Hi Dirk and Carsten,
Thanks for your answers in very detail.
I think I have caught your meanings. Writing my own Node Core is quite
flexible, that is what I really want.
Here is the last question:
If I have written my Node Core, can it be easily extended to a cluster
environment?
Thanks again, waiting for your reply~~
2009/6/2 Dirk Reiners <[email protected]>
>
> Hi Jie Liu,
>
> Jie Liu wrote:
> > Hi,
> >
> > I read the OpenSG Docs within the v1.8.0 distribution these days, and
> > conclude that OpenSG is effective for rendering complex 3D scenes;
>
> Correct.
>
> > But what if I want to write volume rendering program? Volume rendering
> might
> > involve Cg shaders, or can not be organized in a regular scene...
>
> Not sure what you mean here. You can use shaders inside OpenSG, as well as
> volumes. We have support for Volume Rendering in OpenSG (in 1.8 two
> different
> versions), and they play reasonably well with the rest of the system.
>
> > Can I control my rendering processes? Or, In other words, can I customize
> > the rendering action for a special data set?
>
> Sure. The way to do that is to write anew NodeCore, to do your private
> rendering with OpenGL.
>
> > To greater extent, what if I want to write customized OpenGL programs?
> How
> > can I achieve this goal?
>
> Basic OpenGL rendering can be done in a new NodeCore (or a DrawFunctorCore
> from
> Contrib, if need be).
>
> If you want to do current state-of-the-art volume rendering using
> FBO-rendered
> front and back faces and shader-based volume stepping that's a little more
> complicated, as OpenSG needs to have control over the steps involved in
> drawing
> the scene and you cannot directly interject your own code.
>
> For that I would recommend using OpenSG 2, as the multi-stage rendering
> parts
> are much better defined than in 1.8 (where essentially all you have is the
> FBOViewport).
>
> What exactly are you trying to do?
>
> Yours
>
> Dirk
>
>
>
>
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--
Jie Liu
Visualization Research Group
Center for Information Science, School of EECS,
Room 2104, Science Building No.2,
Peking University, Beijing 100871, China
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OpenSolaris 2009.06 is a cutting edge operating system for enterprises
looking to deploy the next generation of Solaris that includes the latest
innovations from Sun and the OpenSource community. Download a copy and
enjoy capabilities such as Networking, Storage and Virtualization.
Go to: http://p.sf.net/sfu/opensolaris-get
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