= Blender HMD Support =
For virtual reality support, it's crucial that Blender has tools to work with a variety of HMD (head-mounted display) devices. At the bare minimum, it should be able to handle input from them and render a viewport adjusted vor HMDs.
If we want to work towards a more feature rich support, we need a solid base system, meaning good initial interface and code design decisions are needed.
== HMD Drivers ==
While there are free drivers available for all common HMDs, almost none are cross-platform and compatible with Blender's GPL license.
Currently the only option that fits those needs appears to be the [[ http://openhmd.net/ | OpenHMD ]] driver/library. It's still a young project - features such as position tracking are still missing - but it's heading into a promising direction.
The point has been raised though, that it should be possible to use other drivers as well and let the user decide which one to use.
== UI/Workflow ==
The UI/workflow should work well together with multiview/stereo 3D since they are greatly overlapping features. HMDs require some special features though, which need to be implemented nicely too.
Most HMDs work just as an additional screen, so Blender should allow to open a separate window and render the HMD driven viewport into this.