User Manual

Table Of Contents
A 3D rendering of a scene (Previous Page) and its World Position Pass (Top).
For more information on using the World Position Pass in Fusion, see Chapter 76, “3D
Compositing” in the DaVinci Resolve manual or Chapter 25 in the Fusion Studio manual.
Propagating Auxiliary Channels
Ordinarily, auxiliary channels are propagated along with RGBA image data, from node to node,
among gray-colored nodes, including those in the Blur, Filter, Effect, Transform, and Warp
categories. Basically, most nodes that simply manipulate channel data propagate (and
potentially manipulate) auxiliary channels with no problems.
However, when you composite two image layers using the Merge node, auxiliary channels only
propagate through the image that’s connected to the background input. The rationale for this is
that in most composites that include computer-generated imagery, the background is most
often the CG layer that contains auxiliary channels, while the foreground is a live-action green-
screen plate with subjects or elements that are combined against the background, which lack
auxiliary channels.
Viewing Auxiliary Channels
You can view the auxiliary channels by selecting the desired channel from the viewer’s toolbar
or the viewer’s contextual menu. The Color Inspector SubV can also be used to read numerical
values from all of the channels.
Selecting a channel from the viewer’s toolbar.
Chapter – 69 Understanding Image Channels 1404