Vray environment fog - Using non atmospheric gizmos as gizmos for the fog effect

[stevesideas]

I thought I managed to do this once but I cant seem to get this to work now...is this actually possible or did I just dream it ?

Basically I have a land mass that undulates and I want some ground fog to rise and fall with the undulations of the land. I created a low poly version of the land and applied a shell mod to it to create some volume for the fog. I then turned off the rendering for this object but selected it to use as a gizmo for the vray env fog...didnt work though !

[vlado]

Did you check the normals on the shell object? Does it work for other objects?

Best regards,
Vlado

[jacksc02]

I have used geometry as a gizmo and it works perfectly.

Steve one thing to check is the "fog height" make sure the value is high enough to cover the top of the geometry gizmo

[peterguthrie]

shouldnt fog height be ignored when using a gizmo? or has that changed? or has it always been like that??

[vlado]

The fog height is ignored when using gizmos.

Best regards,
Vlado

[jacksc02]

Vlado,
Could the fog height be greyed out if a gizmo is used?

[vlado]

Yes, will see what can be done about that.

Best regards,
Vlado

[stevesideas]

Sorry havent had time to check this problem. I'll try and get a look at this soon.

[peterguthrie]

actually i have been having problems getting this to work too with vray 2, definitely used to work

[vlado]

Works for me, but if you have a scene where it does not, please send it to me at vlado@chaosgroup.com - there might be something else there.

Best regards,
Vlado

[vlado]

Nevermind, I found the problem; will post a patch for VRayEnvironmentFog here a bit later.

Best regards,
Vlado

[peterguthrie]

great!

I just managed to get it to 'work' (break) by turning on/off DR. Without DR it worked fine, turning DR on broke it straight away.

[vlado]

Here is the patch: http://www.spot3d.com/vray/misc/vray...vfog_patch.rar

It will go into the next official update of course - this patch is only for V-Ray 2.00.02.

Best regards,
Vlado

[stevesideas]

Good stuff. Thanks Vlado.

[stevesideas]

Had time to finally test this out. All working fine now.