Hey guys I have been recently playing around with rendering abstraction and the way I have it set up right now is my rendering code is hidden behind a common interface with all the rendering code behind a DLL that are dynamicaly linked to the application. The main application will get a pointer to a rendering window and then can manipulate it from there. My question is why am I getting a CPU usage of 0? All my application is doing right now is running a message pump and using the pointers to the rendering windows to clear them to blue but I would expect there to be CPU usage, is any work done with DLLs not reflected in the appliactions CPU usage and instead in System Idle Process? The second I turn off my rendering code and just let the message pump do its thing I will see 99% usage. I am guessing this is the reason but why they would do it that way doesnt make sense to me. Also the last question I have is how much of a hit performance wise do you take from calling interfaces that are behind a DLL? From what I understand its slight. Thanks