Can I generate a random number inside a pixel shader?

Question

I\'m trying to write a very simple shader that adds random sparkle to applicable objects. The way I\'d like to do this is by adding a random shade of white (R = G = B) to th

Answer 1

what if you can get a checksum of the whole frame and use it as a seed. that way if anything on the frame is moving the selection you are trying to randomize will be shifting with the frame.