Basic UI quad, yay

src/Engine/UI/RenderHierarchy.h

@@ -1,15 +1,29 @@
 #pragma once
+#include "Elements/Element.h"
 
 namespace Seele
 {
 namespace UI
 {
+DECLARE_NAME_REF(Gfx, RenderCommand);
+class RenderElement
+{
+public:
+    RenderElement();
+    virtual ~RenderElement();
+private:
+    PElement referencedElement;
+    Gfx::PRenderCommand renderCommand;
+    friend class RenderHierarchy;
+};
 class RenderHierarchy
 {
 public:
-    
+    RenderHierarchy();
+    ~RenderHierarchy();
 private:
-
+    // List of all drawable elements in draw order
+    Array<RenderElement> drawElements;
 };
 } // namespace UI
 } // namespace Seele