Hi Joseba, The OSG already pre compiles textures when the graphics context is realized as long as you've assigned the scene graph prior to realizing the windows. If you load and assign the scene graph afterwards then you'll need to do a precompile step then, but if you already using the PagedLOD and the DatabasePager it'll already be doing this pre-compile step for you. My guess is that this precompile is already done so redoing won't make any difference.
Now, there is more to keeping textures resident than just compiling them, and there more to avoiding frame drops that compiling textures, so... there is a lot left to look into to fix the frame drops. I know practically nothing about how you've composed your scene graph or your hardware so I can't add very much about what to look into next. Robert. On Thu, Nov 12, 2009 at 10:07 AM, Joseba Rodriguez <[email protected]> wrote: > Hi, > > I have some big scenes (just one ive file each one). After the viewer is > initialized i load one of these scenes (imagine a long road with curves) and > i make the camera go along a path. > The problem is that i notice some frame drops (peaks, mainly in curves, when > new geometry comes in view). When i make a second pass, this frame drops > disappear. I also used a small app for testing graphics memory and i saw that > in these peaks, graphics memory usagge grows, so i guess that the main > problem are textures being loaded in graphics card. > > Looking in the forum I found some interesting threads about using > GLObjectVisitor, but this didnt solve the problem. I dont know if i did > something wrong or just this was not the solution: > > struct CompileCallback : public osg::Camera::DrawCallback > { > virtual void operator() (const osg::Camera& camera) > { > osgUtil::GLObjectsVisitor gov; > const_cast<osg::Camera&>(camera).accept(gov); > } > }; > > view->getCamera()->setPreDrawCallback(new CompileCallback); > > > I also tried a solution given in this post: > http://forum.openscenegraph.org/viewtopic.php?t=3330 > > viewer->setIncrementalCompileOperation(new > osgUtil::IncrementalCompileOperation()); > > After viewer initialization (and before loadint the scene). The results where > just the same. > > Is there any way to preload textures in graphics card? Any other sugestion? > > > > Thank you! > > Cheers, > Joseba > > ------------------ > Read this topic online here: > http://forum.openscenegraph.org/viewtopic.php?p=19545#19545 > > > > > > _______________________________________________ > 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
