Yop,
All right, Tim's right.
So to conclude :
- setRenderingHint is just a shortcut for setRenderBinDetails, it allows not to
have to specify the name of bin type, and _renderingHint is useless (for those
making inquiries on the OSG source)
- indeed, the binNumber is the draw order number against other children in the
parent Group, evaluated in a left-first traversall logic.
The draw order for this case (3 pass on an geode) is A-B-C. It works well, one
just have to beware of z-fighting, through the reuse of the depth buffer of the
1st pass (via setAttributeAndModes(new
osg::Depth(osg::Depth::EQUAL,0.0,1.0,false) for example).
|
osg::Group "Root"
|
-------------------------------------
| | |
| | |
| osg::Group "B" osg::Group "C"
| [binNumber = 20] [binNumber = 30]
| | |
----------------------------------
|
osg::Geode "A"
[binNumber = 15]
Thanks to all.
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