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30 lines
2.1 KiB
Markdown
30 lines
2.1 KiB
Markdown
---
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weight: 100
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title: Monado
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---
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# Monado
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- [Monado home page](https://monado.freedesktop.org/)
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- [Monado GitLab repository](https://gitlab.freedesktop.org/monado/monado)
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> Monado is an open source XR runtime delivering immersive experiences such as VR and AR on mobile, PC/desktop, and other devices. Monado aims to be a complete and conformant implementation of the OpenXR API made by Khronos. The project is currently being developed for GNU/Linux and aims to support other operating systems such as Windows in the near future.
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Essentially, Monado is an open source OpenXR implementation, it can be used as an alternative to SteamVR.
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Depending on the game, Monado can offer a better overall experience (if with less features) compared to SteamVR, or it might not work at all.
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Monado should always be utilized with the environment variable `XRT_COMPOSITOR_COMPUTE=1` to avoid stuttering when application is below maximum refresh rate of the HMD.
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Check your logs and ensure that the keywords REALTIME and COMPUTE vulkan queue has been created as opposed to MEDIUM and GRAPHICS queue types before opening issues about failing reprojection.
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If your monado-service is unable to acquire these properties in the debug logs `sudo setcap 'cap_sys_nice=eip' <monado-service-binary>` to ensure it can request the priority it needs.
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Monado's space may be modified with the environment variables OXR_TRACKING_ORIGIN_OFFSET_X=0.0, OXR_TRACKING_ORIGIN_OFFSET_Y=1.0, OXR_TRACKING_ORIGIN_OFFSET_Z=0.0 to force a defined space or origin offset throughout the session. Useful for seated mode configurations, offset units are floating point in meters, positive or negative.
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Monado is made for PCVR headsets, if you have a standalone headset you can check out [WiVRn](/docs/fossvr/wivrn/) or [ALVR](/docs/steamvr/alvr/).
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## Steam
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To use Monado as the OpenXR runtime with Steam, or if you're planning to use the SteamVR lighthouse driver in Monado, make sure to [run the room setup first](/docs/steamvr/).
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In order to use the SteamVR lighthouse driver in Monado, you just need to set the environment variable `STEAMVR_LH_ENABLE=true`.
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