NVIDIA VXAO

NVIDIA VXAO: Voxel Accelerated Ambient Occlusion is simply the highest quality ambient occlusion available in PC games today. VXAO’s world-space algorithm offers superior images, smoother response to camera movement, finer details and better accuracy than screen-space solutions. VXAO will run on DX11-capable GPUs, but is not intended to replace screen-space implementations for mid-range or budget platforms. For most games in development today, a gamer would want to see VXAO as a high-end option for those who have invested in the latest GPUs, while NVIDIA HBAO+ remains an excellent ambient occlusion solution for less luxurious systems. At left, a rendering using VXAO in a modified version of Unreal Engine 4 (image courtesy of Epic Games).

 

Image at right, NVIDIA VXAO provides the highest-level ambient occlusion quality in Rise of the Tomb Raider (image courtesy of Crystal Dynamics).

NVIDIA VXAO

Image at right, comparison of ambient occlusion channels for NVIDIA VXAO and screen-space AO.

NVIDIA VXAO vs SSAO

 
Key Features
  • World-space Ambient Occlusion algorithm.
  • Superior image quality, smoother response to camera motion than screen space techniques.
  • DX11 implementation.
  • VXAO is included as part of the NVIDIA VXGI library.
Details VXAO is part of NVIDIA VXGI global illumination technology, download the VXGI package below.
Platforms PC
Dependencies DX11
Engines UE4 (GitHub)
Links NVIDIA VXAO GDC Session Slides

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