Sorry, I forgot to mention that. I'm using version 2.9.2 from the trunk. -Evan
On Fri, Apr 10, 2009 at 11:28 AM, Robert Osfield <[email protected]>wrote: > Hi Evan, > > Which version of the OSG are you using? > > Robert. > > On Fri, Apr 10, 2009 at 6:07 PM, Evan Andersen <[email protected]>wrote: > >> I'm working on an application which uses osgEarth to display terrain >> databases to users. I need the application to use as little CPU time as >> possible while still providing good user interaction, so I have set my >> viewer up so that it only renders when necessary. I keep a loop running >> that does the event and update traversals, but the renderingTraversals are >> only done when requestRedraw or requestContinuousUpdate have been called. >> This seems to work fine and to the user it generally beahves the same as >> when the scene is continuously rendered. However, when viewing the high >> detail levels it database pager often gets stuck in a loop when it keeps >> reloading a set of tiles over and over. You see the tiles alternately go >> blurry and then sharp again as the continously reload. >> >> I don't know what is causing this, but if I switch to continuous render, >> so that every event and update traversal is followed by a render, the >> problem does not occur. It seems to happen most often loading earth files >> with high-res data, like the yahoo or google test files, and then moving the >> camera around at the high detail levels. Unfortunately, I can't seem to >> replicate the problem with an animation path. I have attached a simple >> viewer I created that implements the rendering method I described above. >> The important code is in the viewer's frame function. I've pasted it below >> in case anyone can tell at a glance what I'm doing wrong. If someone who >> knows the database pager well could take a look at this I would really >> appreciate it. >> >> Thanks, >> Evan >> >> >> advance(simulationTime); >> >> eventTraversal(); >> >> // If the database pager is going to update the scene the render >> flag is >> // set so that the updates show up >> if(getDatabasePager()->requiresUpdateSceneGraph()) >> needsRender = true; >> >> updateTraversal(); >> >> if(needsRender || continuousUpdate) >> { >> renderingTraversals(); >> needsRender = false; >> } >> >> >> _______________________________________________ >> 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 > >
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