NVIDIA VXGI is an implementation of a global illumination algorithm known as Voxel Cone Tracing. Global illumination computes all lighting in the scene, including secondary reflections of light of diffuse and specular surfaces. Adding GI to the scene greatly improves the realism of the rendered images. Modern real-time rendering engines simulate indirect illumination using different approaches, which include precomputed light maps (offline GI), local light sources placed by artists, and simple ambient light.
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Key Features
  • Indirect diffuse interreflections
  • Specular effects
  • Area lights
  • Ambient occlusion
  • Dynamic geometry and lights
  • Reduces content creation time
  • Scalable
EnginesUE4 (GitHub)
Link requires UE4 Subscription
LinksGTC2014 - VXGI Presentation
GameWorks UE4 Forums

NVIDIA VXGI in Game/Demo Examples

NVIDIA VXGI in UE4 by Byzantos

Byzantos demonstrated what can be done with NVIDIA's VXGI technology in UE4. The results are amazing! We value the feedback and are working on improving this beta technology. Read more ...


Debunking Lunar Landing Conspiracies with Maxwell and VXGI

Explore the truth behind the iconic Buzz Aldrin moon landing photo. See how modern graphics innovations can shed new light on a 35-year-old conspiracy theory.


VXGI Tech Demo

The Cornell Box tech demo is the benchmark for measuring the quality of illumination technologies. With the power of the NVIDIA Maxwell architecture, the new GeForce GTX 980 and GTX 970 are the first graphics cards capable of accurately simulating Cornell’s impressive visuals in real time.


GI Demo at Editor's Day

GI demo presented at Editor's Day (Montreal).