@group(0) @binding(0) var<uniform> u : array<mat3x3<f32>, 4>;
@group(0) @binding(1) var<storage, read_write> s: f32;

@compute @workgroup_size(1)
fn f() {
    let t = transpose(u[2]);
    let l = length(u[0][1].zxy);
    let a = abs(u[0][1].zxy.x);

    s = t[0].x + f32(l) + f32(a);
}