/*
 * Copyright (c) 2003 Sun Microsystems, Inc. All Rights Reserved.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 * 
 * - Redistribution of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 * 
 * - Redistribution in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in the
 *   documentation and/or other materials provided with the distribution.
 * 
 * Neither the name of Sun Microsystems, Inc. or the names of
 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 * 
 * This software is provided "AS IS," without a warranty of any kind. ALL
 * EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES,
 * INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A
 * PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN
 * MICROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL NOT BE LIABLE FOR
 * ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR
 * DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN OR
 * ITS LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR FOR
 * DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE
 * DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY,
 * ARISING OUT OF THE USE OF OR INABILITY TO USE THIS SOFTWARE, EVEN IF
 * SUN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
 * 
 * You acknowledge that this software is not designed or intended for use
 * in the design, construction, operation or maintenance of any nuclear
 * facility.
 * 
 * Sun gratefully acknowledges that this software was originally authored
 * and developed by Kenneth Bradley Russell and Christopher John Kline.
 */

package com.sun.opengl.impl.egl;

import javax.media.opengl.*;
import javax.media.nativewindow.*;
import javax.media.nativewindow.egl.*;
import com.sun.opengl.impl.*;
import com.sun.nativewindow.impl.NullWindow;

public class EGLOnscreenDrawable extends EGLDrawable {
    protected EGLOnscreenDrawable(EGLDrawableFactory factory, NativeWindow component) throws GLException {
        super(factory, component);
    }

    public GLContext createContext(GLContext shareWith) {
        return new EGLOnscreenContext(this, shareWith);
    }

    protected long createSurface(long eglDpy, _EGLConfig eglNativeCfg) {
        long surf = EGL.eglCreateWindowSurface(eglDpy, eglNativeCfg, component.getWindowHandle(), null);
        if (EGL.EGL_NO_SURFACE==surf) {
            throw new GLException("Creation of window surface (eglCreateWindowSurface) failed, component: "+component+", error 0x"+Integer.toHexString(EGL.eglGetError()));
        } else if(DEBUG) {
            System.err.println("setSurface result: eglSurface 0x"+Long.toHexString(surf));
        }
        return surf;
    }

    public void swapBuffers() throws GLException {
        boolean didLock = false;
        try {
          if ( !isSurfaceLocked() ) {
              // Usually the surface shall be locked within [makeCurrent .. swap .. release]
              if (lockSurface() == NativeWindow.LOCK_SURFACE_NOT_READY) {
                  return;
              }
              didLock = true;
          }

          EGL.eglSwapBuffers(eglDisplay, eglSurface);

        } finally {
          if(didLock) {
              unlockSurface();
          }
        }
    }

}