>You're right; you can't spread things out (scatter) using WebGL during a single pass, you can't do the classic Floyd Steinberg implementation the same way you

>You're right; you can't spread things out (scatter) using WebGL during a single pass, you can't do the classic Floyd Steinberg implementation the same way you do on the CPU. So it's important to understand that there is another way to do it, and it doesn't look like what you're used to. It doesn't spread things out by pushing error around inside the loop. It spreads things out by letting each destination pixel pull the error from it's neighbors before computing it's own error, rather than pushing it's own error to it's neighbors after computing. This is known as a gather, as opposed to scatter. It is mathematically the same thing, but the order of operations is turned around. That makes significantly more sense now. I thought you were saying I could do normal floyd-steinberg sequentially somehow. I am unsure on the mathematical implimentation, but I will keep looking at this. I would think there would be a paper on this method somewhere. I really appreciate the time you've taken to respond. Not many webgl people out there that can actually point out how it all works and whats possible, and I definitely learned something.