uniform half4 colorGreen, colorRed;

uniform half h;
uniform float f;

half4 main() {
    bool ok = true;
    ok = ok && float2x2(2) * float2(f) == float2(2 * f);
    ok = ok && half4x4(2) * half4(h) == half4(2 * h);
    return ok ? colorGreen : colorRed;
}