out vec4 sk_FragColor;
struct A {
int x;
int y;
};
A a1;
struct B {
float x;
float y[2];
A z;
B b1;
void main() {
a1.x = 0;
b1.x = 0.0;
sk_FragColor.x = float(a1.x) + b1.x;
}