Re: [Flightgear-devel] VR Options Menu Is Not Available In Daily Build

[James H. <ja...@al...>]

Hi,

On Tuesday, 9 August 2022 10:46:01 BST SV001R wrote:
> I watched DorDekKiddy's clip (https://www.youtube.com/watch?v=6_wRrQYWfPU)
> and I want to use VR device for FlightGear

I hadn't seen that :)

> I downloaded daily build and connected the device and also installed and
> executed "OpenXR for Windows Mixed Reality" app from Microsoft Store.
> 
> But in FlightGear, "VR options" in view menu is in grey color and not
> available. (no response for any click on it)

There are two issues here:

1) The windows nightly builds don't build with VR enabled. The only component 
missing I think is the OpenXR loader which needs to be built for flightgear 
build to find it. I've tested this once on a family member's PC with a dummy/
virtual headset. I'd love for this to be fixed to allow more people to try it, 
but it isn't something I can easily test (though I may get a chance soon).

2) WMR's OpenXR doesn't support OpenGL, and nobody has implemented the sharing 
of textures between OpenGL and DirectX in osgXR yet. Patches welcome, but as a 
Linux user it won't come from me. Your best bet to workaround that is to use 
an alternative OpenXR runtime such as SteamVR (if you try with Oculus' OpenXR 
runtime, do let me know how it goes. I've only been able to test with Monado 
and SteamVR).

Cheers
James