User Manual

Fog 3D [3FO]
The Fog3D node
Fog 3D Node Introduction
The Fog 3D node applies fog to the scene based on a depth cue. It is the 3D version of the Fog
node in the Deep Pixel category. It is designed to work completely in 3D space and takes full
advantage of anti-aliasing and depth of field effects during rendering.
The Fog 3D node essentially retextures the geometry in the scene by applying a color
correction based on the object’s distance from the camera. An optional density texture image
can be used to apply variation to the correction.
Inputs
The Fog 3D node has two inputs in the Node Editor, only one of which is required for the Fog
3D to project onto a 3D scene.
–
SceneInput: The required orange-colored input accepts the output of a 3D scene on
which the fog is “projected.”
–
DensityTexture: This optional green-colored input accepts a 2D image. The color
of the fog created by this node is multiplied by the pixels in this image. When
creating the image for the density texture, keep in mind that the texture is effectively
projected onto the scene from the camera.
Basic Node Setup
The Fog 3D node is placed after the Merge 3D node that contains the scene. Viewing the Fog
node will show the fog applied to the objects in the 3D scene based on their Z position.
A Fog 3D node placed after the Merge 3D scene
Chapter – 80 3D Nodes 1670