public static BlendMode ParseBlendMode(string value)
{
switch (value)
{
case "add":
return BlendMode.Add;
case "multiply":
return BlendMode.Multiply;
case "none":
return BlendMode.None;
case "screen":
return BlendMode.Screen;
case "erase":
return BlendMode.Erase;
default:
return BlendMode.Normal;
}
}