[vtkusers] Performance VTK 4.4 vs. VTK 5.4.2

[AGPX]

Hello,

I have noticed this slow-down (more than 10 times) in my application. However, actually, my software use VTKEdge to perform volume rendering. But now that I read your message, I'm not sure if this issue is strictly related to VTKEdge or if it's a problem of VTK. I can discover this downgrading only the VTK library to the previous version I have used (the 5.3.0) in order to figure out if my problem is VTK or VTKEdge related. Thanks for the info.

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Da: Affolter Martin <martin.affolter at ntb.ch>
A: "vtkusers at vtk.org" <vtkusers at vtk.org>
Inviato: Lunedì 21 settembre 2009, 18:32:28
Oggetto: [vtkusers] Performance VTK 4.4 vs. VTK 5.4.2

Dear VTKUsers

I've been looking into the vtkusers archive for a while now, and it helped me solve my vtk-problems in most cases. We use VTK in a CAD Application and decided to move from version 4.4 to the latest release, which is 5.4.2 at this time. So I downloaded the sources, made a VS2008 solution with Cmake and built the libs and dlls. Besides replacing some deprecated methods I did not have to change anything in our code. No compiler-warnings, no errors (of course).

When I tested version 5.4.2 against 4.4 I found out, that 5.4.2 takes about 3-4 times longer to visualize a 3d-model of some robot-arm than version 4.4 did. The rendering while interacting is also very, very slow. Can anybody confirm such a performance drop? If so, then I think we might stick to v4.4 a little longer, if not, then I'll have to figure out what went wrong in my tests.

Thanks
Martin
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