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Unity XR Plugins and Subsystems

Discussion in 'AR/VR (XR) Discussion' started by matthewr_unity, Jun 12, 2019.

  1. rz_0lento

    rz_0lento

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    Is this XR management plugin system using a public SDK / API? If it's totally behind the doors system, I could see so many things going wrong in the future.

    Even if Valve will get the OpenVR plugin out of the door now, there's no guarantee they'll maintain it on timely manner on API changes etc, which on it's own is making use of Unity for your desktop VR game a huge risk in the future.
     
  2. mfuad

    mfuad

    Unity Technologies

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    Hi @rizu, yes we've made our XR SDK accessible. In fact, one of the main reasons we've invested in the new XR plugin framework is driven by learnings from the closed door system. Over the past several years we realized that our approach in integrating XR platforms directly into Unity’s core engine was not going to scale well with the anticipated growth of new XR hardware/software providers. We realized we were getting in the way of innovation. So we decided to develop a new plugin framework (i.e., XR SDK) that opens up the door for XR providers to leverage our engine features & optimizations. This plugin-based approach improves our ability to make quick bug fixes, distribute SDK updates from our partners, and allows us to support new XR devices and runtimes without having to modify the core engine.
     
    Last edited: Feb 3, 2020
    jashan likes this.
  3. demonixis

    demonixis

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    @mfuad Hello, Can we have an update about Vulkan and OpenXR please?
     
  4. ROBYER1

    ROBYER1

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  5. demonixis

    demonixis

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    Thanks @ROBYER1 for the Vulkan update! Nothing about OpenXR? Is it still the next big thing?
     
  6. alexchesser

    alexchesser

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    I can confirm that Vulkan works on oculus quest if you comment out the check in the Oculus pack.

    Universal Render Pipeline is broken at the moment until 7.2.0 comes out (estimated later this week)
     
  7. ConanB

    ConanB

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    Where abouts would the SDK be so that I can implement a 'Stereo Display (non-head mounted)' plugin? as I still haven't heard anything on if Unity has dropped non-HMD stereoscopic completely or if they will have a plugin available :/
    Kinda means Unity is no longer an option for the CAVE and 3D display-wall systems I maintain.

    Or does "accessible" mean "only for paying third-party licensees"?
     
  8. mfuad

    mfuad

    Unity Technologies

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    There's a link in our blog post to sign up for access to our XR SDK; it does not require a fee. Again, our goal here is to enable the whole ecosystem. So if 3D display-wall systems like the CAVE is what you're interested in, you can implement that plugin like you mentioned.
     
    MechEthan likes this.
  9. rz_0lento

    rz_0lento

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    I'm sorry for bringing this up again but is there ANY way Unity can get us any estimate from Valve if their plugin plans to ship by the time 2020.1 is out this spring? Or get valve to give some response on their short term goals for this? There's like zero means for regular users to get this info and it does affect a ton of people here (and prevents people from migrating to the new XR management).
    This applies for 2019.3 and upcoming 2019.4 LTS, but the whole player settings XR menu got recently removed from 2020.1 alphas so support for OpenVR is defnitely getting removed on future versions and there's just a ton of uncertainty on specifically when are we supposed to get functional OpenVR for them.

    I'm not all that alarmed by this yet as 2020.1 is nowhere near done at this stage but it would be really nice to get at least some estimate instead of being totally in the dark.
     
    JoeStrout, kahunamoore and andybak like this.
  10. andybak

    andybak

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    Is there anyone other than people working on Quest exclusives who will use the new framework until this is answered? The number of people working on Rift exclusives is pretty small and most people developing for PC VR need to support SteamVR. And if you're working on a Rift or Quest exclusive you probably will ignore the new framework and use the Oculus SDK directly.

    So isn't the new framework useful to approximately no one until we get some clear word about SteamVR support?
     
  11. Thomukas1

    Thomukas1

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    Hi, guys. Hoping someone can help me out. I am trying to get URP to work with XR plugin. If i choose stereo rendering mode "Multi pass", only one eye renders in build. If i choose "multi view", i get 2 eyes rendering, but in incorrect places and i get very trippy double vision. Is there anything i can do about it?
     
  12. fherbst

    fherbst

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    @Thomukas1 wait for URP 7.2.0 release (which was postponed a couple of times now due to XR issues). If you feel experimental you can grab it from SRP github repo.
     
    ROBYER1 likes this.
  13. ROBYER1

    ROBYER1

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    There are still XR issues on that also sadly
     
    gjf likes this.
  14. rz_0lento

    rz_0lento

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    7.2.0 got released today :)
     
    alexchesser and brunocoimbra like this.
  15. dariony

    dariony

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    Hi @mfuad,

    Any ETA on XR SDK accessibility for those who submitted that form?

    thanks for the explanation!

     
    kahunamoore likes this.
  16. fherbst

    fherbst

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    Note that you can build custom XR Plugins directly in C#, no need to wait for SDK access to at least get started. You'll need some Reflection since many of the datatypes are "built for native" aka have no setters or constructors, but it's very much possible. I can probably share an example over the next days.
     
  17. torano

    torano

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    Oculus Desktop has only "Multi Pass" and "Single Pass Instanced" and Oculus Android has "Multi Pass" and "Multiview" option for rendering. Are Unity devs going to add "Single Pass" or not? I hope they will since my model has problem with Single Pass Instanced and I don't want to use Multi Pass for performance.
     
  18. Taanga_Praful

    Taanga_Praful

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    Anyone knows how to remove clipping limit in this new plugin? Whatever I change on camera clipping plane doesn't have any effect on actual VR camera. I am using Windows MR. Is it common for all or just me. Near clipping is stuck at '0.3'. @matthewr_unity
     
  19. ROBYER1

    ROBYER1

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    Using the XR Management Subsystems Package, how do we write code that compiles only for the plugin in use when building our app?

    For example, something like #if UNITY_XRMANAGEMENT_OCULUSXR or something similar?
     
  20. fherbst

    fherbst

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    I haven't tried it, but maybe you can use asmdef version defines for that?
    (see bottom)

    upload_2020-2-26_15-30-41.png
     
    ROBYER1 likes this.
  21. Claytonious

    Claytonious

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    @chengnan_yang please start a new thread for that rather than taking this thread off topic.
     
    andybak and ROBYER1 like this.
  22. AugmentedSpaceAgency

    AugmentedSpaceAgency

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    Did anyone had any luck using URP with Multipass Stereo Display (Non Head-Mounted)? Currently if the deprecated VR SDK from player settings is used, only the left eye is rendered.

    @ConanB we also work with a CAVE system using Unity and we started to update to Unity 2019.3, hoping to use URP, but didn't had any luck with that, probably URP not being compatible with the legacy VR SDK. Did you had any luck with the XR Plugin?
     
  23. michelletbs

    michelletbs

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    Do we need to reinstall XR management tool everytime when we create new project?
     
  24. Claytonious

    Claytonious

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    You need to import the package into each project, yes. (If that's what you're asking).
     
    gforeman, ROBYER1 and michelletbs like this.
  25. michelletbs

    michelletbs

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    Thank you Claytonious
     
  26. andybak

    andybak

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    It's the same as any packages (aside from URP and HDRP where they actually have their own template project in Unity Hub)

    If you find yourself using a set of packages frequently just create a template project. You can set up a Github template so it's as simple as forking that and cloning it locally.
     
  27. mikeNspired

    mikeNspired

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    Using Windows XR Package.
    Anywhere for the single pass option?
    Using SRP.
    I can only see text mesh pro in my left eye, and some shaders also have the same issue.
    I am also unable to use Post Processing, makes everything solid Gray.
     
  28. rz_0lento

    rz_0lento

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    Apparently OpenVR package already exists on some internal form as stumbled to this today:
    https://github.com/Unity-Technologies/InputSystem/pull/1083:


    That com.valve.openvr@0.9.0 package (or com.valve.openvr@0.9.0-preview) didn't exist on the current registry yet when I tried to add it to manifest manually :)
     
  29. andybak

    andybak

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    Is this it?

    https://github.com/zite/TestPackage

    (I tried a Github code search. This dude is a contract dev at Valve by the look of things. Hope I haven't just got him in trouble!)
     
  30. rz_0lento

    rz_0lento

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    Oh, that's a nice find!
     
  31. Thomukas1

    Thomukas1

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    Hi, guys, I am desperate for a solution. Using
    Using XR management and Universal render pipeline. 2019.3.2f1 and android build is broken. Invisible shaders, UI, particles. I am using Oculus XR plugin and had set rendering mode to "multiview"

    When testing inside editor with oculus link and rendering mode of "single pass instanced" everything works.

    Anyone had/has this issue?
     
  32. andybak

    andybak

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    This thread is about the new plugin system. Sounds like you want to create a new thread rather than jumping on an existing one
     
  33. Thomukas1

    Thomukas1

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    sorry, i will do that
     
  34. Sweet-JP

    Sweet-JP

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    If you get the error "Unable to start Oculus XR Plugin." PLUG IN YOUR HARDWARE (in my case, the quest headset)
    Since I couldn't find anything on this error I thought I would leave this here just to spare someone the headache I had this morning.
     
    harleydk likes this.
  35. VRHealthMain

    VRHealthMain

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    Does wave vr sdk is going to be supported or do i have to find a way to create my own loader to make it work?
     
    gforeman likes this.
  36. foonix

    foonix

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    @Taanga_Praful I had this problem and it turned out to be because my VR camera was not tagged as MainCamera. If you are using HDRP, check that your VR camera is tagged as MainCamera and is the only camera tagged as such. URP does not seem to have this problem because it does not get culling mask information from XRSDK, so I think this is an XRSDK problem.
     
  37. harleydk

    harleydk

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    Quick question, hope it's not too dumb, I'm still trying to find my way around the terminology. I'll develop a VR app with the XR Interaction Toolkit - does it seem likely I'll be able to export this as an WebXR app, some day? Appreciate all input, TIA.
     
  38. soleron

    soleron

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    It was never the next big thing.
    Nobody really wants to support it, although it would be a good thing for VR it doesn't make much business sense at this moment. they pretend to want it because it's good PR, but in reality they would rather people are locked in exclusive pens... uhm sorry, I meant ecosystems :p The consumer pie is still small so the more they keep for themselves the better.
     
  39. arfish

    arfish

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    I think it's a stupid idea if they (Facebook?) think they will increase their own market share by cutting the competition, instead of providing something better like more FoV, and eye tracked Foveated rendering.
     
  40. hippocoder

    hippocoder

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    They are correct in their actions and will dramatically increase their market share. Increasing market share is providing a standalone VR device that isn't the best tech but is affordable, simple to use and even a grandparent can master it. Quest was unprecedented - I didn't expect 75+ year old relatives to use it with no prior experience, but they did with ease and mastered it.

    And bought their own after.

    That is how you gain market share. You are the tiniest possible minority in this industry, while facebook, casual users, facebook vr MMO, these are all things that gain market share and further move the industry toward what you actually want (eye tracking etc) because the money is there for iterative improvement with cost spread over time.

    In any case it's offtopic. What Unity is trying to do is what Oculus already spoke about in connect 6, they want to make less custom API and use public engine API instead, to make devs lives easier. In reality, it's still a way off. Also anything unsupported is IMO Unity's fault, we as developers are not concerned with politics or backroom deals.

    So it's not the customer's fault if a store doesn't stock a popular brand, they will go to another store, epic etc. So really, if Unity cares about VR business, they'll make it happen. It's that simple.
     
    harleydk and gjf like this.
  41. ROBYER1

    ROBYER1

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  42. a436t4ataf

    a436t4ataf

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    Can you point me to some docs (or simple examples) of accessing this via script? Can't find any anywhere so far.

    SIMPLE USE CASE: I'm building an asset that builds on top of XR/XRInteractionToolkit, and I need to detect "which headsets have you installed (the XR plugins for)?", in script - so that I can react appropriately.
     
  43. deraggi

    deraggi

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    Since there is still no OpenVR Plugin, has anyone tried using Revive to develop on OpenVR Devices while waiting for the official integration?
     
  44. itsjustmeagain

    itsjustmeagain

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    Unity is leaving SteamVR in the dark? I have developed SteamVR applications for years with VRTK and SteamVR asset plugin.

    Today, I want to start a new Unity VR project and to be honest. I don't really know what to do. Can someone please explain to me what's happening?
     
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  45. ROBYER1

    ROBYER1

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    The OpenVR plugin is in the works, you can actually find it right now on github if you know the right place to look. It will be out in a beta soon.
     
    dariony, kahunamoore and demonixis like this.
  46. demonixis

    demonixis

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    I tried it using the test branch, it's not yet stable, I had many crashes when the headset is not connected. So it's a good idea to wait for the official release.
     
  47. ROBYER1

    ROBYER1

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    I also had lots of UniversalRP (maybe not specific to it) glitches such as flickering terrain and shaders but it's being worked on still
     
  48. nasos_333

    nasos_333

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    Is there any tutorial on how to setup latest XR for Androind VR in unity 20193.7f1 with URP ?
     
  49. FinalQ

    FinalQ

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    (Translator) Please tell me which plugin or SDK to use for the simplest development for a VR PC with maximum devices coverage?
    Is only the SteamVR plugin with URP enough if I want to put the game on Steam? It’s just that the plugin has not been updated since November 2019.
    Honestly, no matter how much I tried to understand this SDK/Plugins mess, I didn’t understand anything. In UE4, everything is much better in this regard, but the engine itself is too complicated for me.
    Unfortunately I have to use unity if I want to finish the game, but no specifics from the developers regarding the future of VR, inconstancy, uncertainty... :(
     
  50. a436t4ataf

    a436t4ataf

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    http://snapandplug.com/xr-input-too...R/OpenVR-working-with-XR-Interaction-Toolkit?

    I think it's incorrect to call this a "mess". Pre-XR, every VR vendor was making their own proprietary plugins etc but that's to be expected - every few months, new vendors were releasing new hardware features. OpenXR unifies that at a very low-level, and OpenVR unifies it at a mid-level. Unity's XR is then a good attempt to unify this at a high-level. So far, I've found Unity's XR very clear, very easy to understand (it literally takes one or two lines of code to do most basic things) - given that it's not even been released yet.

    The downsides are: Unity is very, very late in bringing this to market ... Valve and Unity seem to be in a commercial war where both of them are trying in small ways to disadvantage each other in VR (I say "seem" - it might just be coincidence, but I'm sure if both corps had chosen to work together, then OpenVR/SteamVR would have been integrated 12 months ago, and probably XR would have shipped sooner for having reused more code/expertise).

    There's also problems with URP/HDRP - but as Unity keeps trying to hide from people URP/SRP/HDRP are awesome but also fundamentally messed-up right now (they are horribly broken for Shader authors and asset developers) and a long way from production, possibly a year or more so I place most of that blame on SRP, not XR :).
     
    jiraphatK and FinalQ like this.
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