void main() {
    float2x4 x = float2x4(1);
    float3x2 y = float3x2(1, 0, 0, 1, float2(2, 2));
    float3x4 z = x * y;
    float3 v1 = float3x3(1) * float3(2);
    float3 v2 = float3(2) * float3x3(1);
    sk_FragColor = half4(half(z[0].x), half3(v1 + v2));
}