Michael Bayne
2d0897ed4b
buffer approach don't work. git-svn-id: svn+ssh://src.earth.threerings.net/narya/trunk@2535 542714f4-19e9-0310-aa3c-eee0fc999fb1
844 lines
28 KiB
Java
844 lines
28 KiB
Java
//
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// $Id: FrameManager.java,v 1.41 2003/05/02 23:53:55 mdb Exp $
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package com.threerings.media;
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import java.applet.Applet;
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import java.awt.Color;
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import java.awt.Component;
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import java.awt.Dimension;
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import java.awt.Font;
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import java.awt.FontMetrics;
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import java.awt.Graphics2D;
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import java.awt.GraphicsDevice;
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import java.awt.KeyEventDispatcher;
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import java.awt.KeyboardFocusManager;
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import java.awt.Rectangle;
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import java.awt.Window;
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import java.awt.event.ComponentEvent;
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import java.awt.event.ComponentListener;
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import java.awt.event.KeyEvent;
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import java.awt.event.WindowEvent;
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import java.awt.event.WindowListener;
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import java.awt.EventQueue;
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import javax.swing.JComponent;
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import javax.swing.JFrame;
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import javax.swing.JLayeredPane;
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import javax.swing.RepaintManager;
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import javax.swing.event.AncestorEvent;
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import javax.swing.event.AncestorListener;
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import com.samskivert.swing.Label;
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import com.samskivert.util.DebugChords;
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import com.samskivert.util.ObserverList;
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import com.samskivert.util.RunAnywhere;
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import com.samskivert.util.RuntimeAdjust;
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import com.samskivert.util.StringUtil;
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import com.threerings.media.timer.MediaTimer;
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import com.threerings.media.timer.SystemMediaTimer;
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import com.threerings.media.util.TrailingAverage;
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/**
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* Provides a central point from which the computation for each "frame" or
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* tick can be dispatched. This assumed that the application structures
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* its activity around the rendering of each frame, which is a common
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* architecture for games. The animation and sprite support provided by
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* other classes in this package are structured for use in an application
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* that uses a frame manager to tick everything once per frame.
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*
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* <p> The frame manager goes through a simple two part procedure every
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* frame:
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*
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* <ul>
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* <li> Ticking all of the frame participants: in {@link
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* FrameParticipant#tick}, any processing that need be performed during
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* this frame should be performed. Care should be taken not to execute
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* code that will take unduly long, instead such processing should be
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* broken up so that it can be performed in small pieces every frame (or
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* performed on a separate thread with the results safely communicated
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* back to the frame participants for incorporation into the rendering
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* loop).
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*
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* <li> Painting the user interface hierarchy: the top-level component
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* (the frame) is painted (via a call to {@link JFrame#paint}) into a flip
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* buffer (if supported, an off-screen buffer if not). Updates that were
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* computed during the tick should be rendered in this call to paint. The
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* paint call will propagate down to all components in the UI hierarchy,
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* some of which may be {@link FrameParticipant}s and will have prepared
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* themselves for their upcoming painting in the previous call to {@link
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* FrameParticipant#tick}. When the call to paint completes, the flip
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* buffer is flipped and the process starts all over again. </ul>
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*
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* <p> The ticking and rendering takes place on the AWT thread so as to
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* avoid the need for complicated coordination between AWT event handler
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* code and frame code. However, this means that all AWT (and Swing) event
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* handlers <em>must not</em> perform any complicated processing. After
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* each frame, control of the AWT thread is given back to the AWT which
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* processes all pending AWT events before giving the frame manager an
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* opportunity to process the next frame. Thus the convenience of
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* everything running on the AWT thread comes with the price of requiring
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* that AWT event handlers not block or perform any intensive processing.
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* In general, this is a sensible structure for an application anyhow, so
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* this organization tends to be preferable to an organization where the
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* AWT and frame threads are separate and must tread lightly so as not to
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* collide.
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*
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* <p> Note: the way that <code>JScrollPane</code> goes about improving
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* performance when scrolling complicated contents cannot work with active
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* rendering. If you use a <code>JScrollPane</code> in an application that
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* uses the frame manager, you should either use the provided {@link
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* SafeScrollPane} or set your scroll panes' viewports to
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* <code>SIMPLE_SCROLL_MODE</code>.
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*/
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public abstract class FrameManager
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{
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/**
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* Creates a frame manager that will use a {@link SystemMediaTimer} to
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* obtain timing information, which is available on every platform,
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* but returns inaccurate time stamps on many platforms.
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*
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* @see #newInstance(JFrame, MediaTimer)
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*/
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public static FrameManager newInstance (JFrame frame)
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{
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return newInstance(frame, new SystemMediaTimer());
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}
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/**
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* Constructs a frame manager that will do its rendering to the
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* supplied frame. It is likely that the caller will want to have put
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* the frame into full-screen exclusive mode prior to providing it to
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* the frame manager so that the frame manager can take advantage of
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* optimizations available in that mode.
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*
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* @see GraphicsDevice#setFullScreenWindow
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*/
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public static FrameManager newInstance (JFrame frame, MediaTimer timer)
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{
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FrameManager fmgr;
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if (_useFlip.getValue()) {
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Log.info("Creating flip frame manager.");
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fmgr = new FlipFrameManager();
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} else {
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Log.info("Creating back frame manager.");
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fmgr = new BackFrameManager();
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}
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fmgr.init(frame, timer);
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return fmgr;
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}
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/**
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* Initializes this frame manager and prepares it for operation.
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*/
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protected void init (JFrame frame, MediaTimer timer)
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{
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_frame = frame;
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if (frame instanceof ManagedJFrame) {
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((ManagedJFrame)_frame).init(this);
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}
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_timer = timer;
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// set up our custom repaint manager
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_remgr = new FrameRepaintManager(_frame);
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RepaintManager.setCurrentManager(_remgr);
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// turn off double buffering for the whole business because we
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// handle repaints
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_remgr.setDoubleBufferingEnabled(false);
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if (DEBUG_EVENTS) {
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addTestListeners();
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}
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}
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/**
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* Adds a variety of listeners to the frame in order to provide
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* visibility into the various events received by the frame.
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*/
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protected void addTestListeners ()
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{
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// add a test window listener
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_frame.addWindowListener(new WindowListener() {
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public void windowActivated (WindowEvent e) {
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Log.info("Window activated [evt=" + e + "].");
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}
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public void windowClosed (WindowEvent e) {
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Log.info("Window closed [evt=" + e + "].");
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}
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public void windowClosing (WindowEvent e) {
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Log.info("Window closing [evt=" + e + "].");
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}
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public void windowDeactivated (WindowEvent e) {
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Log.info("Window deactivated [evt=" + e + "].");
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}
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public void windowDeiconified (WindowEvent e) {
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Log.info("Window deiconified [evt=" + e + "].");
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}
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public void windowIconified (WindowEvent e) {
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Log.info("Window iconified [evt=" + e + "].");
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}
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public void windowOpened (WindowEvent e) {
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Log.info("Window opened [evt=" + e + "].");
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}
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});
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// add a component listener
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_frame.addComponentListener(new ComponentListener() {
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public void componentHidden (ComponentEvent e) {
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Log.info("Window component hidden [evt=" + e + "].");
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}
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public void componentShown (ComponentEvent e) {
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Log.info("Window component shown [evt=" + e + "].");
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}
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public void componentMoved (ComponentEvent e) {
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Log.info("Window component moved [evt=" + e + "].");
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}
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public void componentResized (ComponentEvent e) {
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Log.info("Window component resized [evt=" + e + "].");
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}
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});
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// add test ancestor focus listener
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_frame.getRootPane().addAncestorListener(
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new AncestorListener() {
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public void ancestorAdded (AncestorEvent e) {
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Log.info("Root pane ancestor added [e=" + e + "].");
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}
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public void ancestorRemoved (AncestorEvent e) {
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Log.info("Root pane ancestor removed [e=" + e + "].");
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}
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public void ancestorMoved (AncestorEvent e) {
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Log.info("Root pane ancestor moved [e=" + e + "].");
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}
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});
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// add test key event dispatcher
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KeyboardFocusManager.getCurrentKeyboardFocusManager().
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addKeyEventDispatcher(new KeyEventDispatcher() {
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public boolean dispatchKeyEvent (KeyEvent e) {
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// if ((e.getModifiersEx() & KeyEvent.ALT_DOWN_MASK) != 0 &&
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// e.getKeyCode() == KeyEvent.VK_TAB) {
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// Log.info("Detected alt-tab key event " +
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// "[e=" + e + "].");
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// // attempt to eat the event so that windows
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// // doesn't alt-tab into unhappy land
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// e.consume();
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// return true;
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// }
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return false;
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}
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});
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}
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/**
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* Instructs the frame manager to target the specified number of
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* frames per second. If the computation and rendering for a frame are
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* completed with time to spare, the frame manager will wait until the
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* proper time to begin processing for the next frame. If a frame
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* takes longer than its alotted time, the frame manager will
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* immediately begin processing on the next frame.
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*/
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public void setTargetFrameRate (int fps)
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{
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// compute the number of milliseconds per frame
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_millisPerFrame = 1000/fps;
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}
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/**
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* Registers a frame participant. The participant will be given the
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* opportunity to do processing and rendering on each frame.
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*/
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public void registerFrameParticipant (FrameParticipant participant)
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{
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_participants.add(participant);
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}
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/**
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* Removes a frame participant.
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*/
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public void removeFrameParticipant (FrameParticipant participant)
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{
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_participants.remove(participant);
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}
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/**
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* Returns a millisecond granularity time stamp using the {@link
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* MediaTimer} with which this frame manager was configured.
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* <em>Note:</em> this should only be called from the AWT thread.
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*/
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public long getTimeStamp ()
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{
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return _timer.getElapsedMillis();
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}
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/**
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* Starts up the per-frame tick
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*/
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public void start ()
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{
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if (_ticker == null) {
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_ticker = new Ticker();
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_ticker.start();
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_lastTickStamp = 0;
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}
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}
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/**
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* Stops the per-frame tick.
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*/
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public synchronized void stop ()
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{
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if (_ticker != null) {
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_ticker.cancel();
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_ticker = null;
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}
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}
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/**
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* Returns true if the tick interval is be running (not necessarily at
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* that instant, but in general).
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*/
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public synchronized boolean isRunning ()
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{
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return (_ticker != null);
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}
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/**
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* Returns the number of ticks executed in the last second.
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*/
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public int getPerfTicks ()
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{
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return Math.round(_fps[1]);
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}
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/**
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* Returns the number of ticks requested in the last second.
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*/
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public int getPerfTries ()
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{
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return Math.round(_fps[0]);
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}
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/**
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* Returns debug performance metrics.
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*/
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public TrailingAverage[] getPerfMetrics ()
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{
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if (_metrics == null) {
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_metrics = new TrailingAverage[] {
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new TrailingAverage(150),
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new TrailingAverage(150),
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new TrailingAverage(150) };
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}
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return _metrics;
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}
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/**
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* Called to perform the frame processing and rendering.
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*/
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protected void tick (long tickStamp)
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{
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long start = 0L, paint = 0L;
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if (MediaPanel._perfDebug.getValue()) {
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start = paint = System.currentTimeMillis();
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}
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// if our frame is not showing (or is impossibly sized), don't try
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// rendering anything
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if (_frame.isShowing() &&
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_frame.getWidth() > 0 && _frame.getHeight() > 0) {
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// tick our participants
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tickParticipants(tickStamp);
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paint = System.currentTimeMillis();
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// repaint our participants and components
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paint(tickStamp);
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}
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if (MediaPanel._perfDebug.getValue()) {
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long end = System.currentTimeMillis();
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getPerfMetrics()[1].record((int)(paint-start));
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getPerfMetrics()[2].record((int)(end-paint));
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}
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}
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/**
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* Called once per frame to invoke {@link FrameParticipant#tick} on
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* all of our frame participants.
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*/
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protected void tickParticipants (long tickStamp)
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{
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long gap = tickStamp - _lastTickStamp;
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if (_lastTickStamp != 0 && gap > (HANG_DEBUG ? HANG_GAP : BIG_GAP)) {
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Log.debug("Long tick delay [delay=" + gap + "ms].");
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}
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_lastTickStamp = tickStamp;
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// validate any invalid components
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try {
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_remgr.validateComponents();
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} catch (Throwable t) {
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Log.warning("Failure validating components.");
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Log.logStackTrace(t);
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}
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// tick all of our frame participants
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_participantTickOp.setTickStamp(tickStamp);
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_participants.apply(_participantTickOp);
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}
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/**
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* Called once per frame to invoke {@link Component#paint} on all of
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* our frame participants' components and all dirty components managed
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* by our {@link FrameRepaintManager}.
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*/
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protected abstract void paint (long tickStamp);
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/**
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* Paints our frame participants and any dirty components via the
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* repaint manager.
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*
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* @return true if anything was painted, false if not.
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*/
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protected boolean paint (Graphics2D gfx)
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{
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// paint our frame participants (which want to be handled
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// specially)
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_participantPaintOp.init(gfx);
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_participants.apply(_participantPaintOp);
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boolean ppart = _participantPaintOp.paintedSomething();
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// repaint any widgets that have declared they need to be
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// repainted since the last tick
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boolean pcomp = _remgr.paintComponents(gfx, this);
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// let the caller know if anybody painted anything
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return (ppart || pcomp);
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}
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/**
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* Called by the {@link ManagedJFrame} when our window was hidden and
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* reexposed.
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*/
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protected abstract void restoreFromBack (Rectangle dirty);
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/**
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* Renders all components in all {@link JLayeredPane} layers that
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* intersect the supplied bounds.
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*/
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protected void renderLayers (Graphics2D g, Component pcomp,
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Rectangle bounds, boolean[] clipped)
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{
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JLayeredPane lpane =
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JLayeredPane.getLayeredPaneAbove(pcomp);
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if (lpane != null) {
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renderLayer(g, bounds, lpane, clipped, JLayeredPane.PALETTE_LAYER);
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renderLayer(g, bounds, lpane, clipped, JLayeredPane.MODAL_LAYER);
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renderLayer(g, bounds, lpane, clipped, JLayeredPane.POPUP_LAYER);
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renderLayer(g, bounds, lpane, clipped, JLayeredPane.DRAG_LAYER);
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}
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}
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/**
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* Renders all components in the specified layer of the supplied
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* layered pane that intersect the supplied bounds.
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*/
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protected void renderLayer (Graphics2D g, Rectangle bounds,
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JLayeredPane pane, boolean[] clipped,
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Integer layer)
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{
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// stop now if there are no components in that layer
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int ccount = pane.getComponentCountInLayer(layer.intValue());
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if (ccount == 0) {
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return;
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}
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// render them up
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Component[] comps = pane.getComponentsInLayer(layer.intValue());
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for (int ii = 0; ii < ccount; ii++) {
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Component comp = comps[ii];
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_lbounds.setBounds(0, 0, comp.getWidth(), comp.getHeight());
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getRoot(comp, _lbounds);
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if (!_lbounds.intersects(bounds)) {
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continue;
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}
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// if the clipping region has not yet been set during this
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// render pass, the time has come to do so
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if (!clipped[0]) {
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g.setClip(bounds);
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clipped[0] = true;
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}
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// translate into the components coordinate system and render
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g.translate(_lbounds.x, _lbounds.y);
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comp.paint(g);
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g.translate(-_lbounds.x, -_lbounds.y);
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}
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}
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// documentation inherited
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public void checkpoint (String name, int ticks)
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{
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Log.info("Frames in last second: " + ticks);
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}
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/**
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* Returns the root component for the supplied component or null if it
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* is not part of a rooted hierarchy or if any parent along the way is
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* found to be hidden or without a peer. Along the way, it adjusts the
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* supplied component-relative rectangle to be relative to the
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* returned root component.
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*/
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public static Component getRoot (Component comp, Rectangle rect)
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{
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for (Component c = comp; c != null; c = c.getParent()) {
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if (!c.isVisible() || !c.isDisplayable()) {
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return null;
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}
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if (c instanceof Window || c instanceof Applet) {
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return c;
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}
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rect.x += c.getX();
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rect.y += c.getY();
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}
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return null;
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}
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/**
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* An observer operation that calls {@link FrameParticipant#tick} with
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* a specified tick stamp for all {@link FrameParticipant} objects in
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* the observer list to which this operation is applied.
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*/
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protected class ParticipantTickOp
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implements ObserverList.ObserverOp
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{
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/**
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* Sets the tick stamp to be applied to the participants.
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*/
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public void setTickStamp (long tickStamp)
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{
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_tickStamp = tickStamp;
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}
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|
|
|
// documentation inherited
|
|
public boolean apply (Object observer)
|
|
{
|
|
try {
|
|
long start = 0L;
|
|
if (HANG_DEBUG) {
|
|
start = System.currentTimeMillis();
|
|
}
|
|
|
|
((FrameParticipant)observer).tick(_tickStamp);
|
|
|
|
if (HANG_DEBUG) {
|
|
long delay = (System.currentTimeMillis() - start);
|
|
if (delay > HANG_GAP) {
|
|
Log.info("Whoa nelly! Ticker took a long time " +
|
|
"[part=" + observer +
|
|
", time=" + delay + "ms].");
|
|
}
|
|
}
|
|
|
|
} catch (Throwable t) {
|
|
Log.warning("Frame participant choked during tick " +
|
|
"[part=" +
|
|
StringUtil.safeToString(observer) + "].");
|
|
Log.logStackTrace(t);
|
|
}
|
|
return true;
|
|
}
|
|
|
|
/** The tick stamp to be applied to each frame participant. */
|
|
protected long _tickStamp;
|
|
}
|
|
|
|
/**
|
|
* An observer operation that paints the components associated with
|
|
* all {@link FrameParticipant} objects in the observer list to which
|
|
* this operation is applied.
|
|
*/
|
|
protected class ParticipantPaintOp
|
|
implements ObserverList.ObserverOp
|
|
{
|
|
/**
|
|
* Sets the graphics context to which the frame participants
|
|
* render themselves.
|
|
*/
|
|
public void init (Graphics2D g)
|
|
{
|
|
_g = g;
|
|
_painted = 0;
|
|
}
|
|
|
|
/**
|
|
* Returns true if we painted at least one component in our last
|
|
* application.
|
|
*/
|
|
public boolean paintedSomething ()
|
|
{
|
|
return (_painted > 0);
|
|
}
|
|
|
|
// documentation inherited
|
|
public boolean apply (Object observer)
|
|
{
|
|
FrameParticipant part = (FrameParticipant)observer;
|
|
Component pcomp = part.getComponent();
|
|
if (pcomp == null || !part.needsPaint()) {
|
|
return true;
|
|
}
|
|
|
|
long start = 0L;
|
|
if (HANG_DEBUG) {
|
|
start = System.currentTimeMillis();
|
|
}
|
|
|
|
// get the bounds of this component
|
|
pcomp.getBounds(_bounds);
|
|
|
|
// the bounds adjustment we're about to call will add in the
|
|
// components initial bounds offsets, so we remove them here
|
|
_bounds.setLocation(0, 0);
|
|
|
|
// convert them into top-level coordinates; also note that if
|
|
// this component does not have a valid or visible root, we
|
|
// don't want to paint it either
|
|
if (getRoot(pcomp, _bounds) == null) {
|
|
return true;
|
|
}
|
|
|
|
try {
|
|
// render this participant; we don't set the clip because
|
|
// frame participants are expected to handle clipping
|
|
// themselves; otherwise we might pointlessly set the clip
|
|
// here, creating a few Rectangle objects in the process,
|
|
// only to have the frame participant immediately set the
|
|
// clip to something more sensible
|
|
_g.translate(_bounds.x, _bounds.y);
|
|
pcomp.paint(_g);
|
|
_g.translate(-_bounds.x, -_bounds.y);
|
|
_painted++;
|
|
|
|
} catch (Throwable t) {
|
|
String ptos = StringUtil.safeToString(part);
|
|
Log.warning("Frame participant choked during paint " +
|
|
"[part=" + ptos + "].");
|
|
Log.logStackTrace(t);
|
|
}
|
|
|
|
// render any components in our layered pane that are not in
|
|
// the default layer
|
|
_clipped[0] = false;
|
|
renderLayers(_g, pcomp, _bounds, _clipped);
|
|
|
|
if (HANG_DEBUG) {
|
|
long delay = (System.currentTimeMillis() - start);
|
|
if (delay > HANG_GAP) {
|
|
Log.warning("Whoa nelly! Painter took a long time " +
|
|
"[part=" + observer +
|
|
", time=" + delay + "ms].");
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
/** The graphics context to which the participants render. */
|
|
protected Graphics2D _g;
|
|
|
|
/** The number of participants that were actually painted. */
|
|
protected int _painted;
|
|
|
|
/** A handy rectangle that we reuse time and again to avoid having
|
|
* to instantiate a new rectangle in the midst of the core
|
|
* rendering loop. */
|
|
protected Rectangle _bounds = new Rectangle();
|
|
}
|
|
|
|
/** Used to effect periodic calls to {@link #tick}. */
|
|
protected class Ticker extends Thread
|
|
{
|
|
public void run ()
|
|
{
|
|
while (_running) {
|
|
long start = 0L;
|
|
if (MediaPanel._perfDebug.getValue()) {
|
|
start = _timer.getElapsedMillis();
|
|
}
|
|
try {
|
|
int sleepGran = _sleepGranularity.getValue();
|
|
if (sleepGran > 0) {
|
|
Thread.sleep(sleepGran);
|
|
} else {
|
|
Thread.yield();
|
|
}
|
|
} catch (InterruptedException ie) {
|
|
Log.warning("Ticker thread interrupted.");
|
|
}
|
|
|
|
long woke = _timer.getElapsedMillis();
|
|
if (start > 0L) {
|
|
getPerfMetrics()[0].record((int)(woke-start));
|
|
}
|
|
if (woke - _lastAttempt >= _millisPerFrame) {
|
|
_lastAttempt = woke;
|
|
if (testAndSet()) {
|
|
EventQueue.invokeLater(_awtTicker);
|
|
}
|
|
// else: drop the frame
|
|
}
|
|
}
|
|
}
|
|
|
|
public void cancel ()
|
|
{
|
|
_running = false;
|
|
}
|
|
|
|
protected final synchronized boolean testAndSet ()
|
|
{
|
|
_tries++;
|
|
if (!_ticking) {
|
|
_ticking = true;
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
protected final synchronized void clearTicking (long elapsed)
|
|
{
|
|
if (++_ticks == 100) {
|
|
long time = (elapsed - _lastTick);
|
|
_fps[0] = _tries * 1000f / time;
|
|
_fps[1] = _ticks * 1000f / time;
|
|
_lastTick = elapsed;
|
|
_ticks = _tries = 0;
|
|
}
|
|
_ticking = false;
|
|
}
|
|
|
|
/** Used to invoke the call to {@link #tick} on the AWT event
|
|
* queue thread. */
|
|
protected Runnable _awtTicker = new Runnable ()
|
|
{
|
|
public void run ()
|
|
{
|
|
long elapsed = _timer.getElapsedMillis();
|
|
try {
|
|
tick(elapsed);
|
|
} finally {
|
|
clearTicking(elapsed);
|
|
}
|
|
}
|
|
};
|
|
|
|
/** Used to stick a fork in our ticker when desired. */
|
|
protected transient boolean _running = true;
|
|
|
|
/** Used to detect when we need to drop frames. */
|
|
protected boolean _ticking;
|
|
|
|
/** The time at which we last attempted to tick. */
|
|
protected long _lastAttempt;
|
|
|
|
/** Used to compute metrics. */
|
|
protected int _tries, _ticks, _time;
|
|
|
|
/** Used to compute metrics. */
|
|
protected long _lastTick;
|
|
};
|
|
|
|
/** The frame into which we do our rendering. */
|
|
protected JFrame _frame;
|
|
|
|
/** Used to obtain timing measurements. */
|
|
protected MediaTimer _timer;
|
|
|
|
/** Our custom repaint manager. */
|
|
protected FrameRepaintManager _remgr;
|
|
|
|
/** The number of milliseconds per frame (14 by default, which gives
|
|
* an fps of ~71). */
|
|
protected long _millisPerFrame = 14;
|
|
|
|
/** Used to track big delays in calls to our tick method. */
|
|
protected long _lastTickStamp;
|
|
|
|
/** The thread that dispatches our frame ticks. */
|
|
protected Ticker _ticker;
|
|
|
|
/** Used to track and report frames per second. */
|
|
protected float[] _fps = new float[2];
|
|
|
|
/** Used to track performance metrics. */
|
|
protected TrailingAverage[] _metrics;
|
|
|
|
/** Used to avoid creating rectangles when rendering layered
|
|
* components. */
|
|
protected Rectangle _lbounds = new Rectangle();
|
|
|
|
/** Used to lazily set the clip when painting popups and other
|
|
* "layered" components. */
|
|
protected boolean[] _clipped = new boolean[1];
|
|
|
|
/** The entites that are ticked each frame. */
|
|
protected ObserverList _participants =
|
|
new ObserverList(ObserverList.FAST_UNSAFE_NOTIFY);
|
|
|
|
/** The observer operation applied to all frame participants each tick. */
|
|
protected ParticipantTickOp _participantTickOp = new ParticipantTickOp();
|
|
|
|
/** The observer operation applied to all frame participants each time
|
|
* the frame is rendered. */
|
|
protected ParticipantPaintOp _participantPaintOp = new ParticipantPaintOp();
|
|
|
|
/** If we don't get ticked for 500ms, that's worth complaining about. */
|
|
protected static final long BIG_GAP = 500L;
|
|
|
|
/** If we don't get ticked for 100ms and we're hang debugging,
|
|
* complain. */
|
|
protected static final long HANG_GAP = 100L;
|
|
|
|
/** Enable this to log warnings when ticking or painting takes too
|
|
* long. */
|
|
protected static final boolean HANG_DEBUG = false;
|
|
|
|
/** A debug hook that toggles debug rendering of sprite paths. */
|
|
protected static RuntimeAdjust.BooleanAdjust _useFlip =
|
|
new RuntimeAdjust.BooleanAdjust(
|
|
"When active a flip-buffer will be used to manage our " +
|
|
"rendering, otherwise a volatile back buffer is used " +
|
|
"[requires restart]", "narya.media.frame",
|
|
// back buffer rendering doesn't work on the Mac, so we
|
|
// default to flip buffer on that platform; we still allow it
|
|
// to be toggled so that we can easily test things when they
|
|
// release new JVMs
|
|
MediaPrefs.config, RunAnywhere.isMacOS());
|
|
|
|
/** Allows us to tweak the sleep granularity. */
|
|
protected static RuntimeAdjust.IntAdjust _sleepGranularity =
|
|
new RuntimeAdjust.IntAdjust(
|
|
"The number of milliseconds slept before checking to see if " +
|
|
"it's time to queue up a new frame tick.", "narya.media.sleep_gran",
|
|
MediaPrefs.config, 7);
|
|
|
|
/** Whether to enable AWT event debugging for the frame. */
|
|
protected static final boolean DEBUG_EVENTS = false;
|
|
}
|