<div dir="ltr">Hi Ken,<div> That is a useful link. </div><div><br></div><div>My Laptop has an Intel HD Graphics 3000 and NVIDIA GeForceGT 540M. So the Intel card only supports OpenGL 3.1 whilst the NVidia card supports OpenGL4.5 and Open CL1.1</div><div>It seems the NVidia card is supporting all the required extensions but not the Intel card.</div><div><br></div><div>Regards</div><div> Andrew</div></div><div class="gmail_extra"><br><div class="gmail_quote">On Tue, Jun 23, 2015 at 10:37 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:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div lang="EN-US" link="blue" vlink="purple"><div><p class="MsoNormal"><a name="14e206c90f6444c4__MailEndCompose"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Morning Andrew,</span></a></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"> </span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Yes, for laptops with multiple graphics options you probably want to go with the dedicated graphics chip. Having said that, recent Intel chips should work with VTK. This page provides more detail if you expand the 4<sup>th</sup>/3<sup>rd</sup> generation sections, etc.</span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"> </span></p><p class="MsoNormal"><a href="http://www.intel.com/support/graphics/sb/CS-033757.htm" target="_blank"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif"">http://www.intel.com/support/graphics/sb/CS-033757.htm</span></a><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"></span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"> </span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Intel 2500, 4000, 4200, 4400, 4600, 5000, 5100, 5200 and later should all support OpenGL 3.2. Intel 3000/2000/HD Graphics support 2.1 but not 3.2, but I’m not sure if they provide the required extensions.</span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"> </span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Thanks</span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Ken</span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"> </span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Ken Martin PhD</span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Chairman & CFO</span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Kitware Inc.</span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">28 Corporate Drive</span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Clifton Park NY 12065</span></p><p class="MsoNormal"><a href="mailto:ken.martin@kitware.com" target="_blank"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:blue">ken.martin@kitware.com</span></a><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"></span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><a href="tel:518%20881-4901" value="+15188814901" target="_blank">518 881-4901</a> (w)</span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><a href="tel:518%20371-4573" value="+15183714573" target="_blank">518 371-4573</a> (f)</span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"> </span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">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><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"> </span></p><p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> vtk-developers [mailto:<a href="mailto:vtk-developers-bounces@vtk.org" target="_blank">vtk-developers-bounces@vtk.org</a>] <b>On Behalf Of </b>Andrew Maclean<br><b>Sent:</b> Tuesday, June 23, 2015 3:00 AM<br><b>To:</b> VTK Developers; vtk<br><b>Subject:</b> [vtk-developers] For those using OpenGL2 in the VTK build.</span></p><div><div class="h5"><p class="MsoNormal"> </p><div><div><p class="MsoNormal">Hi All</p></div><div><p class="MsoNormal"> </p></div><p class="MsoNormal">On my laptop which has an Intel and NVidiia card, I just discovered that my VTK programs were crashing with this message:</p><div><div><p class="MsoNormal"> </p></div><div><p class="MsoNormal">"Warning: In \VTK\Rendering\OpenGL2\vtkOpenGLRenderWindow.cxx, line 426</p></div><div><p class="MsoNormal">vtkWin32OpenGLRenderWindow (0000000604268430): VTK is designed to work with OpenGL version 3.2 but it appears it has been given a context that does not support 3.2. VTK will run in a compatibility mode designed to work with OpenGL 2.1 but some features may not work.</p></div><div><p class="MsoNormal"> </p></div><div><p class="MsoNormal">ERROR: In\ VTK\Rendering\OpenGL2\vtkShaderProgram.cxx, line 366</p></div><div><p class="MsoNormal">vtkShaderProgram (0000000607E3F060): 1:</p></div><div><p class="MsoNormal"> </p></div><div><p class="MsoNormal">...</p></div><div><p class="MsoNormal">ERROR: In \VTK\Rendering\OpenGL2\vtkShaderProgram.cxx, line 367</p></div><div><p class="MsoNormal">vtkShaderProgram (0000000607E3F060): ERROR: 0:20: '' : extension 'GL_EXT_gpu_shader4' is not supported</p></div><div><p class="MsoNormal">"</p></div><div><p class="MsoNormal"> </p></div><div><p class="MsoNormal">To get rid of this error you must set the NVidia graphics processor as default.</p></div><div><p class="MsoNormal"> </p></div><div><p class="MsoNormal">To do this:</p></div><div><p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Verdana","sans-serif";color:#070f14">Go to the NVIDIA Control Panel (right-click on the desktop), then:<br>3D Settings-> Manage 3D settings<br>The Tab "Preferred graphics processor " , select<br>High performance NVidia processor</span></p></div><div><p class="MsoNormal"> </p></div><div><p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Verdana","sans-serif";color:#070f14">Regards</span></p></div><div><p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Verdana","sans-serif";color:#070f14"> Andrew</span></p></div><p class="MsoNormal">-- </p><div><p class="MsoNormal">___________________________________________<br>Andrew J. P. Maclean<br><br>___________________________________________</p></div></div></div></div></div></div></div>
</blockquote></div><br><br clear="all"><div><br></div>-- <br><div class="gmail_signature">___________________________________________<br>Andrew J. P. Maclean<br><br>___________________________________________</div>
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