VRDevice traits for blogpost

VRDevice.rs

pub trait VRDevice: Send + Sync {
    
    // Returns unique device identifier.
    fn device_id(&self) -> u64;

    // Returns the current display data.
    fn display_data(&self) -> VRDisplayData;

    // Returns the inmediate VRFrameData of the HMD.
    // Should be used when not presenting to the device.
    fn inmediate_frame_data(&self, near_z: f64, far_z: f64) -> VRFrameData;

    // Returns the synced VRFrameData to render the current frame.
    // Should be used when presenting to the device.
    // sync_poses must have been called before this call.
    fn synced_frame_data(&self, next: f64, far_z: f64) -> VRFrameData;

    // Resets the pose for this display.
    fn reset_pose(&mut self);

    // Synchronization point to keep in step with the HMD.
    // Must be called in the render thread, before doing any work.
    fn sync_poses(&mut self);

    // Submits frame to the display.
    // Must be called in the render thread.
    fn submit_frame(&mut self, layer: &VRLayer);
}