Right now it would be pretty noisy even on slow-moving games, but it’s a good start. I’ve never done graphics work professionally so take this with a grain of salt, but I’d wager that fast-moving games can probably actually get away with tricks like this even more than slow-moving ones because you can add motion blur on top of it and players will rarely have a chance to closely investigate the graphics, which allows you to take more shortcuts.
As far as I understood the article the method works like this:
- per pixel estimate which lights contribute
- from those lights pick a random one and store how much it contributes
- give priority to lights that contribute the most
- the next frame uses the data of the previous frame
- neighboring pixels are used to remove noise
I wonder how useful this is for fast moving games. Wouldn't this be very noisy?