----- From: Ulrich Hertlein at 2008-11-30 11:17-----
On 30/11/08 9:17 AM, Steven Saunderson wrote:
> If I setComputeNearFarMode to DO_NOT_COMPUTE_NEAR_FAR the HD background
> (white in my case) appears but not the black text.
Have you set correct near/far values? Maybe your text is clipped by
the near plane?
I've just tried this (and other tests). The HUD code has a Geode as the
parent for the Geometry (background) and Text (foreground). This Geode
has a StateSet that should do what I want but doesn't. If I also attach
this StateSet to the Text everything works. I thought the Text would be
affected by inheritance but apparently not. Perhaps Text has a default
StateSet that stops inheritance. So, the good news is that this is now
working.
> Also, the HUD relies on the scene lighting. This means that when I
> reduce/disable the scene lights the HUD also fades to black.
Disable lighting for the HUD subgraph:
stateSet->setMode(GL_LIGHTING, osg::StateAttribute::OFF);
Brilliant, thank you very much. I wouldn't have realised this from
reading my OpenGL book. Presumably LIGHTING OFF means the colour
displayed is that specified with no modification. This is much better
than adding a light to the HUD (just tried and it works) because lights
are a limited resource.
Thanks,
Steven
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