User Manual

Object ID/Material ID (Sliders)
Use these sliders to select which ID is used to create a mask from the object or material
channels of an image. Use the Sample button in the same way as the Color Picker: to grab
IDs from the image displayed in the view. The image or sequence must have been rendered
from a 3D software package with those channels included.
Clipping Mode
This option determines how the domain of definition rendering handles edges. The Clipping
mode is most important when blur or softness is applied, which may require samples from
portions of the image outside the current domain.
 Frame: The default option is Frame, which automatically sets the node’s domain of
definition to use the full frame of the image, effectively ignoring the current domain
of definition. If the upstream DoD is smaller than the frame, the remaining area in the
frame is treated as black/transparent.
 None: Setting this option to None does not perform any source image clipping.
Any data required to process the node’s effect that would usually be outside the
upstream DoD is treated as black/transparent.
Use GPU
The Use GPU menu has three settings. Setting the menu to Disable turns off hardware-
accelerated rendering using the graphics card in your computer. Enabled uses the hardware.
Auto uses a capable GPU if one is available and falls back to software rendering when a
capable GPU is not available
Motion Blur
 Motion Blur: This toggles the rendering of Motion Blur on the tool. When this control is
toggled on, the tool’s predicted motion is used to produce the motion blur caused by
the virtual camera’s shutter. When the control is toggled off, no motion blur is created.
 Quality: Quality determines the number of samples used to create the blur. A quality
setting of 2 causes Fusion to create two samples to either side of an object’s actual
motion. Larger values produce smoother results but increase the render time.
 Shutter Angle: Shutter Angle controls the angle of the virtual shutter used to produce
the motion blur effect. Larger angles create more blur but increase the render times.
A value of 360 is the equivalent of having the shutter open for one full frame exposure.
Higher values are possible and can be used to create interesting effects.
 Center Bias: Center Bias modifies the position of the center of the motion blur. This
allows for the creation of motion trail effects.
 Sample Spread: Adjusting this control modifies the weighting given to each sample.
This affects the brightness of the samples.
Comments
The Comments field is used to add notes to a tool. Click in the empty field and type the text.
When a note is added to a tool, a small red square appears in the lower-left corner of the node
when the full tile is displayed, or a small text bubble icon appears on the right when nodes are
collapsed. To see the note in the Node Editor, hold the mouse pointer over the node to display
the tooltip.
Scripts
Three Scripting fields are available on every tool in Fusion from the Settings tab. They each
contain edit boxes used to add scripts that process when the tool is rendering. For more details
on scripting nodes, please consult the Fusion scripting documentation.
Chapter – 88 Effect Nodes 1971