/*
   render/textures.h
   This file is part of the Osirion project and is distributed under
   the terms of the GNU General Public License version 2
*/

#ifndef __INCLUDED_RENDER_TEXTURES_H__
#define __INCLUDED_RENDER_TEXTURES_H__

#include <string>
#include <map>

#include "render/gl.h"

namespace render
{

const size_t MAXTEXTURES = 256;

/// Texture managment
class Textures
{
public:
	/// Initialize the textures registry
	static void init();

	/// Shutdown the textures registry
	static void shutdown();

	/// Load a texture
	/** Returns 0 on failure, and the texture index on success
	 */
	static size_t load(std::string name, bool filter = true);

	/// bind a texture for OpenGL usage
	/** Returns 0 on failure, and the texture index on success
	 */
	static size_t bind(std::string name, bool filter = true);

	/// bind a texture for OpenGL usage
	static size_t bind(size_t texture, bool filter = true);

	/// find the texture index for a given name
	static size_t find(std::string name);

private:
	static void clear();

	static void set_filter(bool filter);

	typedef std::map<std::string, size_t>::iterator iterator;

	static std::map<std::string, size_t> registry;
	static size_t index;
	static GLuint textures[MAXTEXTURES];
};

}

#endif // __INCLUDED_RENDER_TEXTURES_H__