Ali Fatoorechi

Hi,

I am not sure if I understand you correctly.

In your setup the blocker is set not to receive shadow from light2 and it's not.
If you mean the faint visible trace of the blocker on `cube1` as can be seen in your second snapshot (highlighted with red box),
then this is due to diffuse interreflection of the blocker itself. You can either set diffuse bounce to zero on the render settings
or set '-diffuse` (along with your `-primary`) in Render Geometry Settings > Render Visibility.

There is also a new Karma Blcker Light Filter [www.sidefx.com]
for this purpose. I have attached a modified version of your scene for the use case.

Please let me know if this didn't answer your question. Thanks.

Hi,

It's hard for me to say what the problem is from the description/snapshots.
Would you be able to share a hip file or log a bug please? Thanks a lot!

Hi,

I don't see any discrepancy in my tests between the two engines. It would be great if you could share a test scene (or better if you log a bug) that demonstrate the difference. Thank you!