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/*
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* Copyright (c) 2007, 2008, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Oracle designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Oracle in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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package sun.java2d.d3d;
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import java.awt.Component;
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import java.awt.GraphicsConfiguration;
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import java.awt.Image;
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import java.awt.Transparency;
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import java.awt.image.ColorModel;
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import sun.awt.Win32GraphicsConfig;
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import sun.awt.image.SunVolatileImage;
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import sun.awt.image.SurfaceManager;
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import sun.awt.image.VolatileSurfaceManager;
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import sun.awt.windows.WComponentPeer;
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import sun.java2d.InvalidPipeException;
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import sun.java2d.SurfaceData;
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import static sun.java2d.pipe.hw.AccelSurface.*;
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import static sun.java2d.d3d.D3DContext.D3DContextCaps.*;
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import sun.java2d.windows.GDIWindowSurfaceData;
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public class D3DVolatileSurfaceManager
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extends VolatileSurfaceManager
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{
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private boolean accelerationEnabled;
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private int restoreCountdown;
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public D3DVolatileSurfaceManager(SunVolatileImage vImg, Object context) {
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super(vImg, context);
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/*
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* We will attempt to accelerate this image only under the
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* following conditions:
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* - the image is opaque OR
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* - the image is translucent AND
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* - the GraphicsConfig supports the FBO extension OR
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* - the GraphicsConfig has a stored alpha channel
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*/
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int transparency = vImg.getTransparency();
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D3DGraphicsDevice gd = (D3DGraphicsDevice)
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vImg.getGraphicsConfig().getDevice();
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accelerationEnabled =
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(transparency == Transparency.OPAQUE) ||
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(transparency == Transparency.TRANSLUCENT &&
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(gd.isCapPresent(CAPS_RT_PLAIN_ALPHA) ||
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gd.isCapPresent(CAPS_RT_TEXTURE_ALPHA)));
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}
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protected boolean isAccelerationEnabled() {
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return accelerationEnabled;
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}
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public void setAccelerationEnabled(boolean accelerationEnabled) {
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this.accelerationEnabled = accelerationEnabled;
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}
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/**
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* Create a pbuffer-based SurfaceData object (or init the backbuffer
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* of an existing window if this is a double buffered GraphicsConfig).
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*/
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protected SurfaceData initAcceleratedSurface() {
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SurfaceData sData;
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Component comp = vImg.getComponent();
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WComponentPeer peer =
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(comp != null) ? (WComponentPeer)comp.getPeer() : null;
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try {
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boolean forceback = false;
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if (context instanceof Boolean) {
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forceback = ((Boolean)context).booleanValue();
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}
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if (forceback) {
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// peer must be non-null in this case
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sData = D3DSurfaceData.createData(peer, vImg);
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} else {
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D3DGraphicsConfig gc =
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(D3DGraphicsConfig)vImg.getGraphicsConfig();
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ColorModel cm = gc.getColorModel(vImg.getTransparency());
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int type = vImg.getForcedAccelSurfaceType();
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// if acceleration type is forced (type != UNDEFINED) then
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// use the forced type, otherwise use RT_TEXTURE
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if (type == UNDEFINED) {
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type = RT_TEXTURE;
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}
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sData = D3DSurfaceData.createData(gc,
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vImg.getWidth(),
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vImg.getHeight(),
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cm, vImg,
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type);
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}
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} catch (NullPointerException ex) {
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sData = null;
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} catch (OutOfMemoryError er) {
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sData = null;
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} catch (InvalidPipeException ipe) {
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sData = null;
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}
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return sData;
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}
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protected boolean isConfigValid(GraphicsConfiguration gc) {
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return ((gc == null) || (gc == vImg.getGraphicsConfig()));
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}
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/**
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* Set the number of iterations for restoreAcceleratedSurface to fail
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* before attempting to restore the accelerated surface.
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*
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* @see #restoreAcceleratedSurface
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* @see #handleVItoScreenOp
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*/
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private synchronized void setRestoreCountdown(int count) {
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restoreCountdown = count;
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}
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/**
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* Note that we create a new surface instead of restoring
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* an old one. This will help with D3DContext revalidation.
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*/
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@Override
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protected void restoreAcceleratedSurface() {
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synchronized (this) {
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if (restoreCountdown > 0) {
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restoreCountdown--;
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throw new
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InvalidPipeException("Will attempt to restore surface " +
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" in " + restoreCountdown);
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}
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}
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SurfaceData sData = initAcceleratedSurface();
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if (sData != null) {
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sdAccel = sData;
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} else {
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throw new InvalidPipeException("could not restore surface");
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// REMIND: alternatively, we could try this:
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// ((D3DSurfaceData)sdAccel).restoreSurface();
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}
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}
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/**
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* We're asked to restore contents by the accelerated surface, which means
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* that it had been lost.
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*/
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@Override
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public SurfaceData restoreContents() {
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acceleratedSurfaceLost();
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return super.restoreContents();
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}
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/**
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* If the destination surface's peer can potentially handle accelerated
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* on-screen rendering then it is likely that the condition which resulted
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* in VI to Screen operation is temporary, so this method sets the
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* restore countdown in hope that the on-screen accelerated rendering will
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* resume. In the meantime the backup surface of the VISM will be used.
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*
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* The countdown is needed because otherwise we may never break out
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* of "do { vi.validate()..} while(vi.lost)" loop since validate() could
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* restore the source surface every time and it will get lost again on the
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* next copy attempt, and we would never get a chance to use the backup
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* surface. By using the countdown we allow the backup surface to be used
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* while the screen surface gets sorted out, or if it for some reason can
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* never be restored.
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*
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* If the destination surface's peer could never do accelerated onscreen
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* rendering then the acceleration for the SurfaceManager associated with
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* the source surface is disabled forever.
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*/
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static void handleVItoScreenOp(SurfaceData src, SurfaceData dst) {
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if (src instanceof D3DSurfaceData &&
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dst instanceof GDIWindowSurfaceData)
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{
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D3DSurfaceData d3dsd = (D3DSurfaceData)src;
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SurfaceManager mgr =
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SurfaceManager.getManager((Image)d3dsd.getDestination());
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if (mgr instanceof D3DVolatileSurfaceManager) {
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D3DVolatileSurfaceManager vsm = (D3DVolatileSurfaceManager)mgr;
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if (vsm != null) {
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d3dsd.setSurfaceLost(true);
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GDIWindowSurfaceData wsd = (GDIWindowSurfaceData)dst;
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WComponentPeer p = wsd.getPeer();
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if (D3DScreenUpdateManager.canUseD3DOnScreen(p,
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(Win32GraphicsConfig)p.getGraphicsConfiguration(),
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p.getBackBuffersNum()))
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{
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// 10 is only chosen to be greater than the number of
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// times a sane person would call validate() inside
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// a validation loop, and to reduce thrashing between
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// accelerated and backup surfaces
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vsm.setRestoreCountdown(10);
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} else {
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vsm.setAccelerationEnabled(false);
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}
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}
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}
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}
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}
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@Override
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public void initContents() {
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if (vImg.getForcedAccelSurfaceType() != TEXTURE) {
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super.initContents();
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}
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}
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}
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