The Displace filter applies distortion according to a pattern defined by a displacement map. The lightness values of pixels within the displacement map determine the degree to which the distortion occurs.
The following settings can be adjusted on the context toolbar:
Strength—sets the intensity of pixel displacement. Negative values shift pixels upwards, positive values shift pixels downwards.
Beneath—determines the displacement map using layers beneath the selected layer.
Load—uses a loaded image as the displacement map. Navigate to, then tap the file to load.
Scale To Fit—when enabled, the displacement map stretches or shrinks to fit the document size. If disabled, the displacement map retains its native dimensions.