void main() {
    sk_FragColor.x = float2x2(float2(1.0, 0.0), float2(0.0, 1.0)) ==
                     float2x2(float2(1.0, 0.0), float2(0.0, 1.0)) ? 1 : -1;
    sk_FragColor.x = float2x2(float2(1.0, 0.0), float2(1.0, 1.0)) ==
                     float2x2(float2(1.0, 0.0), float2(0.0, 1.0)) ? 2 : -2;
    sk_FragColor.x = float2x2(1) == float2x2(1) ? 3 : -3;
    sk_FragColor.x = float2x2(1) == float2x2(0) ? 4 : -4;
    sk_FragColor.x = float2x2(1) == float2x2(float2(1.0, 0.0), float2(0.0, 1.0)) ? 5 : -5;
    sk_FragColor.x = float2x2(2) == float2x2(float2(1.0, 0.0), float2(0.0, 1.0)) ? 6 : -6;
    sk_FragColor.x = float3x2(2)
                        == float3x2(float2(2.0, 0.0), float2(0.0, 2.0), float2(0.0)) ? 7 : -7;
    sk_FragColor.x = float2x2(1) != float2x2(1) ? 8 : -8;
    sk_FragColor.x = float2x2(1) != float2x2(0) ? 9 : -9;
    sk_FragColor.x = 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)) ? 10 : -10;
    sk_FragColor.x = float2x2(float3x3(1.0)) == float2x2(1.0) ? 11 : -11;
    sk_FragColor.x = float2x2(float4(1.0, 0.0, 0.0, 1.0)) == float2x2(1.0) ? 12 : -12;
    sk_FragColor.x = float2x2(1.0, 0.0, float2(0.0, 1.0)) == float2x2(1.0) ? 13 : -13;
    sk_FragColor.x = float2x2(float2(1.0, 0.0), 0.0, 1.0) == float2x2(1.0) ? 14 : -14;
}