swapin(3G)

NAME
     swapin - defines a minimum time between buffer swaps

FORTRAN 77 SPECIFICATION
     subroutine swapin(i)
     integer*4 i

PARAMETERS
     i   expects the number of retraces to wait before swapping the front and
         back buffers.  The default interval is 1.

DESCRIPTION
     swapin defines a minimum number of retraces between buffer swaps.  For
     example, for a swap interval of 5, the system refreshes the screen at
     least five times between successive buffer swaps. swapin changes frames
     at a steady rate if a new image can be created within one swap interval.

     Like the swapbu and mswapb commands that it affects, swapin is ignored by
     framebuffers in single buffer mode.

     A single swap interval counter is shared by the normal, overlay, and
     underlay framebuffers.  The interval is enforced between all buffer swap
     requests, regardless of which framebuffers are swapped.

SEE ALSO
     double, drawmo, mswapb, swapbu

NOTE
     This routine is available only in immediate mode.