Left Toolbar > Compose Nodes > Blend
The Blend node blends two images, background and foreground, into a single output image, using a blend function, and a mask input image.
inputs
bg
fg
mask
output
On the left toolbar choose Compose Nodes > Blend. >
Drag the Blend icon into the Node Graph.
Connect the first input image to the bg_image input socket.
Connect the second input image into the fg_image input socket.
Connect the third input image into the Mask input socket.
Set the attributes to control the Blend output.
bg_image
The background image.
fg_image
The foreground image.
mask
The mask image. The default mask value is extracted from the lower-left corner of this image.
image
The composed image.
Mode
Sets the blending mode:
normal:
multiply:
divide:
screen:
overlay:
dodge:
burn:
high light:
soft light:
grain extract:
grain merge:
difference:
addition:
subtraction:
darken only:
lighten only:
Opacity
The opacity of the foreground image in the blend process.
Background
If a background image is not connected to the node, this color is used as background.
Foreground
If a foreground image is not connected to the node, this color is used as foreground.