pub unsafe extern "C" fn graphene_frustum_init_from_matrix(
f: *mut graphene_frustum_t,
matrix: *const graphene_matrix_t,
) -> *mut graphene_frustum_t
pub unsafe extern "C" fn graphene_frustum_init_from_matrix(
f: *mut graphene_frustum_t,
matrix: *const graphene_matrix_t,
) -> *mut graphene_frustum_t