VrayEnvironmentFog not working with the RTX engine

V-Ray V-Ray GPU Issues
1

Hi,
I’ve got a scene that I need to use VrayEnvironmentFog with. The fog renders fine with CUDA, but not with RTX. Please see attached the simplified 3ds Max scene and some screenshots.

VrayEnvironmentFog_CUDA.webp
VrayEnvironmentFog_CUDA.webp1140×855 49 KB
VrayEnvironmentFog_RTX.webp
VrayEnvironmentFog_RTX.webp1140×855 22.2 KB

VrayEnvironmentFog_not_working_with_GPU_RTX.zip (704 KB)

2

Hey @Alex_M ​, I’ve managed to reproduce it and I’ve added it to our bug-tracking system as VGPU-6221. This is caused by the plane objects that are inside the Box gizmo, which is not working as expected with RTX. If you move them outside, RTX should match CUDA.

3

I see. Thanks for logging this!