weird checkerboard on rendering when shadow catcher is used

V-Ray V-Ray for 3ds Max Issues
1

Hi,

I got this error when rendering a room with shadow catcher. Room is just a photo and I need only a furniture in 3D. So I simply recreate the room and put some object in it and everything seems fine. But when I put more complex objects, this problem reveals. What am i doing wrong or how can I solve this please?
Thank you.

problem.jpg
problem.jpg471×428 29.2 KB

2

Hmm, it is caused by Matte for refl/refr in VRay object properties. When I disable it, GI seems fine, but I dont have reflections on objects.

3

There are pictures to compare.

1.jpg
1.jpg655×379 63.7 KB

2.jpg
2.jpg677×402 67.8 KB

4

This looks a lot like artifacts caused by the Adaptive Domelight. Disable the adaptive dome in the domelight settings and it should go away. However, it would be great if you could send the scene to Chaos, so they can fix the issue in the future.

5

Hey, you are right, thats it, thank you.
Yes, if its a bug and someone from Chaos want this scene, I will send it for sure.