getminmax(3G)							 getminmax(3G)

NAME    [Toc]    [Back]

     getminmax -  gets data computed by	minmax

C SPECIFICATION    [Toc]    [Back]

     void getminmax(float *minmax)

PARAMETERS    [Toc]    [Back]

     minmax   is the destination for the minmax	data specified with minmax.
	      Minmax must have at least	2 x (number of components per pixel)
	      elements.

DESCRIPTION    [Toc]    [Back]

     getminmax returns the minimum and maximum values from the graphics	system
     to	the CPU	memory.	The ordering of	the components within the array	is
     determined	by pixmode(PM_INPUT_FORMAT,format).  For example, for format
     of	PM_RGB,	the returned float array looks like {red_min, red_max,
     green_min,	green_max, blue_min, blue_max}.	 Note that this	is
     inconsistent with gethistogram.  The returned minimum and maximum values
     may be negative and positive infinity if no pixel transfer	operation
     occured after a MINMAX_INIT.  The returned	values are always floating
     point values regardless of	input types.

SEE ALSO    [Toc]    [Back]

     histogram minmax gethistogram pixeltransfer pixelmap pixmode

NOTES    [Toc]    [Back]

     getminmax only works on RealityEngine systems running 5.0.1 or greater.


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