Hi Gerrick, This class works well for us:
http://cadkit.svn.sourceforge.net/viewvc/cadkit/trunk/OsgTools/Callbacks/SortBackToFront.h?view=markup http://cadkit.svn.sourceforge.net/viewvc/cadkit/trunk/OsgTools/Callbacks/SortBackToFront.cpp?view=markup BSD license. Hope it helps. Per On 10/26/07, Gerrick Bivins <[EMAIL PROTECTED]> wrote: > > Hi All, > Sorry if the question is too vague.We're a bit perplexed about depth > sorting of polygons in OSG. > We've been trying to get some vis working that uses Geometry (display > lists or vbo's) where the primitives in > Geometry need to be blended back to front and we're seeing strange > results. The original view has > the correct blending however as we navigate around, blending isn't > correct. We've been diggin around > and it seems that OSG only does sorting down to the drawable level. Is > this the case? If so, does anyone > one have idea on how to efficiently sort and then blend polys in OSG ? If > not, how do we change things up > so that OSG does sorting on the polys? > Thanks for any ideas here, cuz we've been mulling over this for a few > months. I originally thought it was > our implementation (we initially mixed pure gl calls in OSG drawable > similar to the teapot) but I have > since rewritten our pipeline to use OSG calls and another developer in our > group implemented an effect > that requires this type of blending and he is seeing the same thing I am. > biv > > _______________________________________________ > osg-users mailing list > [email protected] > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org > >
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