doublebuf(3g) — 4D1 2.0



     doublebuffer(3G)                                 doublebuffer(3G)



     NAME

          doublebuffer - sets the display mode to double buffer mode


     SPECIFICATION

          C         doublebuffer()




          FORTRAN   subroutine double


     DESCRIPTION

          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 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 6.3, Double Buffer Mode


     NOTE

          This routine is available only in immediate mode.


























     Page 1                                          (printed 8/20/87)
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