<div dir="ltr"><span style="font-family:Calibri;font-size:15px">> NVidia Quadro K300m under Windows.</span><br><div><span style="font-family:Calibri;font-size:15px"><br></span></div><div><font face="Calibri"><span style="font-size:15px">hmmm, </span></font><font face="Calibri"><span style="font-size:15px">why would </span></font><span style="font-size:13px;color:rgb(0,0,0);font-family:Consolas">glGetIntegerv(GL_ALPHA_BITS, &alphaBits) would return 0? Maybe the context isn't initialized correctly at this point in the program somehow...</span></div><div><br></div><div>Thomas what does ctest -R Depth give you?</div><div><br></div><div><span style="color:rgb(0,0,0);font-family:Consolas;font-size:13px"><br></span></div><div><span style="color:rgb(0,0,0);font-family:Consolas;font-size:13px"><br></span></div><div><br></div><div><span style="color:rgb(0,0,0);font-family:Consolas;font-size:13px"><br></span></div><div><span style="color:rgb(0,0,0);font-family:Consolas;font-size:13px"><br></span></div></div><div class="gmail_extra"><br clear="all"><div><div class="gmail_signature">David E DeMarle<br>Kitware, Inc.<br>R&D Engineer<br>21 Corporate Drive<br>Clifton Park, NY 12065-8662<br>Phone: 518-881-4909</div></div>
<br><div class="gmail_quote">On Mon, Nov 10, 2014 at 10:11 AM, Aashish Chaudhary <span dir="ltr"><<a href="mailto:aashish.chaudhary@kitware.com" target="_blank">aashish.chaudhary@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">What kind of graphics card / driver version / and OS you are using? Any information related to this would be useful. <div><br></div><div>- Aashish</div></div><div class="gmail_extra"><div><div class="h5"><br><div class="gmail_quote">On Mon, Nov 10, 2014 at 3:48 AM, Busse, Thomas (GE Oil & Gas) <span dir="ltr"><<a href="mailto:Thomas.Busse@ge.com" target="_blank">Thomas.Busse@ge.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div lang="DE" link="blue" vlink="purple">
<div>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Thanks a lot for help.<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">I have put a breakpoint at
</span><span lang="EN-US">vtkOpenGLRenderer.cxx:541</span><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">The
</span><span lang="EN-US" style="font-size:9.5pt;font-family:Consolas;color:blue;background:white">this</span><span lang="EN-US" style="font-size:9.5pt;font-family:Consolas;color:black;background:white">->DepthPeelingIsSupporte</span><span lang="EN-US" style="font-size:9.5pt;font-family:Consolas;color:black">d</span><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">
is 0.<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Digging a little bit deeper this is because :<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><u></u> <u></u></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-size:9.5pt;font-family:Consolas;color:black;background:white"> GLint alphaBits;<u></u><u></u></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-size:9.5pt;font-family:Consolas;color:black;background:white"> glGetIntegerv(GL_ALPHA_BITS, &alphaBits);<u></u><u></u></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-size:9.5pt;font-family:Consolas;color:black;background:white">
</span><span lang="EN-US" style="font-size:9.5pt;font-family:Consolas;color:blue;background:white">int</span><span lang="EN-US" style="font-size:9.5pt;font-family:Consolas;color:black;background:white">
supportsAtLeast8AlphaBits=alphaBits>=8;<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">alphaBits is 0.<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">I have checked that all other conditions for
<u></u><u></u></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-size:9.5pt;font-family:Consolas;color:black;background:white"> </span><span lang="EN-US" style="font-size:9.5pt;font-family:Consolas;color:blue;background:white">this</span><span lang="EN-US" style="font-size:9.5pt;font-family:Consolas;color:black;background:white">->DepthPeelingIsSupported
=<u></u><u></u></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-size:9.5pt;font-family:Consolas;color:black;background:white"> supports_depth_texture &&<u></u><u></u></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-size:9.5pt;font-family:Consolas;color:black;background:white"> supports_shadow &&<u></u><u></u></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-size:9.5pt;font-family:Consolas;color:black;background:white"> supports_blend_func_separate &&<u></u><u></u></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-size:9.5pt;font-family:Consolas;color:black;background:white"> supports_shadow_funcs &&<u></u><u></u></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-size:9.5pt;font-family:Consolas;color:black;background:white"> supports_vertex_shader &&<u></u><u></u></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-size:9.5pt;font-family:Consolas;color:black;background:white"> supports_fragment_shader &&<u></u><u></u></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-size:9.5pt;font-family:Consolas;color:black;background:white"> supports_shader_objects &&<u></u><u></u></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-size:9.5pt;font-family:Consolas;color:black;background:white"> supports_occlusion_query &&<u></u><u></u></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-size:9.5pt;font-family:Consolas;color:black;background:white"> supports_multitexture &&<u></u><u></u></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-size:9.5pt;font-family:Consolas;color:black;background:white"> supports_GL_ARB_texture_rectangle &&<u></u><u></u></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-size:9.5pt;font-family:Consolas;color:black;background:white"> supports_edge_clamp &&<u></u><u></u></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-size:9.5pt;font-family:Consolas;color:black;background:white"> supportsAtLeast8AlphaBits &&<u></u><u></u></span></p>
<p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-size:9.5pt;font-family:Consolas;color:black;background:white"> driver_support;<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">are true.<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Do I have some settings wrong so that alphaBits is 0? Or is it a problem with my graphics card?<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Best Regards,<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Thomas<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><u></u> <u></u></span></p>
<p class="MsoNormal"><b><span lang="EN-US" style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span lang="EN-US" style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> David E DeMarle [mailto:<a href="mailto:dave.demarle@kitware.com" target="_blank">dave.demarle@kitware.com</a>]
<br>
<b>Sent:</b> Freitag, 7. November 2014 18:00<br>
<b>To:</b> Busse, Thomas (GE Oil & Gas)<br>
<b>Cc:</b> <a href="mailto:vtkusers@vtk.org" target="_blank">vtkusers@vtk.org</a><br>
<b>Subject:</b> Re: [vtkusers] Depth peeling<u></u><u></u></span></p><div><div>
<p class="MsoNormal"><u></u> <u></u></p>
<div>
<div>
<p class="MsoNormal">There can be other conditions.<u></u><u></u></p>
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<div>
<p class="MsoNormal"><u></u> <u></u></p>
</div>
<div>
<p class="MsoNormal">Need to more details (or sit down with a debugger) to know for sure if one of them is stopping you.<u></u><u></u></p>
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<div>
<p class="MsoNormal"><u></u> <u></u></p>
</div>
<div>
<p class="MsoNormal">Put a breakpoint at vtkOpenGLRenderer.cxx:541 to see if vtk thinks your card can do depth peeling (or run one of the vtk depth peeling tests).<u></u><u></u></p>
</div>
<div>
<p class="MsoNormal"><u></u> <u></u></p>
</div>
<div>
<p class="MsoNormal">Put a breakpoint at vtkRenderer.cxx:599 to see if vtk thinks that there are translucent objects in your scene. The one has tripped me up before. If it is for you and you happen to be rendering multi block data with block opacity, try setting
Mapper->SetScalarVisibilityOff to prevent the LUT from deciding.<u></u><u></u></p>
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<div>
<p class="MsoNormal"><u></u> <u></u></p>
</div>
<div>
<p class="MsoNormal"><u></u> <u></u></p>
</div>
<div>
<p class="MsoNormal"><u></u> <u></u></p>
</div>
<div>
<div>
<p class="MsoNormal"><u></u> <u></u></p>
</div>
<div>
<p class="MsoNormal"><u></u> <u></u></p>
</div>
<div>
<div>
<p class="MsoNormal"><u></u> <u></u></p>
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</div>
<div>
<p class="MsoNormal"><br clear="all">
<u></u><u></u></p>
<div>
<div>
<p class="MsoNormal">David E DeMarle<br>
Kitware, Inc.<br>
R&D Engineer<br>
21 Corporate Drive<br>
Clifton Park, NY 12065-8662<br>
Phone: <a href="tel:518-881-4909" value="+15188814909" target="_blank">518-881-4909</a><u></u><u></u></p>
</div>
</div>
<p class="MsoNormal"><u></u> <u></u></p>
<div>
<p class="MsoNormal">On Fri, Nov 7, 2014 at 9:24 AM, Busse, Thomas (GE Oil & Gas) <<a href="mailto:Thomas.Busse@ge.com" target="_blank">Thomas.Busse@ge.com</a>> wrote:<u></u><u></u></p>
<div>
<div>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif"">Hi,<u></u><u></u></span></p>
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<div>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""> <u></u><u></u></span></p>
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<div>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif"">I tried to get depth peeling working but without success until now.<u></u><u></u></span></p>
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<div>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""> <u></u><u></u></span></p>
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<div>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif"">My setup is VTK6.1 and a NVidia Quadro K300m under Windows.<u></u><u></u></span></p>
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<div>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""> <u></u><u></u></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif"">Here is the code snippet of the initialization:<u></u><u></u></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""> <u></u><u></u></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:9.5pt;font-family:Consolas"> m_pVtkRenderWindow =
<span style="color:gray">pVtkMFCWindow</span>->GetRenderWindow();</span><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""><u></u><u></u></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:9.5pt;font-family:Consolas"> m_pVtkRenderWindow->Register(<span style="color:#6f008a">NULL</span>);</span><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""><u></u><u></u></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:9.5pt;font-family:Consolas"> </span><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""><u></u><u></u></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:9.5pt;font-family:Consolas"> m_pVtkRenderWindow->AddRenderer(m_pVtkRenderer);</span><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""><u></u><u></u></span></p>
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<div>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""> <u></u><u></u></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:9.5pt;font-family:Consolas"> <span style="color:green">
// Use Depth Peeling for transparency</span></span><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""><u></u><u></u></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:9.5pt;font-family:Consolas"> m_pVtkRenderWindow->SetAlphaBitPlanes(1);</span><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""><u></u><u></u></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:9.5pt;font-family:Consolas"> m_pVtkRenderWindow->SetMultiSamples(0);</span><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""><u></u><u></u></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:9.5pt;font-family:Consolas"> m_pVtkRenderer->SetUseDepthPeeling(1);</span><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""><u></u><u></u></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:9.5pt;font-family:Consolas"> m_pVtkRenderer->SetMaximumNumberOfPeels(100);</span><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""><u></u><u></u></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:9.5pt;font-family:Consolas"> m_pVtkRenderer->SetOcclusionRatio(0.1);</span><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""><u></u><u></u></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:9.5pt;font-family:Consolas"> </span><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""><u></u><u></u></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""> <u></u><u></u></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif"">but after rendering a call to
<u></u><u></u></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:9.5pt;font-family:Consolas"> <span style="color:blue">
int</span> depthPeelingWasUsed = m_pVtkRenderer->GetLastRenderingUsedDepthPeeling();</span><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""><u></u><u></u></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:9.5pt;font-family:Consolas">returns 0.</span><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""><u></u><u></u></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""> <u></u><u></u></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:9.5pt;font-family:Consolas">Can someone help me on this?</span><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""><u></u><u></u></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:9.5pt;font-family:Consolas">Is there some additional trick required to get it working?</span><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""><u></u><u></u></span></p>
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<div>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""> <u></u><u></u></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:9.5pt;font-family:Consolas">According specs the graphics card should fulfill all requirements.</span><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""><u></u><u></u></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""> <u></u><u></u></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:9.5pt;font-family:Consolas">Best Regards,</span><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""><u></u><u></u></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:9.5pt;font-family:Consolas">Thomas</span><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""><u></u><u></u></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""> <u></u><u></u></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""> <u></u><u></u></span></p>
</div>
</div>
<p class="MsoNormal" style="margin-bottom:12.0pt"><br>
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<p class="MsoNormal"><u></u> <u></u></p>
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<br></blockquote></div><br><br clear="all"><div><br></div></div></div><span class="HOEnZb"><font color="#888888">-- <br><div><div dir="ltr"><font face="trebuchet ms, sans-serif"><i>| Aashish Chaudhary <br>| Technical Leader <br>| Kitware Inc. <br></i></font><div><i><font face="trebuchet ms, sans-serif">| </font><a href="http://www.kitware.com/company/team/chaudhary.html" target="_blank">http://www.kitware.com/company/team/chaudhary.html</a></i></div></div></div>
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