extern cvar_t gl_combine;
-extern int gl_maxdrawrangeelementsvertices;
-extern int gl_maxdrawrangeelementsindices;
-
extern void (GLAPIENTRY *qglClearColor)(GLclampf red, GLclampf green, GLclampf blue, GLclampf alpha);
extern void (GLAPIENTRY *qglClear)(GLbitfield mask);