Hi Ale, Please update to 3.6.1 as it contains a change to how Drawable sets up display lists and VBO's to avoid creating VBO's inside as this was causing an issue for some users on certain hardware/drivers.
Robert. On 30 May 2018 at 16:13, Ale Maro <[email protected]> wrote: > Hi all, > > we recently updated our project from OSG 3.4.0 + Qt 5.5 to OSG 3.6.0 + Qt > 5.11. > We noticed a framerate slowdown without changing our code. > > After some investigation we found that using VBO as we did until now the > performance is bad but using display lists performance are equal or better > than before. > > The bottleneck seems to be in Draw step (in my test using VBO on screen > statistics shows Draw timing greater than 100 since other timings are 0.3) > > We choose to use VBO in the past becouse we potentially have very big > geometries in a single node so choosing VBO we can increment visualization > performance at first frame and avoid memory problems. > > Now we saw very different code inside Drawable.cpp for display list > management. So I guess if our choice of using VBO is still valid or do you > think we can switch to display lists? > > > On the other side did someone experience this kind of problem with Qt 5.11 > (or a version greater than 5.5)? Maybe there is a solution changing some Qt > settings. > > Thank you in advance. > > Best regards > Ale > > ------------------ > Read this topic online here: > http://forum.openscenegraph.org/viewtopic.php?p=73896#73896 > > > > > > _______________________________________________ > 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
