Implement ordered group

Add ordered property to group, which disables automatic depth sorting for
that group and all it's children. The group as a whole gets sorted with
other objects as if it was one object.

Task-number: QT3DS-3820
Change-Id: Iea71917fc78f4c543aa944d851c77b6794bd7d80
Reviewed-by: Miikka Heikkinen <miikka.heikkinen@qt.io>
Reviewed-by: Tomi Korpipää <tomi.korpipaa@qt.io>

1 files changed, 9 insertions, 0 deletions

diff --git a/src/runtimerender/rendererimpl/Qt3DSRenderableObjects.cpp b/src/runtimerender/rendererimpl/Qt3DSRenderableObjects.cpp
index 712214a..2705b18 100644
--- a/src/runtimerender/rendererimpl/Qt3DSRenderableObjects.cpp
+++ b/src/runtimerender/rendererimpl/Qt3DSRenderableObjects.cpp
@@ -600,5 +600,14 @@ namespace render {
                 theRenderContext, m_Generator.GetLayerGlobalRenderProperties(),
                 TShaderFeatureSet());
     }
+
+    void SOrderedGroupRenderable::update()
+    {
+        QT3DSVec3 sum(0.0f, 0.0f, 0.0f);
+        for (int i = 0; i < m_renderables.size(); i++)
+            sum += m_renderables[i]->m_WorldCenterPoint;
+        sum *= 1.0f / m_renderables.size();
+        m_WorldCenterPoint = sum;
+    }
 }
 }