Clever!
Thanks for your reply

Thank you for your reply. I will give it a try.

I would also like to see that!

+1 for a feature like this

It would be nice to see a material similar to Matte/Shadow/Reflection material in mental ray, with the ability to control from which light(s) to store the shadow(s), to store reflections and be able to "mask" objects in shots where you match geometry with live footage.
For product shots and ...

Windows 10
GTX 980 - 4GB
System RAM 24GB
nVidia driver version 368.22
OctaneRender plugin 3.00-3.13
3ds MAX 2016 (v18.0 SP3) x64

Hi,
Material IDs under a Mix Material are not working. They do work under a Multi/Sub Object Material.

http://i922.photobucket.com/albums/ad67/gazozas/octane%20renderer ...

That's what I did, as a workaround for the Object IDs. But my main goal was to have an extra pass from the Material IDs because the material of the boxes have 2 different materials under a Mix Material, a glossy one and a diffuse one.

http://i922.photobucket.com/albums/ad67/gazozas/octane ...

Sorry, I got confused. The 4 boxes have different materials, but the same Material ID.

edit:
The 4 boxes have different wrapping.

Yes I did. All 4 boxes have the same Mat ID.
Thanks man for replying.

Hi,

I have a rather simple scene, 4 boxes and a curved gound plane as my backdrop. What I want is to make a render pass from the Object ID or the Material ID for compositing purposes. I set up the Material IDs (all the same for the 4 boxes and a different one for the backdrop), but when I rendered ...