On Windows XP graphic card drivers offer two different modes to use multiple monitors on 1 card:
A current limitation of Videotexture (EX9.Texture) and VideoTexture (EX9.Texture YUVMixing) is that they can only playback on one DirectX device at a time. Meaning that in DualView you can see them only on one monitor.
In this mode you can play videotextures on multiple monitors, but you can't go fullscreen on only one of the monitors and have the patches on the other. SpanMode always only works on one graphiccard, the desktop cannot be spanned via several graphiccards.
In this mode a videotexture plays only on one of the outputs at a time and you can go fullscreen with a renderer on one monitor while still patching on the other.
You can use Span Mode in Windows 7 by simply going in the Nvida Control Pannel and setting it up. There it is called Mosaic-Mode.
You can also download configureMosaic.exe from the Nvdia page and use the following commandline parameters to activate it:
> cd c:\Path\ > configureMosaic.exe set rows=1 cols=3 overlap=0,0 res=1920,1080,60
This might be handy if you want vvvv or a startup script to set up the span mode.
Use two filestreams and two videotextures where each is connected to one of the renderers to see video on both renderers/devices but they'll probably not be in sync and you risk bad performance.
for one device. and then use sharedmemtexture->quad for the other devices.
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