Shared node bookkeeping

Any time a property references a QNode there is a risk that the node gets
destroyed and then the property is left pointing to a dangling pointer.

To handle such cases, setters of such properties are able to use a helper
that internally connect QObject::destroyed signal to a setter removal method.

Change-Id: I42428c851d0e3d2d88ab0cf6a5b75605334ec648
Task-number: QTBUG-53456
Reviewed-by: Sean Harmer <sean.harmer@kdab.com>

1 files changed, 3 insertions, 3 deletions

diff --git a/tests/auto/render/qmaterial/tst_qmaterial.cpp b/tests/auto/render/qmaterial/tst_qmaterial.cpp
index d658b1b3e..2dfe6637c 100644
--- a/tests/auto/render/qmaterial/tst_qmaterial.cpp
+++ b/tests/auto/render/qmaterial/tst_qmaterial.cpp
@@ -58,9 +58,9 @@ public:
     explicit TestMaterial(Qt3DCore::QNode *parent = 0)
         : Qt3DRender::QMaterial(parent)
         , m_effect(new Qt3DRender::QEffect(this))
-        , m_technique(new Qt3DRender::QTechnique(this))
-        , m_renderPass(new Qt3DRender::QRenderPass(this))
-        , m_shaderProgram(new Qt3DRender::QShaderProgram(this))
+        , m_technique(new Qt3DRender::QTechnique(m_effect))
+        , m_renderPass(new Qt3DRender::QRenderPass(m_technique))
+        , m_shaderProgram(new Qt3DRender::QShaderProgram(m_renderPass))
     {
         m_renderPass->setShaderProgram(m_shaderProgram);
         m_technique->addRenderPass(m_renderPass);