Reflected Function node
A Reflected Function node is a custom node generated by reflection from an HLSL function defined in a file of your Unity project.
Parameters and ports
All parameters and ports of the node depend on the parameters and return type specified in the HLSL function signature, and their display and behavior depend on hints specified with the HLSL function.
To open the HLSL source file of a Reflected Function node, from the graph view, double-click on the node title.