Hi Terry, >From your email it's not clear the exact camera/graphics window set up. It does kinda sound like all the cameras share the same graphics window, is this right? If so then you'll only ever be able to have one DrawThread. If you have three slave Camera then in theory you should be able to have six CameraThread. However, from you diagram it seems that you have cameras nested within each other, rather than all the slaves being siblings, and you suggestion that getCameras() returns just one camera suggest that all the cameras are in the scene graph (or perhaps there is a bug).
Since there is really too little specific information on your setup I can't really provide any insight or advice. You could explain your motivation for splitting the view up into so may cameras, the number of contexts you are driving, if all the cameras are collaborating on the same view. Also how are you adding the cameras into the setup? Perhaps some code would help. Robert. On Tue, May 27, 2008 at 11:17 PM, Terry Welsh <[EMAIL PROTECTED]> wrote: > Hi, > I just tried to replace SceneView with osgViewer::Viewer to take > advantage of threading. My scene has 3 views of the same scene with > cameras set up like this: > > Viewer camera > / | \ > far_cam1 far_cam2 far_cam3 > | | | > near_cam1 near_cam2 near_cam3 > (POST_RENDER) (POST_RENDER) (POST_RENDER) > \ | / > scene > > The viewer camera is only used for clearing. The "near" and "far" > cameras are used to render different depth ranges of my scene to > prevent a lot of z-fighting; each pair of near/far cameras draws into > the same viewport. > > With no threading, I use 1 core at 100%. With > CullThreadPerCameraDrawThreadPerContext I use 1 core at 100% and > another core at about 25%. There are still 2 cores that are nearly > unused. The other threading modes do not appear to help. > > I tried to trace through the threading code in ViewerBase a little. > In "cameras" (the vector of osg::Cameras) there is only 1 camera, but > I expected to find 7. Is it impossible to have 7 cull threads in this > situation, or am I just setting something up wrong? > - Terry > _______________________________________________ > osg-users mailing list > osg-users@lists.openscenegraph.org > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org > _______________________________________________ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
