PARAMETERS
       mode  Specifies  the  orientation  of  front-facing polygons.  GL_CW and
             GL_CCW are accepted.  The initial value is GL_CCW.

DESCRIPTION
       In a scene composed entirely  of  opaque  closed  surfaces,  back-facing
       polygons  are  never  visible.  Eliminating these invisible polygons has
       the obvious benefit of speeding up the rendering of the image.   To  en‐
       able  and disable elimination of back-facing polygons, call glEnable and
       glDisable with argument GL_CULL_FACE.

       The projection of a polygon to window coordinates is said to have clock‐
       wise  winding  if  an imaginary object following the path from its first
       vertex, its second vertex, and so on, to its last  vertex,  and  finally
       back to its first vertex, moves in a clockwise direction about the inte‐
       rior of the polygon.  The polygon's winding is said to be  counterclock‐
       wise if the imaginary object following the same path moves in a counter‐
       clockwise direction about the  interior  of  the  polygon.   glFrontFace
       specifies whether polygons with clockwise winding in window coordinates,
       or counterclockwise winding in  window  coordinates,  are  taken  to  be
       front-facing.   Passing GL_CCW to mode selects counterclockwise polygons
       as front-facing; GL_CW selects clockwise polygons as  front-facing.   By
       default, counterclockwise polygons are taken to be front-facing.

ERRORS
       GL_INVALID_ENUM is generated if mode is not an accepted value.

       GL_INVALID_OPERATION is generated if glFrontFace is executed between the
       execution of glBegin and the corresponding execution of glEnd.

ASSOCIATED GETS
       glGet with argument GL_FRONT_FACE

SEE ALSO
       glCullFace, glLightModel

                                                                GLFRONTFACE(3G)