Hi Robert, yes it does. However it just pass the visitor down to the scene graph (in this case it must be a graph of units). If the unit graph wasn't initialized before, then it use it's own visitor implementation to setup subgraph. It doesn't change the visitor content or anything else.
I am using osgPPU for all of my graphic application and there the particles do just work fine. I will test a simple scene with particles by adding them into any example from the osgPPU examples. Let see what if I could recreate the error Alex has found. cheers, art --- Robert Osfield <[EMAIL PROTECTED]> schrieb am Mi, 17.9.2008: > Von: Robert Osfield <[EMAIL PROTECTED]> > Betreff: Re: [osg-users] osgParticle and osgPPU not compatible > An: "OpenSceneGraph Users" <[email protected]> > Datum: Mittwoch, 17. September 2008, 17:00 > Hi Alex and Art, > > Does osgPPU::Processor do anything to the update/event > traversals? > > Robert. > > On Wed, Sep 17, 2008 at 3:29 PM, alexandre amyot murray > <[EMAIL PROTECTED]> wrote: > > Hi Art and Robert, > > > > First of all I dont use my own viewer class, I use > osgViewer. I initialize > > the viewer camera like this to support osgPPU : > > > > // Set single thread model > > > viewer_.setThreadingModel(osgViewer::Viewer::SingleThreaded); > > > > // Set the main window position and size > > osg::ref_ptr<osg::GraphicsContext::Traits> > traits = new > > osg::GraphicsContext::Traits; > > traits->x = > windowProperties_.winXPos_; > > traits->y = > windowProperties_.winYPos_; > > traits->width = > windowProperties_.winWidth_; > > traits->height = > windowProperties_.winHeight_; > > traits->windowDecoration = false; > > traits->doubleBuffer = true; > > traits->sharedContext = 0; > > > > // Set the graphics context for the camera > > osg::ref_ptr<osg::GraphicsContext> gc = > > > osg::GraphicsContext::createGraphicsContext(traits.get()); > > gc->setClearColor( osg::Vec4(0.0f, 0.0f, 0.0f, > 1.0f) ); > > gc->setClearMask( GL_COLOR_BUFFER_BIT | > GL_DEPTH_BUFFER_BIT ); > > gc->clear( ); > > > viewer_.getCamera()->setGraphicsContext(gc.get()); > > > > // Set the viewport > > viewer_.getCamera()->setViewport( > viewportProperties_.viewportXPos_, > > > viewportProperties_.viewportYPos_, > > > viewportProperties_.viewportWidth_, > > > viewportProperties_.viewportHeight_ ); > > > > > > // Set the projection matrix as perspective > > double aspectRatio; > > if( > > > viewportProperties_.viewportWidth_/viewportProperties_.viewportHeight_ > >= > > 1.0 ) > > aspectRatio = > > > viewportProperties_.viewportWidth_/viewportProperties_.viewportHeight_; > > else > > aspectRatio = > > > viewportProperties_.viewportHeight_/viewportProperties_.viewportWidth_; > > > > > viewer_.getCamera()->setProjectionMatrixAsPerspective( > > cameraProperties_.cameraFovy_, > > > aspectRatio, > > > > cameraProperties_.cameraZNear_, > cameraProperties_.cameraZFar_ ); > > > > // Positioning the camera > > osg::Matrix camTrans; > > camTrans.makeTranslate( > cameraProperties_.cameraPos_.x(), > > cameraProperties_.cameraPos_.y(), > -cameraProperties_.cameraPos_.z() ); > > viewer_.getCamera()->setViewMatrix( camTrans ); > > > > // tell the camera to use OpenGL frame buffer > object where supported. > > > > > viewer_.getCamera()->setRenderTargetImplementation(osg::Camera::FRAME_BUFFER_OBJECT); > > > > // create texture to render to > > osg::Texture* texture = createRenderTexture( > > viewportProperties_.viewportWidth_, > viewportProperties_.viewportHeight_, > > false ); > > osg::Texture* depthTexture = createRenderTexture( > > viewportProperties_.viewportWidth_, > viewportProperties_.viewportHeight_, > > true); > > > > // attach the texture and use it as the color and > depth buffer. > > > viewer_.getCamera()->attach(osg::Camera::COLOR_BUFFER, > texture); > > > viewer_.getCamera()->attach(osg::Camera::DEPTH_BUFFER, > depthTexture); > > > > Ok then I build my particle scene using osgParticle. I > use a ModularEmitter > > for the placer, shooter and counter. > > > > Finally I set the osgPPU::Processor and attach all the > unit I need for the > > shader rendering. Then I set the viewer scene data and > start the main loop > > which look like this : > > > > osg::Group * rootGroupNode = new osg::Group(); > > rootGroupNode->addChild( myParticleScene ); > > rootGroupNode->addChild( myOsgPpuProcessor ); > > viewer_.setSceneData( rootGroupNode_.get() ); > > > > while (!viewer_.done()) > > { > > if( checkForNewMedias() ) > > updateSceneWithMedia(); > > > > updateScene(); > > > > // Draw the next frame. > > rendering_ = true; > > viewer_.frame(); > > rendering_ = false; > > > > Sleep(1); > > } > > > > And the application crash with the error message I > provide you. If I comment > > these lines in my viewer application : > > > > // Set single thread model > > > //viewer_.setThreadingModel(osgViewer::Viewer::SingleThreaded); > > > > // tell the camera to use OpenGL frame buffer > object where supported. > > > > > //viewer_.getCamera()->setRenderTargetImplementation(osg::Camera::FRAME_BUFFER_OBJECT); > > > > // create texture to render to > > //osg::Texture* texture = createRenderTexture( > > viewportProperties_.viewportWidth_, > viewportProperties_.viewportHeight_, > > false ); > > //osg::Texture* depthTexture = > createRenderTexture( > > viewportProperties_.viewportWidth_, > viewportProperties_.viewportHeight_, > > true); > > > > // attach the texture and use it as the color and > depth buffer. > > > //viewer_.getCamera()->attach(osg::Camera::COLOR_BUFFER, > texture); > > > //viewer_.getCamera()->attach(osg::Camera::DEPTH_BUFFER, > depthTexture); > > > > And don't attach the osgPPU::Processor to my > rootGroupNode, everything works > > well. > > > > Hope I gave you enough informations, if you need more > I'll provide you. > > > > Thanks > > > > Alex > > > > > > > > > > _______________________________________________ > > 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 __________________________________________________ Do You Yahoo!? Sie sind Spam leid? Yahoo! Mail verfügt über einen herausragenden Schutz gegen Massenmails. http://mail.yahoo.com _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
