This commit is a band aid until a more proper room setup is implemented.
It allows moving the tracking offset for the device roles head, left and right by a fixed value.
A y tracking offset OXR_TRACKING_ORIGIN_OFFSET_Y=1.0 would tell monado that the current tracking
origin is 1 meter above the desired tracking origin, e.g. when the headset was calibrated to a
(0,0,0) position while sitting on table 1 meter above the floor.
This environment variable affects STAGE space, but not LOCAL space.
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>
