Hi Christoph, attached is an osg file that does what I think you want, unzip and view with: "osgviewer cow.osg.0,-5,0.trans erasor.osg.10,10,10.scale"
The osg file works by using a low (negative) render bin number to force the draw order, first renderbin -2 draws the erasor geometry and the outline, than renderbin -1 renders an invisible quad (colormast all OFF) to fill the depth buffer with 0 (depth range 0-0), so it's pixels won't be overwritten by the normal rendering done later. Laurens. On Wed, Sep 12, 2018 at 7:59 AM Christoph Dohmen <christoph.doh...@cae.de> wrote: > Hi Chris, > > the original goal is drawing a decorated line where the decoration > interrupts and keep the background visible. I tried to visualize the > elements and the seps which are acutally working. I got a few keywords like > 'stencil', 'render to texture' but the samples are all related to textured > items covering textured items and not to polylines covered by textured > items. > > Thank you! > > Cheers, > Christoph > > ------------------ > Read this topic online here: > http://forum.openscenegraph.org/viewtopic.php?p=74716#74716 > > > > > > _______________________________________________ > osg-users mailing list > osg-users@lists.openscenegraph.org > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org >
<<attachment: erasor.zip>>
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