Hi,
On 27/10/10 05:44, Serg Radkov wrote:
Hi,
How to make transparent geometry located at various osg:: Drawable properly
sorted in depth?
"properly" sorted is difficult.
OSG sorts the geometry by the distance from the camera.
This leads to incorrect results.
what else do you think would work? You can split up geometry more or put
things in different bins, but the problems will just show up at a finer
grain.
Have a look at the osgoit (order independent transparency) example. Also
google for "order independent transparency" and you would find all the
reasons why just sorting is not a fix for all cases.
jp
In attachments screenshots of the same object from different angles.
Arrows indicate the edge that does not draw, because their center turns away
from the camera than the center of the face is behind them.
I draw polygons with the following settings:
geode->getOrCreateStateSet()->setMode( GL_BLEND, osg::StateAttribute::ON );
geode->getOrCreateStateSet()->setRenderingHint( osg::StateSet::TRANSPARENT_BIN
);
geode->getOrCreateStateSet()->setRenderBinMode(osg::StateSet::RenderBinMode::USE_RENDERBIN_DETAILS);
geode->getOrCreateStateSet()->setRenderBinDetails( 11, "DepthSortedBin");
Thank you!
Cheers,
Serg
------------------
Read this topic online here:
http://forum.openscenegraph.org/viewtopic.php?p=33108#33108
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