-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Robert Osfield wrote: > Hi Joan, > > The problems you describe look to most likely to be issues with > display listing of the geometries. It could be that they are just > poorly conditioned datasets - one triangle per geometry is certainly > very very badly condidtioned and needs fixing to be able expect any > sensible performance level, or it could be that the models are simply > to big for the hardware/OGL driver to cope with. > > There might also be possibility of error in the data such as a > primitive index that is invalid. > > This is also just speculation though... > > Robert.
Robert, I think that there may be indeed some threading bug in the osgViewer. I have tested the files from Joan and if I view them using osgViewer, it starts up (no black screen) but hangs right away after displaying the first few frames or when I try to move the camera. This happens for all of the models here. If I do the same with osgproducerviewer, everything works and I am getting decent frame rates even - few hundreds FPS, even up to 1000 sometimes on my two 6800GS. The models are not that big, the largest has 117693 polygons and I am still getting 1000+ FPS with it with Producer. I have also checked the data files and the VRML files contain several meshes, few thousands triangles/quads each. Nothing extraordinary. I have experienced the hangs with osgViewer in our own application recently as well, but I couldn't reproduce them with the plain osgviewer binary, so I have ascribed it to some race condition in my code. Now these datafiles trigger it with plain viewer 100% each time on my PC. I am running a dual core Athlon (SMP machine) and the cards are configured using SLI, alternative frame rendering (AFR). Regards, Jan -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.7 (GNU/Linux) Comment: Using GnuPG with Mandriva - http://enigmail.mozdev.org iD8DBQFGxJomn11XseNj94gRAqtPAKCz0RKZOA2BXaq6FU9yLVAOorEK8ACff8RU Uwh0Ezf1pHDeaHDDKA8jmb0= =P9SG -----END PGP SIGNATURE----- _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
