/**
	This file is a part of our_dick
	Copyright (C) 2020-2022 rexy712

	This program is free software: you can redistribute it and/or modify
	it under the terms of the GNU Affero General Public License as published by
	the Free Software Foundation, either version 3 of the License, or
	(at your option) any later version.

	This program is distributed in the hope that it will be useful,
	but WITHOUT ANY WARRANTY; without even the implied warranty of
	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
	GNU Affero General Public License for more details.

	You should have received a copy of the GNU Affero General Public License
	along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/

#ifndef OUR_DICK_MAIN_RENDERER_HPP
#define OUR_DICK_MAIN_RENDERER_HPP

#include "gfx/ogl/shader_program.hpp"
#include "gfx/ogl/vao.hpp"
#include "gfx/ogl/vbo.hpp"
#include "math/math.hpp"
#include "scene.hpp"
#include "gfx/resource_manager.hpp"
#include "basic_framebuffer.hpp"

#include <memory> //shared_ptr

class main_renderer
{
private:
	struct vertex{
		math::vec2<GLfloat> pos;
		math::vec2<GLfloat> tex_coord;
	};
	static constexpr vertex s_vertices[] = {
		{{-1.0f,  1.0f}, {0.0f, 1.0f}},
		{{-1.0f, -1.0f}, {0.0f, 0.0f}},
		{{ 1.0f, -1.0f}, {1.0f, 0.0f}},
		{{ 1.0f, -1.0f}, {1.0f, 0.0f}},
		{{ 1.0f,  1.0f}, {1.0f, 1.0f}},
		{{-1.0f,  1.0f}, {0.0f, 1.0f}}
	};
private:
	basic_framebuffer m_fb;
	gfx::ogl::fbo m_primary_fb;
	std::shared_ptr<gfx::ogl::shader_program> m_square_shader;
	std::shared_ptr<gfx::ogl::shader_program> m_screen_shader;
	gfx::ogl::vbo m_vbo;
	gfx::ogl::vao m_vao;
	gfx::ogl::vao m_board_vao;
	gfx::ogl::vbo m_board_vbo;

public:
	main_renderer(gfx::resource_manager& res, int width, int height);

	void set_vp_matrix(const math::mat4<GLfloat>& vp);
	void render(scene&);
	gfx::ogl::texture& color_buffer(void);
	void resize_viewport(int width, int height);
	const math::vec4<GLfloat>& get_viewport(void)const;
};


#endif