Hi Oliver, Could you roll back a bit and explain what your are trying to achieve, rather than explaining how you have already chosen to solve it. It may well be that there is cleaner way to implementing what you want to do without the need for callbacks.
Robert. On 30 October 2014 15:03, Olivier Migliorini <[email protected]> wrote: > Hi everyone, > > I have read about how to set uniforms in a node cullcallback. > > Code: > > class LightingCullCallback : public osg::NodeCallback > { > std::unordered_map<osgUtil::CullVisitor*, > osg::ref_ptr<osg::StateSet>> mCullVisitorStateSetMap; > public: > LightingCullCallback (int maxLightNb){} > > virtual void operator() (osg::Node* node, osg::NodeVisitor* nv) > { > osgUtil::CullVisitor* pCullVisitor = > dynamic_cast<osgUtil::CullVisitor*>(nv); > if (pCullVisitor) > { > std::unordered_map<osgUtil::CullVisitor*, > osg::ref_ptr<osg::StateSet>>::iterator itStateSet = > mCullVisitorStateSetMap.find(pCullVisitor); > osg::ref_ptr<osg::StateSet> pStateSet = NULL; > if (itStateSet != mCullVisitorStateSetMap.end()) > { > pStateSet = itStateSet->second; > } > else > { > pStateSet = new osg::StateSet; > InitUniform(pStateSet); > > mCullVisitorStateSetMap.insert(std::make_pair(pCullVisitor, pStateSet)); > } > UpdateUniform(pStateSet); > pCullVisitor->pushStateSet(pStateSet); > traverse(node, nv); > pCullVisitor->popStateSet(); > } > } > }; > > > > > I am looking for a similar way to do this with Drawable::CullCallback. > But as far as I understand traversal and stateset mechanisms, I can not > find a way to use pushStateSet and popStateSet in the > Drawable::CullCallback. > > I have tried to do this instead > > Code: > > struct SCameraStateSetMap > { > std::unordered_map<osg::Camera*, osg::ref_ptr<osg::StateSet>> > mCameraStateSetMap; > } > class LightingGeometryCullCallback : public osg::Drawable::CullCallback > { > SCameraStateSetMap* mpCameraStateSetMap; > public: > LightingGeometryCullCallback( SCameraStateSetMap* > pCameraStateSetMap) : mpCameraStateSetMap(pCameraStateSetMap) {} > > virtual bool cull(osg::NodeVisitor* nv, osg::Drawable* drawable, > osg::RenderInfo* renderInfo) const > { > osgUtil::CullVisitor* pCullVisitor = > dynamic_cast<osgUtil::CullVisitor*>(nv); > if (pCullVisitor != NULL) > { > osg::Camera* pCamera = > pCullVisitor->getCurrentCamera(); > if (pCamera != NULL) > { > std::unordered_map<osg::Camera*, > osg::ref_ptr<osg::StateSet>>::iterator itStateSet = > mpCameraStateSetMap->mCameraStateSetMap.find(pCamera); > osg::ref_ptr<osg::StateSet> pStateSet = > NULL; > if (itStateSet != > mpCameraStateSetMap->mCameraStateSetMap.end()) > { > pStateSet = itStateSet->second; > } > else > { > pStateSet = new osg::StateSet; > InitUniform(pStateSet); > > mpCameraStateSetMap->mCameraStateSetMap.insert(std::make_pair(pCamera, > pStateSet)); > } > UpdateUniform(pStateSet); > return IsCulled(drawable); > } > } > return true; > } > }; > > class LightingGeometryDrawCallback : public osg::Drawable::DrawCallback > { > SCameraStateSetMap* mpCameraStateSetMap; > public: > LightingGeometryDrawCallback( SCameraStateSetMap* > pCameraStateSetMap) : mpCameraStateSetMap(pCameraStateSetMap) {} > > virtual void drawImplementation(osg::RenderInfo& renderInfo, const > osg::Drawable* drawable) const > { > osg::Camera* pCamera = renderInfo.getCurrentCamera(); > if (pCamera != NULL) > { > std::unordered_map<osg::Camera*, > osg::ref_ptr<osg::StateSet>>::iterator itStateSet = > mpCameraStateSetMap->mCameraStateSetMap.find(pCamera); > if (itStateSet != > mpCameraStateSetMap->mCameraStateSetMap.end()) > { > > renderInfo.getState()->pushStateSet(pStateSet); > renderInfo.getState()->apply(); > drawable->drawImplementation(renderInfo); > renderInfo.getState()->popStateSet(); > renderInfo.getState()->apply(); > } > else > { > drawable->drawImplementation(renderInfo); > } > } > } > }; > > > > > But not successful. Do I have a chance to get this work this way? Or > another? > > Thanks for taking the time to read. > > Cheers, > Olivier[/code] > > ------------------ > Read this topic online here: > http://forum.openscenegraph.org/viewtopic.php?p=61463#61463 > > > > > > _______________________________________________ > osg-users mailing list > [email protected] > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org >
_______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
