Microsoft DirectSR Runtime Based on AMD FSR 2.2
 

Microsoft revealed that its DirectSR (Direct Super Resolution) API, which seeks to standardize super resolution-based performance enhancement technologies in games, has a hardware-independent default code path that is essentially based on AMD FSR 2.2, a Microsoft Dev Manager speaking at GDC has revealed. DirectSR provides a common set of APIs for game developers to integrate super resolution—so that developers don't have to separately implement DLSS, FSR and XeSS. Rather these upscalers, and others, can register themselves with the DirectSR API, and then get fed a dozen of input parameters that they may (or may not) use to improve the upscaling quality. Since AMD has open-sourced the code of FSR 2.2 on GPUOpen, and it is entirely shader-based, and doesn't use exotic technologies such as AI, Microsoft decided to use FSR 2.2 as the base algorithm for DirectSR. If other algorithms like DLSS are available on the user system, these can be activated by the user, too, of course, but supporting them requires no extra work from the developer side.

https://www.techpowerup.com/320784/m...on-amd-fsr-2-2