AMD accidentally marks FSR 4 open-source — source code reveals potential support for older Radeon GPUs

Screenshots of FSR 4 files accidentally published by AMD on GitHub reveal that the GPU maker was or is working on a second version of FSR 4 that works with older GPUs.

https://www.tomshardware.com/pc-components/gpus/amd-accidentally-marks-fsr-4-open-source-source-code-reveals-potential-support-for-older-radeon-gpus