Hi Daniel,
the text HUD shows up correctly.
Only the wallpaper is missing. I create it by a separate camera in
PRE-RENDERmode. Here ist the code snippplet:
===============================================
/** This method creates a HUD-Window for a wallpaper */
void Cl_3Dview_osg::createWallpaper(const QString &_path) {
osgViewer::Viewer::Windows windows;
view->getWindows(windows);
if (windows.empty()) return;
// ===========================================
// Create camera
// ===========================================
// create a camera to set up the projection and model view matrices,
// and the subgraph to drawn in the HUD
osg::Camera* camera = new osg::Camera;
// set the projection matrix
camera->setProjectionMatrix(osg::Matrix::ortho2D(0,1,0,1));
camera->setProjectionResizePolicy(osg::Camera::FIXED);
// set the view matrix
camera->setReferenceFrame(osg::Transform::ABSOLUTE_RF);
camera->setViewMatrix(osg::Matrix::identity());
// only clear the depth buffer
camera->setClearMask(GL_COLOR_BUFFER_BIT |
GL_DEPTH_BUFFER_BIT);
// draw subgraph before main camera view.
camera->setRenderOrder(osg::Camera::PRE_RENDER);
// we don't want the camera to grab event focus from
// the viewers main camera(s).
camera->setAllowEventFocus(false);
// set up cameras to rendering on the first window available.
camera->setGraphicsContext(windows[0]);
camera->setViewport(0,0,windows[0]->getTraits()->width,
windows[0]->getTraits()->height);
view->addSlave(camera, false);
wallpaperCamera = camera;
if (!_path.isEmpty())
setWallpaper(_path);
// The main camera should not wipe out the wallpaper
view->getCamera()->setClearMask(GL_DEPTH_BUFFER_BIT);
}
===============================================
Is there any better method to do this job, maybe by a separate node in a low
numbered render bin? But what about the transformations then and the resize
handling of the viewport?
Thank you!
Cheers,
Werner
------------------
Read this topic online here:
http://forum.openscenegraph.org/viewtopic.php?p=53334#53334
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