Nove repo opengl-learning

lessons/5. Advanced Lighting/1. Advanced Lighting/src/Framebuffer.h

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+#pragma once
+class Framebuffer
+{
+public:
+	/* id of this framebuffer */
+	unsigned int ID;
+
+	Framebuffer(const int& width, const int& height);
+	virtual ~Framebuffer();
+
+	/* updates width and height of buffers */
+	virtual void UpdateSize(const unsigned int& newWidth, const unsigned int& newHeight);
+	/* sets opengl to use this framebuffer */
+	void Use();
+	/* sets opengl to use default buffer */
+	void UseDefault();
+	void clearBuffers(float r = 0.0f, float g = 0.0f, float b = 0.0f, float a = 1.0f);
+	void clearColorBuffer(float r = 0.0f, float g = 0.0f, float b = 0.0f, float a = 1.0f);
+	void clearDepthBuffer();
+	void clearStencilBuffer();
+	void clearDepthStencilBuffer();
+	virtual unsigned int getWidth();
+	virtual unsigned int getHeight();
+	virtual unsigned int getColorBuffer();
+	virtual unsigned int getDepthSnectilBuffer();
+
+	static void clearAllBuffers(float r = 0.0f, float g = 0.0f, float b = 0.0f, float a = 1.0f);
+
+protected:
+	Framebuffer() : width(0), height(0), ColorBuffer(0), ID(0), DepthStencilBuffer(0) {}
+	unsigned int width;
+	unsigned int height;
+
+	/* opengl texture2D */
+	unsigned int ColorBuffer;
+	/* renderbuffer depth 24 bits stencil 8 bits */
+	unsigned int DepthStencilBuffer;
+
+	virtual int checkStatus();
+	virtual bool checkBind();
+	virtual void destroy();
+};
+
+/* Multisampled Framebuffer */
+class MSFramebuffer : public Framebuffer
+{
+public:
+	/* Number of samples */
+	const unsigned int Nsamples;
+
+	MSFramebuffer(const int& width, const int& height, const unsigned int samples);
+	virtual ~MSFramebuffer();
+
+	void UpdateSize(const unsigned int& newWidth, const unsigned int& newHeight) override;
+	/* Returns resolved color buffer */
+	unsigned int getColorBuffer() override;
+	unsigned int getDepthSnectilBuffer() override;
+	/* Reurns unresolved colorbuffer. ( with multisample informations ) */
+	unsigned int getColorBufferMS();
+protected:
+	MSFramebuffer() : Nsamples(0) {}
+private:	
+	Framebuffer* intermediateFBO;
+};