This was extremely helpful, thanks so much for the info! I decided to only use the first step in the process to create a mask for the correct surfaces that I can use in compositing and still use a beauty render from octane, but I'm very glad to know how the whole process would work if I wanted to do it all in C4D for other shots.

Wow thank you so much for this, I’ve been pulling my hair out trying to figure out how to get this working! I will try it as soon as I’m back at my office tomorrow, sounds like exactly what I’m looking for.

Thanks for the quick reply! I typically use octane, but it is not necessary for this project, I am comfortable using the standard renderer or redshift as well if need be.

I have a shot with a 3D-tracked camera moving through a garage, and I want to project a logo texture onto the pillars so that when the camera comes to rest at the end of the shot, the logo resolves into it's final shape.

The track and projection are basically working, but the problem is that currently at the start of the shot the logo projects all the way through the pillars onto the background, and you can see duplicate parts of the logo in different areas of the shot as the camera moves: https://imgur.com/a/L6dNBlu

Is there a way to limit the texture projection only to the areas of the scene geometry that the projection camera can directly see? In other words, is there a way to have the scene geometry naturally occlude the geometry behind it from the perspective of the projector camera?

Ideally each pillar would only include enough of the logo that the pieces all line up at the end, but no more, and the floor would only show the logo on parts that are visible at the end of the shot.

I could manually cut up the geometry with the knife tool and potentially achieve this with complicated selection tags on the material, but I was hoping there would be a more procedural solution if possible.