Re: [osg-users] How to prepare LOD dataset from a large model file?
Hi, I havn't tested it, but with the simplifier you can create the differend LODs, then you can mount them together as a paged LOD model. Cheers, Torben -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=49204#49204 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] PagedLOD - How to not page a specific node ?
Hi, In my application, I display some very heavy models (about 100Mo of textures + 20 Mo of vertex) This model is created proceduraly, and I can control the level of detail for the geometry and the textures, so I build 5 PagedLod : from very simple model to full data resolution. My problem is about the most detailed level : this one is very heavy and I would like to never keep it in cache to avoid over memory usage. Is there any parameter to tweak on this PagedLod (priority, time stamp, minimum expiry time..) to get the following behaviour : - when this PagedLod is needed for display, it is loadded and displayed - when this PagedLod is no more needed for display, it is deleted from CPU memory and GPU memory, even if the OSG_MAX_PAGEDLOD is not reached Thank you! Cheers, Aurelien -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=49207#49207 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] PagedLOD - How to not page a specific node ?
- when this PagedLod is needed for display, it is loadded and displayed - when this PagedLod is no more needed for display, it is deleted from CPU memory and GPU memory, even if the OSG_MAX_PAGEDLOD is not reached For this particular node, you might attach a cull callback to the PagedLOD, and snoop on the PagedLOD settings on each frame. If it appears that a lower LOD is going to be displayed, and the higher LOD is still loaded, you could unload the higher LOD manually. I don't know for sure though if this is proper to do. At the very least, the reference counting system might still have a reference to it stored elsewhere in the DatabasePager, but I doubt this will happen. Even if it does, it just means the highest LOD won't get unloaded from memory, but it should cause no adverse effects. If the memory consumption does go down immediately as you hope, then the technique works. -- Chris 'Xenon' Hanson, omo sanza lettere. xe...@alphapixel.com http://www.alphapixel.com/ Training • Consulting • Contracting 3D • Scene Graphs (Open Scene Graph/OSG) • OpenGL 2 • OpenGL 3 • OpenGL 4 • GLSL • OpenGL ES 1 • OpenGL ES 2 • OpenCL Digital Imaging • GIS • GPS • Telemetry • Cryptography • Digital Audio • LIDAR • Kinect • Embedded • Mobile • iPhone/iPad/iOS • Android ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
