pub unsafe extern "C" fn graphene_matrix_init_look_at(
m: *mut graphene_matrix_t,
eye: *const graphene_vec3_t,
center: *const graphene_vec3_t,
up: *const graphene_vec3_t,
) -> *mut graphene_matrix_t
pub unsafe extern "C" fn graphene_matrix_init_look_at(
m: *mut graphene_matrix_t,
eye: *const graphene_vec3_t,
center: *const graphene_vec3_t,
up: *const graphene_vec3_t,
) -> *mut graphene_matrix_t