One of the interesting new features is Temporal Super Resolution, an upsampling technique that promises massive performance gains at the cost of some image quality. Epic Games provided an example of a scene that renders at native 4K with just 18.6fps. Using Temporal Super Resolution to upsample 1080p input, the technique offers 43.0fps.
Temporal Super Resolution
Nanite micropolygon geometry and the fidelity demands of the next generation of games have increased the amount of detail displayed on screen like never before. To meet these demands, we've written a Temporal Super Resolution algorithm from scratch that replaces UE4's TemporalAA for higher-end platforms.
Temporal Super Resolution has the following properties:
Output approaching the quality of native 4k renders at input resolutions as low as 1080p, allowing for both higher framerates and better rendering fidelity. Less ghosting against high-frequency backgrounds. Reduced flickering on geometry with high complexity. Runs on any Shader Model 5 capable hardware: D3D11, D3D12, Vulkan, PS5, XSX. Metal coming soon. Shaders specifically optimized for PS5's and XSX's GPU architecture.
In Unreal Engine 5 Early Access, Temporal Super Resolution is enabled by default in your project settings.