[Interest] [Qt3D] QGeometryRenderer can't be shared

[Xavier Bigand]

I am trying to share my QGeometryRenderer between many Entities, but the
addComponent doesn't have any effect.

When I load our models from files, I save the root entity node in a map,
and after I clone the node tree when a previously model is in the map.
I have no issue with the material component that is in the cloned tree, but
the geometryRenderer isn't printed by my trace method (material and
geometryRenderer components are at the same level on sub-entities).

I set the shareable flag to true on the geometryRenderer.

PS : for the material component I don't assign the same ptr to the cloned
model, because I don't want to share the material all attributs. My
material class have is own clone method to copy only the shareable
attributs (maps, specular,...).


Here is my cloning method :

    void Model::cloneModel(Qt3DCore::QEntity* source,
Qt3DCore::QEntity& destination)

    {

        QNodeVector sourceEntities = source->childNodes();


        foreach (QNode* node, sourceEntities)

        {

            QEntity*    sourceSubEntity = dynamic_cast<QEntity*>(node);

            QEntity*    subEntity = new QEntity(&destination);


            H3D_ASSERT(sourceSubEntity != nullptr);


            subEntity->setObjectName(sourceSubEntity->objectName());


            QComponentVector    sourceComponents =
sourceSubEntity->components();


            foreach (QComponent* component, sourceComponents)

            {

                QGeometryRenderer*  geometryRenderer =
dynamic_cast<QGeometryRenderer*>(component);

                LightingMaterial*   material =
dynamic_cast<LightingMaterial*>(component);


                if (geometryRenderer)

                {

                    subEntity->addComponent(geometryRenderer);

                    LOG_INFO("geometryRenderer %s %s",
qPrintable(component->metaObject()->className()),
qPrintable(component->objectName()));

                }

                else if (material)

                {

                    LightingMaterial*   clonedMaterial = new LightingMaterial();


                    clonedMaterial->clone(*material);

                    subEntity->addComponent(clonedMaterial);

                }

                else if (dynamic_cast<QPhongMaterial*>(component))  //
TODO to remove

                {

                }

                else if
(dynamic_cast<QPhongAlphaMaterial*>(component))  // TODO to remove

                {

                }

                else

                {

                    H3D_ASSERT_MSG(false, "Unsupported component type
%s", qPrintable(component->metaObject()->className()));

                }

            }

        }

    }


I have this issue with Qt 5.7 and 5.8 build from the git branch.

-- 
Xavier
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.qt-project.org/pipermail/interest/attachments/20160930/1378883f/attachment.html>