Hi Robert,
Yes, I can do that if I have an own camera to do the RTT. This particular case
is about a node that will modify any camera that renders it.
I assumed that I had stumbled over a bug in OSG when I discovered that turning
off RTT does not work.
More explanation about why I am doing it this way:
I have a node that will modify any camera that actually targets the node for
rendering.
The node will put any current render camera into RTT mode, and have post-render
cameras as children that will post-process the result. I can thus add it to any
scene-graph and get the post-processing I want without having to alter the
scene-graph any further.
Doing it with a new RTT camera means that I have to add it as a slave camera to
every camera that renders the scene-graph, or to add it as a child camera of
any camera that renders the scene-graph. A child camera would have to be
inserted so that it severs the connection between old camera and scene-graph
(to prevent the old camera to render the scene-graph itself). A slave camera
would be complicated if the main camera already has a lot of slaves.
The simulators we are creating will be used on a high variety of setups, it can
be one camera or it can be 100 cameras. A generic solution is to make a node
that modifies the current camera instead of inserting new cameras.
Doing it this way is so far proving to be a benefit, except for the fact that I
can not turn off the RTT mode.
Viggo
> Date: Wed, 13 Aug 2008 13:50:16 +0100> From: [EMAIL PROTECTED]> To:
> [email protected]> Subject: Re: [osg-users] Help! I have a
> render target problem.> > Hi Viggo,> > To switch off RTT rendering just node
> camera->setNodeMask(0x0);> > Robert.> > On Wed, Aug 13, 2008 at 11:32 AM,
> Viggo Løvli <[EMAIL PROTECTED]> wrote:> > Hi,> >> > I am setting up my camera
> to render to a texture with the following> > commands:> >> >
> camera.setRenderTargetImplementation( osg::Camera::FRAME_BUFFER_OBJECT> > );>
> > camera.attach( osg::Camera::BufferComponent( osg::Camera::COLORBUFFER0> >
> ), myBuffer );> > camera.setDrawBuffer( GL_COLOR_ATTACHMENT0_EXT );> >> > The
> camera now renders to the texture myBuffer which is a> >
> osg::TextureRectangle*.> > After many ticks, I decide to stop rendering to
> the texture, so I run the> > following commands:> >> > camera.detach(
> osg::Camera::BufferComponent( osg::Camera::COLORBUFFER0 )> > );> >
> camera.setDrawBuffer( GL_NONE );> > camera.setReadBuffer( GL_NONE );> >
> camera.setRenderTargetImplementation( osg::Camera::FRAME_BUFFER );> >> > I do
> not delete the myBuffer pointer.> > I continue to read from myBuffer even
> though I do not write to it anymore.> >> > PROBLEM: The program continues to
> the myBuffer texture, and not to the> > frame-buffer.> >> > Regards,> >
> Viggo> >> >> > ________________________________> > Windows Live Messenger på
> mobilen. Hold kontakten hvor som helst når som> > helst.> >
> _______________________________________________> > osg-users mailing list> >
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> http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org> >>
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