Hi all, I have a somewhat irritating error in Vista (and to a lesser degree Windows XP).
I'm using OSG 2.6.1 to render a viewport in an MFC application (built in Visual Studio 2005 SP1). I'm running in single-threaded mode (although I have tried multithreaded also without any luck). I'm manually calling frame when I want the viewport to be updated rather than using run(), as I don't want to waste cpu/gpu on redrawing a stationary viewport. My problem is that when I have a somewhat complex model loaded, the cpu-load on the single core sometimes spikes out at maximum load when doing updates fast (such as during a fast drag). When this happens the machine often freezes the OSG viewport (and the cpu load continues at maximum for a single core). In Vista I have to terminate the application, but in Windows XP I can change focus to another application window and the viewport returns to normal (0% cpu load) when I switch back to my application. I'm all out of ideas as to exactly why this happens, as I don't completely understand if I'm allowed to call frame() rapidly or not. I'm looking for a function which can tell me if the previous frame() has completed, in order to not call a new frame() before the previous is done. I don't believe this should be necessary, but I have obviously done something to offend OSG :) Any ideas or insights will be much appreciated. regards, and thanks in advance. Jesper D. Thomsen
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