Hi Dirk > Could you put the programs and the models up there, too? That would > allow me to try to reproduce it and see what's going on.
Sure, you can find the models and the source code here: http://vis.uni-koeln.de/FrameTest/TieFighter.rar > Looking at the framerates it looks like you have sync to vblank enabled. > That is generally a bad idea for benchmarking, as small differences in > actual speed can have a very big effect on framerate. Try to rerun the > tests with that turned off. Ok, I will try that. To be honest I never heared about it. I guess it's someting related to the graphics card? > I'm surprised about the loading times for obj. That looks quadratic to > me, which I wouldn't have expected. If you could put the models up that > would be helpful. I was surprised too! The biggest file needs more than 8 hours to be loaded! I created the wrl-files by referencing to the same tie.wrl 729 times, each time with a slightly different translation. Then I loaded the files into 3DMax 8 and exported them to obj. This is why the tie792.wrl is just a few KB small, while the corresponding tie792.obj is about 180 MB big. However, I used exactly the same files for OpenSG with obj and OpenSceneGraph. > Just to rule out simple things: I assume you used optimized libs for > everything? Yes I did. > The tie is a pretty small model, i.e. few polygons/node, which leads to > putting more weight on traversal than rendering. In that arena I'm not > very surprised OSG has an advantage, as it has a simpler structure. I > wouldn't expect a factor of two, but that might be caused by the vblank > issue. I also think I should repeat the test with another model. > I would like to reproduce the tests, so if you could put your code and > models somewhere, I'd appreciate it. Note that I'm at VR in Charlotte, > so I won't be able to look at it before next Thursday, and even that is > tight because I'm leaving again Friday at noon (busy times... ;). That would be great! Have fun in Charlotte, Daniel -- Daniel Wickeroth Moltkestraße 88 50674 Köln Home 0221 3569325 Work 0221 478 86504 Mobil 0176 700 40 252 ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys-and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV _______________________________________________ Opensg-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/opensg-users
