resources/sksl/glsl/BuiltinVariableSetup.sksl

/*#pragma settings CannotUseFragCoord*/

noinline float4 func1() {
    return sk_Clockwise ? sk_FragCoord : half4(0);
}

noinline float4 func2() {
    return sk_Clockwise ? half4(0) : sk_FragCoord;
}

void main() {
    sk_FragColor = half4(func1() + func2());
}