Vertical synchronization synchronizes the framerates between headset displays and the application.
When running performance-intensive applications, the application framerate can fluctuate and cause graphical artefacts known as screen tearing. With the Vertical synchronization feature in Varjo Base, you can lower the framerate to improve performance and allow your application to run smoothly.
XR-4 Series, XR-3, VR-3, and Varjo Aero
Vertical synchronization is disabled by default. Navigate to the Headset tab and Vertical synchronization to choose one of four options. Note that if you select Disabled, Motion smoothing is not available.
| Automatic |
Varjo headsets operate at 90Hz, and if the application fails to submit frames at 90Hz, the virtual reality experience is not very smooth. If the framerate is not locked, the application can sometimes render the frames fast enough to hit the same number of screen refreshes as before, and sometimes not, which results in the same, old frame being displayed in irregular number of times. In such case the images may be stuttery. When you select vertical synchronization to Automatic, the headset adjusts the framerate by lowering it automatically until your application is running smoothly. You may want to use automatic synchronization if you use several applications that support different framerates. This may, however, mean that the framerate fluctuates between different values, which may result in some discontinuity in the image. If you mostly use one application only, and know the application framerate, we recommend using either one of the fixed framerates together with Motion smoothing to ensure the best experience. |
| Enabled – Fixed 45 fps | Fixes the headset framerate to 45 fps. Use this is if you know the application framerate goes over 45 fps. |
| Enabled – Fixed 30 fps | Fixes the headset framerate to 30 fps. Use this if you know the application framerate goes over 30 fps. |
| Disabled | Headset displays show the frames provided by the application freely without synchronizing them with the headset displays. Motion smoothing is not available for this option. |
XR-1 Developer Edition, VR-2 Pro, VR-2, and VR-1
Navigate to the Headset tab and Vertical synchronization to select a synchronization mode.
The default option is Adaptive synchronization, which makes a compromise between improved application performance and a lower framerate. Full synchronization lowers the framerate further to make sure that your application runs smoothly. Select Off to disable the feature completely.