<html><body><div style="color:#000; background-color:#fff; font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:16px"><div dir="ltr" id="yui_3_16_0_1_1422908041496_3259">Hi all,</div><div id="yui_3_16_0_1_1422908041496_3320" dir="ltr"><br></div><div id="yui_3_16_0_1_1422908041496_3342" dir="ltr">vtkOpenGLExtensionManager::GetDriverGLVersion() returns:</div><div id="yui_3_16_0_1_1422908041496_3343" dir="ltr">"3.1.0 - Build 9.17.10.3517<br></div><div id="yui_3_16_0_1_1422908041496_3344" dir="ltr">vtkOpenGLExtensionManager::GetDriverGLRenderer() returns:</div><div id="yui_3_16_0_1_1422908041496_3326" dir="ltr">"Intel(R) HD Graphics 3000"<br></div><div id="yui_3_16_0_1_1422908041496_3319" dir="ltr"><br></div><div id="yui_3_16_0_1_1422908041496_3377" dir="ltr">However, as soon as my app tries to render a vtkSmartVolumeMapper, it complains:</div><div id="yui_3_16_0_1_1422908041496_3378" dir="ltr">"Error: In <snip>\vtkOpenGLExtensionManager.cxx, line 757</div><div id="yui_3_16_0_1_1422908041496_3395" dir="ltr">vtkOpenGLExtensionManager (<snip>): Extension GL_VERSION_1_2 could not be loaded."</div><div dir="ltr"><br></div><div dir="ltr">What is going on here? And is there an easy way to avoid this (would a simple CPU ray caster do the trick)?</div><div dir="ltr"><br></div><div dir="ltr">Thanks - Maarten<br></div><div id="yui_3_16_0_1_1422908041496_3318" dir="ltr"><br></div></div></body></html>