Added a "nothing" filter to the FilterShowcase demo to get a baseline for performance.  Benchmarking will no only reset when you start or stop interacting with the slider on a filter in the filter showcase (instead of any time the value changes) (this allows you get get frame time averages while modifying the slider).
Merge branch 'master' into filtergroup-targets-fix

* master:
  Added a "nothing" filter to the FilterShowcase demo to get a baseline for performance.  Benchmarking will no only reset when you start or stop interacting with the slider on a filter in the filter showcase (instead of any time the value changes) (this allows you get get frame time averages while modifying the slider).