/*

 * Copyright 2005 Sun Microsystems, Inc.  All Rights Reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.  Sun designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Sun in the LICENSE file that accompanied this code.

 *

 * This code 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

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

 * CA 95054 USA or visit www.sun.com if you need additional information or

 * have any questions.

 */

package sun.java2d.d3d;

import java.awt.GraphicsConfiguration;

import java.awt.Image;

import java.awt.Transparency;

import java.awt.image.ColorModel;

import sun.awt.Win32GraphicsDevice;

import sun.java2d.loops.SurfaceType;

import sun.java2d.windows.Win32SurfaceData;

public class D3DBackBufferSurfaceData extends D3DSurfaceData {

    private Win32SurfaceData parentData;

    /**

     * Private constructor.  Use createData() to create an object.

     */

    private D3DBackBufferSurfaceData(int width, int height,

                                     SurfaceType sType, ColorModel cm,

                                     GraphicsConfiguration gc,

                                     Image image, int screen,

                                     Win32SurfaceData parentData)

    {

        super(width, height, D3DSurfaceData.D3D_ATTACHED_SURFACE,

              sType, cm, gc, image, Transparency.OPAQUE);

        this.parentData = parentData;

        initSurface(width, height, screen, parentData);

    }

    private native void restoreDepthBuffer();

    @Override

    public void restoreSurface() {

        parentData.restoreSurface();

        // The above call restores the primary surface

        // to which this backbuffer is attached. But

        // we need to explicitly restore the depth buffer

        // associated with this backbuffer surface, because it's not

        // part of a 'complex' primary surface, and thus will not be

        // restored as part of the primary surface restoration.

        restoreDepthBuffer();

    }

    public static D3DBackBufferSurfaceData

        createData(int width, int height,

                   ColorModel cm, GraphicsConfiguration gc,

                   Image image,

                   Win32SurfaceData parentData)

    {

        Win32GraphicsDevice gd = (Win32GraphicsDevice)gc.getDevice();

        if (!gd.isD3DEnabledOnDevice()) {

            return null;

        }

        SurfaceType sType = getSurfaceType(cm, Transparency.OPAQUE);

        return new

            D3DBackBufferSurfaceData(width, height,

                 getSurfaceType(gc, cm,

                                D3DSurfaceData.D3D_ATTACHED_SURFACE),

                 cm, gc, image,

                 gd.getScreen(), parentData);

    }

}