User Manual

Inputs
The following three inputs appear on the Volume Mask node in the Node Editor:
–
Image: The orange image input accepts a 2D image containing a World Position
Pass in the XYZ Position channels.
–
Mask Image: An image can be connected to the green mask image input for refining
the mask.
–
Effect Mask: The blue input is for a mask shape created by polylines, basic primitive
shapes, paint strokes, or bitmaps from other tools. Connecting a mask to this input
limits the volume mask to certain areas.
Basic Node Setup
Below, a MediaIn labeled RGBA contains the main rendered image from a 3D scene. A World
Position Pass from a 3D-rendered scene is labeled WPP_PASS. The Channel Booleans node is
used to map the X position pass to the red channel, Y to the green channel, and Z to the blue
channel. The Volume Mask tool extracts the 3D position information from the World Position
Pass to place a mask in 3D space. The mask is then used as an effect mask on a color corrector
to selectively color correct objects in a 3D scene.
A Volume Mask tool takes advantage of World Position Pass for color correction in a 3D scene
Inspector
Chapter – 104 Position Nodes 2337