Function gluBuild3DMipmapLevels 

pub unsafe extern "C" fn gluBuild3DMipmapLevels(
    target: GLenum,
    internalFormat: GLint,
    width: GLsizei,
    height: GLsizei,
    depth: GLsizei,
    format: GLenum,
    type_: GLenum,
    level: GLint,
    base: GLint,
    max: GLint,
    data: *const c_void,
) -> GLint