Loading ...
Loading ...
Loading ...
There are some exceptions, such as tools for which deselecting these channels causes the tool to
skip processing that channel entirely. Tools that do this generally possess a set of identical RGBA
buttons on the Controls tab in the tool. In this case, the buttons in the Settings and the Controls tabs
are identical.
Apply Mask Inverted
Enabling the Apply Mask Inverted option inverts the complete mask channel for the tool. The mask
channel is the combined result of all masks connected to or generated in a node.
Multiply by Mask
Selecting this option causes the RGB values of the masked image to be multiplied by the mask
channel’s values. This causes all pixels not included in the mask (i.e., set to 0) to become black/
transparent.
Use Object/Use Material (Checkboxes)
Some 3D software can render to file formats that support additional channels. Notably, the EXR file
format supports Object and Material ID channels, which can be used as a mask for the effect. These
checkboxes determine whether the channels are used, if present. The specific Material ID or Object ID
affected is chosen using the next set of controls.
Correct Edges
This checkbox appears only when the Use Object or Use Material checkboxes are selected. It toggles
the method used to deal with overlapping edges of objects in a multi-object image. When enabled,
the Coverage and Background Color channels are used to separate and improve the effect around the
edge of the object. If this option disabled (or no Coverage or Background Color channels are
available), aliasing may occur on the edge of the mask.
For more information on Coverage and Background Color channels, see Chapter 18, “Understanding
Image Channels,” in the Fusion Studio Reference Manual or Chapter 78 in the DaVinci Resolve
Reference 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 edges are handled when performing domain of definition rendering. This
is mostly important for nodes like Blur, 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.
– Domain: Setting this option to Domain respects the upstream domain of definition when applying
the node’s effect. This can have adverse clipping effects in situations where the node employs a
large filter.
– None: Setting this option to None does not perform any source image clipping at all. This means
that any data required to process the node’s effect that would normally be outside the upstream
DoD is treated as black/transparent.
Chapter 98Film Nodes 1932
Loading ...
Loading ...
Loading ...