Re: [osg-users] CompositeViewer, update traversal, prerender branch

2008-09-21 Thread Fabian Bützow
Hi Robert, thanks for your help in this case and thanks for all your other replies, you have been a great source of motivation and advice. However, my problem has not been completely solved, yet. You were right, with the single graphics context and window for all views, the textures are

Re: [osg-users] CompositeViewer, update traversal, prerender branch

2008-09-21 Thread Ralf Stokholm
Hi Fabian Windows should handle a window that expands ower multiple devices, in our application we have a single graphicswindow set up on two screens, the graphics window is handmodified to position itself in the top left corner, 0,-1080 in this case and extends past both screens. I then set up

Re: [osg-users] CompositeViewer, update traversal, prerender branch

2008-09-19 Thread Robert Osfield
Hi Fabian, I'm afraid you don't really say enough about the specifics of your setup for others to know enough to help you. With your View, do they are share the same GaphicsWindow? How do you setup the pre render step? A slave Camera? A Camera in the scene graph, how do you grab the live

Re: [osg-users] CompositeViewer, update traversal, prerender branch

2008-09-19 Thread Fabian Bützow
Ok, sorry Robert, now more specifically: Hardware/software: WinXP, Opteron 2 GHz, 1 GB Ram, Geforce 8800 GS, OSG 2.4. The prerender node has 5 camera nodes, a textured rectangle is attached to each camera node. The cameras render to texture in a defined RenderOrder. The textures of the

Re: [osg-users] CompositeViewer, update traversal, prerender branch

2008-09-19 Thread Robert Osfield
Hi Fabian, The first problem to resolve is the fact that views are each using a separate GraphicsWindow, this means a separate GraphicsContext for each view, which in term means that FBO's/texture objects/display lists have be duplicated for each context, unless you enable sharing of contexts,

[osg-users] CompositeViewer, update traversal, prerender branch

2008-09-18 Thread Fabian Bützow
Hi everybody, Ive got some problems with displaying the result of a prerender step in different views. The root node has two basic branches: a prerender branch that renders and processes a live camera image, and a main render branch, that has two subnodes. The output texture of the