Hi Stephan, This type of issue isn't something that others can really help with, there are simply too many unknowns. It could be a driver bug, a problem with your shaders, a hardware problem, an OS problem, a problem in the OSG, a problem in your application. Even if you have everything in front of you and able to re-produce it's still hard. The best we can do is make suggestions on possible things you can look at to diagnose what might be amiss.
First thing I'd do is see if there are any GL debugging tools available on your platform. Second thing would be to simplify your application, data and shaders to see when things break. Third, try different hardware, drivers, OS etc. Robert. On 2 March 2015 at 17:14, Steven Powers <stevenapow...@gmail.com> wrote: > Hi, I'm using the compute SSBO technique to handle a particle system. > > I have everything working but in some cases the compute shader stops > functioning and the particle system freezes. This seems to happen when a > particular geometry in the scene is drawn. If the geometry is culled the > particle system works just fine. > > The scene graph looks like this: > > -Group > +computeNode (with the SSBO and compute shader attached) > - Group > + rendering particle system with geom/vert/frag shaders > attached > + test geometry (readNodeFile(test.osg)) > > > If the test geometry is off screen the computeNode functions fine. If it > is on screen the computeNode no longer runs the compute shader. > > Also, if I attach a static geometry (read from a file) to the computeNode > this problem no longer occurs. Even if that geometry is loaded from the > same file as the test geometry. > > When it works the scene graph looks like this: > > -Group > +computeNode (with the SSBO and compute shader attached) > - Group > + rendering particle system with geom/vert/frag shaders > attached > - test geometry (readNodeFile(test.osg)) > + test geometry (readNodeFile(test.osg)) > > > Thank you! > > Cheers, > Steven > > ------------------ > Read this topic online here: > http://forum.openscenegraph.org/viewtopic.php?p=62913#62913 > > > > > > _______________________________________________ > osg-users mailing list > osg-users@lists.openscenegraph.org > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org >
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