glCullFace(3G)		       OpenGL Reference			glCullFace(3G)

NAME    [Toc]    [Back]

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

C SPECIFICATION    [Toc]    [Back]

     void glCullFace( GLenum mode )

PARAMETERS    [Toc]    [Back]

     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.

DESCRIPTION    [Toc]    [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
     glEnable 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.

NOTES    [Toc]    [Back]

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

ERRORS    [Toc]    [Back]

     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.

ASSOCIATED GETS    [Toc]    [Back]

     glIsEnabled with argument GL_CULL_FACE
     glGet with	argument GL_CULL_FACE_MODE

SEE ALSO    [Toc]    [Back]

     glEnable, glFrontFace


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