[pixel shader]
float myfunc()
{
    return 0.6;
}
static float a = myfunc() + 0.2;
static float b;
static const float c;
float4 main() : sv_target
{
    return float4(a, b, c, 0);
}

[test]
draw quad
todo probe all rgba (0.8, 0.0, 0.0, 0.0)


[pixel shader fail]
static uint i;

float4 main() : sv_target
{
    return 1 / i;
}


[pixel shader]
static struct
{
    float4 x;
    float4 y;
} x;

float4 main() : sv_target
{
    return 0;
}


[pixel shader]
static struct
{
    float4 x;
    float3 y;
} x;

float4 main() : sv_target
{
    return float4(1, 2, 3, 4) + x.x;
}

[test]
draw quad
probe all rgba (1.0, 2.0, 3.0, 4.0)