1 /*
   2  * Copyright (c) 2011, 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.BufferCapabilities;
  29 import static java.awt.BufferCapabilities.FlipContents.*;
  30 import java.awt.Component;
  31 import java.awt.GraphicsConfiguration;
  32 import java.awt.Transparency;
  33 import java.awt.image.ColorModel;
  34 import java.awt.peer.ComponentPeer;
  35 
  36 import sun.awt.AWTAccessor;
  37 import sun.awt.AWTAccessor.ComponentAccessor;
  38 import sun.awt.image.SunVolatileImage;
  39 import sun.awt.image.VolatileSurfaceManager;
  40 import sun.java2d.BackBufferCapsProvider;
  41 import sun.java2d.SurfaceData;
  42 import static sun.java2d.opengl.OGLContext.OGLContextCaps.*;
  43 import sun.java2d.pipe.hw.ExtendedBufferCapabilities;
  44 import static sun.java2d.pipe.hw.ExtendedBufferCapabilities.VSyncType.*;
  45 
  46 public class CGLVolatileSurfaceManager extends VolatileSurfaceManager {
  47 
  48     private boolean accelerationEnabled;
  49 
  50     public CGLVolatileSurfaceManager(SunVolatileImage vImg, Object context) {
  51         super(vImg, context);
  52 
  53         /*
  54          * We will attempt to accelerate this image only under the
  55          * following conditions:
  56          *   - the image is opaque OR
  57          *   - the image is translucent AND
  58          *       - the GraphicsConfig supports the FBO extension OR
  59          *       - the GraphicsConfig has a stored alpha channel
  60          */
  61         int transparency = vImg.getTransparency();
  62         CGLGraphicsConfig gc = (CGLGraphicsConfig)vImg.getGraphicsConfig();
  63         accelerationEnabled =
  64             (transparency == Transparency.OPAQUE) ||
  65             ((transparency == Transparency.TRANSLUCENT) &&
  66              (gc.isCapPresent(CAPS_EXT_FBOBJECT) ||
  67               gc.isCapPresent(CAPS_STORED_ALPHA)));
  68     }
  69 
  70     protected boolean isAccelerationEnabled() {
  71         return accelerationEnabled;
  72     }
  73 
  74     /**
  75      * Create a pbuffer-based SurfaceData object (or init the backbuffer
  76      * of an existing window if this is a double buffered GraphicsConfig)
  77      */
  78     protected SurfaceData initAcceleratedSurface() {
  79         SurfaceData sData = null;
  80         Component comp = vImg.getComponent();
  81         final ComponentAccessor acc = AWTAccessor.getComponentAccessor();
  82         final ComponentPeer peer = (comp != null) ? acc.getPeer(comp) : null;
  83 
  84         try {
  85             boolean createVSynced = false;
  86             boolean forceback = false;
  87             if (context instanceof Boolean) {
  88                 forceback = ((Boolean)context).booleanValue();
  89                 if (forceback && peer instanceof BackBufferCapsProvider) {
  90                     BackBufferCapsProvider provider =
  91                         (BackBufferCapsProvider)peer;
  92                     BufferCapabilities caps = provider.getBackBufferCaps();
  93                     if (caps instanceof ExtendedBufferCapabilities) {
  94                         ExtendedBufferCapabilities ebc =
  95                             (ExtendedBufferCapabilities)caps;
  96                         if (ebc.getVSync() == VSYNC_ON &&
  97                             ebc.getFlipContents() == COPIED)
  98                         {
  99                             createVSynced = true;
 100                             forceback = false;
 101                         }
 102                     }
 103                 }
 104             }
 105 
 106             if (forceback) {
 107                 // peer must be non-null in this case
 108                 // TODO: modify parameter to delegate
 109                 //                sData = CGLSurfaceData.createData(peer, vImg, FLIP_BACKBUFFER);
 110             } else {
 111                 CGLGraphicsConfig gc =
 112                     (CGLGraphicsConfig)vImg.getGraphicsConfig();
 113                 ColorModel cm = gc.getColorModel(vImg.getTransparency());
 114                 int type = vImg.getForcedAccelSurfaceType();
 115                 // if acceleration type is forced (type != UNDEFINED) then
 116                 // use the forced type, otherwise choose one based on caps
 117                 if (type == OGLSurfaceData.UNDEFINED) {
 118                     type = gc.isCapPresent(CAPS_EXT_FBOBJECT) ?
 119                         OGLSurfaceData.FBOBJECT : OGLSurfaceData.PBUFFER;
 120                 }
 121                 if (createVSynced) {
 122                     // TODO: modify parameter to delegate
 123 //                  sData = CGLSurfaceData.createData(peer, vImg, type);
 124                 } else {
 125                     sData = CGLSurfaceData.createData(gc,
 126                                                       vImg.getWidth(),
 127                                                       vImg.getHeight(),
 128                                                       cm, vImg, type);
 129                 }
 130             }
 131         } catch (NullPointerException ex) {
 132             sData = null;
 133         } catch (OutOfMemoryError er) {
 134             sData = null;
 135         }
 136 
 137         return sData;
 138     }
 139 
 140     @Override
 141     protected boolean isConfigValid(GraphicsConfiguration gc) {
 142         return ((gc == null) || (gc == vImg.getGraphicsConfig()));
 143     }
 144 
 145     @Override
 146     public void initContents() {
 147         if (vImg.getForcedAccelSurfaceType() != OGLSurfaceData.TEXTURE) {
 148             super.initContents();
 149         }
 150     }
 151 }
 152 
--- EOF ---