Returns a UI-wide profiler that records UI performance, as long as Dplug_ProfileUI version is
defined. Else, it is a null IProfiler that forgets everything.
For performance purpose, it is recommended:
1. not to record profile if Dplug_ProfileUI is not defined,
2. and undefine Dplug_ProfileUI if you're not looking for a bottleneck.
Returns a UI-wide profiler that records UI performance, as long as Dplug_ProfileUI version is defined. Else, it is a null IProfiler that forgets everything. For performance purpose, it is recommended: 1. not to record profile if Dplug_ProfileUI is not defined, 2. and undefine Dplug_ProfileUI if you're not looking for a bottleneck.