pixelmap(3G)							  pixelmap(3G)

NAME    [Toc]    [Back]

     pixelmap -	 define	pixel transfer LUTs

C SPECIFICATION    [Toc]    [Back]

     void pixelmap(int map, int	size, unsigned short *values)

PARAMETERS    [Toc]    [Back]

     map   specifies a symbolic	map name. Must be one of the following:
	   MAP_I_TO_I,
	   MAP_I_TO_R, MAP_I_TO_G, MAP_I_TO_B, MAP_I_TO_A,
	   MAP_R_TO_R, MAP_G_TO_G, MAP_B_TO_B, MAP_A_TO_A

     size  expects the size of the map,	valid sizes are	256 or 4096.

     values
	   the LUT itself.

DESCRIPTION    [Toc]    [Back]

     The operation of lrectwrite and rectcopy can be mapped through lookup
     tables.  The function pixeltransfer() enables this	functionality.	The
     function pixelmap() defines the lookup tables.  The source	pixels in the
     range [0.,1.]  map	into the range [0.,size).  Each	entry in the table is
     16	bits, where full intensity is 0xffff and no intensity is 0x0.

SEE ALSO    [Toc]    [Back]

     pixelmap,pixeltransfer,convolve

NOTES    [Toc]    [Back]

     pixelmap only works on RealityEngine systems running 5.0.1	or greater.
     It	requires that the pixelzoom factors are	both 1.0.


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