Hi, Does anyone have experience with using OSG on the Intel HD Graphics 4000 hardware? I am having performance problems in my application with fairly simple scenes. I have several different models which are simple shapes like boxes, tubes, X's, etc. that are duplicated about 40 times each using MatrixTransforms. The bottleneck is in the Draw traversal. With this scene I am seeing a draw time of 55 ms on the HD Graphics, while on another PC with a Radeon X1550 card the draw time is 3.8 ms.
I've used OpenGL Extensions Viewer (http://www.realtech-vr.com/glview/) on both machines and according to that the HD Graphics only supports OpenGL 3.0/3.1, with no support for earlier versions. My development PC with the Radeon card supports 1.1-2.1. I'm currently using OSG 3.0.0, with a build that turned on OSG_GL1_AVAILABLE and OSG_GL2_AVAILABLE, but not OSG_GL3_AVAILABLE. Is it possible that using only GL3 would give better performance? One other thing I should mention is that I used gDebugger and their Teapot sample application performs better on the Intel HD Graphics than the Radeon card, which suggests to me that I'm not using the hardware correctly. Using alternate hardware is not an option at this time. ... Thank you! Cheers, Michael ------------------ Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=52393#52393 _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
