swapinterval(3G)					      swapinterval(3G)

NAME    [Toc]    [Back]

     swapinterval - defines a minimum time between buffer swaps

C SPECIFICATION    [Toc]    [Back]

     void swapinterval(i)
     short i;

PARAMETERS    [Toc]    [Back]

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

DESCRIPTION    [Toc]    [Back]

     swapinterval 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. swapinterval changes
     frames at a steady	rate if	a new image can	be created within one swap
     interval.

     Like the swapbuffers and mswapbuffers commands that it affects,
     swapinterval 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    [Toc]    [Back]

     doublebuffer, drawmode, mswapbuffers, swapbuffers

NOTE    [Toc]    [Back]

     This routine is available only in immediate mode.


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