Hi Julien, aren't you supposed to attach a texture to the framebuffer ? I don't see a call to glFramebufferTexture2D or something equivalent in your code. In OSG term, it's the Camera::attach method that should be called.
-Fred ----- "Julien Valentin" <[email protected]> a écrit : > Hello, > > I would like to do RTT via FBO . > For this i overload osg::Geometry class > and reimplements the drawimplementation method > it now looks like it: > > Code: > > myGeometry::drawimplemetation(renderinfo)const{ > > (_ext)->glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, fbos[*_curst]); > glPushAttrib(GL_VIEWPORT_BIT | GL_COLOR_BUFFER_BIT); > osg::ref_ptr<osg::State> st=new osg::State; > //load the pass dependant stateset > st->apply(_StateSet[*_curst].get()); > renderInfo.setState(st); > glViewport(0,0,256, 256); > > // Set the render target > glDrawBuffer(GL_COLOR_ATTACHMENT0_EXT); > > // Render as normal here > // output goes to the FBO and it’s attached textures > osg::Geometry::drawimplementation(renderinfo); > > glPopAttrib(); > > //pingpong the render passes > if(*_curst==0)*_curst=1; > else *_curst=0; > } > > > > To do my prerender stuff i add a prerender camera that draw the stuff > > Code: > > _Camera->setClearMask(GL_DEPTH_BUFFER_BIT); > // projection and view > _Camera->setProjectionMatrix(osg::Matrix::ortho2D(0,_TextureHeight,0,_TextureHeight)); > _Camera->setProjectionMatrix(osg::Matrix::ortho2D(0,1,0,1)); > _Camera->setReferenceFrame(osg::Transform::ABSOLUTE_RF); > _Camera->setViewMatrix(osg::Matrix::identity()); > // viewport > _Camera->setViewport(0, 0, _TextureWidth, _TextureHeight); > _Camera->setRenderOrder(osg::Camera::PRE_RENDER,0); > > > > and an other camera that display the generated texture > > However I get an opengl error 0x506 > I think it's due to the camera that handle the preprocess pass cause i > don't know how to setup the render implementation as i overload it > during myGeometry::drawimplementation > > Can anyone give me an advice on how to do it ? > > ------------------ > Read this topic online here: > http://forum.openscenegraph.org/viewtopic.php?p=28539#28539 > > > > > > _______________________________________________ > 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
