Hi Bart, This is a fairly specialised use case for osgOcean and wasn't really considered in the initial design. osgOcean uses a custom cull traversal within ocean scene which controls all of the prerender and postrender passes. I fear that it may be this cull traversal that is messing up your pbuffer context.
Take a look at the code in OceanScene in particular the cull traversal, maybe you'll be able to figure out a solution from that. Regards, K. On 6 November 2011 01:16, bart gallet <[email protected]> wrote: > Howdy all > > I am using OSG for generating synthetic environments for AI agents. The > one I am working on in particular flies over water, so using osgOcean seems > to be the right choice here. > > I have two views: one that chases the vehicle and one that is taken from > the vehicle's payload (pan-tilt-zoom camera). > > I have a third context, a pbuffer, that is assigned to a camera slaved > with the pan-tilt-zoom camera, so that I can easily ship the pixelbuffer to > CPU space where the AI processes the images (according to what the > pan-tilt-zoom camera sees). > > I have an issue though: for some reason the ocean scenery is not rendered > in the pbuffer but I do see it in my chase view and in my pan-tilt-zoom > view (to which my off screen camera is slaved). I just get the default > blueish-purpleish background (my pixel data is 33f33f33f33f33f....) in the > saved images. > > However, if instead of the ocean scene I use a terrain loaded from a > terrapage database, I am actually able to render the scene in my pbuffer. > > Does anybody know of an issue with rendering osgOcean off-screen? > > Also, I had to force my pan-tilt-zoom viewer to single threaded, because > otherwise it didn't work (Windows Error #170: [Screen #0] > GraphicsWindowWin32::makeCurrentImplementation() - Unable to set current > OpenGL rendering context. Reason: The requested resource is in use.). > > My system: Intel Core i7 CPU Q820, 8GB, Windows 7 (service pack1) NVIDIA > Quadro FX 1800M and using latest release version of OSG. > > > > Thank you! > > Cheers, > bart > > ------------------ > Read this topic online here: > http://forum.openscenegraph.org/viewtopic.php?p=43717#43717 > > > > > > _______________________________________________ > osg-users mailing list > [email protected] > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org >
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