layout(set = 0, binding = 0) sampler2D aSampler;
layout(set = 0, binding = 1) sampler2D aSecondSampler;
layout(set = 0, binding = 2) sampler2D aThirdSampler;

noinline half4 baz(sampler2D s) {
    return sample(s, float2(0));
}

noinline half4 bar(sampler2D s) {
    return baz(s);
}

noinline half4 foo(sampler2D samplerA, sampler2D samplerB) {
    half4 a = bar(samplerA);
    half4 b = baz(samplerB);
    return a + b;
}

void main() {
    // foo_aSampler_aSecondSampler
    //   | -> bar_aSampler -> baz_aSampler
    //   | -> baz_aSecondSampler
    sk_FragColor = foo(aSampler, aSecondSampler);

    // bar_aThirdSampler -> baz_aThirdSampler
    sk_FragColor = bar(aThirdSampler);

    // foo_aSecondSampler_aThirdSampler
    //   | -> bar_aSecondSampler -> baz_aSecondSampler
    //   | -> baz_aThirdSampler
    sk_FragColor = foo(aSecondSampler, aThirdSampler);
}