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disruptive

OpenGL Efficiency of OpenGL ArcBall

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I have some code that uses the Arc-ball routine (NeHe tutorials) to rotate around the frame using the mouse. However I find that without hardware acceleration the visualization is impossibly slow and I cannot move around the frame for a large number of draw elements. I am drawing several thousand spheres - maybe 8k of them (fairly roughly using glusphere [not too many slices per sphere]). Is there any obvious guidance for speeding things up somewhat? I have dropped the resolution - but cannot believe how slow it loads. I have not posted the code here, but will if requested because there is quite a bit of it. Is there anything that can easily be done to speed things up? Thanks in advance.

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Rendering in software is inherently slower than using hardware acceleration. Rendering 8k spheres in software will be very slow; no matter how much you optimize your OpenGL calls.

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The Arc-ball manipulation has nothing to do with your performance - it is merely a method of camera manipulation.

As bobofjoe mentions, 3D rendering without hardware acceleration is always painfully slow. Is there any particular reason why you don't have hardware acceleration?

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I ma running on an old laptop without much in the way of speed...I had been running on machine with dedicated nvidia display - but alas just the cranky old laptop right now!

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