Hi Robert, Thank you for response.
There is a little problem. I'm currently doing a simulation project. All parameters ( including camera position and fovy, object position and size, and even texture size ) are assigned based on the real-world situation. And my job is to track the target pixel out of many other noise pixels. So zooming camera or object my not be a very good idea. I'd like to try to enable antialising and see what happens. Thanks. Mengyu robertosfield wrote: > Hi Mengyu, > > It's hard to say exactly why it's disappearing but my best guess would > be the aliasing of a sub pixel sized object is resulting to > appearing/disappearing. > > The way I'd tackle it would be to render the object to a texutre wth > the camera zoomed into to render the object at a large than pixel > size. Then render an oversize quad with this texture on and let > OpenGL mipmpa filtering of the texture handle the antialiasing for > you. This would be a form of impostor/image based rendering. > > Another approach would be to scale the object so it's not subpixel in sized. > > Robert. > ------------------ Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=55755#55755 _______________________________________________ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
