Monado now calculates OpenHMD viewport dimensions and offsets correctly, we can pass those through.
The rotation of the rendered texture is performed with the distortion function.
v2: Use rotation matrix multiplication for distortion rotation
v3:
targets: Add Monado-SteamVR driver target
st/ovrd: Add OpenVR driver header
build: Factor out sdl hack into lib_sdl2_hack and update steamvr build
build: Revert lib_sdl2_refactor
steamvr: Emulate Index Controller by default
steamvr: Use oxr_handle_destroy instead of exposing oxr_instance_destroy
steamvr: don't use oxr internals
steamvr: communicate 3dof tracking to steamvr
steamvr: use util functions for device assignment and tracking origin setup
steamvr: Install plugin to <prefix>/share/steamvr-monado
steamvr: Use thread for updating poses every 1ms
Makes a big difference for the Index @144Hz on the vive driver.
Still somewhat choppy on survive driver - prediction should solve it.
Main-author: Christoph Haag <christoph.haag@collabora.com>
Co-author: Jakob Bornecrantz <jakob@collabora.com>
