Can you help me i'm confusing;ican't install osg;i have a vsiual studio 2015,PLEASE HELP ME
Le mar. 23 juin 2020 à 19:10, Robert Osfield <[email protected]> a écrit : > I can;t say what the leak will be from the code supply but I can say that > creating a dedicated viewer, rendering a frame, then destroying really > isn't an efficient way to go about generating a thumbnail image. Rather > than than debug a dubious approach I'd suggest you leave it and try another > lighter weight approach. > > The best approach is something I can't say at this point as I don't know > enough about your application and your needs for generating a thumbnail. > Is it a one off activity, something you do offline, something that is done > occasionally? How to go about things depends upon your usage case. > > As a general comment, creating an destroying objects on OpenGL and > consequently the OSG is expensive. It's far better to create once and > reuse, even if you don't reuse often. > > Also creating separate graphics context is very expensive, if you already > have a graphics context then the best thing to do for offscreen rendering > is to your a frame buffer object and render to texture. This way you can > minimize the amount of new GL objects being created for the task, W.r.t > running in a background thread, OpenGL isn't a multi-threaded API, you can > only multi-thread with multiple graphics context with t a thread per > context. It's only really suitable for mulitple GPU tasks. It's typically > far better to just add the work to the standard frame and run it as part of > your normal viewer. > > With the OSG you can toggle on/off render to texture by setting the > NodeMask of an osg::Camera. > > > -- > You received this message because you are subscribed to the Google Groups > "OpenSceneGraph Users" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To view this discussion on the web visit > https://groups.google.com/d/msgid/osg-users/a8394d4f-92a9-4736-b51f-34b5cf5bee9fn%40googlegroups.com > <https://groups.google.com/d/msgid/osg-users/a8394d4f-92a9-4736-b51f-34b5cf5bee9fn%40googlegroups.com?utm_medium=email&utm_source=footer> > . > -- You received this message because you are subscribed to the Google Groups "OpenSceneGraph Users" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/osg-users/CAL1iYi1F%3DLy2QqufefjAJODno1BAYRn19LuWuSiBbpCG9g2Rng%40mail.gmail.com.
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