/*
 * 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.windows.wgl;

import javax.media.opengl.*;
import com.sun.opengl.impl.*;

public class WindowsOnscreenWGLDrawable extends WindowsWGLDrawable {
  private static final boolean PROFILING = Debug.debug("WindowsOnscreenWGLDrawable.profiling");
  private static final int PROFILING_TICKS = 200;
  private int  profilingLockSurfaceTicks;
  private long profilingLockSurfaceTime;
  private int  profilingUnlockSurfaceTicks;
  private long profilingUnlockSurfaceTime;
  private int  profilingSwapBuffersTicks;
  private long profilingSwapBuffersTime;

  protected WindowsOnscreenWGLDrawable(GLDrawableFactory factory, NativeWindow component,
                                   GLCapabilities capabilities,
                                   GLCapabilitiesChooser chooser) {
    super(factory, component, false, capabilities, chooser);
  }

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

  public int getWidth() {
    return component.getWidth();
  }

  public int getHeight() {
    return component.getHeight();
  }

  public void swapBuffers() throws GLException {
    boolean didLock = false;

    if (getNativeWindow().getSurfaceHandle() == 0) {
      if (lockSurface() == NativeWindow.LOCK_SURFACE_NOT_READY) {
        return;
      }
      didLock = true;
    }

    long startTime = 0;
    if (PROFILING) {
      startTime = System.currentTimeMillis();
    }

    if (!WGL.SwapBuffers(getNativeWindow().getSurfaceHandle()) && (WGL.GetLastError() != 0)) {
      throw new GLException("Error swapping buffers");
    }

    if (PROFILING) {
      long endTime = System.currentTimeMillis();
      profilingSwapBuffersTime += (endTime - startTime);
      int ticks = PROFILING_TICKS;
      if (++profilingSwapBuffersTicks == ticks) {
        System.err.println("SwapBuffers calls: " + profilingSwapBuffersTime + " ms / " + ticks + "  calls (" +
                           ((float) profilingSwapBuffersTime / (float) ticks) + " ms/call)");
        profilingSwapBuffersTime = 0;
        profilingSwapBuffersTicks = 0;
      }
    }

    if (didLock) {
      unlockSurface();
    }
  }

}