[osg-users] Problem with multi monitor with NVIDIA card

[Björn Blissing]

I discovered that using Wojciech's solution with the single threaded option doesn't allways work. But I am not sure if all examples actually parse this argument?

This works even better. But as you state: The taskbar gets really looong...

> So day to day I actually develop under multi-monitor mode as 
> it seems to be more stable with the desktop. I just constrain 
> the output of the apps to a single monitor

The problem is that I get this problem even for applications that are restricted to one monitor, ie. osgwindows and osgkeyboardmouse. 

> As Robert said - check your using the latest and greatest 
> driver it might just start working for you...

The forceware 169.21 driver IS the lastest WHQL drivers for my gfx-card.

/Björn



> -----Ursprungligt meddelande-----
> Från: osg-users-bounces at lists.openscenegraph.org 
> [mailto:osg-users-bounces at lists.openscenegraph.org] För Colin Dunlop
> Skickat: den 3 april 2008 14:44
> Till: OpenSceneGraph Users
> Ämne: Re: [osg-users] Problem with multi monitor with NVIDIA card
> 
> Hi Byorn,
> 
> I've always had mixed results with multi-monitor 
> configuration. There are two multi-monitor options, 
> horizontal-span or multi-monitor mode, and several ways of 
> setting these up via a combination of the Display and the 
> ever changing (for the worse IMO) NVidia settings dialog.
> 
> What I found works best for fullscreen apps over two monitors 
> is NOT checking the Display "extend my desktop to this 
> monitor" option, and then configuring a "horizontal span" in 
> the NVidia settings dialog.
> Basically things work more reliably when Windows is not involved.
> In horizontal span Windows just sees things as one very wide display.
> 
> The downside to NOT using the multi-monitor mode is that your 
> task bar is stretched the entire length, and windows pop-up 
> between two monitors. There used to be some option to not 
> stretch your task bar in "span" mode and to do pop-ups on a 
> chosen monitor, however I found they were not reliable (for 
> me) and changed and reset between sessions or on the moon phase...
> 
> So day to day I actually develop under multi-monitor mode as 
> it seems to be more stable with the desktop. I just constrain 
> the output of the apps to a single monitor, however for 
> testing I use single monitor mode or horizontal span as 
> described above which works fine for all the OSG apps. And in 
> summary I've never had my cake and eaten it - if you want 
> dual-screen performance and correctness choose span, and if 
> you can accept some dual-screen OpenGL glitches choose 
> multi-monitor ;-)
> 
> As Robert said - check your using the latest and greatest 
> driver it might just start working for you...
> 
> Cheers,
> 
> Colin.
> 
> Björn Blissing wrote:
> > I recently got the SVN release of OSG 2.3.7. When I compile 
> and run the examples in single monitor mode they all work 
> fine. But when I go to multi monitor mode some of them look 
> really wierd. I have attached a picture of how this artifact 
> looks like (In this case the osgKeyboardMouse example, but 
> all looks pretty much the same).
> > 
> > I run these examples on a Windows XP computer with a Inter 
> Core 2 Duo CPU and 4GB ram and a NVIDIA GeForce 8800 GTX card 
> running forceware 169.21 drivers. I have tried to change the 
> multi monitor GPU acceleration setting to compability mode 
> without any success (although it works if I set this to 
> SingleScreenPerformance mode but then I only get the image on 
> one of my screens).
> > 
> > Is this a known NVIDIA error? Are there any known workarounds?
> > 
> > Examples tested in multi monitor configuration (all work in 
> single monitor configuration):
> > osgAnimate - Wierd
> > osgAutoTransform - OK
> > osgBillboard - Ok
> > osgBlendEquation - Wierd
> > osgCallback - Wierd
> > osgClip - Wierd
> > osgCubeMap - Wierd
> > osgDelaunay - Ok
> > osgDepthPartition - Ok
> > osgDistortion - Ok
> > osgFadeText - Ok
> > osgForest - Wierd
> > osgFxBrowser - Ok
> > osgGeometry - Wierd
> > osgGeometryShaders - Ok
> > osgHangglide - Wierd
> > osgHud - Wierd
> > osgKeyboard - Ok
> > osgKeyboardMouse - Wierd
> > osgLight - Wierd
> > 
> > /Björn
> >  <<wierd1.jpg>>
> > 
> > 
> > 
> > 
> ----------------------------------------------------------------------
> > --
> > 
> > 
> > 
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> > --
> > 
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