RenderGeometry: verticesPerPatch property added

Change-Id: I03a926e88299dae9b8e8b94d5daaaf87ce232320
Reviewed-by: Sean Harmer <sean.harmer@kdab.com>

2 files changed, 14 insertions, 0 deletions

diff --git a/src/render/backend/rendergeometry.cpp b/src/render/backend/rendergeometry.cpp
index 5ca72a10f..026a8146e 100644
--- a/src/render/backend/rendergeometry.cpp
+++ b/src/render/backend/rendergeometry.cpp
@@ -47,6 +47,7 @@ namespace Render {
 
 RenderGeometry::RenderGeometry()
     : QBackendNode(ReadOnly)
+    , m_verticesPerPatch(0)
     , m_geometryDirty(false)
 {
 }
@@ -57,6 +58,7 @@ RenderGeometry::~RenderGeometry()
 
 void RenderGeometry::cleanup()
 {
+    m_verticesPerPatch = 0;
     m_attributes.clear();
     m_geometryDirty = false;
 }
@@ -68,6 +70,7 @@ void RenderGeometry::updateFromPeer(QNode *peer)
         m_attributes.reserve(geometry->attributes().size());
         Q_FOREACH (QAbstractAttribute *attribute, geometry->attributes())
             m_attributes.push_back(attribute->id());
+        m_verticesPerPatch = geometry->verticesPerPatch();
         m_geometryDirty = true;
     }
 }
@@ -94,6 +97,15 @@ void RenderGeometry::sceneChangeEvent(const QSceneChangePtr &e)
         break;
     }
 
+    case NodeUpdated:
+        if (propertyName == QByteArrayLiteral("verticesPerPatch")) {
+            m_verticesPerPatch = propertyChange->value().value<int>();
+            break;
+
+            // Note: doesn't set dirtyness as this parameter changing doesn't need
+            // a new VAO update.
+        }
+
     default:
         break;
     }
diff --git a/src/render/backend/rendergeometry_p.h b/src/render/backend/rendergeometry_p.h
index 636cba773..01381dc01 100644
--- a/src/render/backend/rendergeometry_p.h
+++ b/src/render/backend/rendergeometry_p.h
@@ -59,10 +59,12 @@ public:
 
     inline QVector<QNodeId> attributes() const { return m_attributes; }
     inline bool isDirty() const { return m_geometryDirty; }
+    inline int verticesPerPatch() const { return m_verticesPerPatch; }
     void unsetDirty();
 
 private:
     QVector<QNodeId> m_attributes;
+    int m_verticesPerPatch;
     bool m_geometryDirty;
 };