2 int init_ovr(int multisampling);
4 void begin_render_ovr(void);
5 void begin_render_ovr_eye(int eye);
6 void end_render_ovr_eye(int eye);
7 void end_render_ovr(void);
8 void render_mirror_ovr(int view_width, int view_height);
9 void normalize_observer_ovr(void);