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/*
* Copyright 2007-2008 Sun Microsystems, Inc. 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. Sun designates this
* particular file as subject to the "Classpath" exception as provided
* by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
* CA 95054 USA or visit www.sun.com if you need additional information or
* have any questions.
*/
package sun.java2d.d3d;
import sun.java2d.ScreenUpdateManager;
import sun.java2d.pipe.RenderBuffer;
import sun.java2d.pipe.RenderQueue;
import static sun.java2d.pipe.BufferedOpCodes.*;
/**
* D3D-specific implementation of RenderQueue.
*/
public class D3DRenderQueue extends RenderQueue {
private static D3DRenderQueue theInstance;
private static Thread rqThread;
private D3DRenderQueue() {
}
/**
* Returns the single D3DRenderQueue instance. If it has not yet been
* initialized, this method will first construct the single instance
* before returning it.
*/
public static synchronized D3DRenderQueue getInstance() {
if (theInstance == null) {
theInstance = new D3DRenderQueue();
// no need to lock, noone has reference to this instance yet
theInstance.flushAndInvokeNow(new Runnable() {
public void run() {
rqThread = Thread.currentThread();
}
});
}
return theInstance;
}
/**
* Flushes the single D3DRenderQueue instance synchronously. If an
* D3DRenderQueue has not yet been instantiated, this method is a no-op.
* This method is useful in the case of Toolkit.sync(), in which we want
* to flush the D3D pipeline, but only if the D3D pipeline is currently
* enabled. Since this class has few external dependencies, callers need
* not be concerned that calling this method will trigger initialization
* of the D3D pipeline and related classes.
*/
public static void sync() {
if (theInstance != null) {
// need to make sure any/all screen surfaces are presented prior
// to completing the sync operation
D3DScreenUpdateManager mgr =
(D3DScreenUpdateManager)ScreenUpdateManager.getInstance();
mgr.runUpdateNow();
theInstance.lock();
try {
theInstance.ensureCapacity(4);
theInstance.getBuffer().putInt(SYNC);
theInstance.flushNow();
} finally {
theInstance.unlock();
}
}
}
/**
* Attempt to restore the devices if they're in the lost state.
* (used when a full-screen window is activated/deactivated)
*/
public static void restoreDevices() {
D3DRenderQueue rq = getInstance();
rq.lock();
try {
rq.ensureCapacity(4);
rq.getBuffer().putInt(RESTORE_DEVICES);
rq.flushNow();
} finally {
rq.unlock();
}
}
/**
* @return true if current thread is the render queue thread,
* false otherwise
*/
public static boolean isRenderQueueThread() {
return (Thread.currentThread() == rqThread);
}
/**
* Disposes the native memory associated with the given native
* graphics config info pointer on the single queue flushing thread.
*/
public static void disposeGraphicsConfig(long pConfigInfo) {
D3DRenderQueue rq = getInstance();
rq.lock();
try {
RenderBuffer buf = rq.getBuffer();
rq.ensureCapacityAndAlignment(12, 4);
buf.putInt(DISPOSE_CONFIG);
buf.putLong(pConfigInfo);
// this call is expected to complete synchronously, so flush now
rq.flushNow();
} finally {
rq.unlock();
}
}
public void flushNow() {
// assert lock.isHeldByCurrentThread();
flushBuffer(null);
}
public void flushAndInvokeNow(Runnable r) {
// assert lock.isHeldByCurrentThread();
flushBuffer(r);
}
private native void flushBuffer(long buf, int limit, Runnable task);
private void flushBuffer(Runnable task) {
// assert lock.isHeldByCurrentThread();
int limit = buf.position();
if (limit > 0 || task != null) {
// process the queue
flushBuffer(buf.getAddress(), limit, task);
}
// reset the buffer position
buf.clear();
// clear the set of references, since we no longer need them
refSet.clear();
}
}
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