[vtkusers] Visual Studio CLR makes VTK really slow ...

[Frederic DANESI]

Thanks for your reply.
That's exactly what we are doing : vtkPanel is the entry point of our DLL
(native C++). It is a simple class which receive as input the handle of a
panel (hence the name), itself attached in a Form.

When using this method with MFC/WinForm, the result are very good. When
switching to .NET 2008, the results are dropping dramatically ...

I will try with a PictureBox just to be sure...

Fred.


2011/2/24 Joseph Melnyk <JMelnyk at pile.com>

>  I’ve done something similar: CLR (by way of C++/CLI) to interface with
> native C++ vtk, create a DLL from this and link it into a .NET windows
> form.  Within the DLL, I’m simply assigning the vtk RenderWindows to
> passed-in .NET PictureBox controls, however.  What is this vtkPanel that you
> mention?
>
>
>
> I’m getting frame rates close to what you mention (80-100 fps), but this
> could simply be my application, machine, etc.  I’ve not tested these various
> other scenarios to see if it improves/degrades otherwise.
>
>
>
>
>
> *From:* vtkusers-bounces at vtk.org [mailto:vtkusers-bounces at vtk.org] *On
> Behalf Of *Frederic DANESI
>
>
>
> We came accross something weird when using Visual Studio CLR.
>
>
>
> We have created a very simple VTK pipeline (load a STL file => render =>
> move the camera around while taking screen shots).
>
> Those operation are integrated in a vtkPanel, build as a C++ DLL.
>
>
>
> When using this DLL in a console application (with the VTK default
> RenderWindow), we get a framerate of 100 fps.
>
> When using this DLL in a winform application (Visual Studio 6,MFC, no CLR),
> we get the same framerate.
>
>
>
> When using this DLL in a .Net Windows Form (Visual Studio 10, CLR) we get a
> framerate of 26 fps, which is not acceptable.
>
> (Obvisously, if we use directly the VTK classes inside the CLR project
> without building a library, the framerate is even worse : 6 fps).
>
>
>
> Does anyone have knowledge about using VTK inside a CLR application without
> such a loss of performance ? Are we missing something ?
>
> __Scanned by MessageLabs
>



-- 


Cordialement,
F.Danesi
-- 
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Email : frederic.danesi at dinccs.com
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