Hi, I compared 2 different (release) versions of my application and older version have very very good performance On both I am using OSG 3.2.0 with VBO (not FBOs as I said previously, sorry) and display lists with Qt 4.8.4. I am using the same PCs (and drivers) for the comparison and I have similar performance degradation on a PC with a NVidia Quadro (last driver) and a entry level AMD card (last driver)
The obvious conclusion is that it is something I changed in my code but: 1- framerate go up and down without modifing the scene or the camera 2- I did not modify the render cycle/code (I have just overwritten Viewer::frame adding trivial/fast code) 3- After activating default on screen diagnostics (as in attached screenshot), framerate drops down dramatically (not in old application). So this seems not related to my code. I wonder if there is some settings (eg. on Node or CompositeView) I may have changed that can drop down performance. For example I recently set data variance on all nodes as DYNAMIC but I do not think this can be a problem. Meanwhile I am doing some tests to see if problem is related to Qt but looking at point 3 above Qt seems not the cause. Thank you. Ale ------------------ Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=57842#57842 _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
