[pixel shader]
uniform float4 u;
uniform float4 v;

float4 main() : sv_target
{
    float4 res = float4(0, 0, 0, 0);
    res.xyz = cross(u, v);
    return res;
}

[test]
uniform 0 float4 1 -2 3 4
uniform 4 float4 10 100 1000 10000
draw quad
probe (0, 0) rgba (-2300, -970, 120, 0)



[pixel shader]
uniform float4 u;

float4 main() : sv_target
{
    float4 res = float4(0, 0, 0, 3.5);
    res.xyz = cross(u, 4);
    return res;
}

[test]
uniform 0 float4 1 -2 3 4
draw quad
probe (0, 0) rgba (-20, 8, 12, 3.5)