Hello,
I have a problem with a matte shadow material on the ground rendering with CPU.
Usually it’s a perfect matte shadow with uncolored transparent pixels. But sometimes, when I work with big scenes, the background becomes colored (violet, blue or green depending on the material method I use for the matte shadow).
When I use a standard shadow catcher from Chaos Cosmos: same result.
If I deactivate the Matte parameter in Vray, the problem disappears but I don’t have anymore shadows on the ground.
The problem appears only with CPU rendering, not with CUDA nor RTX. Once a scene appears that way with CPU, I can’t reverse it back to normal behavior.
The light is a simple dome light with standard parameters.
Graphic drivers versions don’t change the issue.
I rebooted my PC, same result.
My softwares versions:
Vray for Rhino 7 6.20.06
Rhino 7 SR38
Windows 11 Pro 10.0.26100
My configuration:
NVIDIA RTX A4500
Intel Xeon W-2133CPU@3.60GHz
Thanks in advance for your help!
Julien.
Pics:
1: CPU rendering - Cosmos Shadow catcher
2: CUDA rendering - Cosmos Shadow catcher
3: CPU rendering - old method wrapper material
4: CPU rendering - new method wrapper material
5: Cosmos Shadow catcher and light dome parameters
