/*************************************************************************/
/*  context_gl_x11.h                                                     */
/*************************************************************************/
/*                       This file is part of:                           */
/*                           GODOT ENGINE                                */
/*                      https://godotengine.org                          */
/*************************************************************************/
/* Copyright (c) 2007-2021 Juan Linietsky, Ariel Manzur.                 */
/* Copyright (c) 2014-2021 Godot Engine contributors (cf. AUTHORS.md).   */
/*                                                                       */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* 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:                                             */
/*                                                                       */
/* The above copyright notice and this permission notice shall be        */
/* included in all copies or substantial portions of the Software.       */
/*                                                                       */
/* 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.*/
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
/*************************************************************************/

#ifndef CONTEXT_GL_X11_H
#define CONTEXT_GL_X11_H

#ifdef X11_ENABLED

#if defined(OPENGL_ENABLED)

#include "core/os/os.h"
#include <X11/Xlib.h>
#include <X11/extensions/Xrender.h>

struct ContextGL_X11_Private;

class ContextGL_X11 {
public:
	enum ContextType {
		OLDSTYLE,
		GLES_2_0_COMPATIBLE,
		GLES_3_0_COMPATIBLE
	};

private:
	ContextGL_X11_Private *p;
	OS::VideoMode default_video_mode;
	//::Colormap x11_colormap;
	::Display *x11_display;
	::Window &x11_window;
	bool double_buffer;
	bool direct_render;
	int glx_minor, glx_major;
	bool use_vsync;
	ContextType context_type;

public:
	void release_current();
	void make_current();
	void swap_buffers();
	int get_window_width();
	int get_window_height();
	void *get_glx_context();

	bool is_offscreen_available() const;
	void make_offscreen_current();
	void release_offscreen_current();

	Error initialize();

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

	ContextGL_X11(::Display *p_x11_display, ::Window &p_x11_window, const OS::VideoMode &p_default_video_mode, ContextType p_context_type);
	~ContextGL_X11();
};

#endif

#endif
#endif