Re: [osg-users] WPF and OpenGL popup window problem
Hi Himar, W.r.t. whether you are fool to use WPF or Qt or wxWidgets or whatever windowing technology you use: They are tools, you as programmer are the artisan. Sorry if it looked as if I were trying to imply anyone was a fool, that's not the case. I have used this same argument a lot in the past (and in the recent past on this very mailing list) hence the smiley at the end of my sentence... :-) It was meant as a joke. Thanks for the concrete info on this issue, it's useful to know about these issues. J-S -- __ Jean-Sebastien Guayjean-sebastien.g...@cm-labs.com http://www.cm-labs.com/ http://whitestar02.webhop.org/ ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] WPF and OpenGL popup window problem
Hi, i also use WPF, you are not the only one. The problem in WPF is surely the airspace. In WPF you can't have in the same window overlapping technologies. And if the window is a popup window, if it has transparency activated, you will also experiment the same problem (but this time it depends on the graphics card). This is a issue in Windows XP, not in Windows Vista. This is due to the windowing management. Windows XP has also a problem with transparent windows (overlay) for a long time ago, since it was not thought to render transparent windows (where the color of a pixel depends on more than one window). I think tooltips are window (like menu, context menu and so on), and the tooltip has transparency activated. W.r.t. whether you are fool to use WPF or Qt or wxWidgets or whatever windowing technology you use: They are tools, you as programmer are the artisan. I would choose the best to the project in hands. All have problems and limitations and different design philosophies, and... the list is long enough to be discussed ad limitum. Really, evangelism is the problem. Open Mind the solution. (My apologies to everyone, i'm not good writing english, and i don't want to offend anyone, this is just a personal point of view). Just kidding a bit... Thank you all the OSG community, i think all of you are open minders. Himar. ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] WPF and OpenGL popup window problem
Hi Brian, What you describe sounds like the WPF airspace limitation described here http://msdn.microsoft.com/en-us/library/aa970688.aspx. The short version is that each pixel can only belong to one render technology (WPF, DirectX, Win32 OpenGL). A workaround is to render your OSG scene off screen and give the bitmap to WPF. Brede On Wed, Mar 4, 2009 at 11:49 PM, Brian Stewart osgfo...@tevs.eu wrote: Hi, I have developed an application where I have an OSG window embedded in a windows application built with WPF. On certain Geforce cards there seems to be a bug where WPF popup windows (like menus) that have AllowTransparency set to true do not draw correctly over my OSG window. Basically whenever the OSG/OpenGL window updates, it overwrites all overlapping pixels, even if the popup is higher in the window manager's Z-order. I have isolated it to an issue with the OpenGL driver. It only occurs on Geforce cards, not Quadro cards (which is not surprising, since I've read the Geforce cards were optimized for DirectX). I'm not so much looking for a fix (though one would be welcome) - I'm just wondering if anyone else has encountered this. I have already filed a bug report with nvidia, and it might help if I could report that others are having issues with it too (or maybe I really am the only person out there foolish enough to try this). If anyone is interested, I can supply a small test project that uses WPF and OpenGL together to demonstrate the problem. Thanks! -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=7967#7967 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] WPF and OpenGL popup window problem
I have a similar problem to the one described here, although with Windows Forms rather than WPF. Whenever my application renders a tooltip which overlaps the OSG window, the tooltip gets cut off on the next OSG frame. I've spent hours trying to find any information about how to work around the problem, but have drawn a blank. This seems to mainly be a problem on Windows XP; the systems with Vista I have tried do not exhibit this problem. I can't speak to whether different hardware/drivers have different behavior, though. Peter Brede Johansen wrote: Hi Brian, What you describe sounds like the WPF airspace limitation described here http://msdn.microsoft.com/en-us/library/aa970688.aspx. The short version is that each pixel can only belong to one render technology (WPF, DirectX, Win32 OpenGL). A workaround is to render your OSG scene off screen and give the bitmap to WPF. Brede On Wed, Mar 4, 2009 at 11:49 PM, Brian Stewart osgfo...@tevs.eu wrote: Hi, I have developed an application where I have an OSG window embedded in a windows application built with WPF. On certain Geforce cards there seems to be a bug where WPF popup windows (like menus) that have AllowTransparency set to true do not draw correctly over my OSG window. Basically whenever the OSG/OpenGL window updates, it overwrites all overlapping pixels, even if the popup is higher in the window manager's Z-order. I have isolated it to an issue with the OpenGL driver. It only occurs on Geforce cards, not Quadro cards (which is not surprising, since I've read the Geforce cards were optimized for DirectX). I'm not so much looking for a fix (though one would be welcome) - I'm just wondering if anyone else has encountered this. I have already filed a bug report with nvidia, and it might help if I could report that others are having issues with it too (or maybe I really am the only person out there foolish enough to try this). If anyone is interested, I can supply a small test project that uses WPF and OpenGL together to demonstrate the problem. Thanks! -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=7967#7967 ___ osg-users mailing list osg-users@lists.openscenegraph.org mailto:osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] WPF and OpenGL popup window problem
Hi Brian, (or maybe I really am the only person out there foolish enough to try this). Well, maybe the only person foolish enough to use WPF :-) We're using Qt in conjunction with OSG, and the Qt menus and dialogs draw correctly over our OSG QWidget. We even have a button overlapping the OSG window and it works fine, no flickering or anything. We're also using GeForce (mostly 8800, 9800) cards btw, not Quadro. This doesn't help you much, but at least you know it /could/ work, there's just something in how WPF does things that is making it not work for you. J-S -- __ Jean-Sebastien Guayjean-sebastien.g...@cm-labs.com http://www.cm-labs.com/ http://whitestar02.webhop.org/ ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] WPF and OpenGL popup window problem
Hi, I have developed an application where I have an OSG window embedded in a windows application built with WPF. On certain Geforce cards there seems to be a bug where WPF popup windows (like menus) that have AllowTransparency set to true do not draw correctly over my OSG window. Basically whenever the OSG/OpenGL window updates, it overwrites all overlapping pixels, even if the popup is higher in the window manager's Z-order. I have isolated it to an issue with the OpenGL driver. It only occurs on Geforce cards, not Quadro cards (which is not surprising, since I've read the Geforce cards were optimized for DirectX). I'm not so much looking for a fix (though one would be welcome) - I'm just wondering if anyone else has encountered this. I have already filed a bug report with nvidia, and it might help if I could report that others are having issues with it too (or maybe I really am the only person out there foolish enough to try this). If anyone is interested, I can supply a small test project that uses WPF and OpenGL together to demonstrate the problem. Thanks! -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=7967#7967 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
