Cleaning up abuffer classes

Make ABuffer type selectable in openspace.cfg

include/openspace/abuffer/abufferfixed.h

@@ -33,19 +33,19 @@ class ABufferFixed: public ABuffer {
 public:
 
 	ABufferFixed();
-	virtual ~ABufferFixed();
-	virtual bool initialize();
+	~ABufferFixed();
+	bool initialize() override;
 
-	virtual void clear();
-	virtual void preRender();
-	virtual void postRender();
+	void clear() override;
+	void preRender() override;
+	void postRender() override;
+
+	std::vector<fragmentData> pixelData() override;
 
-	std::vector<fragmentData> pixelData();
 protected:
-	virtual bool reinitializeInternal();
+	virtual bool reinitializeInternal() override;
 
 private:
-
 	GLuint *_data;
 	GLuint _anchorPointerTexture;
 	GLuint _anchorPointerTextureInitializer;
@@ -53,11 +53,8 @@ private:
 	GLuint _atomicCounterTexture;
 	GLuint _fragmentBuffer;
 	GLuint _fragmentTexture;
-
-
-
-
 }; 		// ABufferFixed
+
 } 		// openspace
 
 #endif 	// __ABUFFERFIXED_H__

include/openspace/rendering/renderengine.h

@@ -51,7 +51,7 @@ public:
 	RenderEngine();
 	~RenderEngine();
 	
-	bool initialize();
+	bool initialize(const std::string& renderingMethod);
 
     void setSceneGraph(Scene* sceneGraph);
     Scene* scene();
@@ -113,6 +113,7 @@ private:
 	Camera* _mainCamera;
 	Scene* _sceneGraph;
 	ABuffer* _abuffer;
+    int _abufferImplementation;
 	ScreenLog* _log;
 
 	bool _showInfo;