sclear(3G)

NAME
     sclear - clear the stencil planes to a specified value

FORTRAN SPECIFICATION
     subroutine sclear(sval)
     integer*4 sval

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

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

SEE ALSO
     stensi, swrite

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

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