[vtkusers] Changes from VTK 4.4 to 5.4?

[Wagner Sales]

Hi Affolter,

I think will be very difficult to tell about all the changes from VTK
4.4 and 5.4. Are a lot of changes between the two versions. For
example, pipeline are changed a lot from 4.4 to 5.0, and other
internal structures may be too. You are using a very, very outdated
version, then probably your migration will not painless.  Finally,
without the source code I think may be the only help you can give here
are something like Michael tell you.

Regards,

Wagner Sales

2009/11/5 Michael Jackson <mike.jackson at bluequartz.net>:
> If you can get your hands on a profiler, run your app through the profiler
> and see where all the time is being spent.
>
> _________________________________________________________
> Mike Jackson                  mike.jackson at bluequartz.net
> BlueQuartz Software                    www.bluequartz.net
> Principal Software Engineer                  Dayton, Ohio
>
> On Nov 5, 2009, at 8:07 AM, Affolter Martin wrote:
>
>> Hello VTKUsers
>>
>> I'm still struggling with the performance drop from VTK 4.4 to VTK 5.4. We
>> use VTK to visualize CAD-Models with thousands of actors (each vertex, face
>> or edge is represented by its own actor). The rendering with 5.4 is too
>> slow, so I am not able to switch to the newest version, even though I'd very
>> much like to.
>>
>> I have not gotten a lot of feedback on my last two e-mails, so I still
>> don't know what causes the slowdown. Does anyone of you have information on
>> what actually changed from 4.4 to 5.4 in terms of visualization pipeline and
>> rendering? Is there any documentation on changes in the architecture?
>>
>> I am willing to give you more information on how we use vtk in our
>> application if necessary.
>>
>> Martin
>>
>> PS: We work with Visual Studio 2005/2008.
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