QRenderPass: add/remove Parameters

Change-Id: Ibccaa97c9cd1d9e8229ea59228ef2535b23b64b7
Reviewed-by: Sean Harmer <sean.harmer@kdab.com>

3 files changed, 47 insertions, 0 deletions

diff --git a/src/render/frontend/qrenderpass.cpp b/src/render/frontend/qrenderpass.cpp
index cfa6fee2e..3c58b87b1 100644
--- a/src/render/frontend/qrenderpass.cpp
+++ b/src/render/frontend/qrenderpass.cpp
@@ -250,6 +250,48 @@ QList<QRenderState *> QRenderPass::renderStates() const
     return d->m_renderStates;
 }
 
+void QRenderPass::addParameter(QParameter *parameter)
+{
+    Q_D(QRenderPass);
+    if (!d->m_parameters.contains(parameter)) {
+        d->m_parameters.append(parameter);
+
+        // We need to add it as a child of the current node if it has been declared inline
+        // Or not previously added as a child of the current node so that
+        // 1) The backend gets notified about it's creation
+        // 2) When the current node is destroyed, the child parameters get destroyed as well
+        if (!parameter->parent())
+            parameter->setParent(this);
+
+        if (d->m_changeArbiter != Q_NULLPTR) {
+            QScenePropertyChangePtr change(new QScenePropertyChange(NodeAdded, QSceneChange::Node, id()));
+            change->setPropertyName("parameter");
+            change->setValue(QVariant::fromValue(parameter->id()));
+            d->notifyObservers(change);
+        }
+    }
+}
+
+void QRenderPass::removeParameter(QParameter *parameter)
+{
+    Q_D(QRenderPass);
+
+    if (d->m_changeArbiter != Q_NULLPTR) {
+        QScenePropertyChangePtr change(new QScenePropertyChange(NodeRemoved, QSceneChange::Node, id()));
+        change->setPropertyName("parameter");
+        change->setValue(QVariant::fromValue(parameter->id()));
+        d->notifyObservers(change);
+    }
+    d->m_parameters.removeOne(parameter);
+}
+
+
+QList<QParameter *> QRenderPass::parameters() const
+{
+    Q_D(const QRenderPass);
+    return d->m_parameters;
+}
+
 } // namespace Qt3D
 
 QT_END_NAMESPACE
diff --git a/src/render/frontend/qrenderpass.h b/src/render/frontend/qrenderpass.h
index f4e53552f..1f401860d 100644
--- a/src/render/frontend/qrenderpass.h
+++ b/src/render/frontend/qrenderpass.h
@@ -86,6 +86,10 @@ public:
     void removeRenderState(QRenderState *state);
     QList<QRenderState *> renderStates() const;
 
+    void addParameter(QParameter *p);
+    void removeParameter(QParameter *p);
+    QList<QParameter *> parameters() const;
+
 Q_SIGNALS:
     void shaderProgramChanged();
 
diff --git a/src/render/frontend/qrenderpass_p.h b/src/render/frontend/qrenderpass_p.h
index 3783e3d2e..33017fd83 100644
--- a/src/render/frontend/qrenderpass_p.h
+++ b/src/render/frontend/qrenderpass_p.h
@@ -71,6 +71,7 @@ public:
     QList<QAnnotation *> m_annotationList;
     QList<QParameterMapping *> m_bindings;
     QList<QRenderState *> m_renderStates;
+    QList<QParameter *> m_parameters;
     QShaderProgram *m_shader;
 };