Why not simply use a Producer::Camera postDrawCallback?
-don
On 11/4/06, Oliver Kutter <[EMAIL PROTECTED]
> wrote:
Hi Robert,
Is it possible to implement my own RenderStage with some new functions I need, which inherits from osgUtil/RenderStage and set it to the SceneView with setRenderStage(...)? Is then the new RenderStage completely responsible for the render-to-texture part? Can I also use it to manually read back the z-buffer?
regards
Oliver
Robert Osfield schrieb:Hi Oliver,
The rendering is done in the OSG's rendering back end, which is
populated by the cull traversal. The CameraNode just controls how
this rendering back end is set up. The place in particular where all
the RTT stuff happens is in src/osgUtil/RenderStage.cpp.
For read back the thing to do is attach an osg::Image. I recall a use
having a problem with this for z buffer read back a while back, I
don't recall enough what the resolution if any was.
Robert.
On 11/2/06, Oliver Kutter <[EMAIL PROTECTED]> wrote:
Hi,_______________________________________________
I want to do some buffer read back, e.g. read out z-buffer values or
texture values from fbo render targets. How can I do this?
My idea was to inherit from osg::CameraNode and implement an own
CameraNode. But I can't find out where the rendering is done. When and
where is the rendering of the camera done?
Or can I do it anyway else?
regards,
Oliver
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