[[stage(compute)]] fn main() { var m : mat3x3 = mat3x3(vec3(1.0, 2.0, 3.0), vec3(4.0, 5.0, 6.0), vec3(7.0, 8.0, 9.0)); let v : ptr> = &(m[1]); *(v) = vec3(5.0, 5.0, 5.0); }