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The Khronos Group recently announced a provisional specification of OpenXR, a royalty-free open-standard aimed at unifying access to VR and AR (collectively known as XR) devices. Also, Collabora announced Monado, a fully open source OpenXR runtime for Linux.

The OpenXR 0.90 provisional release specifies a cross-platform Application Programming Interface (API) enabling XR hardware platform vendors to expose the functionality of their runtime systems. By accessing a common set of objects and functions corresponding to application lifecycle, rendering, tracking, frame timing, and input, which are frustratingly different across existing vendor-specific APIs, software developers can run their applications across multiple XR systems with minimal porting effort—significantly reducing industry fragmentation.

That sounds pretty good and anything that can help cut-down developer time to support more platforms, is always a good thing. An open standard is always the better option too of course, since you're not locked into any specific vendor.

Click to enlarge.

Sounds like OpenXR is already gaining pretty good industry support too with Epic Games, Microsoft, Oculus, HTC, Tobii, Unity and more giving their backing to it. Hopefully this means it really will become a standard that's actually used preventing more fragmentation. Since no one headset has truly taken over just yet, with so many already throwing their support around for OpenXR it's looking pretty good.

As for Monado, the open source OpenXR runtime for Linux, this is where it gets a little more exciting for us:

But Monado is not just a runtime - beyond an open standard and an open source codebase, we want to build an ecosystem encompassing the various XR actors from the open source community and the XR industry. If you are an XR enthusiast, an open source hacker, a hardware vendor or already a major player in the XR industry, check out Monado and join our effort to make Linux a fully XR enabled platform.

According to Collabora, Monado actually pulls in hardware support thanks to projects like OpenHMD and libsurvive.

You can find the announcement about Monado here and the OpenXR announcement here.

Hat tip to Nod.

Article taken from GamingOnLinux.com.
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7 comments

Sslaxx 20 Mar, 2019
Hopefully that XKCD comic about standards won't come and bite them in the arse. Done carefully and properly, this could be a ground-breaker.
Kristian 20 Mar, 2019
If even Microsoft is supporting this, then this shouldn't have the main obstacle of success that OpenGL and Vulkan have had.
linux_gamer 20 Mar, 2019
Really good approach, I hope its not too late, though. We already have the graphical fragmentation and honestly I am surprised how many non-graphics developers and project managers I met haven't heard of Vulkan yet.
anth 20 Mar, 2019
There is a video showing this working with a full open source stack - Linux, Mesa, libsurvive with experimental positional tracking of a Vive headset, Monado for OpenXR, Godot game engine.

I'm amazed at the progress. A couple of days ago I thought positional tracking didn't yet work, and while I hoped that OpenXR would be introduced at GDC that wasn't known and there was no hint of an open implementation.
TheRiddick 21 Mar, 2019
Imagine a world if everything was just vulkan... it be amazing. I always cringe when a developer goes DX12 only,.

To date I haven't even tried VR, I want my first experience to be with nothing less then Pimax 5k+ level headset which is pretty good I hear (was a bit rough at start).
Unfortunately I will need to find a spare $2k under the lounge or something first.. could be a while...
buono 21 Mar, 2019
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Quoting: TheRiddickImagine a world if everything was just vulkan... it be amazing. I always cringe when a developer goes DX12 only,.

To date I haven't even tried VR, I want my first experience to be with nothing less then Pimax 5k+ level headset which is pretty good I hear (was a bit rough at start).
Unfortunately I will need to find a spare $2k under the lounge or something first.. could be a while...


and the graphics card to go with it..... :)
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