Add query functions for whether certain features are supported

[libs/vr.git] / source / system.h

diff --git a/source/system.h b/source/system.h
index f7e28b587ec7f1cfd869864b136e059ee658d9c2..69b93a15d3220a02abcaf38d52440ffcea7eaaab 100644 (file)
--- a/source/system.h
+++ b/source/system.h
@@ -24,7 +24,9 @@ public:
 
        virtual void configure_window(Graphics::Window &) const = 0;
        virtual void configure_view(StereoView &) const = 0;
 
        virtual void configure_window(Graphics::Window &) const = 0;
        virtual void configure_view(StereoView &) const = 0;

-       virtual void set_absolute_tracking(bool) = 0;
+       virtual bool is_absolute_tracking_supported() const { return false; }
+       virtual void set_absolute_tracking(bool);
+       virtual bool get_absolute_tracking() const { return false; }

        virtual HeadTrackingCamera *create_camera(const GL::Camera &) = 0;
        virtual StereoCombiner *create_combiner(GL::View &) = 0;
 };
        virtual HeadTrackingCamera *create_camera(const GL::Camera &) = 0;
        virtual StereoCombiner *create_combiner(GL::View &) = 0;
 };