[pixel shader]
float4 main(uniform float4 u) : sv_target
{
    return round(u);
}

[test]
uniform 0 float4 -0.5 6.5 7.5 3.4
draw quad
probe all rgba (0.0, 6.0, 8.0, 3.0) 4



[pixel shader]
float4 main(uniform float4 u) : sv_target
{
    float a = round(u.r);
    int2 b = round(u.gb);
    float4 res = float4(b, a, u.a);
    return round(res);
}

[test]
uniform 0 float4 -0.5 6.5 7.5 3.4
draw quad
probe all rgba (6.0, 8.0, 0.0, 3.0) 4