Firestorm VR Mod 6.5.6

Firestorm 6.5.6 + P373R VR Mod: This build includes P373R’s VR Mod 6.3.3 changes merged into the Firestorm release branch. The VR Mod approach takes a minimalistic approach to inserting VR capabilities into the viewer in order that the maintenance overhead is decreased and the potential longevity of the approach is increased. VR Controller support is not included.

Download the release installer (for Windows only) from the “Assets” list at the bottom of the entry for the latest version available at

The user instructions are similar to Firestorm VR Mod 6.4.12 which is described at

For Firestorm VR Mod community support use the Discord Discussion Channel:
P373R-WORKSHOP by p373r_kappler [Invite]

Firestorm VR Mod 6.5.6 is created using “GitHub Actions” (GHA) thanks to @humbletim and @thoys. Minor manual changes are made for the VR Mod 6.3.3 code for the merge, which otherwise continues to be suitable. Some of the code for performance metrics wants to be just ahead of rendering, which is where the VR Mod inject points also wanted to be. Since they are independent it’s just a matter of explaining to git they are unrelated and can exist in any order. The cmake scripts are also amended to auto-include openvr.dll.

The App name has been changed to “FirestormVR” so the installation can exist side-by-side with stock Firestorm if desired. Settings are also stored in the different user folder C:/Users/<name>/AppData/Roaming/FirestormVR_x64. The asset cache is shared.

This release is for Windows, and a Linux build compiles but entering into VR mode via SteamVR on Linux remains to be tested.

Improving Frame Rate

To improve frame rate (FPS) you might opt to set shadows to “None”, Water reflections to “None: Opaque” and use a reasonably low draw distance appropriate to the scene. Also close viewer UI windows and tools and detach any HUDs you are not actively using. See advice on FPS improvement and the new “Performance Floater” and “FPS Autotune” capabilities in Beq Janus’s Blog Post (21-Mar-2022).

WARNING: Modern VR HMD systems have async reprojection (which helps prevent low frame rate nausea), but as it stands right now, accessing Second Life/OpenSim in VR mode is only for the very brave.


Misaligned VR Cursor

Note from Gaffe on Discord: Firestorm VR Mod’s VR cursor will have a small-to-extreme offset on Windows in particular if you are using Windows UI Scaling with any settings OTHER than 100%. To fix the VR cursor offset, set the Windows UI Scaling for your primary display to 100%

Jumbled VR Initialisation Text:

I have noted that Ctrl+Tab to start the SteamVR/HMD device software sometimes shows jumbled letters for the VR driver initialisation message, and once that occurs using Tab to launch VR mode does not give a VR display in the HMD.

After some experimentation, I found that after starting Firestorm VR Mod, rather than going straight to Cltrl+Tab to set up for VR devices, I first dismiss the onscreen message with Tab, and THEN do a Ctrl+Tab after which the full message without missing letters immediately appears, and SteamVR/Oculus is launched and when the Tab is then used the VR mode works properly. This may be a temporary situation and could be related to driver updates or SteamVR changes, but if you see the same thing, try the Tab and then Ctrl+Tab sequence once or twice to see if that also works for you.

Missing Menus and Buttons in Centred VR View

If you notice that the top menu bar and bottom and side button areas do not show in your headset when you are in VR Mode and your view is centred (i.e. mouse is positioned centrally in the 2D view) it may be that the VR settings you chose for Texture Shift and Texture Zoom need to be adjusted, or set to zero.

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1 Response to Firestorm VR Mod 6.5.6

  1. bat says:

    Graith on Discord is working on a Linux build of Firestorm VR Mod 6.5.6

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