- added a call calc_meshverts_ext_f2(void) which:

- projects vertices without clipping code (xs at 3200)
 - sets flag in editvert ( eve->f & 2) when it is not visible

general note: that flag is only valid after the calc_meshverts_ext_f2
call. it is a free flag. be aware that selection
is stored in bit 1 (eve->f & 1)

source/blender/include/BDR_drawobject.h

@@ -52,6 +52,7 @@ void drawcamera(struct Object *ob);
 void calc_lattverts_ext(void);
 void calc_meshverts(void);
 void calc_meshverts_ext(void);
+void calc_meshverts_ext_f2(void);
 void calc_nurbverts_ext(void);
 void tekenvertices(short sel);
 void tekenvertices_ext(int mode);