extern int vid_hidden;
extern int vid_activewindow;
-extern int vid_allowhwgamma;
-extern int vid_hardwaregammasupported;
+extern cvar_t vid_hardwaregammasupported;
extern int vid_usinghwgamma;
extern cvar_t vid_fullscreen;
extern cvar_t vid_height;
extern cvar_t vid_bitsperpixel;
extern cvar_t vid_mouse;
-extern cvar_t vid_stencil;
extern cvar_t v_gamma;
extern cvar_t v_contrast;
extern cvar_t v_color_white_r;
extern cvar_t v_color_white_g;
extern cvar_t v_color_white_b;
-extern cvar_t v_overbrightbits;
extern cvar_t v_hwgamma;
extern int gl_stencil;