Thanks for your reply.<div>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.</div>
<div><br></div><div>When using this method with MFC/WinForm, the result are very good. When switching to .NET 2008, the results are dropping dramatically ... </div><div><br></div><div>I will try with a PictureBox just to be sure...</div>
<div><br></div><div>Fred.</div><div><br></div><div><br><div class="gmail_quote">2011/2/24 Joseph Melnyk <span dir="ltr"><<a href="mailto:JMelnyk@pile.com">JMelnyk@pile.com</a>></span><br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">
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<p class="MsoNormal"><span style="font-size:11.0pt">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?</span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> </span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">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. </span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> </span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;color:#1F497D"> </span></p>
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<p class="MsoNormal"><b><span style="font-size:10.0pt">From:</span></b><span style="font-size:10.0pt"> <a href="mailto:vtkusers-bounces@vtk.org" target="_blank">vtkusers-bounces@vtk.org</a> [mailto:<a href="mailto:vtkusers-bounces@vtk.org" target="_blank">vtkusers-bounces@vtk.org</a>]
<b>On Behalf Of </b>Frederic DANESI</span></p>
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<p class="MsoNormal">We came accross something weird when using Visual Studio CLR.</p>
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<p class="MsoNormal">We have created a very simple VTK pipeline (load a STL file => render => move the camera around while taking screen shots).</p>
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<p class="MsoNormal">Those operation are integrated in a vtkPanel, build as a C++ DLL.</p>
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<p class="MsoNormal"> </p>
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<p class="MsoNormal">When using this DLL in a console application (with the VTK default RenderWindow), we get a framerate of 100 fps.</p>
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<p class="MsoNormal">When using this DLL in a winform application (Visual Studio 6,MFC, no CLR), we get the same framerate.</p>
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<p class="MsoNormal"> </p>
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<p class="MsoNormal">When using this DLL in a .Net Windows Form (Visual Studio 10, CLR) we get a framerate of 26 fps, which is not acceptable.</p>
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<p class="MsoNormal">(Obvisously, if we use directly the VTK classes inside the CLR project without building a library, the framerate is even worse : 6 fps).</p>
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<p class="MsoNormal" style="margin-left:10.5pt">Does anyone have knowledge about using VTK inside a CLR application without such a loss of performance ? Are we missing something ?</p>
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</blockquote></div><br><br clear="all"><br>-- <br><br><br>Cordialement,<br>F.Danesi<br>-- <br>Responsable Développement Informatique et Travail Collaboratif<br>Centre Technique DINCCS (Centre Technique Dédié à l’Ingénierie Numérique, la Conception Collaborative et la Simulation)<br>
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