ALVR - Air Light VR

ALVR is an open source remote VR display. With it, you can play SteamVR games in your standalone headset. This is a fork of ALVR that is only working on the Oculus Quest

Description

ALVR streams VR display output from your PC to Oculus Quest via Wi-Fi. This is similar to Riftcat or Trinus VR, but our purpose is optimization for Oculus Quest. ALVR provides smooth head-tracking compared to other apps in a Wi-Fi environment using Asynchronous Timewarp.

All games that work with a Oculus Rift (s) should work with ALVR

Requirements

ALVR requires any of the following devices:

• Oculus Quest (Headset-Version 358570.6090.0 or later)

• High-end gaming PC

  • with NVIDIA GPU which supports NVENC (Supported GPUs)
  • (or with AMD GPU which supports AMF VCE) with latest driver
  • Windows 10 is recommended
  • Currently only NVIDIA GPU is supported on Windows 7
  • Laptops with dual GPU have to disable the on-board GPU

• 802.11n/ac wireless or ethernet wired connection

  • It is recommended to use 802.11ac for the headset and ethernet for PC
    • You need to connect both to the same router (or use a routed connection as described here)
  • Lower the channel width to 40Mhz to prevent stuttering (sources: here and here )

• SteamVR

Install ALVR server for PC

1. Install SteamVR
2. Download latest release from Releases
3. Unpack ALVR.zip
4. Run add_firewall_rules.bat as admin
5. Open ALVR Launcher

Install ALVR client for headset

For Quest: Install from apk

• Need to enable developer option for Quest.
• Download apk from Releases
• Check Installation.

Usage

• Launch ALVR.exe
• Press "Start Server" button or launch VR game
• SteamVR's small window will appear. You should see a headset icon in the SteamVR status window that looks like a green block with a bold S in the middle
• Launch ALVR Client in your headset
• IP Address of headset will appear in the server tab of ALVR.exe
• Press "Connect" button

Troubleshoot

• Floorlevel: Use the SteamVR room setup and calibrate the room as standing only. Put your Quest on the ground while calibrating. Make sure that the stream is still working by covering the light sensor of the quest. Enter a height of 0 into the room setup. Now you can press and hold the oculus key on the right controller to recenter SteamVR and fix the floor height at any time.

• If you got some error, please check the original Troubleshooting

• You find some setup advice here

Uninstallation

• Execute driver_uninstall.bat in the driver folder
• Delete the install folder (ALVR does not use the registry)
• If you already deleted the folder without executing driver_uninstall.bat:
  • Open C:\Users\%USERNAME%\AppData\Local\openvr\openvrpaths.vrpath and check install directory
  • Execute "C:\Program Files (x86)\Steam\steamapps\common\SteamVR\bin\win32\vrpathreg.exe" removedriver (install folder) in Command Prompt

Build

ALVR Server and GUI (Launcher)

• Open ALVR.sln with Visual Studio 2019 and build
  • alvr_server project is the driver for SteamVR written in C++
  • ALVR project is the launcher GUI written in C#
• Requires Cuda 10.1

ALVR Client

• Clone ALVR Client
• Build with Android Studio 3.4, API Level 29. Requires LLDB and NDK to build
• Install apk via adb

License

ALVR is licensed under MIT License.

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