Fog and Opacity Maps

[JonasNöll]

Hi,

have never noticed that before but when using Fog or Aereal Perspective and Opacity Maps in your shaders then the fog doesn't respect the Opacity Maps.
For example here I have a plan with a leaf texture mapped onto and the fog is ignoring the opacity map. Is there any workaround or secret setting to make this work?

[vladimir_krastev]

Hi, thanks for posting. I am not able to reproduce this. Are you using V-Ray CPU or V-Ray GPU? What are your 3ds Max and V-Ray versions? Could you attach a simple scene for review?

[JonasNöll]

Hi,

I just did a bit more testing and it seems to happen only when using a Aereal Perspective AND a VrayEnvironmentFog together. If you switch off one then it seems to be fine.
Is it even ever intented to use both at the same time? Just for the scene I was working on it created exactly the look I was after.
Nonetheless I attached a scene with the issue. Latest V-Ray and 3ds Max 2024.

[vladimir_krastev]

Hi, thanks for the scene.
If you move the VRayEnvironmentFog above the VRayAerialPerspective in your scene it will work.