GLCULFACE(3G)                                                  GLCULFACE(3G)



NAME
       glCullFace - specify whether front- or back-facing facets can be culled


C SPECIFICATION
       void glCullFace( GLenum mode )


PARAMETERS
       mode  Specifies whether front- or back-facing facets are candidates for
             culling.     Symbolic    constants    GLFRONT,    GLBACK,   and
             GLFRONTANDBACK are accepted.  The initial value is GLBACK.

DESCRIPTION
       glCullFace specifies whether front- or back-facing  facets  are  culled
       (as  specified by mode) when facet culling is enabled. Facet culling is
       initially disabled.  To enable and  disable  facet  culling,  call  the
       glEnable and glDisable commands with the argument GLCULFACE.  Facets
       include triangles, quadrilaterals, polygons, and rectangles.

       glFrontFace specifies  which  of  the  clockwise  and  counterclockwise
       facets are front-facing and back-facing.  See glFrontFace.

NOTES
       If   mode  is  GLFRONTANDBACK, no facets are drawn, but other primi-
       tives such as points and lines are drawn.

ERORS
       GLINVALIDENUM is generated if mode is not an accepted value.

       GLINVALIDOPERATION is generated if glCullFace is executed between the
       execution of glBegin and the corresponding execution of glEnd.

ASOCIATED GETS
       glIsEnabled with argument GLCULFACE
       glGet with argument GLCULFACEMODE

SEE ALSO
       glEnable, glFrontFace



                                                                GLCULFACE(3G)