1 /*
   2  * Copyright (c) 2007, 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.Color;
  29 import java.awt.Transparency;
  30 
  31 import sun.java2d.SurfaceData;
  32 import sun.java2d.SurfaceDataProxy;
  33 import sun.java2d.loops.SurfaceType;
  34 import sun.java2d.loops.CompositeType;
  35 
  36 /**
  37  * The proxy class contains the logic for when to replace a
  38  * SurfaceData with a cached OGL Texture and the code to create
  39  * the accelerated surfaces.
  40  */
  41 public class OGLSurfaceDataProxy extends SurfaceDataProxy {
  42     public static SurfaceDataProxy createProxy(SurfaceData srcData,
  43                                                OGLGraphicsConfig dstConfig)
  44     {
  45         if (srcData instanceof OGLSurfaceData) {
  46             // srcData must be a VolatileImage which either matches
  47             // our pixel format or not - either way we do not cache it...
  48             return UNCACHED;
  49         }
  50 
  51         return new OGLSurfaceDataProxy(dstConfig, srcData.getTransparency());
  52     }
  53 
  54     OGLGraphicsConfig oglgc;
  55     int transparency;
  56 
  57     public OGLSurfaceDataProxy(OGLGraphicsConfig oglgc, int transparency) {
  58         this.oglgc = oglgc;
  59         this.transparency = transparency;
  60     }
  61 
  62     @Override
  63     public SurfaceData validateSurfaceData(SurfaceData srcData,
  64                                            SurfaceData cachedData,
  65                                            int w, int h)
  66     {
  67         if (cachedData == null) {
  68             cachedData = oglgc.createManagedSurface(w, h, transparency);
  69         }
  70         return cachedData;
  71     }
  72 
  73     @Override
  74     public boolean isSupportedOperation(SurfaceData srcData,
  75                                         int txtype,
  76                                         CompositeType comp,
  77                                         Color bgColor)
  78     {
  79         return (bgColor == null || transparency == Transparency.OPAQUE);
  80     }
  81 }