JDK14/Java14源码在线阅读

/*
 * Copyright (c) 2008, 2014, 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
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 */

package sun.java2d.d3d;

import java.awt.Color;
import java.awt.Transparency;

import sun.java2d.InvalidPipeException;
import sun.java2d.SurfaceData;
import sun.java2d.SurfaceDataProxy;
import sun.java2d.loops.CompositeType;

/**
 * The proxy class contains the logic for when to replace a
 * SurfaceData with a cached D3D Texture and the code to create
 * the accelerated surfaces.
 */
public class D3DSurfaceDataProxy extends SurfaceDataProxy {

    public static SurfaceDataProxy createProxy(SurfaceData srcData,
                                               D3DGraphicsConfig dstConfig)
    {
        if (srcData instanceof D3DSurfaceData) {
            // srcData must be a VolatileImage which either matches
            // our pixel format or not - either way we do not cache it...
            return UNCACHED;
        }

        return new D3DSurfaceDataProxy(dstConfig, srcData.getTransparency());
    }

    D3DGraphicsConfig d3dgc;
    int transparency;

    public D3DSurfaceDataProxy(D3DGraphicsConfig d3dgc, int transparency) {
        this.d3dgc = d3dgc;
        this.transparency = transparency;
        // REMIND: we may want to change this for the d3d pipeline, it's not
        // necessary to invalidate them all at once on display change
        activateDisplayListener();
    }

    @Override
    public SurfaceData validateSurfaceData(SurfaceData srcData,
                                           SurfaceData cachedData,
                                           int w, int h)
    {
        if (cachedData == null || cachedData.isSurfaceLost()) {
            try {
                cachedData = d3dgc.createManagedSurface(w, h, transparency);
            } catch (InvalidPipeException e) {
                if (!D3DGraphicsDevice.isD3DAvailable()) {
                    invalidate();
                    flush();
                    return null;
                }
            }
        }

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