glCullFace man page on DigitalUNIX

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glCullFace(3G)							glCullFace(3G)

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

       void glCullFace(
	       GLenum mode );

       Specifies  whether  front-  or  back-facing  facets  are candidates for
       culling. Symbolic constants GL_FRONT,  GL_BACK,	and  GL_FRONT_AND_BACK
       are accepted. The initial value is GL_BACK.

       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 glEn‐
       able() and glDisable() commands with the argument GL_CULL_FACE.	Facets
       include triangles, quadrilaterals, polygons, and rectangles.

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

       If mode is GL_FRONT_AND_BACK, no facets are drawn, but other primitives
       such as points and lines are drawn.

       GL_INVALID_ENUM is generated if mode is not an accepted value.

       GL_INVALID_OPERATION  is	 generated if glCullFace() is executed between
       the execution of glBegin() and the corresponding execution of glEnd().

       glIsEnabled() with argument GL_CULL_FACE
       glGet() with argument GL_CULL_FACE_MODE

       glEnable(3), glFrontFace(3)


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