[pixel shader]
float4 main() : sv_target
{
    float a = 2.0, b = a + 1.0, c = b;

    return float4(a, b, c, 0);
}

[test]
todo(msl) draw quad
probe (0, 0) rgba (2, 3, 3, 0)


[pixel shader fail]
float4 main() : sv_target
{
    float a = 2.0, b = c + 1.0, c = b;

    return float4(0);
}


[pixel shader]
float4 main() : sv_target
{
    struct apple {
        float a;
        int b;
    } apple1 = {7.2, 8.1}, apple2 = apple1;

    return float4(apple1.a, apple1.b, apple2.a, apple2.b);
}

[test]
todo(msl) draw quad
probe (0, 0) rgba (7.2, 8.0, 7.2, 8.0)


[pixel shader]
float4 main() : sv_target
{
    struct apple {
        float a;
        int b;
    } apple1 = {5.2, 9.1}, apples[2] = {apple1, apple1};

    return float4(apples[0].a, apples[0].b, apples[1].a, apples[1].b);
}

[test]
todo(msl) draw quad
probe (0, 0) rgba (5.2, 9.0, 5.2, 9.0)