Re: [osg-users] vpbmaster vs osgdem

2009-04-05 Thread Robert Osfield
On Sat, Apr 4, 2009 at 8:45 PM, Gert van Maren g...@k2vi.com wrote: Hi Robert, Did you manage to open the zip file? If not I can attach only the last bits of the log files. Yes they just download fine. The three secondary split level tasks in the directory:

Re: [osg-users] SGI declares bankruptcy (UNCLASSIFIED)

2009-04-05 Thread Raphael Sebbe
For Pixar involvement, I just re-read it, it is in the Renderman Companion, in the last part of Pat Hanrahan foreword (May 1989). ... *During this time, we also began a joint project with Silicon Graphics to work on a three-dimensional graphics library usable for both interactive graphics and

[osg-users] when to use VertexBufferObjects or DisplayLists

2009-04-05 Thread Christian Sam
Hi, i have a question about using VBOs and Display Lists in osg according to my OpenGL book, both methods will optimize rendering due geometry is moved to the graphics-hardware. it also says, a constraint when using display lists is, that data can't be changed afterwards. so its great for

Re: [osg-users] when to use VertexBufferObjects or DisplayLists

2009-04-05 Thread Robert Osfield
Hi Christian, VBO's are better for dynamic geometry, but do have a higher CPU overhead than display lists. However, whether you are using VBO or not, you probably still don't want to modify any geometry. It's far more efficient to updating vertex position via vertex shaders. I know too little

Re: [osg-users] How to pass unhandled events to view behind + osgWidgets

2009-04-05 Thread Jason H.
I think I have found a workaround. I have createad a new GUIEventHandler to handle only mouse events. I then check whether menu viewer has handled the message. If no, then I iterate through views of composite viewer, locate the camera at mouse coordinates and put event into event queue of view

Re: [osg-users] How to pass unhandled events to view behind + osgWidgets

2009-04-05 Thread Robert Osfield
Hi Jason, Good to hear you've found a solution. Managing the events with a composite viewer is a bit more complicated because of deciding who gets the event focus. The API of osgViewer::View/CompositeViewer probably needs evolving to make it easier, exactly what it should look yet I can't say.

Re: [osg-users] when to use VertexBufferObjects or DisplayLists

2009-04-05 Thread Christian Sam
hi, refering to osgforest as example, is a method like createTransformGraph, where the different looking trees are based on the same (scaled) tree model better from a performance point of view? i mean better than the two other fixed pipeline methods in this example thanks in advance,

[osg-users] VertexArray from a loaded .osg file.

2009-04-05 Thread Christian Sam
Hi, i'm using osggis to convert an esri shape file to an .osg file. i want to use the scenedata, more precisely the vertex positions from that file. i need them for an analyzing function, and won't add that loaded file directly into my scenegraph, because i don't want to display it before

Re: [osg-users] osgmultitexturecontrol example data base?

2009-04-05 Thread Julia Guo
hi, Im also trying to run the example. Is the example data ready? Julia -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=9762#9762 ___ osg-users mailing list osg-users@lists.openscenegraph.org

[osg-users] animating textures

2009-04-05 Thread Julia Guo
Hi, I am trying to animate a transition between textures on a surface. I had a look in osgAnimation (http://www.openscenegraph.org/documentation/OpenSceneGraphReferenceDocs/a01556.html) but that namespace seems to be just related to geometry. I found osgFX::MultiTextureControl