sclear(3G)							    sclear(3G)

NAME    [Toc]    [Back]

     sclear - clear the	stencil	planes to a specified value

C SPECIFICATION    [Toc]    [Back]

     void sclear(sval)
     unsigned long sval;

PARAMETERS    [Toc]    [Back]

     sval   expects the	integer	value that is to be written to every stencil
	    location

DESCRIPTION    [Toc]    [Back]

     sclear sets every pixel in	the currently allocated	stencil	buffer (see
     stensize) to sval,	the passed parameter.  This clearing operation is
     limited by	the current viewport and scrmask, and is masked	by the current
     swritemask. Current color is unchanged.  The polygon pattern, if any, is
     ignored.

SEE ALSO    [Toc]    [Back]

     stensize, swritemask

NOTES    [Toc]    [Back]

     IRIS-4D G,	GT, and	GTX models, Personal Iris, Indigo Entry, Indigo	XL,
     and Indy do not support stencil, and therefore also do not	support
     sclear.  Use getgdesc to determine	whether	stencil	is supported.

     Because only the normal framebuffer includes stencil resources, sclear
     should be called only while draw mode is NORMALDRAW.


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