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CINEMA 4D R11 Quickstart – Multi-Pass Rendering
The compositing tag makes it possible to assign an image buffer to one or more objects in the scene. Assign a
compositing tag to the cone as well. Activate the second buffer.
The sphere and cone are now in two separate image buffers, 1 and 2. Now we have to activate these buffers in
the Render Settings. Add 2 “Object Buffers“ by selecting them from the “Multi-Pass...” menu. For the first, leave
the “ID“ set to “1“ and set the second to “2“. Render the scene and open the new file in Photoshop.
At first glance nothing has changed in the Photoshop file. There are still only five layers. Where are the new
objects? They can be found in the channel palette. An “Alpha Channel“ was created for each object. An alpha
channel is a gray scale image used to cut out objects in the image.