1 /*
   2  * Copyright (c) 2003, 2015, 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.image.ColorModel;
  34 
  35 import sun.awt.X11ComponentPeer;
  36 import sun.java2d.SurfaceData;
  37 
  38 public abstract class GLXSurfaceData extends OGLSurfaceData {
  39 
  40     protected X11ComponentPeer peer;
  41     private GLXGraphicsConfig graphicsConfig;
  42 
  43     private native void initOps(X11ComponentPeer peer, long aData);
  44 
  45     protected GLXSurfaceData(X11ComponentPeer peer, GLXGraphicsConfig gc,
  46                              ColorModel cm, int type)
  47     {
  48         super(gc, cm, type);
  49         this.peer = peer;
  50         this.graphicsConfig = gc;
  51         initOps(peer, graphicsConfig.getAData());
  52     }
  53 
  54     public GraphicsConfiguration getDeviceConfiguration() {
  55         return graphicsConfig;
  56     }
  57 
  58     /**
  59      * Creates a SurfaceData object representing the primary (front) buffer
  60      * of an on-screen Window.
  61      */
  62     public static GLXWindowSurfaceData createData(X11ComponentPeer peer) {
  63         GLXGraphicsConfig gc = getGC(peer);
  64         return new GLXWindowSurfaceData(peer, gc);
  65     }
  66 
  67     /**
  68      * Creates a SurfaceData object representing the back buffer of a
  69      * double-buffered on-screen Window.
  70      */
  71     public static GLXOffScreenSurfaceData createData(X11ComponentPeer peer,
  72                                                      Image image,
  73                                                      int type)
  74     {
  75         GLXGraphicsConfig gc = getGC(peer);
  76         Rectangle r = peer.getBounds();
  77         if (type == FLIP_BACKBUFFER) {
  78             return new GLXOffScreenSurfaceData(peer, gc, r.width, r.height,
  79                                                image, peer.getColorModel(),
  80                                                FLIP_BACKBUFFER);
  81         } else {
  82             return new GLXVSyncOffScreenSurfaceData(peer, gc, r.width, r.height,
  83                                                     image, peer.getColorModel(),
  84                                                     type);
  85         }
  86     }
  87 
  88     /**
  89      * Creates a SurfaceData object representing an off-screen buffer (either
  90      * a Pbuffer or Texture).
  91      */
  92     public static GLXOffScreenSurfaceData createData(GLXGraphicsConfig gc,
  93                                                      int width, int height,
  94                                                      ColorModel cm,
  95                                                      Image image, int type)
  96     {
  97         return new GLXOffScreenSurfaceData(null, gc, width, height,
  98                                            image, cm, type);
  99     }
 100 
 101     public static GLXGraphicsConfig getGC(X11ComponentPeer peer) {
 102         if (peer != null) {
 103             return (GLXGraphicsConfig)peer.getGraphicsConfiguration();
 104         } else {
 105             // REMIND: this should rarely (never?) happen, but what if
 106             //         default config is not GLX?
 107             GraphicsEnvironment env =
 108                 GraphicsEnvironment.getLocalGraphicsEnvironment();
 109             GraphicsDevice gd = env.getDefaultScreenDevice();
 110             return (GLXGraphicsConfig)gd.getDefaultConfiguration();
 111         }
 112     }
 113 
 114     public static class GLXWindowSurfaceData extends GLXSurfaceData {
 115 
 116         public GLXWindowSurfaceData(X11ComponentPeer peer,
 117                                     GLXGraphicsConfig gc)
 118         {
 119             super(peer, gc, peer.getColorModel(), WINDOW);
 120         }
 121 
 122         public SurfaceData getReplacement() {
 123             return peer.getSurfaceData();
 124         }
 125 
 126         public Rectangle getBounds() {
 127             Rectangle r = peer.getBounds();
 128             r.x = r.y = 0;
 129             return r;
 130         }
 131 
 132         /**
 133          * Returns destination Component associated with this SurfaceData.
 134          */
 135         public Object getDestination() {
 136             return peer.getTarget();
 137         }
 138     }
 139 
 140     /**
 141      * A surface which implements a v-synced flip back-buffer with COPIED
 142      * FlipContents.
 143      *
 144      * This surface serves as a back-buffer to the outside world, while
 145      * it is actually an offscreen surface. When the BufferStrategy this surface
 146      * belongs to is showed, it is first copied to the real private
 147      * FLIP_BACKBUFFER, which is then flipped.
 148      */
 149     public static class GLXVSyncOffScreenSurfaceData extends
 150         GLXOffScreenSurfaceData
 151     {
 152         private GLXOffScreenSurfaceData flipSurface;
 153 
 154         public GLXVSyncOffScreenSurfaceData(X11ComponentPeer peer,
 155                                             GLXGraphicsConfig gc,
 156                                             int width, int height,
 157                                             Image image, ColorModel cm,
 158                                             int type)
 159         {
 160             super(peer, gc, width, height, image, cm, type);
 161             flipSurface = GLXSurfaceData.createData(peer, image, FLIP_BACKBUFFER);
 162         }
 163 
 164         public SurfaceData getFlipSurface() {
 165             return flipSurface;
 166         }
 167 
 168         @Override
 169         public void flush() {
 170             flipSurface.flush();
 171             super.flush();
 172         }
 173 
 174     }
 175 
 176     public static class GLXOffScreenSurfaceData extends GLXSurfaceData {
 177 
 178         private Image offscreenImage;
 179         private int width, height;
 180 
 181         public GLXOffScreenSurfaceData(X11ComponentPeer peer,
 182                                        GLXGraphicsConfig gc,
 183                                        int width, int height,
 184                                        Image image, ColorModel cm,
 185                                        int type)
 186         {
 187             super(peer, gc, cm, type);
 188 
 189             this.width = width;
 190             this.height = height;
 191             offscreenImage = image;
 192 
 193             initSurface(width, height);
 194         }
 195 
 196         public SurfaceData getReplacement() {
 197             return restoreContents(offscreenImage);
 198         }
 199 
 200         public Rectangle getBounds() {
 201             if (type == FLIP_BACKBUFFER) {
 202                 Rectangle r = peer.getBounds();
 203                 r.x = r.y = 0;
 204                 return r;
 205             } else {
 206                 return new Rectangle(width, height);
 207             }
 208         }
 209 
 210         /**
 211          * Returns destination Image associated with this SurfaceData.
 212          */
 213         public Object getDestination() {
 214             return offscreenImage;
 215         }
 216     }
 217 }