One of the main features that comes with Unreal Engine 5, which is available for demonstration today, is the stunning super sonic time resolution, which according to Epic will help make possible the high-end graphics we are seeing in technology demonstrations (mostly so far, but nice looking rocks).
In short, Super Temporal Resolution is how our teams will maintain every possible geometric detail to place themselves in a scene with the UE5’s Nanite technology and its global lighting technology, Lumen, while maintaining decent frames. It is billed as an antialiasing technique, although it is very similar to Nvidia DLSS, there is not much to discern this and what you might consider a larger scale feature: they are basically two sides of the same coin.
"The new UE5 antialiasing solution, the super temporary resolution, maintains all this new geometric detail to create sharper and more stable images than before, with a quality that is closer to true native 4K at the cost of 1080p" , says Epic.
Epic points out the following advantages for Temporary Super Resolution:
- The output is close to the quality of 4k native renderings at input resolutions as low as 1080p, allowing for a higher frame rate and better rendering fidelity.
- Fewer ghosts against high frequency background.
- Reduced blinking in geometry with high complexity.
- Runs on any hardware compatible with Shader Model 5: D3D11, D3D12, Vulkan, PS5, XSX. Soon the metal.
- Shaders specifically optimized for the PS5 and XSX GPU architecture.
Shaders specifically optimized for PS5 and X Series? This is AMD RDNA 2 optimized, then.
AMD says it has "worked closely with Epic to optimize TSR features on Radeon-powered systems. An EU5 standard feature, TSR is enabled for all GPUs and provides a state-of-the-art extension. only on PC, but on PlayStation 5, and Xbox Series X / S, too ".
The freedom to work between all common APIs and hardware (including Nvidia GPUs included, of course) will certainly be a big help for Temporary Super Resolution.
You can actually see two different screengrabs from Epic's UE5 below, one rendered in native 4K, the other in 1080p and displayed in 4K. You may want to consult the full-size images on the UE5 documentation page to detect the difference.
The native 4K frame handles 18.6 fps, while the 1080p rendered frame reaches 43 fps.
Epic says that this is a completely new algorithm, created from scratch, which completely replaces the temporary AA in Unreal Engine 4. The temporary AA has previously played a role in Unreal Engine and Unreal Engine 4 already makes a form in temporal accumulation. Indeed, this is a way to use data from previous frames (hence "temporary") to add details to the current frame.
Epic promised that the use of temporary data would only increase with Unreal Engine 5 when we talked about the engine this time last year, and it seems as if the Super Temporary Resolution is the main novelty in this regard. This 4K performance enhancement is certainly nothing to smell, if it works as promised.
Unreal Engine 5 will arrive in early 2022, and we’ll probably hear more about it by then. In the meantime, it is possible to download a UE5 tasting in early access.