Note: This feature is available in Web Workers.
The WebGLRenderingContext.cullFace() method of the WebGL API specifies whether or not front- and/or back-facing polygons can be culled.
cullFace(mode)modeA GLenum specifying whether front- or back-facing polygons are candidates for culling. The default value is gl.BACK. Possible values are:
gl.FRONTgl.BACKgl.FRONT_AND_BACKNone (undefined).
Polygon culling is disabled by default. To enable or disable culling, use the enable() and disable() methods with the argument gl.CULL_FACE.
gl.enable(gl.CULL_FACE);
gl.cullFace(gl.FRONT_AND_BACK);To check the current cull face mode, query the CULL_FACE_MODE constant.
gl.getParameter(gl.CULL_FACE_MODE) === gl.FRONT_AND_BACK;
// true