Simple Rain Composite Group Node (Toony)

Description:

Simple Rain Composite Group Node.

I got annoyed that I had to use the particle system to make rain for a single image and it took so much time so I just made this simple Node that gives a (very) simple (sorta toony) rain look to a picture. It takes the normal of the objects and applies the rain drop over it. The rain image in front can be changed internally in the node group.