Valve Contributes OpenVR Video Driver To SDL

Merged to upstream SDL today is an OpenVR video driver that was developed at Valve Software.

OpenVR is the SDK and API developed by Valve as part of their SteamVR effort and supports multiple vendor headsets. Charles Lohr with Valve has now contributed an OpenVR video driver to the upstream Simple DirectMedia Library (SDL) project for that widely-used, cross-platform hardware/software abstraction library. Thus in turn enhancing SDL's support for outputting to OpenVR-supported headsets.

This SDL commit adds the more than five thousand lines of new code for introducing this OpenVR video driver to upstream SDL. Yet more feature goodies for SDL3.

This new OpenVR video driver is gated by the "SDL_OPENVR" CMake build option.