How can i apply gobos to a spotlight to make it look like a real life moving head light? as you may know most moving head lights used on live stages and dj shows have a gobo feature which allow the light to be restrained on some parts of the spot, as if a cookie cutter was placed in front of the light source, this results in various shapes.
How can i recreate this effect in blender on a light ?(i'm using 2.8 and Eevee)
i already have some black and white gobo textures ready if it can help (see picture below)



Many thanks in advance !
What worked for me (for the same exact purpose) was to use either geometry (as @RBlong2us suggested - with the wanted shape made firstly as a vector image and then extruded in Blnder) or even simpler (as is in my example) by using a plane and put it in front of my spotlight (as a real gobo would be) with an alpha texture. In order to make this working you should take care of the blend Mode and Shadow Mode of the plane's material. You may take a look on the image below.