/*************************************************************************/
/*  context_gl_windows.h                                                 */
/*************************************************************************/
/*                       This file is part of:                           */
/*                           GODOT ENGINE                                */
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/* Copyright (c) 2007-2019 Juan Linietsky, Ariel Manzur.                 */
/* Copyright (c) 2014-2019 Godot Engine contributors (cf. AUTHORS.md)    */
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/* a copy of this software and associated documentation files (the       */
/* "Software"), to deal in the Software without restriction, including   */
/* without limitation the rights to use, copy, modify, merge, publish,   */
/* distribute, sublicense, and/or sell copies of the Software, and to    */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions:                                             */
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/* The above copyright notice and this permission notice shall be        */
/* included in all copies or substantial portions of the Software.       */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
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/*************************************************************************/

#if defined(OPENGL_ENABLED) || defined(GLES_ENABLED)

// Author: Juan Linietsky <reduzio@gmail.com>, (C) 2008

#ifndef CONTEXT_GL_WIN_H
#define CONTEXT_GL_WIN_H

#include "core/error_list.h"
#include "core/os/os.h"

#include <windows.h>

typedef bool(APIENTRY *PFNWGLSWAPINTERVALEXTPROC)(int interval);

class ContextGL_Windows {

	HDC hDC;
	HGLRC hRC;
	unsigned int pixel_format;
	HWND hWnd;
	bool opengl_3_context;
	bool use_vsync;
	bool vsync_via_compositor;

	PFNWGLSWAPINTERVALEXTPROC wglSwapIntervalEXT;

	static bool should_vsync_via_compositor();

public:
	void release_current();

	void make_current();

	int get_window_width();
	int get_window_height();
	void swap_buffers();

	Error initialize();

	void set_use_vsync(bool p_use);
	bool is_using_vsync() const;

	ContextGL_Windows(HWND hwnd, bool p_opengl_3_context);
	~ContextGL_Windows();
};

#endif
#endif