SceneGraph: Camera::setViewport() and draw() don't need to be virtual.

If you need to override this functionality, simply call the subclass
implementation directly instead of calling it through a Camera
pointer/reference.

doc/changelog.dox

@@ -263,6 +263,10 @@ See also:
     working to fail with an assertion. See the new
     @ref Math::Matrix3::rotationShear() and @ref Math::Matrix4::rotationShear()
     accessors for a possible solution.
+-   @ref SceneGraph::Camera::setViewport() and @ref SceneGraph::Camera::draw()
+    are no longer @cpp virtual @ce functions. If you need to override their
+    functionality, simply call the subclass implementation directly instead of
+    calling it through a @ref SceneGraph::Camera.
 -   @ref Shaders::Flat::bindTexture(), @ref Shaders::Phong::bindAmbientTexture(),
     @ref Shaders::Phong::bindDiffuseTexture(),
     @ref Shaders::Phong::bindSpecularTexture() and

src/Magnum/SceneGraph/Camera.h

@@ -184,14 +184,14 @@ template<UnsignedInt dimensions, class T> class Camera: public AbstractFeature<d
          * according to aspect ratio policy.
          * @see @ref setAspectRatioPolicy()
          */
-        virtual void setViewport(const Vector2i& size);
+        void setViewport(const Vector2i& size);
 
         /**
          * @brief Draw
          *
          * Draws given group of drawables.
          */
-        virtual void draw(DrawableGroup<dimensions, T>& group);
+        void draw(DrawableGroup<dimensions, T>& group);
 
     private:
         /** Recalculates camera matrix */