- virtual HeadTrackingCamera *create_camera(const GL::Camera &) const = 0;
- virtual StereoCombiner *create_combiner() const = 0;
-
- virtual void begin_frame() = 0;
- virtual void end_frame() = 0;
+ virtual HeadTrackingCamera *create_camera(const GL::Camera &) = 0;
+ virtual StereoCombiner *create_combiner(GL::View &) = 0;