Hi Judie, I'm afraid I've just found it too difficult to work out what you are doing to be able to provide any suggestions. Could you provide a high level explanation of what you are trying to do and why to give a bit of context. Then why you provide code snippets could you space them better as word wrap has made it extremely difficult to read the code.
Robert. On Tue, Apr 15, 2008 at 11:09 PM, Judie <[EMAIL PROTECTED]> wrote: > In my code I have an OSG tree with the following global state > attributes defined: > > osgUtil::CullVisitor *pCullVisitor = m_sceneView- > >getCullVisitor(); > osgUtil::RenderBin *pRenderBin = pCullVisitor->getCurrentRenderBin(); > pRenderBin->setSortMode(osgUtil::RenderBin::SORT_BACK_TO_FRONT); > osg::StateSet *pStateSet = m_sceneView- > >getGlobalStateSet(); > pStateSet->setMode(GL_ALPHA_TEST, > osg::StateAttribute::OFF); > osg::CullFace *pCullFace = new osg::CullFace; > pCullFace->setMode(osg::CullFace::BACK); > pStateSet->setMode(GL_CULL_FACE, osg::StateAttribute::ON); > pStateSet->setAttribute(pCullFace, osg::StateAttribute::ON); > osg::ShadeModel *pShadeMdl = new osg::ShadeModel; > pShadeMdl->setMode(osg::ShadeModel::FLAT); > pStateSet->setAttribute(pShadeMdl, osg::StateAttribute::ON); > osg::Depth *pDepth = new osg::Depth; > pDepth->setFunction(osg::Depth::LEQUAL); > pStateSet->setMode(GL_DEPTH_TEST, osg::StateAttribute::ON); > pStateSet->setAttribute(pDepth, osg::StateAttribute::ON); > > The only other time I change the state is when I enable and disable > the color buffer writes. > > Here is what I am seeing: > If I render the scene with the color buffer always on, then objects > that should be occluded by other objects behave correctly and are > occluded. > > When I render the scene with the color buffer off for some of the > nodes in the beginning of the tree, with it enabled again for ones > later on, I expect that because I DID NOT disable writes to the depth > buffer, that the objects which are occluded by other objects (even > though they were not drawn to the color buffer) should behave > correctly. However, they do not. Some do and some don't and if I > rotate then even ones that behave correctly, begin to misbehave. > > Now I have made the following change because I don't need to worry > about transparency anymore: > pRenderBin->setSortMode(osgUtil::RenderBin::SORT_FRONT_TO_BACK); > > And this almost fixes the issue except if I rotate to some degree, I > still get parts of objects drawn that should be occluded. I know > because I can toggle the objects visible and invisible. > > Is there something internally that can be culling parts of objects > because I have the color buffer masked for them? > > Thanks, > > Judie > _______________________________________________ > 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
