layout(binding=123) uniform testBlock {
    layout (offset=0)  float s;
    layout (offset=16) float2x2 m;
    layout (offset=48) float a[2];
    layout (offset=80) float2x2 am[2];
} test[2];

void main() {
    sk_FragColor = half4(test[0].s, test[1].m[1][0], test[0].a[1], test[1].am[1][0][1]);
}