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@@ -12,7 +12,7 @@ You can get the "Bigscreen Beyond Driver" app from Steam working via Proton by f
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The "Bigscreen Beyond Driver" and most of its features should be working fine after doing the above!
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Note that currently firmware updates do not work.
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Note that currently eye camera firmware loading and updates do not work, but HMD firmware updates do work.
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## Download Windows SteamVR via SteamCMD
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You can easily downlwad the Windows version of SteamVR via SteamCMD. To do this:
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@@ -38,4 +38,72 @@ You can also swap modes more easily without using the "Bigscreen Beyond Driver"
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1. `XRT_COMPOSITOR_DESIRED_MODE=0` is the 75hz mode
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2. `XRT_COMPOSITOR_DESIRED_MODE=1` is the 90hz mode
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You can verify which modes are which by using a tool like `xrandr` with the HMD plugged in. The top two modes are the relevant ones used here and are listed in order, starting at an index of 0.
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You can verify which modes are which by using a tool like `xrandr` with the HMD plugged in. The top two modes are the relevant ones used here and are listed in order, starting at an index of 0.
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## Bigscreen Beyond 1/2/2e `udev` Rules
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You may need these udev rules (ie: in `/etc/udev/rules.d/`) for full functionality.
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```udev
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# Bigscreen Beyond
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KERNEL=="hidraw*", SUBSYSTEM=="hidraw", ATTRS{idVendor}=="35bd", ATTRS{idProduct}=="0101", MODE="0660", TAG+="uaccess"
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# Bigscreen Bigeye
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KERNEL=="hidraw*", SUBSYSTEM=="hidraw", ATTRS{idVendor}=="35bd", ATTRS{idProduct}=="0202", MODE="0660", TAG+="uaccess"
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# Bigscreen Beyond Audio Strap
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KERNEL=="hidraw*", SUBSYSTEM=="hidraw", ATTRS{idVendor}=="35bd", ATTRS{idProduct}=="0105", MODE="0660", TAG+="uaccess"
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# Bigscreen Beyond Firmware Mode?
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KERNEL=="hidraw*", SUBSYSTEM=="hidraw", ATTRS{idVendor}=="35bd", ATTRS{idProduct}=="4004", MODE="0660", TAG+="uaccess"
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```
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## Bigscreen Beyond 2e Eyetracking via Baballonia under Linux
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### Requirements:
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* Windows 10/11 dual-boot availability or separate Windows 10/11 machine
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* Some form of re-streaming the Bigeye camera to bypass broken `v4l`/`uvcvideo` default drivers; `libuvc` is known to work, as does `cameractls` for viewing the cameras as well
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* ie: `go-bsb-cams` modified from `garymcbay/mjpeg` for this purpose by @lillia
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To have functioning eyetracking while using a Bigscreen Beyond 2e under Linux, you will currently need to supplement the Baballonia portion of the software stack via Proton.
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The full stack can be pictured as such:
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```mermaid
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graph TB
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E[Bigscreen Beyond 2e]-->F
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F[Bigscreen Bigeye]-->A
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E-->M[Monado]
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M-->O[OpenComposite]
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M-->X[XRizer]
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O-->D
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X-->D
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A[go-bsb-cams using libuvc] --> B[Baballonia.Desktop.exe] --> C[VRCFT.Avalonia] --> D[VRChat/etc.]
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subgraph Linux Native
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A
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C
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E
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F
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M
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O
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X
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end
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subgraph Proton/Wine
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B
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D
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end
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```
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`go-bsb-cams` can be found here: https://github.com/LilliaElaine/go-bsb-cams
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`Baballonia` releases can be found here: https://github.com/Project-Babble/Baballonia/releases
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`VRCFT.Avalonia` releases can be found here: https://github.com/dfgHiatus/VRCFaceTracking.Avalonia/releases
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You will need to boot into Windows and use `Baballonia.Desktop` there in order to train any and all models as needed so that you can then transfer them over to your Linux filesystem. They are typically stored at `%APPDATA%/Roaming/ProjectBabble/Models` on Windows and can be loaded from wherever you like via the `Babbalonia.Desktop` GUI.
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Then you can start `Baballonia.Desktop.exe` via `Proton` as a "non-steam game" and tell it to load your pre-trained model, the `Baballonia` setup executable can be run first and then you'll want to point the Steam Library entry to the proper `Baballonia.Desktop.exe` afterwards for future launches.
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**NOTE:** You'll need to disable `GPU Acceleration` for it to track the full volume as it seems to be weirdly clamped while `GPU Acceleration` is enabled under `Proton`.
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`Baballonia.Desktop` can be given the `http://127.0.0.1:8080/stream` endpoints for each camera if you're using `go-bsb-cams` to load the cameras. You'll need to adjust cropping and brightness for the cameras as necessary, but it should allow you to easily select the whole left/right areas automatically for the Bigeye in particular.
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Ensure `Baballonia.Desktop` is set to provide `Eye` or `Both` tracking to `VRCFT.Avalonia`, alongside the `Native OSC` option if desired, and then launch `VRCFT.Avalonia`. If successful, you should see some small transfers of data, assuming the `VRCFT-Babble` module is loaded in `VRCFT.Avalonia`.
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Assuming all goes well, you should be able to see OSC data coming in with it enabled after launching VRChat under `Proton`. Avatar parameters should load into `VRCFT.Avalonia` and you should see both send/receive values for data rates at this point alongside live results within VRChat itself.
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kzd