Nvidia's Programmable AA

[Simon F]

Well... if we stopped *rasterizing* polygons and moved towards *sampling* them...

You've lost me there. Rasterisation is sampling. The problem is that polygon edges effectively have an infinite frequency spectrum and there's no nice way to "pre-filter" that spectrum to keep it below 1/2 the sampling rate.

 

[RussSchultz]

I htought the exact same thing before I got to the part about ensuring that a given pixel uses the same sampling pattern across every frame to avoid artifacts. I'm not sure how "programmable" you can get and still ensure that. I think it's "programmable" in the sense that the n-sized list of (x,y) offset pairs can be manipulated by the driver.

I presume the programmability is something akin to a seed for a PRNG that is reset for each frame.