Unity is making a huge push to position itself as the leading game engine in the virtual reality space today at its Vision Summit where they made a series of new partner announcements and previewed big improvements coming to their VR rendering pipeline.
Latency is one of the most critical aspects of a real-time virtual reality experience. With too much latency, the viewer’s virtual world won’t respond as quickly as the real world, and this can quickly lead to discomfort in VR. Reducing the so called ‘motion to photons’ latency—the time it takes from the instant a user moves their head until the VR world moves around them—down below 20 milliseconds is vital to a convincing and comfortable VR experience.
One big part of that pipeline is the time it takes to render each individual frame of a VR experience. When a user moves their head, that movement data needs to be sent to the computer, and the computer must run through a bunch of code an math in a matter of milliseconds to calculate what the next picture of the scene should look like.
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