QueryPerformanceCounter Performance

You should probably just call it once per frame.
And set up a delta-time for the frame, not a delta-time per object.

I agree with KulSeran. While I don't think the calls will hurt performance, its just really bad practice.

I'd advise wrapping it into a global timer class or something, that'll only actually call QueryPerformanceCounter every frame. The performance shouldn't be too bad, but it's best to avoid calling it too often.

EDIT: Waaay too late [smile]

Thanx, i will try to change my Timer class a little and i will tell you a fps performance results.

Quote:

Original post by UBrothers this is not really a DirectX question

Seems you've got an answer now, so no point in moving it... but in future, general (Windows) API and programming questions are more suited to General Programming or possibly Game Programming [smile].

Cheers,
Jack

Hey

Performance Counters are very precise, but the precision comes at a quite high cost. Querying the timer too often will hurt performance. If you really need to do lots of queries, you should try looking at RDTSC.
More information on timer performance can be found here:
http://www.nvidia.com/object/timer_function_performance.html

Edit: If your really using this for animation of objects, you should do what the first replyers suggested. If you need further timing functions ( say for an in-game profiler or anything similar ), it may be worth looking at RDTSC etc.