VST and HiDPI

I’m finally getting around to implementing this in my host and just want some clarification:

  1. Is support of the IPlugViewContentScaleSupport interface enough to determine if the plugin supports content scaling, or do I need to check the return value of setContentScaleFactor() == kResultTrue

  2. Assuming I need to check the return value from setContentScaleFactor, can a plugin return different values for this based on the content scale passed to it? eg: support content scaling for some scale factors but not others.

Brad