Human eye resolution

Quad view

Rendering for the Varjo headsets is very similar to rendering for other HMDs. The main difference is that applications must submit four views instead of two. There are two displays for viewports per eye: a human-eye-resolution focus view and a high-resolution peripheral view. Rendering four views is called quad view.

Foveated Rendering

Foveated rendering uses eye tracking to render the image in full resolution only in those areas where the user is currently looking. This allows for significantly improved performance and frame rate with minimal to no perceived loss in quality. This method mimics the way our eyes work in real life, taking in the greatest detail around the center of our gaze. Foveated rendering is available for all Varjo headsets when quad view is used.

In Varjo XR plugins for Unity or Unreal, Varjo Native SDK and OpenXR examples, these features are enabled by default.

To learn more about how the image is rendered to the Varjo HMD, see Achieving performance with high resolution rendering.

For detailed technical information, see Rendering to Varjo headsets.