Hi Nan, The artificat you are seeing is the very common issue seen with transparent meshes that are not depth sorted from front to back. There are various different techniques to address this issue. I'd recommend you do a search on the archives as this topic has been discussed many many times.
Robert. On Thu, Apr 7, 2011 at 6:38 PM, Nan WANG <nan.c...@gmail.com> wrote: > Hi, everyone~ > > I implemented GPU based MarchingCube algorithm in OSG 3D engine. But i have > got something strange, here is the picture. > > [Image: http://i56.tinypic.com/wvcv87.jpg ] > > some dark gray levels disappear... > > I just put the generated osg::Geometry object into transparent with function > and give an alpha value in fragment shader(constant, e.g. 0.5). > > sset->setmode(GL_BLEND)... > > > Anybody can help me to solve this problem? > > the problem of DepthFunc?BlendFunc?AlphaFunc? how to fix this > > ... > > Thank you! > > Cheers, > Nan > > ------------------ > Read this topic online here: > http://forum.openscenegraph.org/viewtopic.php?p=38300#38300 > > > > > > _______________________________________________ > osg-users mailing list > osg-users@lists.openscenegraph.org > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org > _______________________________________________ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
