float StepAntiAliasing(float x, float y)
{
    float v = x - y;
    return saturate(v / (fwidth(v)+HALF_MIN));//fwidth(x) = abs(ddx(x) + ddy(x))
}

float Remap(float In, float2 InMinMax, float2 OutMinMax)
{
    return OutMinMax.x + (In - InMinMax.x) * (OutMinMax.y - OutMinMax.x) / (InMinMax.y - InMinMax.x);
}

float3 ToonMaping(float3 x) 
{
    x = x * (2.51 * x + 0.03) / (x * (2.43 * x + 0.59) + 0.14);
    return x;
}

float3 GetSmoothedWorldNormal(float2 uv, float3x3 t_tbn)
{
    float3 normal = float3(uv, 0);
    normal.z = sqrt(1.0 - saturate(dot(normal.xy, normal.xy)));
    return mul(normal, t_tbn);
}