sksl/shared/WhileLoopControlFlow.glsl

out vec4 sk_FragColor;
vec4 main() {
    vec4 x = vec4(1.0);
    while (x.w == 1.0) {
        x.x -= 0.25;
        if (x.x <= 0.0) break;
    }
    while (x.z > 0.0) {
        x.z -= 0.25;
        if (x.w == 1.0) continue;
        x.y = 0.0;
    }
    return x;
}