Alpha Composite
Description
Composites alpha channels with channel and blend mode options for each of the five sources.
Node Group
Composite.
Controls
Channels
Chooses which channel to use for the composite.
Red
Uses the red channel.
Green
Uses the green channel.
Blue
Uses the blue channel.
Alpha
Uses the alpha channel.
Blend
Selects the composite Blend mode.
Add
The pixels of one image are added to another image.
Subtract
The pixels of one image are subtracted from another image.
Multiply
Produces a result where there is a union of pixels from two images.
Difference
Produces a result where a value exists in each image, but not in both.
Max
Looks at the luminance information for each image and selects the value—whichever is brighter—as the result. Darker pixels are replaced while brighter pixels do not change.