uniform half4 colorGreen, colorRed;
half3x3 a, b;
float4x4 c, d;

void main() {
    half2x2 h22 = matrixCompMult(half2x2(5, 5, 5, 5), half2x2(0, 1, 2, 3));
    half4x4 h44 = matrixCompMult(half4x4(0.5), half4x4(1, 2, 3, 4,
                                                       5, 6, 7, 8,
                                                       9, 10,11,12,
                                                       13,14,15,16));
    float4x3 f43 = matrixCompMult(float4x3(1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12),
                                  float4x3(12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1));
    sk_FragColor.xyz = matrixCompMult(a, b)[0];
    sk_FragColor = half4(matrixCompMult(c, d)[0]);
    sk_FragColor = (h22 == half2x2(0, 5, 10, 15) &&
                    h44 == half4x4(0.5, 0, 0, 0, 0, 3, 0, 0, 0, 0, 5.5, 0, 0, 0, 0, 8) &&
                    f43 == float4x3(12, 22, 30, 36, 40, 42, 42, 40, 36, 30, 22, 12)) ? colorGreen
                                                                                     : colorRed;
}