NAME

doublebuffer − sets the display mode to double buffer mode

SPECIFICATION

C
doublebuffer()

FORTRAN
subroutine double

Pascal
procedure doublebuffer;

DESCRIPTION

The IRIS has three display modes: single buffer, double buffer, and RGB.  doublebuffer sets the display mode to double buffer mode.  It does not take effect until you call gconfig.  In double buffer mode, the bitplanes are partitioned into two groups, the front bitplane and the back bitplane.  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 IRIS Graphics Programming, Section 6.1, Display Modes

NOTE

This routine is available only in immediate mode. 

Version 2.5  —  April 22, 1987