Object IDs in RPFs?

[ralf_breninek]

Hello everybody,

unfortunately I can not export Object IDs via RPFs. An old thread from 2011 sais that the channels of the RPFs are not supported, is that still the case? If so: I guess I will have to go the standard C4D way with objectbuffers, right?

Cheers
Ralf

[aoktar]

this is quite complex issue here. you may know octane's objectid is different from c4d's concept. It generates colored areas for each object despite of c4d's black/white images for each objects. What can you do? You can use c4d's compositing tag. But it will not fit if you have motionblur/transparancy or dof.
Or try to use info kernel to get Octane's ObjectID's. For next versions we will try to change the way

[ralf_breninek]

Thanks for the quick reply Ahmet.

After some search through the forum I just found the corresponding options after switching the kernel, so I learned something new too

One Question I got though is: Is it possible to group several material IDs? Lets say I have 4 objects with 4 different materials, but I want to have the same mat Id for three of them.

[aoktar]

ok, this is good. Making some groupping is not possible i suppose. Colors are giving by Octane and it gives random colors to each indivual mesh. It's my request from devs of Octane. User definable colors. This will allow to set same colors to objects.

[ralf_breninek]

Ah thanks again for the quick clarification

Grouping IDs would be a big helper, although I still could add several chroma keys on one layer in After effects to group the material IDs, I am now going the standard C4D way with object IDs ...