Scene Depth Difference node

The Scene Depth Difference node returns the difference in depth between a world space position and a value from the depth buffer.

Ports

Name	Direction	Type	Binding	Description
Scene UV	Input	Vector 4	None	Sets the normalized coordinates at which to fetch the scene depth from the depth buffer. The default is the normalized x, y coordinates of the fragment in screen space. For more information about the options, refer to the Screen Position node.
Position WS	Input	Vector 3	None	Sets the world space position to compare the depth value at Scene UV to. The default is the x, y, z position of the fragment in world space.
Out	Output	Float	None	The difference in depth between Scene UV and Position WS. The value depends on the Sampling mode property. The distance is negative if the depth value from Scene UV is closer to the camera than the depth from Position WS.

Sampling modes

Name	Description
Linear 01	Returns the distance in linear normalized space. The minimum distance is 0, and the maximum distance is 1.
Raw	Returns the distance in the non-linear space the depth buffer uses. The minimum distance is 0, and the maximum distance is 1.
Eye	Returns the distance in meters.