#pragma once
#include <string>
#include <map>
#include <GL/glew.h>
#include "Shader.h"
#include "SceneContext.h"

class Multipass
{
public:
	Multipass();
	
	~Multipass();

	void setDrawBuffers();
	void bindToFrameBuffer(GLenum type, GLenum texture, std::string texName);

	void addTexture(const std::string &tex_name, GLuint filter, GLuint type, GLuint type_2, GLuint type_3,
					bool depth, SceneContext &scnctx, GLuint height = 0, GLuint width = 0);

	void enableFrameBufferTexture(const std::string tex_name);
	void drawResultToScreen(SceneContext &scnctx);
	GLuint getCurrentTexture();

	Shader *shader;
private:

	void _createQuad();

	GLuint _fboId;

	GLuint _quad_vao;
	GLuint _quad_vbo;	
	std::string _current_tex;
	std::map<std::string, GLuint> _pass_textures;

	GLenum _draw_buffers[5];
	GLuint _draw_buffers_size;
};