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<div id="divtagdefaultwrapper" style="font-size:12pt;color:#000000;background-color:#FFFFFF;font-family:Calibri,Arial,Helvetica,sans-serif;">
<p>Hi,</p>
<p><br>
</p>
<p>Was your student using QVTKWidget & old OpenGL backend?</p>
<p><br>
</p>
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<div id="divtagdefaultwrapper" style="font-size:12pt; color:#000000; background-color:#FFFFFF; font-family:Calibri,Arial,Helvetica,sans-serif">
<p>Warm Regards</p>
<p>Rakesh Patil</p>
<p></p>
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" color="#000000" style="font-size:11pt"><b>From:</b> Róbert Špir <spir.robert@gmail.com><br>
<b>Sent:</b> Saturday, September 17, 2016 7:27 PM<br>
<b>To:</b> 'Ken Martin'; Rakesh Patil<br>
<b>Cc:</b> vtkusers@vtk.org<br>
<b>Subject:</b> RE: [vtkusers] Need information about "Invalid pixel format, no opengl support" message.</font>
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<p style="margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: "Times New Roman", serif;">
<span style="font-size:11.0pt; font-family:"Calibri",sans-serif">try updating the nvidia driver. One of my students has similar problem with nvidia drivers 350 series, after upgrading to 360 series everything works.</span></p>
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<span style="font-size:11.0pt; font-family:"Calibri",sans-serif"> </span></p>
<p style="margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: "Times New Roman", serif;">
<span style="font-size:11.0pt; font-family:"Calibri",sans-serif">Robert</span></p>
<p style="margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: "Times New Roman", serif;">
<span style="font-size:11.0pt; font-family:"Calibri",sans-serif"> </span></p>
<p style="margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: "Times New Roman", serif;">
<b><span style="font-size:11.0pt; font-family:"Calibri",sans-serif">From:</span></b><span style="font-size:11.0pt; font-family:"Calibri",sans-serif"> vtkusers [mailto:vtkusers-bounces@vtk.org]
<b>On Behalf Of </b>Ken Martin<br>
<b>Sent:</b> Saturday, September 17, 2016 3:29 PM<br>
<b>To:</b> Rakesh Patil <rakesh.p@tataelxsi.co.in><br>
<b>Cc:</b> vtkusers@vtk.org<br>
<b>Subject:</b> Re: [vtkusers] Need information about "Invalid pixel format, no opengl support" message.</span></p>
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Ohh sorry, that system is fine in terms of OpenGL1 or OpenGL2 support (both on the intel GPU and the quadro) as long as the drivers are up to date. I suspect your issue may be related to which Qt widget is being used. There are folks on this list that have
a lot of experience with Qt graphics issues and probably know the answer. Just not me :-)</p>
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On Sat, Sep 17, 2016 at 1:45 AM, Rakesh Patil <<a href="mailto:rakesh.p@tataelxsi.co.in" target="_blank" style="color: blue; text-decoration: underline;">rakesh.p@tataelxsi.co.in</a>> wrote:</p>
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<p style="background:white"><span style="font-family:"Calibri",sans-serif; color:black">Hi,</span></p>
<p style="background:white"><span style="font-family:"Calibri",sans-serif; color:black"> </span></p>
<p style="background:white"><span style="font-family:"Calibri",sans-serif; color:black">I have currently built VTK with OpenGL1 backend itself. On one of the system it is producing this error. So is there any other way to make sure that it works on that system?
Following is the system configuration of that machine:</span></p>
<p style="background:white"><span style="font-family:"Calibri",sans-serif; color:black"> </span></p>
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<span style="font-family:"Calibri",sans-serif; color:black">OS Name: Microsoft Windows 8.1 Pro</span></p>
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<span style="font-family:"Calibri",sans-serif; color:black">Version: 6.3.9600 Build 9600</span></p>
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<span style="font-family:"Calibri",sans-serif; color:black"> </span></p>
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<p style="background: white; margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: "Times New Roman", serif;">
<span style="font-family:"Calibri",sans-serif; color:black">OS Manufacturer: Microsoft Corporation</span></p>
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<p style="background: white; margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: "Times New Roman", serif;">
<span style="font-family:"Calibri",sans-serif; color:black">System Manufacturer: Dell Inc. </span></p>
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<p style="background: white; margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: "Times New Roman", serif;">
<span style="font-family:"Calibri",sans-serif; color:black">System Model: Precision T1700</span></p>
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<p style="background: white; margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: "Times New Roman", serif;">
<span style="font-family:"Calibri",sans-serif; color:black">System Type: x64-based PC</span></p>
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<p style="background: white; margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: "Times New Roman", serif;">
<span style="font-family:"Calibri",sans-serif; color:black">Processor Intel(R) Core(TM) i7-4790 CPU @ 3.60GHz, 3592 Mhz, 4 Core(s), 8 Logical Processor(s)</span></p>
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<p style="background: white; margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: "Times New Roman", serif;">
<span style="font-family:"Calibri",sans-serif; color:black">Installed Physical Memory (RAM): 32.0 GB </span></p>
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<p style="background: white; margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: "Times New Roman", serif;">
<span style="font-family:"Calibri",sans-serif; color:black">Total Virtual Memory: 36.7 GB</span></p>
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<p style="background: white; margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: "Times New Roman", serif;">
<span style="font-family:"Calibri",sans-serif; color:black">Display adapter: NVIDIA Quadro K620</span></p>
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<p style="background:white"><span style="font-family:"Calibri",sans-serif; color:black"> </span></p>
<p style="background:white"><span style="font-family:"Calibri",sans-serif; color:black">The mailing list suggests to use QVTKWidget2 instead of QVTKWidget. Will this help me to solve the issue? </span></p>
<p style="background:white"><span style="font-family:"Calibri",sans-serif; color:black"> </span></p>
<p style="background:white"><span style="font-family:"Calibri",sans-serif; color:black">Thanks for your quick reply. </span></p>
<p style="background:white"><span style="font-family:"Calibri",sans-serif; color:black"> </span></p>
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<p style="background:white"><span style="font-family:"Calibri",sans-serif; color:black">Warm Regards</span></p>
<p style="background:white"><span style="font-family:"Calibri",sans-serif; color:black">Rakesh Patil</span></p>
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<b><span style="font-size:11.0pt; font-family:"Calibri",sans-serif; color:black">From:</span></b><span style="font-size:11.0pt; font-family:"Calibri",sans-serif; color:black"> Ken Martin <<a href="mailto:ken.martin@kitware.com" target="_blank" style="color: blue; text-decoration: underline;">ken.martin@kitware.com</a>><br>
<b>Sent:</b> Friday, September 16, 2016 6:21:28 PM<br>
<b>To:</b> Rakesh Patil<br>
<b>Cc:</b> <a href="mailto:vtkusers@vtk.org" target="_blank" style="color: blue; text-decoration: underline;">
vtkusers@vtk.org</a><br>
<b>Subject:</b> Re: [vtkusers] Need information about "Invalid pixel format, no opengl support" message.</span>
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Any system with any configuration is pretty broad :-) If you want maximum portability at the cost of performance then make sure you build with the OpenGL1 backend. It will not run on every system, but it should work on most systems that are currently in use.
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On Fri, Sep 16, 2016 at 5:03 AM, Rakesh Patil <<a href="mailto:rakesh.p@tataelxsi.co.in" target="_blank" style="color: blue; text-decoration: underline;">rakesh.p@tataelxsi.co.in</a>> wrote:</p>
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<p style="background:white"><span style="font-family:"Calibri",sans-serif; color:black">Hi,</span></p>
<p style="background:white"><span style="font-family:"Calibri",sans-serif; color:black"> </span></p>
<p style="background:white"><span style="font-family:"Calibri",sans-serif; color:black">How do I make sure that my VTK based application will work on any system with any configuration, without throwing this error message? Upgrading VTK 6.3 to the latest version
will solve the issue, or should we try upgrading the NVidia driver card?</span></p>
<p style="background:white"><span style="font-family:"Calibri",sans-serif; color:black"> </span></p>
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<p style="background:white"><span style="font-family:"Calibri",sans-serif; color:black">Warm Regards</span></p>
<p style="background:white"><span style="font-family:"Calibri",sans-serif; color:black">Rakesh Patil</span></p>
<p style="background:white"><span style="font-family:"Calibri",sans-serif; color:black"> </span></p>
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<b><span style="font-size:11.0pt; font-family:"Calibri",sans-serif; color:black">From:</span></b><span style="font-size:11.0pt; font-family:"Calibri",sans-serif; color:black"> Ken Martin <<a href="mailto:ken.martin@kitware.com" target="_blank" style="color: blue; text-decoration: underline;">ken.martin@kitware.com</a>><br>
<b>Sent:</b> Monday, March 14, 2016 7:30 PM<br>
<b>To:</b> Rakesh Patil<br>
<b>Cc:</b> <a href="mailto:vtkusers@vtk.org" target="_blank" style="color: blue; text-decoration: underline;">
vtkusers@vtk.org</a><br>
<b>Subject:</b> Re: [vtkusers] Need information about "Invalid pixel format, no opengl support" message.</span><span style="font-family:"Calibri",sans-serif; color:black">
</span></p>
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<span style="font-family:"Calibri",sans-serif; color:black"> </span></p>
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<p style="background: white; margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: "Times New Roman", serif;">
<span style="font-family:"Calibri",sans-serif; color:black">The old OpenGL backend will work with OpenGL version 1.1, while the new OpenGL backend requires something closer to OpenGL version 2.1 to 3.2 (or later).
</span></p>
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<p style="background: white; margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: "Times New Roman", serif;">
<span style="font-family:"Calibri",sans-serif; color:black">Windows only comes with OpenGL version 1.4 (a software renderer). It is up to the hardware providers to supply hardware drivers. Pretty much anything released by Nvidia/AMD/Intel in the past 5 years
will support OpenGL 3.2 or later. Earlier than that and it becomes a bit more hit or miss.</span></p>
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<span style="font-family:"Calibri",sans-serif; color:black">Yes it depends on the graphics card. But since Intel started building in OpenGL support into their CPUs you can generally count on all recent (IvyBridge maybe SandyBridge or later) systems having sufficient
OpenGL support for the new backend. There is a method renderWindow->SupportsOpenGL() that will test if a system meets the minimum requirements for the new backend,</span></p>
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<span style="font-family:"Calibri",sans-serif; color:black">I mentioned "one provided to VTK" because sometimes developers create their own opengl context (the context determines what level of OpenGL is provided) and then tell VTK to use it. That will only
work if they give VTK a context that includes support for 3.2. Normally VTK creates its own context so it makes sure to create the right one. </span></p>
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<span style="font-family:"Calibri",sans-serif; color:black">I do not know much about Qt.</span></p>
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<span style="font-family:"Calibri",sans-serif; color:black">Thanks</span></p>
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<span style="font-family:"Calibri",sans-serif; color:black">Ken</span></p>
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<span style="font-family:"Calibri",sans-serif; color:black">On Mon, Mar 14, 2016 at 4:16 AM, Rakesh Patil <<a href="mailto:rakesh.p@tataelxsi.co.in" target="_blank" style="color: blue; text-decoration: underline;">rakesh.p@tataelxsi.co.in</a>> wrote:</span></p>
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<p style="background:white"><span style="font-family:"Calibri",sans-serif; color:black">Hi Ken Martin,</span></p>
<p style="background:white"><span style="font-family:"Calibri",sans-serif; color:black"> </span></p>
<p style="background:white"><span style="font-family:"Calibri",sans-serif; color:black">I believe I understood the core reason as why this message is displayed. I need some more details.</span></p>
<p style="background:white"><span style="font-family:"Calibri",sans-serif; color:black"> </span></p>
<p style="background:white"><span style="font-family:"Calibri",sans-serif; color:black">1) In what way OpenGL backend is different from the OpenGL2 backend for VTK 6.3. Knowing that QVTKWidget will be deprecated, what pre-requisite conditions needs to be considered
to stick myself working with QVTKWidget on various system?</span></p>
<p style="background:white"><span style="font-family:"Calibri",sans-serif; color:black">2) What exactly do you mean, when you say
<u>"one was provided to VTK that did not include opengl support"</u>. I guess all the latest Windows OS do come with OpenGL version greater than 1.1. So I think all the drivers must have OpenGL support right? Correct me if I am wrong.</span></p>
<p style="background:white"><span style="font-family:"Calibri",sans-serif; color:black">3) Does this functionality really vary from one graphics card to another? I mean does it depend on the graphics card also? If so, how will I know whether my graphics card
supports OpenGL backend or OpenGL2 backend?</span></p>
<p style="background:white"><span style="font-family:"Calibri",sans-serif; color:black"> </span></p>
<p style="background:white"><span style="font-family:"Calibri",sans-serif; color:black">Thank You</span></p>
<p style="background:white"><span style="font-family:"Calibri",sans-serif; color:black"> </span></p>
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<p style="background:white"><span style="font-family:"Calibri",sans-serif; color:black">Warm Regards</span></p>
<p style="background:white"><span style="font-family:"Calibri",sans-serif; color:black">Rakesh Patil</span></p>
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<b><span style="font-size:11.0pt; font-family:"Calibri",sans-serif; color:black">From:</span></b><span style="font-size:11.0pt; font-family:"Calibri",sans-serif; color:black"> Ken Martin <<a href="mailto:ken.martin@kitware.com" target="_blank" style="color: blue; text-decoration: underline;">ken.martin@kitware.com</a>><br>
<b>Sent:</b> Saturday, March 12, 2016 1:03 AM<br>
<b>To:</b> Rakesh Patil<br>
<b>Cc:</b> <a href="mailto:vtkusers@vtk.org" target="_blank" style="color: blue; text-decoration: underline;">
vtkusers@vtk.org</a><br>
<b>Subject:</b> Re: [vtkusers] Need information about "Invalid pixel format, no opengl support" message.</span><span style="font-family:"Calibri",sans-serif; color:black">
</span></p>
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<p style="background: white; margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: "Times New Roman", serif;">
<span style="font-family:"Calibri",sans-serif; color:black"> </span></p>
</div>
</div>
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<p style="background: white; margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: "Times New Roman", serif;">
<span style="font-family:"Calibri",sans-serif; color:black">I believe you gave the specs for your desktop as opposed to the laptop.
</span></p>
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<p style="background: white; margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: "Times New Roman", serif;">
<span style="font-family:"Calibri",sans-serif; color:black"> </span></p>
</div>
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<p style="background: white; margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: "Times New Roman", serif;">
<span style="font-family:"Calibri",sans-serif; color:black">That message occurs on windows on the old OpenGL backend (and the OpenGL2 backend for VTK 6.3) It indicates that VTK tried to setup a device context for rendering but the device did not support opengl,
either because VTK failed to find a suitable device or because on was provided to VTK that did not include opengl support. </span></p>
</div>
<div>
<p style="background: white; margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: "Times New Roman", serif;">
<span style="font-family:"Calibri",sans-serif; color:black"> </span></p>
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<p style="background: white; margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: "Times New Roman", serif;">
<span style="font-family:"Calibri",sans-serif; color:black">Thanks</span></p>
</div>
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<p style="background: white; margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: "Times New Roman", serif;">
<span style="font-family:"Calibri",sans-serif; color:black">Ken</span></p>
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<p style="background: white; margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: "Times New Roman", serif;">
<span style="font-family:"Calibri",sans-serif; color:black"> </span></p>
</div>
<div>
<p style="background: white; margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: "Times New Roman", serif;">
<span style="font-family:"Calibri",sans-serif; color:black"> </span></p>
</div>
</div>
<div>
<p style="background: white; margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: "Times New Roman", serif;">
<span style="font-family:"Calibri",sans-serif; color:black"> </span></p>
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<p style="background: white; margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: "Times New Roman", serif;">
<span style="font-family:"Calibri",sans-serif; color:black">On Wed, Mar 9, 2016 at 7:22 AM, Rakesh Patil <<a href="mailto:rakesh.p@tataelxsi.co.in" target="_blank" style="color: blue; text-decoration: underline;">rakesh.p@tataelxsi.co.in</a>> wrote:</span></p>
<blockquote style="border:none; border-left:solid #CCCCCC 1.0pt; padding:0cm 0cm 0cm 6.0pt; margin-left:4.8pt; margin-right:0cm">
<div>
<div>
<p style="background:white"><span style="font-family:"Calibri",sans-serif; color:black">Hi VTK users,</span></p>
<p style="background:white"><span style="font-family:"Calibri",sans-serif; color:black"> </span></p>
<p style="background:white"><span style="font-family:"Calibri",sans-serif; color:black">I am facing a strange issue. I am using QVTKWidget in my application and it works very well on my desktop computer. The same code when I try to compile on my laptop it throws
me this error message:</span></p>
<p style="background:white"><span style="font-family:"Calibri",sans-serif; color:black"> </span></p>
<p style="background:white"><span style="font-family:"Calibri",sans-serif; color:black">"Invalid pixel format, no opengl support"</span></p>
<p style="background:white"><span style="font-family:"Calibri",sans-serif; color:black"> </span></p>
<p style="background:white"><span style="font-family:"Calibri",sans-serif; color:black">I would like to know what are the scenarios in which VTK throws this message. Whether there is any dependency on various versions of Windows OS? I believe it should not
be. Below is the system information where I get this error:</span></p>
<p style="background:white"><span style="font-family:"Calibri",sans-serif; color:black"> </span></p>
<div>
<p style="background: white; margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: "Times New Roman", serif;">
<span style="font-family:"Calibri",sans-serif; color:black">OS Name: Microsoft Windows 8.1 Pro
</span></p>
</div>
<div>
<p style="background: white; margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: "Times New Roman", serif;">
<span style="font-family:"Calibri",sans-serif; color:black">Version: 6.3.9600 Build 9600</span></p>
</div>
<div>
<p style="background: white; margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: "Times New Roman", serif;">
<span style="font-family:"Calibri",sans-serif; color:black">OS Manufacturer: Microsoft Corporation
</span></p>
</div>
<div>
<p style="background: white; margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: "Times New Roman", serif;">
<span style="font-family:"Calibri",sans-serif; color:black">System Manufacturer: Dell Inc.
</span></p>
</div>
<div>
<p style="background: white; margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: "Times New Roman", serif;">
<span style="font-family:"Calibri",sans-serif; color:black">System Model: Precision T1700</span></p>
</div>
<div>
<p style="background: white; margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: "Times New Roman", serif;">
<span style="font-family:"Calibri",sans-serif; color:black">System Type: x64-based PC</span></p>
</div>
<div>
<p style="background: white; margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: "Times New Roman", serif;">
<span style="font-family:"Calibri",sans-serif; color:black">Processor Intel(R) Core(TM) i7-4790 CPU @ 3.60GHz, 3592 Mhz, 4 Core(s), 8 Logical Processor(s)
</span></p>
</div>
<div>
<p style="background: white; margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: "Times New Roman", serif;">
<span style="font-family:"Calibri",sans-serif; color:black">Installed Physical Memory (RAM): 32.0 GB
</span></p>
</div>
<div>
<p style="background: white; margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: "Times New Roman", serif;">
<span style="font-family:"Calibri",sans-serif; color:black">Total Virtual Memory: 36.7 GB</span></p>
</div>
<div>
<p style="background: white; margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: "Times New Roman", serif;">
<span style="font-family:"Calibri",sans-serif; color:black">Display adapter: NVIDIA Quadro K620</span></p>
</div>
<div>
<p style="background: white; margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: "Times New Roman", serif;">
<span style="font-family:"Calibri",sans-serif; color:black"> </span></p>
</div>
<div>
<p style="background: white; margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: "Times New Roman", serif;">
<span style="font-family:"Calibri",sans-serif; color:black">Note: I am not using QVTKWidget2. Kindly give some feedback as early as possible.</span></p>
</div>
<div>
<p style="background: white; margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: "Times New Roman", serif;">
<span style="font-family:"Calibri",sans-serif; color:black"> </span></p>
</div>
<div>
<p style="background: white; margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: "Times New Roman", serif;">
<span style="font-family:"Calibri",sans-serif; color:black">Thank You</span></p>
</div>
<div>
<p style="background: white; margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: "Times New Roman", serif;">
<span style="font-family:"Calibri",sans-serif; color:black"> </span></p>
</div>
<div>
<p style="background: white; margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: "Times New Roman", serif;">
<span style="font-family:"Calibri",sans-serif; color:black">Warm Regards</span></p>
</div>
<div>
<div>
<p style="background:white"><span style="font-family:"Calibri",sans-serif; color:black">Rakesh Patil</span></p>
<p style="background:white"><span style="font-family:"Calibri",sans-serif; color:black"> </span></p>
</div>
</div>
</div>
</div>
<p style="background: white; margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: "Times New Roman", serif;">
<span style="font-family:"Calibri",sans-serif; color:black"><br>
_______________________________________________<br>
Powered by <a href="http://www.kitware.com" target="_blank" style="color: blue; text-decoration: underline;">
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Please keep messages on-topic and check the VTK FAQ at: <a href="http://www.vtk.org/Wiki/VTK_FAQ" target="_blank" style="color: blue; text-decoration: underline;">
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</blockquote>
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<p style="background: white; margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: "Times New Roman", serif;">
<span style="font-family:"Calibri",sans-serif; color:#888888"><br>
<br clear="all">
</span></p>
<div>
<p style="background: white; margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: "Times New Roman", serif;">
<span style="font-family:"Calibri",sans-serif; color:#888888"> </span></p>
</div>
<p style="background: white; margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: "Times New Roman", serif;">
<span style="font-family:"Calibri",sans-serif; color:#888888">-- </span></p>
<div>
<p style="background: white; margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: "Times New Roman", serif;">
<span style="font-family:"Calibri",sans-serif; color:#888888">Ken Martin PhD </span>
</p>
<div>
<p style="background: white; margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: "Times New Roman", serif;">
<span style="font-family:"Calibri",sans-serif; color:#888888">Chairman & CFO<br>
Kitware Inc.<br>
28 Corporate Drive<br>
Clifton Park NY 12065<br>
<a href="tel:518%20371%203971" target="_blank" style="color: blue; text-decoration: underline;">518 371 3971</a>
</span></p>
<div>
<p style="background: white; margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: "Times New Roman", serif;">
<span style="font-family:"Calibri",sans-serif; color:#888888"> </span></p>
</div>
<div>
<p style="background: white; margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: "Times New Roman", serif;">
<span style="font-size:10.0pt; font-family:"Tahoma",sans-serif; color:#888888">This communication, including all attachments, contains confidential and legally privileged information, and it is intended only for the use of the addressee. Access to this email
by anyone else is unauthorized. If you are not the intended recipient, any disclosure, copying, distribution or any action taken in reliance on it is prohibited and may be unlawful. If you received this communication in error please notify us immediately and
destroy the original message. Thank you.</span><span style="font-family:"Calibri",sans-serif; color:#888888"></span></p>
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</blockquote>
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<p style="background: white; margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: "Times New Roman", serif;">
<span style="font-family:"Calibri",sans-serif; color:#888888"><br>
<br clear="all">
</span><span></span></p>
<div>
<p style="background: white; margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: "Times New Roman", serif;">
</p>
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<p style="background: white; margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: "Times New Roman", serif;">
<span><span style="font-family:"Calibri",sans-serif; color:#888888">-- </span></span></p>
<div>
<p style="background: white; margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: "Times New Roman", serif;">
<span style="font-family:"Calibri",sans-serif; color:#888888">Ken Martin PhD </span>
</p>
<div>
<p style="background: white; margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: "Times New Roman", serif;">
<span style="font-family:"Calibri",sans-serif; color:#888888">Chairman & CFO<br>
Kitware Inc.<br>
28 Corporate Drive<br>
Clifton Park NY 12065<br>
<a href="tel:518%20371%203971" target="_blank" style="color: blue; text-decoration: underline;">518 371 3971</a>
</span></p>
<div>
<p style="background: white; margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: "Times New Roman", serif;">
<span style="font-family:"Calibri",sans-serif; color:#888888"> </span></p>
</div>
<div>
<p style="background: white; margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: "Times New Roman", serif;">
<span style="font-size:10.0pt; font-family:"Tahoma",sans-serif; color:#888888">This communication, including all attachments, contains confidential and legally privileged information, and it is intended only for the use of the addressee. Access to this email
by anyone else is unauthorized. If you are not the intended recipient, any disclosure, copying, distribution or any action taken in reliance on it is prohibited and may be unlawful. If you received this communication in error please notify us immediately and
destroy the original message. Thank you.</span><span style="font-family:"Calibri",sans-serif; color:#888888"></span></p>
</div>
</div>
</div>
</div>
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</div>
</div>
</div>
</blockquote>
</div>
<p style="margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: "Times New Roman", serif;">
<span style="color:#888888"><br>
<br clear="all">
</span><span></span></p>
<div>
<p style="margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: "Times New Roman", serif;">
</p>
</div>
<p style="margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: "Times New Roman", serif;">
<span><span style="color:#888888">-- </span></span></p>
<div>
<p style="margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: "Times New Roman", serif;">
<span style="color:#888888">Ken Martin PhD </span></p>
<div>
<p style="margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: "Times New Roman", serif;">
<span style="color:#888888">Chairman & CFO<br>
Kitware Inc.<br>
28 Corporate Drive<br>
Clifton Park NY 12065<br>
<a href="tel:518%20371%203971" target="_blank" style="color: blue; text-decoration: underline;">518 371 3971</a>
</span></p>
<div>
<p style="margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: "Times New Roman", serif;">
<span style="color:#888888"> </span></p>
</div>
<div>
<p style="margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: "Times New Roman", serif;">
<span style="font-size:10.0pt; font-family:"Tahoma",sans-serif; color:#888888">This communication, including all attachments, contains confidential and legally privileged information, and it is intended only for the use of the addressee. Access to this email
by anyone else is unauthorized. If you are not the intended recipient, any disclosure, copying, distribution or any action taken in reliance on it is prohibited and may be unlawful. If you received this communication in error please notify us immediately and
destroy the original message. Thank you.</span><span style="color:#888888"></span></p>
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</div>
</div>
</div>
</div>
</div>
</div>
</blockquote>
</div>
<p style="margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: "Times New Roman", serif;">
<br>
<br clear="all">
</p>
<div>
<p style="margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: "Times New Roman", serif;">
</p>
</div>
<p style="margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: "Times New Roman", serif;">
-- </p>
<div>
<p style="margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: "Times New Roman", serif;">
Ken Martin PhD</p>
<div>
<p style="margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: "Times New Roman", serif;">
Chairman & CFO<br>
Kitware Inc.<br>
28 Corporate Drive<br>
Clifton Park NY 12065<br>
518 371 3971</p>
<div>
<p style="margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: "Times New Roman", serif;">
</p>
</div>
<div>
<p style="margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: "Times New Roman", serif;">
<span style="font-size:10.0pt; font-family:"Tahoma",sans-serif">This communication, including all attachments, contains confidential and legally privileged information, and it is intended only for the use of the addressee. Access to this email by anyone else
is unauthorized. If you are not the intended recipient, any disclosure, copying, distribution or any action taken in reliance on it is prohibited and may be unlawful. If you received this communication in error please notify us immediately and destroy the
original message. Thank you.</span></p>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
<hr style="display:inline-block;width:98%" tabindex="-1">
<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>From:</b> Róbert Špir <spir.robert@gmail.com><br>
<b>Sent:</b> Saturday, September 17, 2016 7:27:54 PM<br>
<b>To:</b> 'Ken Martin'; Rakesh Patil<br>
<b>Cc:</b> vtkusers@vtk.org<br>
<b>Subject:</b> RE: [vtkusers] Need information about "Invalid pixel format, no opengl support" message.</font>
<div> </div>
</div>
<div>
<div class="WordSection1">
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;mso-fareast-language:EN-US">try updating the nvidia driver. One of my students has similar problem with nvidia drivers 350 series, after upgrading to 360 series everything works.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;mso-fareast-language:EN-US">Robert<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">From:</span></b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"> vtkusers [mailto:vtkusers-bounces@vtk.org]
<b>On Behalf Of </b>Ken Martin<br>
<b>Sent:</b> Saturday, September 17, 2016 3:29 PM<br>
<b>To:</b> Rakesh Patil <rakesh.p@tataelxsi.co.in><br>
<b>Cc:</b> vtkusers@vtk.org<br>
<b>Subject:</b> Re: [vtkusers] Need information about "Invalid pixel format, no opengl support" message.<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
<div>
<p class="MsoNormal">Ohh sorry, that system is fine in terms of OpenGL1 or OpenGL2 support (both on the intel GPU and the quadro) as long as the drivers are up to date. I suspect your issue may be related to which Qt widget is being used. There are folks on
this list that have a lot of experience with Qt graphics issues and probably know the answer. Just not me :-)<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
<div>
<p class="MsoNormal">On Sat, Sep 17, 2016 at 1:45 AM, Rakesh Patil <<a href="mailto:rakesh.p@tataelxsi.co.in" target="_blank">rakesh.p@tataelxsi.co.in</a>> wrote:<o:p></o:p></p>
<blockquote style="border:none;border-left:solid #CCCCCC 1.0pt;padding:0cm 0cm 0cm 6.0pt;margin-left:4.8pt;margin-right:0cm">
<div>
<div>
<p style="background:white"><span style="font-family:"Calibri",sans-serif;color:black">Hi,<o:p></o:p></span></p>
<p style="background:white"><span style="font-family:"Calibri",sans-serif;color:black"><o:p> </o:p></span></p>
<p style="background:white"><span style="font-family:"Calibri",sans-serif;color:black">I have currently built VTK with OpenGL1 backend itself. On one of the system it is producing this error. So is there any other way to make sure that it works on that system?
Following is the system configuration of that machine:<o:p></o:p></span></p>
<p style="background:white"><span style="font-family:"Calibri",sans-serif;color:black"><o:p> </o:p></span></p>
<div>
<p class="MsoNormal" style="background:white"><span style="font-family:"Calibri",sans-serif;color:black">OS Name: Microsoft Windows 8.1 Pro<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="font-family:"Calibri",sans-serif;color:black">Version: 6.3.9600 Build 9600<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="font-family:"Calibri",sans-serif;color:black"> <o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="font-family:"Calibri",sans-serif;color:black">OS Manufacturer: Microsoft Corporation<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="font-family:"Calibri",sans-serif;color:black">System Manufacturer: Dell Inc. <o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="font-family:"Calibri",sans-serif;color:black">System Model: Precision T1700<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="font-family:"Calibri",sans-serif;color:black">System Type: x64-based PC<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="font-family:"Calibri",sans-serif;color:black">Processor Intel(R) Core(TM) i7-4790 CPU @ 3.60GHz, 3592 Mhz, 4 Core(s), 8 Logical Processor(s)<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="font-family:"Calibri",sans-serif;color:black">Installed Physical Memory (RAM): 32.0 GB <o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="font-family:"Calibri",sans-serif;color:black">Total Virtual Memory: 36.7 GB<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="font-family:"Calibri",sans-serif;color:black">Display adapter: NVIDIA Quadro K620<o:p></o:p></span></p>
</div>
<p style="background:white"><span style="font-family:"Calibri",sans-serif;color:black"><o:p> </o:p></span></p>
<p style="background:white"><span style="font-family:"Calibri",sans-serif;color:black">The mailing list suggests to use QVTKWidget2 instead of QVTKWidget. Will this help me to solve the issue? <o:p></o:p></span></p>
<p style="background:white"><span style="font-family:"Calibri",sans-serif;color:black"><o:p> </o:p></span></p>
<p style="background:white"><span style="font-family:"Calibri",sans-serif;color:black">Thanks for your quick reply. <o:p></o:p></span></p>
<p style="background:white"><span style="font-family:"Calibri",sans-serif;color:black"><o:p> </o:p></span></p>
<div>
<div>
<p style="background:white"><span style="font-family:"Calibri",sans-serif;color:black">Warm Regards<o:p></o:p></span></p>
<p style="background:white"><span style="font-family:"Calibri",sans-serif;color:black">Rakesh Patil<o:p></o:p></span></p>
</div>
</div>
</div>
<div class="MsoNormal" align="center" style="text-align:center">
<hr size="2" width="98%" align="center">
</div>
<div>
<p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:black">From:</span></b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:black"> Ken Martin <<a href="mailto:ken.martin@kitware.com" target="_blank">ken.martin@kitware.com</a>><br>
<b>Sent:</b> Friday, September 16, 2016 6:21:28 PM<br>
<b>To:</b> Rakesh Patil<br>
<b>Cc:</b> <a href="mailto:vtkusers@vtk.org" target="_blank">vtkusers@vtk.org</a><br>
<b>Subject:</b> Re: [vtkusers] Need information about "Invalid pixel format, no opengl support" message.</span>
<o:p></o:p></p>
<div>
<p class="MsoNormal"> <o:p></o:p></p>
</div>
</div>
<div>
<div>
<p class="MsoNormal">Any system with any configuration is pretty broad :-) If you want maximum portability at the cost of performance then make sure you build with the OpenGL1 backend. It will not run on every system, but it should work on most systems that
are currently in use. <o:p></o:p></p>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
<div>
<p class="MsoNormal">On Fri, Sep 16, 2016 at 5:03 AM, Rakesh Patil <<a href="mailto:rakesh.p@tataelxsi.co.in" target="_blank">rakesh.p@tataelxsi.co.in</a>> wrote:<o:p></o:p></p>
<blockquote style="border:none;border-left:solid #CCCCCC 1.0pt;padding:0cm 0cm 0cm 6.0pt;margin-left:4.8pt;margin-right:0cm">
<div>
<div>
<p style="background:white"><span style="font-family:"Calibri",sans-serif;color:black">Hi,<o:p></o:p></span></p>
<p style="background:white"><span style="font-family:"Calibri",sans-serif;color:black"><o:p> </o:p></span></p>
<p style="background:white"><span style="font-family:"Calibri",sans-serif;color:black">How do I make sure that my VTK based application will work on any system with any configuration, without throwing this error message? Upgrading VTK 6.3 to the latest version
will solve the issue, or should we try upgrading the NVidia driver card?<o:p></o:p></span></p>
<p style="background:white"><span style="font-family:"Calibri",sans-serif;color:black"><o:p> </o:p></span></p>
<div>
<div>
<p style="background:white"><span style="font-family:"Calibri",sans-serif;color:black">Warm Regards<o:p></o:p></span></p>
<p style="background:white"><span style="font-family:"Calibri",sans-serif;color:black">Rakesh Patil<o:p></o:p></span></p>
<p style="background:white"><span style="font-family:"Calibri",sans-serif;color:black"><o:p> </o:p></span></p>
</div>
</div>
<div>
<div class="MsoNormal" align="center" style="text-align:center;background:white">
<span style="font-family:"Calibri",sans-serif;color:black">
<hr size="2" width="98%" align="center">
</span></div>
<div>
<p class="MsoNormal" style="background:white"><b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:black">From:</span></b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:black"> Ken Martin <<a href="mailto:ken.martin@kitware.com" target="_blank">ken.martin@kitware.com</a>><br>
<b>Sent:</b> Monday, March 14, 2016 7:30 PM<br>
<b>To:</b> Rakesh Patil<br>
<b>Cc:</b> <a href="mailto:vtkusers@vtk.org" target="_blank">vtkusers@vtk.org</a><br>
<b>Subject:</b> Re: [vtkusers] Need information about "Invalid pixel format, no opengl support" message.</span><span style="font-family:"Calibri",sans-serif;color:black">
<o:p></o:p></span></p>
<div>
<p class="MsoNormal" style="background:white"><span style="font-family:"Calibri",sans-serif;color:black"> <o:p></o:p></span></p>
</div>
</div>
<div>
<div>
<p class="MsoNormal" style="background:white"><span style="font-family:"Calibri",sans-serif;color:black">The old OpenGL backend will work with OpenGL version 1.1, while the new OpenGL backend requires something closer to OpenGL version 2.1 to 3.2 (or later).
<o:p></o:p></span></p>
<div>
<p class="MsoNormal" style="background:white"><span style="font-family:"Calibri",sans-serif;color:black"><o:p> </o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="font-family:"Calibri",sans-serif;color:black">Windows only comes with OpenGL version 1.4 (a software renderer). It is up to the hardware providers to supply hardware drivers. Pretty much anything released
by Nvidia/AMD/Intel in the past 5 years will support OpenGL 3.2 or later. Earlier than that and it becomes a bit more hit or miss.<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="font-family:"Calibri",sans-serif;color:black"><o:p> </o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="font-family:"Calibri",sans-serif;color:black">Yes it depends on the graphics card. But since Intel started building in OpenGL support into their CPUs you can generally count on all recent (IvyBridge
maybe SandyBridge or later) systems having sufficient OpenGL support for the new backend. There is a method renderWindow->SupportsOpenGL() that will test if a system meets the minimum requirements for the new backend,<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="font-family:"Calibri",sans-serif;color:black"><o:p> </o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="font-family:"Calibri",sans-serif;color:black">I mentioned "one provided to VTK" because sometimes developers create their own opengl context (the context determines what level of OpenGL is provided)
and then tell VTK to use it. That will only work if they give VTK a context that includes support for 3.2. Normally VTK creates its own context so it makes sure to create the right one. <o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="font-family:"Calibri",sans-serif;color:black"><o:p> </o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="font-family:"Calibri",sans-serif;color:black">I do not know much about Qt.<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="font-family:"Calibri",sans-serif;color:black"><o:p> </o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="font-family:"Calibri",sans-serif;color:black">Thanks<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="font-family:"Calibri",sans-serif;color:black">Ken<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="font-family:"Calibri",sans-serif;color:black"><o:p> </o:p></span></p>
</div>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="font-family:"Calibri",sans-serif;color:black"><o:p> </o:p></span></p>
<div>
<p class="MsoNormal" style="background:white"><span style="font-family:"Calibri",sans-serif;color:black">On Mon, Mar 14, 2016 at 4:16 AM, Rakesh Patil <<a href="mailto:rakesh.p@tataelxsi.co.in" target="_blank">rakesh.p@tataelxsi.co.in</a>> wrote:<o:p></o:p></span></p>
<blockquote style="border:none;border-left:solid #CCCCCC 1.0pt;padding:0cm 0cm 0cm 6.0pt;margin-left:4.8pt;margin-right:0cm">
<div>
<div>
<p style="background:white"><span style="font-family:"Calibri",sans-serif;color:black">Hi Ken Martin,<o:p></o:p></span></p>
<p style="background:white"><span style="font-family:"Calibri",sans-serif;color:black"><o:p> </o:p></span></p>
<p style="background:white"><span style="font-family:"Calibri",sans-serif;color:black">I believe I understood the core reason as why this message is displayed. I need some more details.<o:p></o:p></span></p>
<p style="background:white"><span style="font-family:"Calibri",sans-serif;color:black"><o:p> </o:p></span></p>
<p style="background:white"><span style="font-family:"Calibri",sans-serif;color:black">1) In what way OpenGL backend is different from the OpenGL2 backend for VTK 6.3. Knowing that QVTKWidget will be deprecated, what pre-requisite conditions needs to be considered
to stick myself working with QVTKWidget on various system?<o:p></o:p></span></p>
<p style="background:white"><span style="font-family:"Calibri",sans-serif;color:black">2) What exactly do you mean, when you say
<u>"one was provided to VTK that did not include opengl support"</u>. I guess all the latest Windows OS do come with OpenGL version greater than 1.1. So I think all the drivers must have OpenGL support right? Correct me if I am wrong.<o:p></o:p></span></p>
<p style="background:white"><span style="font-family:"Calibri",sans-serif;color:black">3) Does this functionality really vary from one graphics card to another? I mean does it depend on the graphics card also? If so, how will I know whether my graphics card
supports OpenGL backend or OpenGL2 backend?<o:p></o:p></span></p>
<p style="background:white"><span style="font-family:"Calibri",sans-serif;color:black"><o:p> </o:p></span></p>
<p style="background:white"><span style="font-family:"Calibri",sans-serif;color:black">Thank You<o:p></o:p></span></p>
<p style="background:white"><span style="font-family:"Calibri",sans-serif;color:black"><o:p> </o:p></span></p>
<div>
<div>
<p style="background:white"><span style="font-family:"Calibri",sans-serif;color:black">Warm Regards<o:p></o:p></span></p>
<p style="background:white"><span style="font-family:"Calibri",sans-serif;color:black">Rakesh Patil<o:p></o:p></span></p>
</div>
</div>
<div>
<div class="MsoNormal" align="center" style="text-align:center;background:white">
<span style="font-family:"Calibri",sans-serif;color:black">
<hr size="2" width="98%" align="center">
</span></div>
<div>
<p class="MsoNormal" style="background:white"><b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:black">From:</span></b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:black"> Ken Martin <<a href="mailto:ken.martin@kitware.com" target="_blank">ken.martin@kitware.com</a>><br>
<b>Sent:</b> Saturday, March 12, 2016 1:03 AM<br>
<b>To:</b> Rakesh Patil<br>
<b>Cc:</b> <a href="mailto:vtkusers@vtk.org" target="_blank">vtkusers@vtk.org</a><br>
<b>Subject:</b> Re: [vtkusers] Need information about "Invalid pixel format, no opengl support" message.</span><span style="font-family:"Calibri",sans-serif;color:black">
<o:p></o:p></span></p>
<div>
<p class="MsoNormal" style="background:white"><span style="font-family:"Calibri",sans-serif;color:black"> <o:p></o:p></span></p>
</div>
</div>
<div>
<div>
<p class="MsoNormal" style="background:white"><span style="font-family:"Calibri",sans-serif;color:black">I believe you gave the specs for your desktop as opposed to the laptop.
<o:p></o:p></span></p>
<div>
<p class="MsoNormal" style="background:white"><span style="font-family:"Calibri",sans-serif;color:black"><o:p> </o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="font-family:"Calibri",sans-serif;color:black">That message occurs on windows on the old OpenGL backend (and the OpenGL2 backend for VTK 6.3) It indicates that VTK tried to setup a device context for
rendering but the device did not support opengl, either because VTK failed to find a suitable device or because on was provided to VTK that did not include opengl support. <o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="font-family:"Calibri",sans-serif;color:black"><o:p> </o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="font-family:"Calibri",sans-serif;color:black">Thanks<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="font-family:"Calibri",sans-serif;color:black">Ken<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="font-family:"Calibri",sans-serif;color:black"><o:p> </o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="font-family:"Calibri",sans-serif;color:black"><o:p> </o:p></span></p>
</div>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="font-family:"Calibri",sans-serif;color:black"><o:p> </o:p></span></p>
<div>
<p class="MsoNormal" style="background:white"><span style="font-family:"Calibri",sans-serif;color:black">On Wed, Mar 9, 2016 at 7:22 AM, Rakesh Patil <<a href="mailto:rakesh.p@tataelxsi.co.in" target="_blank">rakesh.p@tataelxsi.co.in</a>> wrote:<o:p></o:p></span></p>
<blockquote style="border:none;border-left:solid #CCCCCC 1.0pt;padding:0cm 0cm 0cm 6.0pt;margin-left:4.8pt;margin-right:0cm">
<div>
<div>
<p style="background:white"><span style="font-family:"Calibri",sans-serif;color:black">Hi VTK users,<o:p></o:p></span></p>
<p style="background:white"><span style="font-family:"Calibri",sans-serif;color:black"><o:p> </o:p></span></p>
<p style="background:white"><span style="font-family:"Calibri",sans-serif;color:black">I am facing a strange issue. I am using QVTKWidget in my application and it works very well on my desktop computer. The same code when I try to compile on my laptop it throws
me this error message:<o:p></o:p></span></p>
<p style="background:white"><span style="font-family:"Calibri",sans-serif;color:black"><o:p> </o:p></span></p>
<p style="background:white"><span style="font-family:"Calibri",sans-serif;color:black">"Invalid pixel format, no opengl support"<o:p></o:p></span></p>
<p style="background:white"><span style="font-family:"Calibri",sans-serif;color:black"><o:p> </o:p></span></p>
<p style="background:white"><span style="font-family:"Calibri",sans-serif;color:black">I would like to know what are the scenarios in which VTK throws this message. Whether there is any dependency on various versions of Windows OS? I believe it should not be. Below
is the system information where I get this error:<o:p></o:p></span></p>
<p style="background:white"><span style="font-family:"Calibri",sans-serif;color:black"><o:p> </o:p></span></p>
<div>
<p class="MsoNormal" style="background:white"><span style="font-family:"Calibri",sans-serif;color:black">OS Name: Microsoft Windows 8.1 Pro
<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="font-family:"Calibri",sans-serif;color:black">Version: 6.3.9600 Build 9600<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="font-family:"Calibri",sans-serif;color:black">OS Manufacturer: Microsoft Corporation
<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="font-family:"Calibri",sans-serif;color:black">System Manufacturer: Dell Inc.
<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="font-family:"Calibri",sans-serif;color:black">System Model: Precision T1700<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="font-family:"Calibri",sans-serif;color:black">System Type: x64-based PC<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="font-family:"Calibri",sans-serif;color:black">Processor Intel(R) Core(TM) i7-4790 CPU @ 3.60GHz, 3592 Mhz, 4 Core(s), 8 Logical Processor(s)
<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="font-family:"Calibri",sans-serif;color:black">Installed Physical Memory (RAM): 32.0 GB
<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="font-family:"Calibri",sans-serif;color:black">Total Virtual Memory: 36.7 GB<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="font-family:"Calibri",sans-serif;color:black">Display adapter: NVIDIA Quadro K620<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="font-family:"Calibri",sans-serif;color:black"><o:p> </o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="font-family:"Calibri",sans-serif;color:black">Note: I am not using QVTKWidget2. Kindly give some feedback as early as possible.<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="font-family:"Calibri",sans-serif;color:black"><o:p> </o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="font-family:"Calibri",sans-serif;color:black">Thank You<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="font-family:"Calibri",sans-serif;color:black"><o:p> </o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="font-family:"Calibri",sans-serif;color:black">Warm Regards<o:p></o:p></span></p>
</div>
<div>
<div>
<p style="background:white"><span style="font-family:"Calibri",sans-serif;color:black">Rakesh Patil<o:p></o:p></span></p>
<p style="background:white"><span style="font-family:"Calibri",sans-serif;color:black"><o:p> </o:p></span></p>
</div>
</div>
</div>
</div>
<p class="MsoNormal" style="margin-bottom:12.0pt;background:white"><span style="font-family:"Calibri",sans-serif;color:black"><br>
_______________________________________________<br>
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<p class="MsoNormal" style="background:white"><span style="font-family:"Calibri",sans-serif;color:#888888"><br>
<br clear="all">
<o:p></o:p></span></p>
<div>
<p class="MsoNormal" style="background:white"><span style="font-family:"Calibri",sans-serif;color:#888888"><o:p> </o:p></span></p>
</div>
<p class="MsoNormal" style="background:white"><span style="font-family:"Calibri",sans-serif;color:#888888">--
<o:p></o:p></span></p>
<div>
<p class="MsoNormal" style="background:white"><span style="font-family:"Calibri",sans-serif;color:#888888">Ken Martin PhD
<o:p></o:p></span></p>
<div>
<p class="MsoNormal" style="background:white"><span style="font-family:"Calibri",sans-serif;color:#888888">Chairman & CFO<br>
Kitware Inc.<br>
28 Corporate Drive<br>
Clifton Park NY 12065<br>
<a href="tel:518%20371%203971" target="_blank">518 371 3971</a> <o:p></o:p></span></p>
<div>
<p class="MsoNormal" style="background:white"><span style="font-family:"Calibri",sans-serif;color:#888888"><o:p> </o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="font-size:10.0pt;font-family:"Tahoma",sans-serif;color:#888888">This communication, including all attachments, contains confidential and legally privileged information, and it is intended only for the
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</div>
</div>
</div>
</div>
</blockquote>
</div>
<p class="MsoNormal" style="background:white"><span style="font-family:"Calibri",sans-serif;color:#888888"><br>
<br clear="all">
</span><span class="hoenzb"><o:p></o:p></span></p>
<div>
<p class="MsoNormal" style="background:white"><o:p> </o:p></p>
</div>
<p class="MsoNormal" style="background:white"><span class="hoenzb"><span style="font-family:"Calibri",sans-serif;color:#888888">--
</span><o:p></o:p></span></p>
<div>
<p class="MsoNormal" style="background:white"><span style="font-family:"Calibri",sans-serif;color:#888888">Ken Martin PhD
</span><o:p></o:p></p>
<div>
<p class="MsoNormal" style="background:white"><span style="font-family:"Calibri",sans-serif;color:#888888">Chairman & CFO<br>
Kitware Inc.<br>
28 Corporate Drive<br>
Clifton Park NY 12065<br>
<a href="tel:518%20371%203971" target="_blank">518 371 3971</a> <o:p></o:p></span></p>
<div>
<p class="MsoNormal" style="background:white"><span style="font-family:"Calibri",sans-serif;color:#888888"><o:p> </o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="font-size:10.0pt;font-family:"Tahoma",sans-serif;color:#888888">This communication, including all attachments, contains confidential and legally privileged information, and it is intended only for the
use of the addressee. Access to this email by anyone else is unauthorized. If you are not the intended recipient, any disclosure, copying, distribution or any action taken in reliance on it is prohibited and may be unlawful. If you received this communication
in error please notify us immediately and destroy the original message. Thank you.</span><span style="font-family:"Calibri",sans-serif;color:#888888"><o:p></o:p></span></p>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</blockquote>
</div>
<p class="MsoNormal"><span style="color:#888888"><br>
<br clear="all">
</span><span class="hoenzb"><o:p></o:p></span></p>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<p class="MsoNormal"><span class="hoenzb"><span style="color:#888888">-- </span><o:p></o:p></span></p>
<div>
<p class="MsoNormal"><span style="color:#888888">Ken Martin PhD </span><o:p></o:p></p>
<div>
<p class="MsoNormal"><span style="color:#888888">Chairman & CFO<br>
Kitware Inc.<br>
28 Corporate Drive<br>
Clifton Park NY 12065<br>
<a href="tel:518%20371%203971" target="_blank">518 371 3971</a> <o:p></o:p></span></p>
<div>
<p class="MsoNormal"><span style="color:#888888"><o:p> </o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Tahoma",sans-serif;color:#888888">This communication, including all attachments, contains confidential and legally privileged information, and it is intended only for the use of the addressee.
Access to this email by anyone else is unauthorized. If you are not the intended recipient, any disclosure, copying, distribution or any action taken in reliance on it is prohibited and may be unlawful. If you received this communication in error please notify
us immediately and destroy the original message. Thank you.</span><span style="color:#888888"><o:p></o:p></span></p>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</blockquote>
</div>
<p class="MsoNormal"><br>
<br clear="all">
<o:p></o:p></p>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<p class="MsoNormal">-- <o:p></o:p></p>
<div>
<p class="MsoNormal">Ken Martin PhD<o:p></o:p></p>
<div>
<p class="MsoNormal">Chairman & CFO<br>
Kitware Inc.<br>
28 Corporate Drive<br>
Clifton Park NY 12065<br>
518 371 3971<o:p></o:p></p>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Tahoma",sans-serif">This communication, including all attachments, contains confidential and legally privileged information, and it is intended only for the use of the addressee. Access to this
email by anyone else is unauthorized. If you are not the intended recipient, any disclosure, copying, distribution or any action taken in reliance on it is prohibited and may be unlawful. If you received this communication in error please notify us immediately
and destroy the original message. Thank you.</span><o:p></o:p></p>
</div>
</div>
</div>
</div>
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