uniform half4 a, b;
uniform uint2 c, d;
uniform int3 e, f;
void main() {
    sk_FragColor.x = lessThan(a, b).x ? 1 : 0;
    sk_FragColor.y = lessThan(c, d).y ? 1 : 0;
    sk_FragColor.z = lessThan(e, f).z ? 1 : 0;
}