Hi Vaclav, it's good to hear I'm not alone with this problem. It took me a while to understand it's nature so I could describe it here. You are right of course, once the HW memory is out, I'm back in trouble.
For incremental compilation I found two examples: osganalysis and osgthreadedterrain. Maybe they could serve as a starter if Nicks solution is not enough one day. Or I just buy a bigger card ;-) Cheers /Per On 3 September 2014 20:56, Vaclav Bilek <[email protected]> wrote: > Hi Nick & Per > > You have to reduce the amount of data transferred by the driver to the > card. I have been dealing with the same issue and the solution that worked > for me is to chop the data to smaller chunks and/or spread the GL compile > phase into more frames . To spread the number of GL compile call in case of > the OpenSceneGraph you have to modify it a bit to do this task. > > By the way the solution Nick mentioned works only if you have enough of > resources. Once your per frame data are bigger then the HW resources > available, the driver will do its own "magic" that causes the occasional > jerky movement/frame freezes. > > Have fun! > Vaclav > > > On 09/02/14 12:06, Trajce Nikolov NICK wrote: > > Hi Per, > > this is a trick from the old days from scenegraph managers like > Quantum3D OpenGVS. What they did to avoid this they preloaded the models at > the very beginning to let OpenGL compile objects and then used in the > scene. Maybe you can do the same way > > Nick > > > On Tue, Sep 2, 2014 at 2:03 PM, Cary, Karl A. <[email protected]> > wrote: > >> We have been having the same issue and haven't found a solution yet >> either, though it hasn't been our main priority yet. I will be following >> any responses closely and will contribute if I can. >> >> -----Original Message----- >> From: osg-users [mailto:[email protected]] On >> Behalf Of Robert Osfield >> Sent: Tuesday, September 02, 2014 8:01 AM >> To: OpenSceneGraph Users >> Subject: Re: [osg-users] First time render hiccup >> >> Hi Per, >> >> >> Stalls like you describe are typically when the graphics driver has to >> compile new OpenGL objects. There are range of things that can cause >> compilation to be slow, I haven't to head off line right now so will have >> to leave you with that hint... >> >> Robert. >> >> >> >> On 2 September 2014 12:27, Per Nordqvist <[email protected]> wrote: >> >> >> Hi all, >> >> >> Another open-ended question I'm afraid, but maybe someone >> has seen this before: >> >> >> I sometimes see hiccups (rendering pauses) in my driving >> simulation, >> >> I noticed it only happens with some vehicles, and only when they >> appear in the frustum for the first time. I wonder how to >> minimize this effect. >> >> Clues: >> -Once the model has been displayed there is no more hiccup. >> -Differerent models produce different hiccup delays (consistently) >> -Hiccup problem does not scale with .ive size or nr of polygons >> -In bad cases I can see the osgstats cull part go to zero for >> about 1 sec. >> -Using ProxyNode makes no difference. >> >> >> Suggestions? Some caching options I can try? >> Anything nasty to look for in the .ive models? >> >> >> (Most are 3DS format made by 3rd party, converted with osgconv, >> sorry I can't share them) >> >> >> I'm using OSG 3.01, compositeviewer, linux, Nvidia (different >> cards, same problem.) >> >> >> Thanks! >> >> >> >> /Per >> >> >> >> _______________________________________________ >> 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 >> >> > > > -- > trajce nikolov nick > > > _______________________________________________ > osg-users mailing > [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 > >
_______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
