Generalize instancing to all Renderables

[libs/gl.git] / source / objectinstance.h

diff --git a/source/objectinstance.h b/source/objectinstance.h
index d665851fbb5d40fb0201d17c255ea8667572a04c..e7f85e3fbc4c3bc17bf3dbe12aa499cd5c6834b3 100644 (file)
--- a/source/objectinstance.h
+++ b/source/objectinstance.h
@@ -31,6 +31,7 @@ public:
        ObjectInstance(const Object &);
 
        const Object &get_object() const { return object; }
+       virtual long get_instance_key() const { return reinterpret_cast<long>(&object); }
 
        virtual void render(const Tag &tag = Tag()) const;
        virtual void render(Renderer &, const Tag & = Tag()) const;