As a result, the emulator currently relies on spatial upscalers such as FSR 1, bilinear, and nearest-neighbor scaling.

Note for any reader who might not know this. FSR 1 is a more traditional upscaler, no Ai involved. And this can be used universally on any game and image without the game to have to support this explicitly. FSR1 is also builtin into the Steam Deck. AMD started using Ai and changed the entire upscaling technology since FSR2, because it could not compete on the visual and performance level of DLSS upscaler from Nvidia.