NVIDIA Unreal Engine 4 Branch, DLSS, and RTXGI Updates Available Now With New Tools And Faster Ray Tracing

NVIDIA has released the latest update for its Unreal Engine 4. The update, tagged as ‘NVIDIA RTX UE4.26’ brings with it several new features, tools, and promises to improve Ray Tracing further.

The last update for the NVIDIA Real Engine 4 for 2020 has been released by NVIDIA. Alongside the update, NVIDIA has also released the first DLSS plugin that can be used with both NVIDIA’s NvRTX branch and mainline UE4, along with an updated UE4 Plugin for RTX Global Illumination.

NVIDIA RTX UE4.26 Features and Benefits:

The new NVIDIA UE4.26 Branch offers all of the benefits of mainline UE4.26 while providing some additional features:

  • Faster ray tracing: NVRTX includes a number of improvements to ray tracing performance. Some of these are tunable, some are automatic.
  • New tools: New debugging tools like the BVH viewer and Ray Timing Visualization allows developers to get a handle on ray tracing cost in their scene and get it tuned for speed.
  • Hybrid Translucency: Another way to do ray-traced translucency, with greater compatibility, speed, and rendering options.
  • World position offset simulation for ray-traced instanced static meshes (beta)
    • Allows ambient motion of foliage like trees and grass.
    • Uses an approximate technique of shared animations to reduce overhead for simulating a full forest.
    • Selectable per instance type.
  • Inexact Shadows (beta)
    • Deals with potential mesh mismatches of ray-traced and raster geometry.
    • Dithers shadow testing to hide potential artifacts.
    • Enables approximations that improve performance in the management of ray tracing data.

NVIDIA has also released an updated build of NVIDIA RTX UE4.25. It includes all of the new features listed above. Both the branches can be downloaded from here.


NVIDIA DLSS Plugin for UE4

NVIDIA Deep Learning Super Sampling or DLSS is a deep learning neural network that attempts to boost frame rates and generates synthetically enhanced sharped images for games. It promises to deliver the performance headroom needed to maximize ray tracing settings and increase output resolution.

NVIDIA DLSS is available for the first time for mainline Unreal Engine 4 but it is in beta. Still, NVIDIA DLSS is compatible with UE4.26. With this, gamers can enjoy greater scaling across all RTX GPUs and resolutions, and the new ultra-performance mode for 8K gaming. Developers can request access to the beta for the NVIDIA DLSS plugin for UE4 here.


Leveraging the power of ray tracing, NVIDIA RTX Global Illumination (RTXGI) attempts to provide scalable solutions to compute multi-bounce indirect lighting without bake times, light leaks, or expensive per-frame costs. RTXGI is supported on any DXR-enabled GPU and claims to be an ideal starting point to bring the benefits of ray tracing to existing tools, knowledge, and capabilities.

NVIDIA has updated its RTXGI UE4 plugin with bug fixes, image quality improvements, and support for UE4.26. Developers can request access to the RTXGI plugin for UE4 here.

Alap Naik Desai
A B.Tech Plastics (UDCT) and a Windows enthusiast. Optimizing the OS, exploring software, searching and deploying solutions to strange and weird issues is Alap's main interest.

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NVIDIA Unreal Engine 4 Branch, DLSS, and RTXGI Updates Available Now With New Tools And Faster Ray Tracing

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