Microsoft has just added the OpenXR standard to its Windows Mixed Reality devices, which aims to make it easier to port virtual reality apps and games between platforms.

Virtual reality has a lot of potential, but the number of different platforms and hardware makes things complicated – especially with certain games being exclusive to different devices.
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https://www.techradar.com/news/microsoft-brings-openxr-to-windows-mixed-reality-for-cross-platform-virtual-reality