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P Retondo

Open GL rendering gets slower over time

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Open GL rendering in VW 8.5.2 gets slower as the program is used. I just timed this phenomenon: a rendering of a complex design takes 13 seconds when the program is just opened. After a couple of hours of working in VectorWorks, the same rendering takes 34 seconds. After quitting and restarting the program, it again takes 13 seconds to render.

Does anyone know why this happens, and does anyone know if the problem has been fixed in 9.0?

VW 8.5.2

Win 2000

P4 2G/768 MB

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Could you please provide us the following information:

1. Is the retained model generated in early and later renderings? You can easily verify this by using fly-over tool to drag the model around and if it stays rendered, then the model is retained, if it returns to wire-frame mode, then the model is not retained.

2. Did you have some other documents open during that couple of hours? Did you render those docs in OpenGL modes as well?

3. Is this the only case you noticed slowdown over time or there are other cases as well?

4. Could you please send us this case? We will test it on our latest version and see whether we can duplicate it. Also, tell us what kind of card you have on that machine.

Thanks!

Shirley Carter

Software engineer

Nemetschek N.A. Inc.

quote:

Originally posted by P Retondo:

Open GL rendering in VW 8.5.2 gets slower as the program is used. I just timed this phenomenon: a rendering of a complex design takes 13 seconds when the program is just opened. After a couple of hours of working in VectorWorks, the same rendering takes 34 seconds. After quitting and restarting the program, it again takes 13 seconds to render.

Does anyone know why this happens, and does anyone know if the problem has been fixed in 9.0?

VW 8.5.2

Win 2000

P4 2G/768 MB

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