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/**************************************************************************/
/*  config.h                                                              */
/**************************************************************************/
/*                         This file is part of:                          */
/*                             GODOT ENGINE                               */
/*                        https://godotengine.org                         */
/**************************************************************************/
/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
/*                                                                        */
/* 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 CONFIG_GLES3_H
#define CONFIG_GLES3_H

#ifdef GLES3_ENABLED

#include "core/string/ustring.h"
#include "core/templates/hash_set.h"

// This must come first to avoid windows.h mess
#include "platform_config.h"
#ifndef OPENGL_INCLUDE_H
#include <GLES3/gl3.h>
#else
#include OPENGL_INCLUDE_H
#endif

#ifdef ANDROID_ENABLED
typedef void (*PFNGLFRAMEBUFFERTEXTUREMULTIVIEWOVRPROC)(GLenum, GLenum, GLuint, GLint, GLint, GLsizei);
#endif

namespace GLES3 {

class Config {
private:
	static Config *singleton;

public:
	bool use_nearest_mip_filter = false;
	bool use_depth_prepass = true;

	int max_vertex_texture_image_units = 0;
	int max_texture_image_units = 0;
	int max_texture_size = 0;
	int max_viewport_size[2] = { 0, 0 };
	int max_uniform_buffer_size = 0;
	int max_renderable_elements = 0;
	int max_renderable_lights = 0;
	int max_lights_per_object = 0;

	// TODO implement wireframe in OpenGL
	// bool generate_wireframes;

	HashSet<String> extensions;

	bool float_texture_supported = false;
	bool s3tc_supported = false;
	bool rgtc_supported = false;
	bool bptc_supported = false;
	bool etc2_supported = false;
	bool astc_supported = false;
	bool astc_hdr_supported = false;
	bool astc_layered_supported = false;

	bool force_vertex_shading = false;

	bool support_anisotropic_filter = false;
	float anisotropic_level = 0.0f;

	bool multiview_supported = false;
#ifdef ANDROID_ENABLED
	PFNGLFRAMEBUFFERTEXTUREMULTIVIEWOVRPROC eglFramebufferTextureMultiviewOVR = nullptr;
#endif

	static Config *get_singleton() { return singleton; };

	Config();
	~Config();
};

} // namespace GLES3

#endif // GLES3_ENABLED

#endif // CONFIG_GLES3_H