[pixel shader]
uniform float2 u;

float4 main() : sv_target
{
    return float4(saturate(u), saturate(u.x + 0.5), saturate(-1.2));
}

[test]
uniform 0 float4 0.7 -0.1 0.0 0.0
todo(msl) draw quad
probe (0, 0) rgba (0.7, 0.0, 1.0, 0.0)

[pixel shader]
uniform float4 u;

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

[test]
uniform 0 float4 -2 0 2 -1
todo(msl) draw quad
probe (0, 0) rgba (0.0, 0.0, 1.0, 0.0)