How can I make triangle using mapping nodes? I have a custom texture and need it to appear in triangle shape I know that I can use few Mapper nodes to make triangle or circle or any other shape but I don't know what other nodes I need to use to make a formula for triangle. Can anyone help me?
I'm "math disabled" ;) so this is my dumb version of triangle.

You can change Rotation in Mapping nodes as well as values in math nodes to achieve different triangles. 

What it does is basically creating 3 black&amp;white planes and then rotating them and offsetting.