As Sensei said, the Input Node is the replacement for the Spot Info node.
As a addition for all those who are not familiar with the spot info:
It provides access to information regarding the current hit point being evaluated. For surfaces, this basically means for each pixel of the rendered surface.
For comparison: With the help of a gradient we color the surface of two objects.
For one, we use the world position output of the
item info to control the gradient.
Item info returns
the position of the objects pivot point. The whole surface has the same color, depending on the position of the object.
For the other we use the world position output of the
input node to control the gradient..
This gives us an
indivitual color for each spot of the surface. Since we are using world position output, the color here also changes depending on the position of the object.
The two objects:
Maybe it would be useful to collect a few use cases for the input node in this thread.
ciao
Thomas