swapbu(3G)swapbu(3G)NAMEswapbu - exchanges the front and back buffers of the normal framebuffer
FORTRAN SPECIFICATION
subroutine swapbuPARAMETERS
none
DESCRIPTIONswapbu causes the front and back buffers of the normal framebuffer to be
exchanged during the next vertical retrace period. Once an image is
fully drawn in the back buffer, swapbu displays it. swapbu is ignored
when the normal framebuffer is in single buffer mode. It has no effect
on the overlay, underlay, or popup framebuffers, regardless of the
current draw mode.
To swap overlay or underlay buffers, or to swap buffers in more than one
framebuffer simultaneously, you must use mswapb.
SEE ALSO
double, drawmo, mswapb, swapin
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