Place texture on a specific coordinates

Is it possible to somehow dynamically pass in the shader coordinates on which to place the texture?
There is a desire to do something like circles on the water when contact with objects.
I would be grateful for any advice!

 

You can just SetFloat some kind of coordinate, then add that to the texture coordinates. If the texture contains a circle plus some `buffer` around it then it'll let you offset it without it cutting off... but your geometry is going to have to be big enough to contain the circle in all its possible positions.