[pixel shader]
float4 main(uniform float2 u) : sv_target
{
    return float4(max(u.x, u.y), max(2, 2.1), max(true, 2), max(-1, -1));
}

[test]
uniform 0 float4 0.7 -0.1 0.0 0.0
draw quad
probe all rgba (0.7, 2.1, 2.0, -1.0)

[pixel shader]
float4 main(uniform float4 u) : sv_target
{
    float3 a = float3(-0.1, 0.2, 0.3);

    return float4(max(u.xy, u.zw), max(a, u.xy));
}

[test]
uniform 0 float4 0.7 -0.1 0.4 0.8
draw quad
probe all rgba (0.7, 0.8, 0.7, 0.2)