Vray Environment Fog Density - GPU? I can't seem to affect it at all.

[JD3D_CGI]

Can anyone help shed some light on why I I can't control fog thickness with Vray Env Fog in GPU?

Nothing seems to be working.

[matanov]

What do you want to achieve? The overall thickness is controlled by the "fog distance" parameter. Custom mapped density is not supported in VRayEnvironmentFog in V-Ray GPU yet, but you can use VRayVolumeGrid with mapped opacity to achieve this effect.

[JD3D_CGI]

I just wanted to make the fog a little clumpy.

Is the vray volume grid faster or slower the environment fog? or is it essentially the same thing?

[matanov]

The optimizations from Update 1 are for the Environment Fog. The VRayVolumeGrid should be a little slower than the Fog.