<div dir="ltr">Hmm I think this was outside but I was close to the volume, also the view angle was close to 120 degrees as opposed to VTK's more typical 30</div><div class="gmail_extra"><br><div class="gmail_quote">On Fri, Jul 8, 2016 at 10:13 AM, Alvaro Sanchez <span dir="ltr"><<a href="mailto:alvaro.sanchez@kitware.com" target="_blank">alvaro.sanchez@kitware.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div>This merge request might fix the issue (<a href="https://gitlab.kitware.com/vtk/vtk/merge_requests/1655" target="_blank">https://gitlab.kitware.com/vtk/vtk/merge_requests/1655</a>). I could reproduce the problem but only when having the camera inside the bounding box of a rotated volume.</div><div><br></div><div>Let me know if this helps, thanks.</div><div><br></div><div>Alvaro</div><div><br></div><br><div class="gmail_extra"><br><div class="gmail_quote">On Thu, Jul 7, 2016 at 9:44 AM, Ken Martin <span dir="ltr"><<a href="mailto:ken.martin@kitware.com" target="_blank">ken.martin@kitware.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-style:solid;border-left-color:rgb(204,204,204);padding-left:1ex"><div dir="ltr">I pushed a fix to the OpenVR remote module. You will need to make sure you set MultiSamples(0) on your renderwindow before you render as the issue involved reading from a multisampled buffer. I did test with a simple Volume Rendering example and it worked. There did seem to be a clipping/bbox issue with the volume when I adjusted it's position and orientation but I suspect that is a bug in the volume rendering code.<div><br></div><div>Thanks</div><div>Ken</div></div><div class="gmail_extra"><br><div class="gmail_quote">On Wed, Jul 6, 2016 at 4:30 PM, Ken Martin <span dir="ltr"><<a href="mailto:ken.martin@kitware.com" target="_blank">ken.martin@kitware.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-style:solid;border-left-color:rgb(204,204,204);padding-left:1ex"><div dir="ltr">I have not tested volume rendering with vtkOpenVR but ... I can't think of any reason it would not work. I suspect there is maybe a some sort of issue with the volume renderer copying the frame back into (or out of) the frame buffer. I suspect if you can find the issue the fix will be pretty easy. If I get a chance I'll try giving it a shot.</div><div class="gmail_extra"><br><div class="gmail_quote">On Wed, Jul 6, 2016 at 1:54 PM, Guilherme Alcarde Gallo <span dir="ltr"><<a href="mailto:guilherme.gallo@eldorado.org.br" target="_blank">guilherme.gallo@eldorado.org.br</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-style:solid;border-left-color:rgb(204,204,204);padding-left:1ex">
<div lang="EN-US" link="#0563C1" vlink="#954F72">
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<p class="MsoNormal"><span lang="PT-BR">Hello all!<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="PT-BR"><u></u> <u></u></span></p>
<p class="MsoNormal">I have succeeded in building VTK with vtkOpenVR remote module and running a simple Cone example in my OSVR HMD.
<u></u><u></u></p>
<p class="MsoNormal">But when I’ve attempted to run the volume rendering example "GPURenderDemo", I got a black screen and a lot of repetitive errors:<u></u><u></u></p>
<p class="MsoNormal"><i>ERROR: In<u></u><u></u></i></p>
<p class="MsoNormal"><i>C:\VTK-master\Rendering\OpenGL2\vtkTextureObject.cxx,<u></u><u></u></i></p>
<p class="MsoNormal"><i>line 2035<u></u><u></u></i></p>
<p class="MsoNormal"><i>vtkTextureObject (0000000BE6462060): failed at glCopyTexImage2D 6402 1 OpenGL errors detected<u></u><u></u></i></p>
<p class="MsoNormal"><i> 0 : (1282) Invalid operation<u></u><u></u></i></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">Also, I have tried to run the CPU-based volume rendering example “FixedPointVolumeRayCastMapperCT”.<u></u><u></u></p>
<p class="MsoNormal">Although the performance is poor, it works, since the texture successfully appears in the HMD and its tracking is integrated with the WindowInteractor.<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">My colleague has made an investigation about this issue comparing both examples, he concluded that the problem is related with the “SmartVolumeMapper” class.<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">So I would like to ask a few questions:<u></u><u></u></p>
<p><u></u><span>1)<span style="font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;font-size:7pt;line-height:normal;font-family:"Times New Roman"">
</span></span><u></u>Does the remote module vtkOpenVR has support for volume rendering?
<u></u><u></u></p>
<p class="MsoNormal" style="text-indent:18pt">2a) If it does, what I'm doing wrong? Is there any problem with SmartVolumeMapper implementation for running vtkOpenVr applications?<u></u><u></u></p>
<p class="MsoNormal" style="text-indent:18pt">2b) If it don’t, how I can add volume rendering support for vtkOpenVR? (I and my team are willing to do this)<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">Thank you very much!<span><font color="#888888"><u></u><u></u></font></span></p><span><font color="#888888">
<p class="MsoNormal">Guilherme<u></u><u></u></p>
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<br></blockquote></div><span><font color="#888888"><br><br clear="all"><span><font color="#888888"><div><br></div>-- <br><div data-smartmail="gmail_signature">Ken Martin PhD<div>Chairman & CFO<br>Kitware Inc.<br>28 Corporate Drive<br>Clifton Park NY 12065<br><a href="tel:518%20371%203971" value="+15183713971" target="_blank">518 371 3971</a><div><br></div><div><span style="font-size:10pt;font-family:Tahoma,sans-serif">This communication,
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</font></span></blockquote></div><span><font color="#888888"><br><br clear="all"><span class="HOEnZb"><font color="#888888"><div><br></div>-- <br><div data-smartmail="gmail_signature">Ken Martin PhD<div>Chairman & CFO<br>Kitware Inc.<br>28 Corporate Drive<br>Clifton Park NY 12065<br><a href="tel:518%20371%203971" value="+15183713971" target="_blank">518 371 3971</a><div><br></div><div><span style="font-size:10pt;font-family:Tahoma,sans-serif">This communication,
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</font></span></blockquote></div><span class="HOEnZb"><font color="#888888"><br><br clear="all"><div><br></div>-- <br><div data-smartmail="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div>Alvaro Sanchez</div><div>Kitware, Inc.</div><div><span style="color:rgb(0,0,0);font-family:Arial;font-size:14.6667px;line-height:20.24px;white-space:pre-wrap">Senior </span>R&D Engineer</div><div>21 Corporate Drive</div><div>Clifton Park, NY 12065-8662</div><div>Phone: <a href="tel:518-881-4901" value="+15188814901" target="_blank">518-881-4901</a></div></div></div></div></div>
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</blockquote></div><br><br clear="all"><div><br></div>-- <br><div class="gmail_signature" data-smartmail="gmail_signature">Ken Martin PhD<div>Chairman & CFO<br>Kitware Inc.<br>28 Corporate Drive<br>Clifton Park NY 12065<br>518 371 3971<div><br></div><div><span style="font-size:10pt;font-family:Tahoma,sans-serif">This communication,
including all attachments, contains confidential and legally privileged
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Thank you.</span></div></div></div>
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