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       gl_enablepageflipping - enables automatic page flipping


       #include <vgagl.h>

       int gl_enablepageflipping(GraphicsContext *gc);


       Enable  page  flipping  or  triple buffering in gl_copyscreen(3) if the
       physical context gc can do it.

       Returns 3 if triple buffering will be used, 2 for page flipping,  0  if
       page flipping is not possible (due to video memory/mode limitations).

       When  pageflipping  is  enabled,  the  gl_screenoffset(3) is ignored in

       The idea is that you draw your picture in gc and copy it to the  screen
       by consecutive gl_copyscreen(3) calls. Each of these will choose a free
       buffer in the screen and adjust the display start accourdingly.

       The current context must by the VGA when gl_copyscreen(3) is called  in
       this situation.


       svgalib(7),   vgagl(7),   svgalib.conf(5),   threedkit(7),   testgl(1),
       plane(1),   wrapdemo(1),    gl_copybox(3),    gl_copyboxfromcontext(3),
       gl_copyboxtocontext(3),  gl_copyscreen(3),  gl_getbox(3), gl_putbox(3),
       gl_setcontext(3),     gl_setcontextheight(3),      gl_setcontextvga(3),
       gl_setcontextvgavirtual(3),                    gl_setcontextvirtual(3),


       This manual page was edited  by  Michael  Weller  <eowmob@exp-math.uni->.  The  exact  source of the referenced demo as well as of the
       original documentation is unknown.

       It is very likely that both are at least to some extent are due to Harm
       Hanemaayer <>.

       Occasionally  this  might be wrong. I hereby asked to be excused by the
       original author and will happily accept any additions or corrections to
       this first version of the svgalib manual.