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NVIDIA RTX Global Illumination

NVIDIA - Code Plugins - Aug 26, 2021

NVIDIA RTX Global Illumination is a scalable solution that computes multi-bounce indirect lighting without bake times, light leaks, or expensive per-frame costs.

  • Supported Platforms
  • Supported Engine Versions
    4.27, 5.0

The RTXGI UE plugin only supports UE 4.27 and UE 5.0. UE 5.1 is not supported.


NVIDIA RTX Global Illumination is a scalable solution that computes multi-bounce indirect lighting without bake times, light leaks, or expensive per-frame costs. RTXGI is supported on any DXR-enabled GPU and is an ideal starting point to bring the benefits of ray tracing to your existing tools, knowledge, and capabilities.


Features:

No UVs. No Light Baking. No Light Leaks.

  • Dramatically speed up iteration time with real-time ray traced lighting. No more obsessing over light probe positioning; no light or shadow leaking

Infinite Bounce Lighting in Real Time

  • RTXGI's probe-based data structure temporally accumulates and filters irradiance and distance information in real time, creating a high quality infinite-bounce cache with visibility information

Content Creation at the Speed of Light

  • Artists get instant results in-editor or in-game. Move an object or a light and global illumination updates in real time

Available for any DXR Capable GPU

  • RTXGI's scalable design gives you the control to decide when and where maximize performance or image quality


Latest Version: RTXGI Plugin v.1.1.50 (April 2022)

  • Added support for UE 5.0 release
  • Fixed a crash that occurred in the UE4 Editor in Debug Mode
  • Added Linux build support (allows building with Win64 blueprints on Linux platforms)


Please see the project file link for the full release notes and access to the latest version of the plugin.

Technical Details

Code Modules: FRTXGIPlugin (Runtime) / FRTXGIEditor (Editor)

Number of Blueprints: 0

Number of C++ Classes: 5

Network Replicated: No

Supported Development Platforms: Windows 10 64-bit

Supported Target Build Platforms: Windows 10 64-bit

Supported RHIs: D3D12RHI, D3D11RHI, VulkanRHI

Documentation: RTXGI Plugin Installation Guide [UE4.27][UE5]

Example Project: Sample projects are included in the UE4 and UE5 downloads of the RTXGI Plugin .zip file


Video Tutorials: Getting Started with NVIDIA RTXGI Unreal Engine 4 Plugin


Important/Additional Notes:

  • The VulkanRHI and D3D11RHI can only use runtime static volumes since these RHIs do not currently support ray tracing in UE4.