Saturday, December 26, 2009 at 10:39PM A quick-and-dirty edge detection post effect, using a Material post effect node. Relies upon 3 scene depth buffers and does an offset + subtract to find the edges. This technique can be re-combined with the original frame buffer to create edge effects (toon / colored edge rendering). [Unreal Engine 3]
Shader graph (click to enlarge):
;)
This uses the same technique, only applies it to the frame buffer (aka "Scene Texture" in UE3) instead of the scene depth. Some cool details can emerge when tinkering with the values a bit.
Shader graph (click to enlarge):
;)
Dave Prout
UPDATE - I've completed an extensive tutorial on post effects in UDK, now available from eat3D. It includes an updated version of this technique. Check it out!
Reader Comments