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glCullFace

Chapter 3

glCullFace

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 GL_FRONT, GL_BACK, and

GL_FRONT_AND_BACK are accepted. The initial value is GL_BACK.

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

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

If mode is GL_FRONT_AND_BACK, no facets are drawn, but other primitives such as

points and lines are drawn.

Errors

• 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

glIsEnabled with argument GL_CULL_FACE

glGet with argument GL_CULL_FACE_MODE

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