1 /*
   2  * Copyright (c) 2019, 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.metal;
  27 
  28 import sun.java2d.SurfaceData;
  29 import sun.java2d.SurfaceDataProxy;
  30 import sun.java2d.loops.CompositeType;
  31 
  32 import java.awt.*;
  33 
  34 /**
  35  * The proxy class contains the logic for when to replace a
  36  * SurfaceData with a cached OGL Texture and the code to create
  37  * the accelerated surfaces.
  38  */
  39 public class MTLSurfaceDataProxy extends SurfaceDataProxy {
  40     public static SurfaceDataProxy createProxy(SurfaceData srcData,
  41                                                MTLGraphicsConfig dstConfig)
  42     {
  43         if (srcData instanceof MTLSurfaceData) {
  44             // srcData must be a VolatileImage which either matches
  45             // our pixel format or not - either way we do not cache it...
  46             return UNCACHED;
  47         }
  48 
  49         return new MTLSurfaceDataProxy(dstConfig, srcData.getTransparency());
  50     }
  51 
  52     MTLGraphicsConfig oglgc;
  53     int transparency;
  54 
  55     public MTLSurfaceDataProxy(MTLGraphicsConfig oglgc, int transparency) {
  56         this.oglgc = oglgc;
  57         this.transparency = transparency;
  58     }
  59 
  60     @Override
  61     public SurfaceData validateSurfaceData(SurfaceData srcData,
  62                                            SurfaceData cachedData,
  63                                            int w, int h)
  64     {
  65         if (cachedData == null) {
  66             try {
  67                 cachedData = oglgc.createManagedSurface(w, h, transparency);
  68             } catch (OutOfMemoryError er) {
  69                 return null;
  70             }
  71         }
  72         return cachedData;
  73     }
  74 
  75     @Override
  76     public boolean isSupportedOperation(SurfaceData srcData,
  77                                         int txtype,
  78                                         CompositeType comp,
  79                                         Color bgColor)
  80     {
  81         return comp.isDerivedFrom(CompositeType.AnyAlpha) &&
  82                 (bgColor == null || transparency == Transparency.OPAQUE);
  83     }
  84 }