Hi Peter You can attach an image to the camera doing the rtt.
osg::Image *image = new osg::Image; image->allocateImage(tex_width, tex_height, 1, GL_RGBA, GL_UNSIGNED_BYTE); // attach the image so its copied on each frame. camera->attach(osg::Camera::COLOR_BUFFER, image); Rafa. On Tue, Aug 25, 2009 at 12:22 PM, Peter Wraae Marino<osgh...@gmail.com> wrote: > Hi Maxim , > > I believe the readPixels is reading from the framebuffer and not the > texture (or am I mistaken??) > remember a RTT usually means I have 2 or more cameras in my scene... > where one is used > to do the RTT... so this can lead to a question how would osg::Image > know which buffer to read from? > > Peter > > On Tue, Aug 25, 2009 at 12:16 PM, Maxim Gammer<maxgam...@gmail.com> wrote: >> Hi... >> >> osg::ref_ptr<osg::Image> image = new osg::Image; >> >> image->readPixels..... example >> >> if (osgDB::writeImageFile(*image,_filename)) >> >> { >> >> std::cout << "Saved screen image to `"<<_filename<<"`"<< std::endl; >> >> } >> >> 2009/8/25 Peter Wraae Marino <osgh...@gmail.com> >>> >>> Hi osgUsers, >>> >>> I have a question about texture to file. Currently I have render to >>> texture (RTT) and would like to save this texture to a file. Is there >>> a straight forward method of doing this? >>> >>> anyone? >>> >>> -- >>> Regards, >>> Peter Wraae Marino >>> >>> www.osghelp.com - OpenSceneGraph support site >>> _______________________________________________ >>> osg-users mailing list >>> osg-users@lists.openscenegraph.org >>> http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org >> >> >> >> -- >> Maxim Gammer >> >> >> _______________________________________________ >> osg-users mailing list >> osg-users@lists.openscenegraph.org >> http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org >> >> > > > > -- > Regards, > Peter Wraae Marino > > www.osghelp.com - OpenSceneGraph support site > _______________________________________________ > osg-users mailing list > osg-users@lists.openscenegraph.org > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org > -- Rafael Gaitán Linares Instituto de Automática e Informática Industrial http://www.ai2.upv.es Ciudad Politécnica de la Innovación Universidad Politécnica de Valencia _______________________________________________ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org