[Chris MacDonald]

Try limiting the fog with a box/whatever gizmo with UV mapping and then use a falloff/gradient map.

 

[edit] Ignore that, I can't seem to get it working either. I'm positive I have before though..?

Edited July 13, 2015 by Macker

[brendanrogers]

Do a search for volumetric fog tutorials.

[charliepower]

Thanks Chris, I didn't try with UV Mapping, I just added the falloff map to the density. I thought the gizmo fall off radius was the controller, but it doesn't seem to do anything

 

Thanks for your reply Brendan, obviously I've looked at tutorials but I haven't been able to find out what I need. Any links to specific tutorials you've found on this?