Hello Daniel,
daniel trindade wrote:
> In my application, i need to render the scene on the screen and also on
> a texture. As you suggested, i'm using FBO and simple stage:
>
> root
> |
> +- SimpleStage
> | |
> | +- VisitSubTree -> ApplicationScene
> |
> +- ApplicationScene...
>
>
> How can i set a specific node of ApplicationScene to be rendered on the
> screen, but not by the simple stage?
>
> Is there a way to do that using travmask?
a node (and the subtree below it) are only visited by the RenderAction
if the bitwise AND of the node's travmask and the action's travmask is
not zero. Since you are rendering the same ApplicationScene you can't
have different travmasks on the node depending on whether it is is drawn
to the FBO or screen.
One way to achieve what you want is to render the two pieces not with a
single call to renderAction->apply(root); but instead do this:
renderAction->setTravMask(FBOMask);
renderAction->apply(simpleStage);
renderAction->setTravMask(ScreenMask);
renderAction->apply(appScene);
Another alternative would be to add a core that changes the trav mask
when the RenderAction enters it and restores the previous value when the
action leaves the core again.
Cheers,
Carsten
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