Hi all,
I'm having some issues regarding OcclusionQueryNode. I draw an object as
a set of faces and a set of edges, and I can't seem to get OQN to deal
with both as a single entity, resulting in an artifact where for a fixed
camera position the object becomes intermittent (disappears, then
reappears on the next cycle, and so on). I reckon once either faces or
edges are occluded the other set has enough room to render itself, but
in turn occludes the former, or something along those lines; just my
guess, though. The setup is as simple as an OQN over a node that reads a
.osg file with two children geodes (said sets).
Note that while finding a solution to this would be great my problem is
even simpler. All I'm trying to do is use the existing implementation of
OQN to determine whether an object is visible or not, and then display
or hide a label attached to it but on a different renderbin (over both
objects and scene). The object's geometry is very simple and I don't
really care for "occluding" it, I'd just like the number of pixels drawn
(or a binary output like getPassed()). Is it possible to turn occlusion
off while preserving this behaviour? (A threshold of 0 doesn't seem to
work.) I've looked through the code a few times but I'm having a hard
time with it. :(
Thanks in advance,
Eduard
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