Hi guys I have a vague question for you. I'm developing some software using OSG on windows and Mac. It's an augmented reality application using ARToolkit. It was originally made for windows (on which the performance is excellent) and was recently ported to Mac. The code is exactly the same with the exception of the camera capture code.
My problem is, is that performance on OS X is terrible compared to windows and I'm trying to track down why. Using the openGL profiler that comes with xcode I have spotted that the app is spending around 40% of its OpenGL time in glGetTexImage. the thing is, is that to my knowledge I am not calling this function. the only place i can find it in OSG is in Image::readImageFromCurrentTexture. Does any one know why this might be getting called (render to texture etc) and what I can do to improve the performance? Thanks in advance Tom
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