gl_enablepageflipping(3)					Svgalib User Manual					  gl_enablepageflipping(3)

NAME

       gl_enablepageflipping - enables automatic page flipping

SYNOPSIS

       #include <vgagl.h>

       int gl_enablepageflipping(GraphicsContext *gc);

DESCRIPTION

       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 gl_copyscreen(3).

       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.

SEE ALSO

       svgalib(7), vgagl(7), svgalib.conf(5), threedkit(7), testgl(1), plane(1), wrapdemo(1), gl_copybox(3), gl_copyboxfromcontext(3), gl_copybox-
       tocontext(3),  gl_copyscreen(3), gl_getbox(3), gl_putbox(3), gl_setcontext(3), gl_setcontextheight(3), gl_setcontextvga(3), gl_setcontextv-
       gavirtual(3), gl_setcontextvirtual(3), gl_setcontextwidth(3).

AUTHOR

       This manual page was edited by Michael Weller <eowmob@exp-math.uni-essen.de>. 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 <H.Hanemaayer@inter.nl.net>.

       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.

Svgalib (>;= 1.2.11)						    2 Aug 1997						  gl_enablepageflipping(3)