[osg-users] Independent prerender step

[Kallfass, Daniel, SDGE1]

Hello,

What is the correct way to create an independent prerender step in OSG?
I'd like to paint a skydome (from osgEphemeris) to the framebuffer which
doesn't affect the near/far clipping plane computation, the z-buffer,
scene lighting etc.

I've tried around using osg::Camera with PRE_RENDER as render order,
FRAME_BUFFER as rendertargetimplementation and (DEPTH_BUFFER |
COLOR_BUFFER) ss the clear color.

But it seems that this is not quite sufficient to make the prerender
step completely independent from the main render step.

What else do I need to set?

Thanks,

Daniel