uniform half4 colorRed, colorGreen;

bool test() {
    bool ok = true;
    ok = ok &&  (float2x2(float2(1.0, 0.0), float2(0.0, 1.0)) ==
                 float2x2(float2(1.0, 0.0), float2(0.0, 1.0)));
    ok = ok && !(float2x2(float2(1.0, 0.0), float2(1.0, 1.0)) ==
                 float2x2(float2(1.0, 0.0), float2(0.0, 1.0)));

    ok = ok &&  (float2x2(1) == float2x2(1));
    ok = ok && !(float2x2(1) == float2x2(0));

    ok = ok &&  (float2x2(1) == float2x2(float2(1.0, 0.0), float2(0.0, 1.0)));
    ok = ok && !(float2x2(2) == float2x2(float2(1.0, 0.0), float2(0.0, 1.0)));

    ok = ok && !(float2x2(1) != float2x2(1));
    ok = ok &&  (float2x2(1) != float2x2(0));
    ok = ok &&  (float3x3(float3(1.0, 0.0, 0.0), float3(0.0, 1.0, 0.0), float3(0.0, 0.0, 0.0)) ==
                 float3x3(float2x2(1.0)));
    ok = ok &&  (float2x2(float3x3(1.0)) == float2x2(1.0));
    ok = ok &&  (float2x2(float4(1.0, 0.0, 0.0, 1.0)) == float2x2(1.0));
    ok = ok &&  (float2x2(1.0, 0.0, float2(0.0, 1.0)) == float2x2(1.0));
    ok = ok &&  (float2x2(float2(1.0, 0.0), 0.0, 1.0) == float2x2(1.0));
    return ok;
}

half4 main() {
    return test() ? colorGreen : colorRed;
}