Nvidia researchers have come up with a new Temporal Anti-Aliasing (TAA) method which adds adaptive ray tracing rendering techniques to the mix. The new
Adaptive Temporal Anti-Aliasing (ATAA) is primarily an improvement as it adds less blur, and can remove ghosting artefacts from a scene which you might get with TAA. Furthermore, ATAA is fast enough to be implemented in games and was demonstrated by the researchers in Unreal Engine 4.
We introduce a pragmatic algorithm for real-time adaptive supersampling in games. It extends temporal antialiasing of rasterized images with adaptive ray tracing, and conforms to the constraints of a commercial game engine and today’s GPU ray tracing APIs. The algorithm removes blurring and ghosting artifacts associated with standard temporal antialiasing and achieves quality approaching 8× supersampling of geometry, shading, and materials while staying within the 33ms frame budget required of most games.