User Manual

Fog [Fog]
The Fog node
Fog Node Introduction
The Fog node is used to create simulated fog effects on 3D-rendered images that contain a
valid Z-buffer channel. The fog can be placed in front of or behind various elements of a
rendered image based on the selected Z-channel planes.
Inputs
The Fog node includes three inputs: one for the main image with a Z channel, one for a blur
image, and another for an effect mask to limit the area where the depth blur is applied.
–
Input: This orange input is the only required connection. It accepts a 2D image that
includes a Z channel. The Z channel is used to determine the fog amount in different
regions of the image.
–
Blur Image: The green second image input connects an image that is used as
the source of the fog. If no image is provided, the fog consists of a single color.
Generally, a noise map of some sort is connected here.
–
Effect Mask: The optional blue effect mask input accepts a mask shape created
by polylines, basic primitive shapes, paint strokes, or bitmaps from other tools.
Connecting a mask to this input limits the fog to only those pixels within the mask.
An effects mask is applied to the tool after the tool is processed.
Basic Node Setup
The Fog node is typically placed after a Renderer 3D node. The Renderer 3D node must have
Z-Depth enabled in its output channels.
A Fog node added as a 2D post process after the Renderer 3D node
Chapter – 87 Deep Pixel Nodes 1928