V-Ray 4.10.02: Directionality causes problems on shadow catcher

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

Hey guys, I have some problems here with the directionality feature of the V-Ray Light. First two images show a standard situation, teapot on a plane. Image 1 is without directionality, image 2 is with directionality of 0.7.
So far, so good. The second row of images now has the plane set to shadow catcher with the button from the toolbar. For some reason, the shadow gets transparent with directionality of 0.7. Why is that? Scene file attached.

direct_bug_03.jpg
direct_bug_03.jpg1477×1108 34.4 KB
direct_bug_04.jpg
direct_bug_04.jpg1477×1108 70.5 KB

direct_bug_01.jpg
direct_bug_01.jpg1477×1108 33 KB
direct_bug_02.jpg
direct_bug_02.jpg1477×1108 37.8 KB

directionality_bug.zip (43.2 KB)

2

This was fixed in the nightly builds a while back and will go into the next service pack.

Best regards,
Vlado

3

Hm, I can’t really reproduce the issue here, even with the current official builds. Just open the scene, set the directionality to 0.7 and render, right?

Best regards,
Vlado

directional_test.png
directional_test.png1920×1160 175 KB

4

Yes, indeed. Let me check again if I did something stupid.
Well, I just checked and the problem is as described in the first post. Set direcionality
Max 2017 SP3, V-Ray 4.10.02.00001

5

EDIT: I just found out it happens in IPR only! I didn’t test production renderer, sorry. However, if you could fix it in IPR too, that would be great.

2058ad6c7523923b4566567ec59069f3ba764146f7cb09e978c1e813d194ee38.jpg
2058ad6c7523923b4566567ec59069f3ba764146f7cb09e978c1e813d194ee38.jpg400×345 24.7 KB

6

Ah, yes, now I can reproduce the issue - will fix it. Thanks a lot for the pointer!

Best regards,
Vlado