I would guess that means you probably passed SM5 for the feature level? I don’t know much about the rendering side of things, but I think in general you will want to pass SM4 if you don’t require specific rendering capabilities. If building for mobile, you may need to pay further attention to this, not sure.
Edit: Anyone know about this stuff? From the enum, maybe ES2 essentially means ‘lowest feature level’, and you can use that as a baseline even if not targetting mobile? Seems a little strange that they made this a requirement for a bunch of rendering related types, but didn’t create something like a ‘BaseLevel’ entry in the enum corresponding to the behaviour before when the types didn’t require this argument.