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/*
 * Renderer.java
 * Copyright (C) 2003
 *
 * $Id: Renderer.java,v 1.12 2008-03-02 15:40:27 cawe Exp $
 */
/*
Copyright (C) 1997-2001 Id Software, Inc.

This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
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 General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.

*/
package jake2.render;

import jake2.client.refexport_t;

import java.util.Vector;

/**
 * Renderer
 * 
 * @author cwei
 */
public class Renderer {
    
    static RenderAPI fastRenderer = new jake2.render.fast.Misc();
    static RenderAPI basicRenderer = new jake2.render.basic.Misc();

	static Vector drivers = new Vector(3);

	static {
	    try {
		try {
		    Class.forName("net.java.games.jogl.GL");
		    Class.forName("jake2.render.JoglRenderer");
		} catch (ClassNotFoundException e) {
		    // ignore the oldjogl drivers if runtime not in classpath
		}
		try {
		    Class.forName("org.lwjgl.opengl.GL11");
		    Class.forName("jake2.render.LwjglRenderer");
		} catch (ClassNotFoundException e) {
		    // ignore the lwjgl driver if runtime not in classpath
		}
		try {
		    Class.forName("javax.media.opengl.GL");
		    Class.forName("jake2.render.Jsr231Renderer");
		} catch (ClassNotFoundException e) {
		    // ignore the jnew ogl drivers if runtime not in classpath
		}
	    } catch (Throwable e) {
		e.printStackTrace();
	    }
	};

	public static void register(Ref impl) {
		if (impl == null) {
			throw new IllegalArgumentException("Ref implementation can't be null");
		}
		if (!drivers.contains(impl)) {
			drivers.add(impl);
		}
	}

    /**
     * Factory method to get the Renderer implementation.
     * @return refexport_t (Renderer singleton)
     */
    public static refexport_t getDriver(String driverName) {
        return getDriver(driverName, true);
    }

    /**
	 * Factory method to get the Renderer implementation.
	 * @return refexport_t (Renderer singleton)
	 */
	public static refexport_t getDriver(String driverName, boolean fast) {
		// find a driver
		Ref driver = null;
		int count = drivers.size();
		for (int i = 0; i < count; i++) {
			driver = (Ref) drivers.get(i);
			if (driver.getName().equals(driverName)) {
				return driver.GetRefAPI((fast) ? fastRenderer : basicRenderer);
			}
		}
		// null if driver not found
		return null;
	}
	
	public static String getDefaultName() {
		return (drivers.isEmpty()) ? null : ((Ref) drivers.firstElement()).getName();
	}

	public static String getPreferedName() {
		return (drivers.isEmpty()) ? null :  ((Ref) drivers.lastElement()).getName();
	}

	public static String[] getDriverNames() {
		if (drivers.isEmpty()) return null;
		int count = drivers.size();
		String[] names = new String[count];
		for (int i = 0; i < count; i++) {
			names[i] = ((Ref) drivers.get(i)).getName();
		}
		return names;
	}

}