[pixel shader]
uniform float4 u;

float4 main() : sv_target
{
    return round(u);
}

[test]
uniform 0 float4 -0.4 -6.6 7.6 3.4
draw quad
probe all rgba (0.0, -7.0, 8.0, 3.0) 4



[pixel shader todo(sm<4)]
uniform float4 u;

float4 main() : 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 -0.4 -6.6 7.6 3.4
todo(sm<4) draw quad
probe all rgba (-7.0, 8.0, 0.0, 3.0) 4



[pixel shader todo(sm<4)]
uniform float4 u;

float4 main() : sv_target
{
    int4 i = u;
    return round(i);
}

[test]
uniform 0 float4 -1 0 2 10
todo(sm<4) draw quad
probe all rgba (-1.0, 0.0, 2.0, 10.0) 4