HI Jason, You could try disabling the vertex array extension for Intel via the the osg::setGLExtensionDisableString()
>From include/osg/GL /** Set a list of extensions to disable for different OpenGL renderers. This allows * OSG applications to work around OpenGL drivers' bugs which are due to problematic extension support. * The format of the string is: * "GLRendererString : ExtensionName, ExtensionName; GLRenderString2 : ExtensionName;" * An example of is : "SUN_XVR1000:GL_EXT_texture_filter_anisotropic" * The default setting of GLExtensionDisableString is obtained from the OSG_GL_EXTENSION_DISABLE * environmental variable. */ extern OSG_EXPORT void setGLExtensionDisableString(const std::string& disableString); Longer term it might be worth us developing a software/hardware configuration file system, that can provide different profiles for different hardware/drivers. Robert. On Thu, Aug 14, 2008 at 3:42 PM, Jason Beverage <[EMAIL PROTECTED]> wrote: > Hi all, > > I recently updated our product to use the --terrain flag in > VirtualPlanetBuilder to increase the speed of our database creation and > things are working wonderfully except for on the machines that have the > Intel 945GM chipset which are crashing. > > I've narrowed the problem down to the fact that the 945GM doesn't seem to > like using VBO, which is enabled in GeometryTechnique.cpp. If I revert back > to not using the --terrain option, which does not use VBO, things work just > fine. Also, if I set the environment variable > OSG_DATABASE_PAGER_DRAWABLE=VertexArrays, things also work just fine. > > I would like to not have to revert back to not using the --terrain option > since the performance increases on machines that support VBO are so > substantial but I also don't want specific users to have to modify the > environment variable. > > In theory, we can know whether or not VBO is supported by the graphics card > by using the State::isVertexBufferObjectSupported(), but the 945GM must be > incorrectly reporting that it does support VBO. > > Does anyone have any suggestions on what I should do in this situation? > > Thanks! > > Jason > > _______________________________________________ > osg-users mailing list > [email protected] > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org > > _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
