Download RTXGI SDK

System Requirements

RTXGI SDK
Operating Systems
Windows 10 SDK v1809 (17763), or higher
Dependencies

DirectX® Raytracing 1.0 API, or higher
DXR Capable GPU


NVIDIA GeForce and Quadro products (Pascal and later) with 6+GB of VRAM and the latest NVIDIA Display Driver installed

Development Environment
CMake 3.15, or higher
Visual Studio 2017 or 2019


Latest Version for RTXGI SDK

Please review the license agreement and check the box below to indicate that you accept it and wish to proceed to join the early access program.


I Agree To the Terms of the NVIDIA RTX SDKs License Agreement



Release Notes

RTXGI SDK v1.1.31

Features:

  • Adds the ability to rotate DDGIVolumes.
  • Updates UE4 Plugin patch files.

Bug Fixes:

  • Fixes a control flow issue in the probe classification compute shader that stops back face hits from being treated as front faces hits.
  • Fixes a compilation issue on non-windows platforms.
  • Fixes an issue with perfect diffuse reflectors. Adds a BRDF absorption factor since perfect diffuse reflectors don't exist in the real world!
  • Fixes a color shift issue. Swaps packed irradiance textures to R10G10B10 format. Using 10-bits for all channels prevents numerical precision differences from causing discoloration artifacts in some cases.
  • Fixes a numerical precision issue preventing radiance from reaching black when using 10-bit texture formats (in some cases).
  • Fixes an issue where inactive probes were contributing to indirect lighting.


Download RTXGI UE4 Plugin

System Requirements

RTXGI UE4 Plugin
Operating Systems
Windows 10 64-bit
Dependencies

DirectX® Raytracing 1.0 API, or higher
DXR Capable GPU


NVIDIA GeForce and Quadro products (Pascal and later) with 6+GB of VRAM and the latest NVIDIA Display Driver installed

Engine Support
Unreal Engine 4.27


Latest Version for RTXGI UE4 Plugin

Please review the license agreement and check the box below to indicate that you accept it and wish to proceed to join the early access program.


I Agree To the Terms of the NVIDIA RTX SDKs License Agreement



Release Notes

RTXGI UE4 Plugin v1.1.40

Features:

  • Increased the number of volumes supported in the indirect lighting pass from 6 to 12.
  • Screen-space indirect lighting resolution is now adjustable through cvars.
  • Support blending of more than 2 volumes.
  • Extended Blueprint functionality to enable control of DDGIVolume properties at runtime.
  • Added a button to the DDGIVolume component that clears all probe data for the volume.
  • Added new UI settings for volume probe visualization. Includes options for the different visualization modes (Irradiance, Hit Distance, etc).
  • Added an option to the RTXGI project settings to enable / disable DDGIVolume serialization (storing volume data to disk).
  • Improved the RTXGI Editor UI in a number of places. Updated and improved UI tooltips.

Bug Fixes:

  • Fixed several resource barrier and transition issues (PC and console).
  • Fixed incorrect sRGB conversion when loading GBuffer data in the ApplyLighting pass.
  • Fixed compilation issues when ray tracing is disabled.
  • Fixed compilation issues for Linux / Vulkan compilation.
  • Fixed an issue where DDGIVolumes with the infinite scroll option enabled incorrectly applied the parent actor's rotation transform to the volume.
  • Fixed an issue where DDGIVolumes with the infinite scroll option enabled would not clear probe data from scrolled probes on movement.
  • Fixed an issue where DDGIVolumes with the infinite scroll option *disabled* would be black when another DDGIVolume in the scene had this option enabled.