QImage textureImg(static_cast(pb.data), pb.getWidth(), pb.getHeight(), QImage::Format_ARGB32) HwBuffer->lock(Ogre::v1::HardwareBuffer::HBL_DISCARD) Ĭonst Ogre::PixelBox &pb = hwBuffer->getCurrentLock() Ogre::v1::HardwarePixelBufferSharedPtr hwBuffer = overlayTexture_->getBuffer(0, 0) I hope that descripton is detailed enough. That way Qt can 'draw' onto an Ogre texture, which I then render using Ogres Overlay system. In short I bridge Qt and Ogre by using a HardwarePixelBuffer (an Ogre class) from which I get the raw pixeldata and render into that using a QImage. I ended up solving this problem by relying more on Ogre. The renderwindow is not resized with the widget just to show that the colorbar is being drawn behind (the widgets size goes to the border). The grayscale colorbar is drawn in the paintEvent of the Ogre widget. Is there a way to let the QPainter draw on top of the renderwindow? This works but the renderwindow is always on top. The desired solution will simply let me have a label (or any other widget) on top of the Ogre widget without creating a hole.Įdit: Some incorrect statements were removed.Įdit2: Probably not the proper way but rather than create a new post ill add to this.Īlternatively I could use the Ogre widgets Qpainter to paint things on top of the actual renderwindow from Ogre. In the top-right is an example of a QListWidget which I use to show selected meshes.Īgain any help is appreciated. Just to show that it is in fact a 'hole'. Two labels are used, the one on top has a transparent background the other a blue background. Here is a picture which hopefully explains whats going on.

Really looking for any hints or tips on what to try to find a fix for this, because I barely know where to begin when it comes to the interaction between Qt and 'external' Opengl. I really have no idea what is causing this issue but I'm leaning toward it being a Qt thing, which is why I am posting here instead of the Ogre forums. The parts of an overlaying widget which should be transparent makes a 'hole' in the Ogre widget.įor example a QLabel, which by default has a transparent background and only the text should show, will make a hole the size of its bounding box and show the color of the main window behind the Ogre widget. The problems arises when I try to place any kind of widget 'on top' of the Ogre widget. This part works great and it renders without any issues. I have created a widget which inherits QWidget and uses Ogre (graphics engine) to render onto the widget, by simply passing the QWidget window id. My question is regarding showing widgets on top of an opengl widget. First post here so let me know if I messed up in any way!

Is ogre engine still updated