Cullface

The CullFace function specifies whether front- or back-facing facets can be culled.

CullFace( mode );

Arguments                                mode

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

For example, the call:

gldraw {

enable(GL_CULL_FACE);

cullface(GL_BACK);

}

causes the back faces not to be rendered, perhaps speeding up drawing.

The call:

gldraw {

disable(GL_CULL_FACE);

}

returns to the default rendering mode, where faces are not culled.

Remarks

The CullFace function specifies whether front- or back-facing facets are culled (as specified by mode) when facet culling is enabled. You enable and disable facet culling using Enable and Disable with the argument GL_CULL_FACE. Facets include triangles, quadrilaterals, polygons, and rectangles.

Note:  Do not call CullFace between a call to Begin and the corresponding call to End.

See Also

Begin

Disable

Enable

End