Hi again, here I managed to make some videos. The first one is without LOD in the scene the second one is with LOD in the scene
Thanks a lot for any hint! Nick https://dl.dropboxusercontent.com/u/91101321/ll-1.mov https://dl.dropboxusercontent.com/u/91101321/ll-2.mov On Wed, Sep 24, 2014 at 2:28 PM, Trajce Nikolov NICK < [email protected]> wrote: > Hi Robert, Community, > > this will be hard to be described I guess, but I will try. Will make a > video as well later. > > I am doing something with lights and in a CullCallback I do computation of > some light attribs for a shader. This something is splitting the > computation between the CPU and the GPU for lighting purposes.. And I am > doing sort of my LOD within this CullCallback. so the lights are not active > after a distance. And it works great but my cull time is really high so I > am about to optimize it with an LOD (just a try). My scenegraph is like: > > root->MatrixTransform->LightSource > > and again it works ok as long as I add LOD between the transform and the > lightsource. > > Honestly, I have no clue what is going on. The final result is as I am > getting close to the LOD switch out distance the lights are changing > position, intensity and they fade away.instead of just switch out on that > distance. > > Since I am using the osgUtil::PositionalStateContainer::AttrMatrixList > from the currentRenderStage (snippet bellow) and I am using the matrices > from there for the osg::Light attributes something is telling me that these > matrices are somewhat wrong when LOD is in the scene path. But again this > is only guessing > > I am aware that based on written above it is hard to give a hint and I had > big doubts to post this really, but just in case maybe someone will have an > idea. > > Thanks a bunch as always > > Nick > > snippet from the cullcallback: > > virtual void operator()(osg::Node* node, osg::NodeVisitor* nv) > { > osgUtil::CullVisitor * cv = dynamic_cast<osgUtil::CullVisitor*>(nv); > .... > osgUtil::PositionalStateContainer::AttrMatrixList &aml = > originalRenderStage->getPositionalStateContainer()->getAttrMatrixList(); > .... > // here I iterate over the list and after I use the osg::Light attrib > with its associated matrix to compute stuff for the shader > .... > > > -- > trajce nikolov nick > -- trajce nikolov nick
_______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
