Foveated rendering uses the eye tracking functionality built into your headset to improve the performance of applications and produce a better virtual experience.
Foveated rendering is available for XR-4 Series, XR-3, VR-3, and Varjo Aero.
With foveated rendering, the area with the highest image resolution follows your gaze so that you can always experience the best possible image quality. Simultaneously, your headset can render fewer pixels in peripheral areas, improving application performance.
Note that foveated rendering is enabled only in applications that support the feature. For more information on enabling foveated rendering in applications, see our Developer portal.
Calibrating foveated rendering
By default, foveated rendering is calibrated whenever you put on the headset. For best results, make sure to position the headset correctly when you put it on. Foveated rendering is calibrated by focusing your gaze on a dot shown on the headset screen for a brief moment.
In Varjo Base you can choose how often foveated rendering is calibrated. Navigate to the Headset tab and Foveated rendering. The following options are available:
| Always calibrate |
Foveated rendering is recalibrated whenever you put on the headset. This option is best suited for situations where several people share a headset and provides the best possible image quality. |
| Remember my calibration |
Foveated rendering is calibrated once. Your calibration settings are saved and reused in future sessions. This option is most useful when only one person is using the headset. |
| Best estimate without calibration |
Foveated rendering is calibrated using data from a statistical sample. This option works best when several people are using the headset in quick succession. Note that without calibration, eye tracking accuracy is not sufficient for the most demanding applications. |
| Never calibrate |
Foveated rendering is not calibrated. The area with the highest resolution is locked to the center of the display. This option can be a useful fallback if, for example, you cannot complete calibration with certain types of eyeglasses. |