Hi Rafa, thanks.. i used your suggestion and it works.
my only problem now is that the RTT i have created generates a GL_LUMINANCE image, which format do I use? I would like to load and use this texture again as luminance texture. any suggestions, Peter On Tue, Aug 25, 2009 at 12:25 PM, Rafa Gaitan<rafa.gai...@gmail.com> wrote: > 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 > -- 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