pub unsafe extern "C" fn graphene_frustum_init(
f: *mut graphene_frustum_t,
p0: *const graphene_plane_t,
p1: *const graphene_plane_t,
p2: *const graphene_plane_t,
p3: *const graphene_plane_t,
p4: *const graphene_plane_t,
p5: *const graphene_plane_t,
) -> *mut graphene_frustum_t