1 /*
   2  * Copyright (c) 2003, 2008, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 package sun.java2d.opengl;
  27 
  28 import java.awt.GraphicsConfiguration;
  29 import java.awt.GraphicsDevice;
  30 import java.awt.GraphicsEnvironment;
  31 import java.awt.Image;
  32 import java.awt.Rectangle;
  33 import java.awt.Transparency;
  34 import java.awt.image.ColorModel;
  35 import sun.awt.X11ComponentPeer;
  36 import sun.java2d.SurfaceData;
  37 import sun.java2d.loops.SurfaceType;
  38 
  39 public abstract class GLXSurfaceData extends OGLSurfaceData {
  40 
  41     protected X11ComponentPeer peer;
  42     private GLXGraphicsConfig graphicsConfig;
  43 
  44     private native void initOps(X11ComponentPeer peer, long aData);
  45     protected native boolean initPbuffer(long pData, long pConfigInfo,
  46                                          boolean isOpaque,
  47                                          int width, int height);
  48 
  49     protected GLXSurfaceData(X11ComponentPeer peer, GLXGraphicsConfig gc,
  50                              ColorModel cm, int type)
  51     {
  52         super(gc, cm, type);
  53         this.peer = peer;
  54         this.graphicsConfig = gc;
  55         initOps(peer, graphicsConfig.getAData());
  56     }
  57 
  58     public GraphicsConfiguration getDeviceConfiguration() {
  59         return graphicsConfig;
  60     }
  61 
  62     /**
  63      * Creates a SurfaceData object representing the primary (front) buffer
  64      * of an on-screen Window.
  65      */
  66     public static GLXWindowSurfaceData createData(X11ComponentPeer peer) {
  67         GLXGraphicsConfig gc = getGC(peer);
  68         return new GLXWindowSurfaceData(peer, gc);
  69     }
  70 
  71     /**
  72      * Creates a SurfaceData object representing the back buffer of a
  73      * double-buffered on-screen Window.
  74      */
  75     public static GLXOffScreenSurfaceData createData(X11ComponentPeer peer,
  76                                                      Image image,
  77                                                      int type)
  78     {
  79         GLXGraphicsConfig gc = getGC(peer);
  80         Rectangle r = peer.getBounds();
  81         if (type == FLIP_BACKBUFFER) {
  82             return new GLXOffScreenSurfaceData(peer, gc, r.width, r.height,
  83                                                image, peer.getColorModel(),
  84                                                FLIP_BACKBUFFER);
  85         } else {
  86             return new GLXVSyncOffScreenSurfaceData(peer, gc, r.width, r.height,
  87                                                     image, peer.getColorModel(),
  88                                                     type);
  89         }
  90     }
  91 
  92     /**
  93      * Creates a SurfaceData object representing an off-screen buffer (either
  94      * a Pbuffer or Texture).
  95      */
  96     public static GLXOffScreenSurfaceData createData(GLXGraphicsConfig gc,
  97                                                      int width, int height,
  98                                                      ColorModel cm,
  99                                                      Image image, int type)
 100     {
 101         return new GLXOffScreenSurfaceData(null, gc, width, height,
 102                                            image, cm, type);
 103     }
 104 
 105     public static GLXGraphicsConfig getGC(X11ComponentPeer peer) {
 106         if (peer != null) {
 107             return (GLXGraphicsConfig)peer.getGraphicsConfiguration();
 108         } else {
 109             // REMIND: this should rarely (never?) happen, but what if
 110             //         default config is not GLX?
 111             GraphicsEnvironment env =
 112                 GraphicsEnvironment.getLocalGraphicsEnvironment();
 113             GraphicsDevice gd = env.getDefaultScreenDevice();
 114             return (GLXGraphicsConfig)gd.getDefaultConfiguration();
 115         }
 116     }
 117 
 118     public static class GLXWindowSurfaceData extends GLXSurfaceData {
 119 
 120         public GLXWindowSurfaceData(X11ComponentPeer peer,
 121                                     GLXGraphicsConfig gc)
 122         {
 123             super(peer, gc, peer.getColorModel(), WINDOW);
 124         }
 125 
 126         public SurfaceData getReplacement() {
 127             return peer.getSurfaceData();
 128         }
 129 
 130         public Rectangle getBounds() {
 131             Rectangle r = peer.getBounds();
 132             r.x = r.y = 0;
 133             return r;
 134         }
 135 
 136         /**
 137          * Returns destination Component associated with this SurfaceData.
 138          */
 139         public Object getDestination() {
 140             return peer.getTarget();
 141         }
 142     }
 143 
 144     /**
 145      * A surface which implements a v-synced flip back-buffer with COPIED
 146      * FlipContents.
 147      *
 148      * This surface serves as a back-buffer to the outside world, while
 149      * it is actually an offscreen surface. When the BufferStrategy this surface
 150      * belongs to is showed, it is first copied to the real private
 151      * FLIP_BACKBUFFER, which is then flipped.
 152      */
 153     public static class GLXVSyncOffScreenSurfaceData extends
 154         GLXOffScreenSurfaceData
 155     {
 156         private GLXOffScreenSurfaceData flipSurface;
 157 
 158         public GLXVSyncOffScreenSurfaceData(X11ComponentPeer peer,
 159                                             GLXGraphicsConfig gc,
 160                                             int width, int height,
 161                                             Image image, ColorModel cm,
 162                                             int type)
 163         {
 164             super(peer, gc, width, height, image, cm, type);
 165             flipSurface = GLXSurfaceData.createData(peer, image, FLIP_BACKBUFFER);
 166         }
 167 
 168         public SurfaceData getFlipSurface() {
 169             return flipSurface;
 170         }
 171 
 172         @Override
 173         public void flush() {
 174             flipSurface.flush();
 175             super.flush();
 176         }
 177 
 178     }
 179 
 180     public static class GLXOffScreenSurfaceData extends GLXSurfaceData {
 181 
 182         private Image offscreenImage;
 183         private int width, height;
 184 
 185         public GLXOffScreenSurfaceData(X11ComponentPeer peer,
 186                                        GLXGraphicsConfig gc,
 187                                        int width, int height,
 188                                        Image image, ColorModel cm,
 189                                        int type)
 190         {
 191             super(peer, gc, cm, type);
 192 
 193             this.width = width;
 194             this.height = height;
 195             offscreenImage = image;
 196 
 197             initSurface(width, height);
 198         }
 199 
 200         public SurfaceData getReplacement() {
 201             return restoreContents(offscreenImage);
 202         }
 203 
 204         public Rectangle getBounds() {
 205             if (type == FLIP_BACKBUFFER) {
 206                 Rectangle r = peer.getBounds();
 207                 r.x = r.y = 0;
 208                 return r;
 209             } else {
 210                 return new Rectangle(width, height);
 211             }
 212         }
 213 
 214         /**
 215          * Returns destination Image associated with this SurfaceData.
 216          */
 217         public Object getDestination() {
 218             return offscreenImage;
 219         }
 220     }
 221 }