NAME

doublebuffer − sets the display mode to double buffer mode

SPECIFICATION

C
doublebuffer()

FORTRAN
subroutine double

Pascal
procedure doublebuffer;

DESCRIPTION

doublebuffer sets the display mode to double buffer mode.  It does not take effect until gconfig is called.  In double buffer mode, the bitplanes are partitioned into two groups, the front bitplanes and the back bitplanes.  Double buffer mode displays only the front bitplanes.  Drawing routines normally update only the back bitplanes; frontbuffer and backbuffer can override the default. 

gconfig sets frontbuffer = FALSE (0) and backbuffer = TRUE (1) in double buffer mode. 

SEE ALSO

backbuffer, frontbuffer, gconfig, getbuffer, getdisplaymode, RGBmode, singlebuffer, swapbuffers Programming Guide, Section 6.1, Display Modes

NOTE

This routine is available only in immediate mode. 

Version 3.6  —  December 20, 1987