@jumpman your shaders skills are getting more and more impressive with each post!
I'm currently working on a floodfill pathfinding algorithm (thanks to Superku, in the past he poked me in the right direction with arrays) Here is a video on my youtube channel (click screenshot to redirect)
Edit2: newer version arrived Same, here is a video (click screenshot to redirect)
Edit: I got 1000 function calls (it's called recursion I guess?) to find a path on an empty 4096 tile map (64x64 - from upper left edge to lowest right edge), what do you think about this results? Is it really too slow for this kind of pathfinding, share your thoughts please.