SteamVR Hotfix Reduces Oculus Link Positional Latency

A hotfix for SteamVR claims a prediction enchancment that reduces positional latency for Oculus Quest in Oculus Hyperlink mode.

Oculus Hyperlink is the characteristic which lets the Oculus Quest act as a PC VR headset by way of any prime quality USB cable. This offers Quest homeowners who personal a gaming PC entry to the Oculus Rift library and SteamVR.

Oculus Link OutlineOculus Link Outline

SteamVR helps Rift and Hyperlink by appearing as a intermediary between the Oculus runtime software program and the operating SteamVR app. Some options reminiscent of the protection boundary are left to the Oculus software program, however different options, like monitoring prediction, are dealt with by SteamVR.

Trendy VR techniques don’t use the uncooked positional monitoring worth when deciding tips on how to transfer the digital cameras that characterize the person’s eye. Even after absolutely the monitoring (from the cameras or lasers) is fused with the inner accelerometer values, the place can’t be used as a result of it’s old-fashioned. That’s as a result of it must be sampled earlier than the body begins rendering, and thus can be old-fashioned.

As a substitute, algorithmic-based prediction is used. The positional knowledge from the previous couple of seconds (or typically much more) is analyzed and from this the system can extrapolate to the place the headset is prone to be when the photons from the following body will really hit the person’s eyes. Some platforms use machine studying for this, whereas others use hand crafted algorithms.

Valve didn’t go into particulars on precisely what was improved. The precise changelog entry reads:

Fastened prediction when utilizing Quest+Hyperlink (improves positional latency).

Reductions in latency can be appreciated by Oculus Hyperlink customers greater than with different PC VR . That’s as a result of Hyperlink doesn’t ship a uncooked video sign, it as a substitute compresses the picture. It takes time to encode (compress) and decode (decompress) every body, and this provides latency.

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