I have the same problem; distant transparent objects are drawn in front of the 
particles, and these objects change backwards depending on the point of view of 
the camera.

Any suggestions please?

Thanks!


Sebastian Messerschmidt wrote:
> Hello,
> 
> After including osgparticle into my renderer I've discovered a problem 
> with alpha blended geometries.
> For a simple test (to ensure the problem is not on my side) I loaded the 
> cessnafire model along with some alpha blended geometry in osgviewer and 
> the transparent faces are always in front of the fire/smoke.
> I've done some debugging of the osgparticle stuff, but I don't see where 
> the problem is.
> What I can say so far, that this is no sorting problem, because blended 
> stuff in front of the particles is always rendered correctly, but 
> elements behind the smoke/fire particles are always rendered in front.
> Interestingly, when setting the cessna in the cessnafire model to 
> transparent bin, setting alpha values of the material to 0.5 and 
> enabling blending, the cessna itself doesn't show up in front of the smoke.
> 
> Is there someone who has similar problems or can explain the problem to me?
> 
> cheers
> Sebastian
> 


------------------
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http://forum.openscenegraph.org/viewtopic.php?p=47623#47623





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