https://wccftech.com/metalfx-upscaling-tech-is-apples-answer-to-nvidia-dlss-amd-fsr-and-intel-xess/

During WWDC 2022, Apple had quite a few surprises for gamers, chiefly the MetalFX upscaling technology part of the updated Metal 3 API. Similar to upscaling technologies like NVIDIA's Deep Learning Super Sampling, AMD's FidelityFX Super Resolution, and Intel's upcoming Xe Super Sampling, it will allow improved frame rates at high resolution.

Interestingly, the MetalFX developer documentation reveals that the upscaling technology supports both temporal antialiased upscaling (such as in DLSS, FSR 2.0, and XeSS) and spatial upscaling (such as in FSR 1.0).