On 12 Aug 2009, at 22:20, David Robillard wrote:
    Though in the latter case, it's probably best to
just instantiate
 the
 thing twice as hosts currently do (and will likely need to implement
 regardless).
 
 Or ganging the control ports? 
 
 You could, but if the whole plugin including controls is going to
 replicate there's little benefit to replication.  Maybe some
 efficiency...
 It's the plugin author's decision, really, but the "replicate audio
 but
 single set of controls" is the 99% case. 
 
Yes, most importantly it lets you handle the cases that the host can't
eg. multichannel compression. I guess reverb would be another example,
but I don't know how multichannel reverb works.
In that situation, offering per-channel controls makes no sense.
- Steve