AMD describes itself as FidelityFX Super Resolution 2.0: “FSR 2 uses state-of-the-art temporal algorithms to reconstruct fine geometric and texture detail, producing alias-resistant output from aliased input. FSR 2 technology was developed from the ground up and is the result of AMD’s The result of years of research. It is designed to provide higher image quality than our original open-source spatial enlargement solution, FSR 1, launching in June 2021.”
The source code for FSR 2.0 includes the complete C++ code base, as well as the HLSL source code for Direct3D. There is also a code sample implementation and FSR 2.0 API documentation. FSR 2.0 supports Direct3D 12 and Vulkan.
Source code and documentation for FSR 2.0 is now available via GitHub: