Hi, Trystan You should do this in thread with active gl context, f.e. during cull traversal or rendering traversals.
Cheers, Sergey. 22.04.2011, 05:54, "Trystan Larey-Williams" <[email protected]>: > Hi all, > > I'm looking for a way to quickly read parts of images into parts of 2D > textures. For instance, given a source rect for an image and a destination > rect for the texture I want to get just the source rect into the dest rect > with no scaling/resizing etc. > > I thought I may be able to do something like the snippet below. However, this > code crashes on copyTexSubImage. Am I on the right track at all here? > > img = osgDB::readImageFile("image.png"); > pbo = new osg::PixelBufferObject(img.get()); > texture = new osg::Texture2D; > texture->setTextureSize(img->s(), img->t()); > state = new osg::State; > state->setContextID(viewer.getCamera()->getGraphicsContext()- > >getState()->getContextID()); > state->bindPixelBufferObject(pbo.get()); > texture->copyTexSubImage2D(*state, 0, 0, 0, 0, img->s(), img->t()); > > Thanks in advance, > Trystan > > ------------------ > Read this topic online here: > http://forum.openscenegraph.org/viewtopic.php?p=38722#38722 > > _______________________________________________ > osg-users mailing list > [email protected] > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
