// ----------------------------------------------------------------

// From Game Programming in C++ by Sanjay Madhav

// Copyright (C) 2017 Sanjay Madhav. All rights reserved.

//

// Released under the BSD License

// See LICENSE in root directory for full details.

// ----------------------------------------------------------------

#pragma once

#include <vector>

class GBuffer

{

public:

// Different types of data stored in the G-buffer

enum Type

{

EDiffuse = 0,

ENormal,

EWorldPos,

NUM_GBUFFER_TEXTURES

};

GBuffer();

~GBuffer();

// Create/destroy the G-buffer

bool Create(int width, int height);

void Destroy();

// Get the texture for a specific type of data

class Texture* GetTexture(Type type);

// Get the framebuffer object ID

unsigned int GetBufferID() const { return mBufferID; }

// Setup all the G-buffer textures for sampling

void SetTexturesActive();

private:

// Textures associated with G-buffer

std::vector<class Texture*> mTextures;

// Frame buffer object ID

unsigned int mBufferID;

};