Any alternatives to vray environmet fog?

[stayinwonderland]

I'm tired of a quick 2-5 minute render turning into a 2 hour render on the lowest possible settings when I place a fog in a gizmo into a scene.

 

Are there any alternatives out there?

[cg_Butler]

Have you tried adding fog in post production. Add a VRayZdepth output and then use that in your post production software to add in a fog.

 

Something like this

[stayinwonderland]

I'm well aquainted with using a fog pass. It might have to suffice but I really wanted some ground fog with a few chunks/whisps to it. For those misty/jungley scenes.

[cg_Butler]

I thought you probably were! Perhaps some Photoshop work on the fog layer using brushes and filters would create some whispyness to the fog?

 

Tricky to reproduce directly in a render I think. Perhaps this might be a workflow you could try and tweak? Smoke in Photoshop

[RyderSK]

Andy, use VrayEnvironment pass and use it as "screen" blend mode in PS. Apply BLACK VrayLightMTL to all objects in scene (you can do this though Override material if you don't have opacity maps, if you have opacity maps (on closeup trees) then you need to uniquely apply blackmaterial with opacity to these, to have correct fog interaction with these, this will give you quick (relatively, depending on settings of FOG) render.

 

My example: As you see, atmospheric pass in much more powerful compared to using Zdepth, as it features god rays too and better gradients. By adjusting its contrast, you can easily leave out building un-affected by fog, and modulate the intensity. It's very flexible and good solution. And if your clients dislike fog...then you have no problem with additional rendering, which, is always cool.

 

[Nic H]

i normally do that as well ^

xref my scene into one with a fog gizmo black override no gi and adaptive sub-d antilialiasing

beware once you put a few nested noise maps in to get phasing that mist /fog it can get quiet slow!

Edited November 20, 2012 by nicnic