/* * Copyright (c) 2007, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation.  Oracle designates this * particular file as subject to the "Classpath" exception as provided * by Oracle in the LICENSE file that accompanied this code. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ package sun.java2d.opengl; import java.awt.Color;import java.awt.Transparency; import sun.java2d.SurfaceData;import sun.java2d.SurfaceDataProxy;import sun.java2d.loops.SurfaceType;import sun.java2d.loops.CompositeType; /** * The proxy class contains the logic for when to replace a * SurfaceData with a cached OGL Texture and the code to create * the accelerated surfaces. */public class OGLSurfaceDataProxy extends SurfaceDataProxy {    public static SurfaceDataProxy createProxy(SurfaceData srcData,                                               OGLGraphicsConfig dstConfig)    {        if (srcData instanceof OGLSurfaceData) {            // srcData must be a VolatileImage which either matches            // our pixel format or not - either way we do not cache it...            return UNCACHED;        }         return new OGLSurfaceDataProxy(dstConfig, srcData.getTransparency());    }     OGLGraphicsConfig oglgc;    int transparency;     public OGLSurfaceDataProxy(OGLGraphicsConfig oglgc, int transparency) {        this.oglgc = oglgc;        this.transparency = transparency;    }     @Override    public SurfaceData validateSurfaceData(SurfaceData srcData,                                           SurfaceData cachedData,                                           int w, int h)    {        if (cachedData == null) {            cachedData = oglgc.createManagedSurface(w, h, transparency);        }        return cachedData;    }     @Override    public boolean isSupportedOperation(SurfaceData srcData,                                        int txtype,                                        CompositeType comp,                                        Color bgColor)    {        return (bgColor == null || transparency == Transparency.OPAQUE);    }}