/*
* Copyright (c) 2009-2012 jMonkeyEngine
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* * Neither the name of 'jMonkeyEngine' nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package com.jme3.system.lwjgl;
import com.jme3.input.JoyInput;
import com.jme3.input.KeyInput;
import com.jme3.input.MouseInput;
import com.jme3.input.TouchInput;
import com.jme3.input.lwjgl.JInputJoyInput;
import com.jme3.input.lwjgl.LwjglKeyInput;
import com.jme3.input.lwjgl.LwjglMouseInput;
import com.jme3.system.AppSettings;
import com.jme3.system.JmeSystem;
import java.util.concurrent.atomic.AtomicBoolean;
import java.util.logging.Level;
import java.util.logging.Logger;
import org.lwjgl.LWJGLException;
import org.lwjgl.Sys;
import org.lwjgl.opengl.Display;
import org.lwjgl.opengl.OpenGLException;
import org.lwjgl.opengl.Util;
public abstract class LwjglAbstractDisplay extends LwjglContext implements Runnable {
private static final Logger logger = Logger.getLogger(LwjglAbstractDisplay.class.getName());
protected AtomicBoolean needClose = new AtomicBoolean(false);
protected boolean wasActive = false;
protected int frameRate = 0;
protected boolean autoFlush = true;
protected boolean allowSwapBuffers = false;
/**
* @return Type.Display or Type.Canvas
*/
public abstract Type getType();
/**
* Set the title if its a windowed display
* @param title
*/
public abstract void setTitle(String title);
/**
* Restart if its a windowed or full-screen display.
*/
public abstract void restart();
/**
* Apply the settings, changing resolution, etc.
* @param settings
*/
protected abstract void createContext(AppSettings settings) throws LWJGLException;
/**
* Destroy the context.
*/
protected abstract void destroyContext();
/**
* Does LWJGL display initialization in the OpenGL thread
*/
protected boolean initInThread(){
try {
if (!JmeSystem.isLowPermissions()){
// Enable uncaught exception handler only for current thread
Thread.currentThread().setUncaughtExceptionHandler(new Thread.UncaughtExceptionHandler() {
public void uncaughtException(Thread thread, Throwable thrown) {
listener.handleError("Uncaught exception thrown in "+thread.toString(), thrown);
if (needClose.get()){
// listener.handleError() has requested the
// context to close. Satisfy request.
deinitInThread();
}
}
});
}
// For canvas, this will create a pbuffer,
// allowing us to query information.
// When the canvas context becomes available, it will
// be replaced seamlessly.
createContext(settings);
printContextInitInfo();
created.set(true);
super.internalCreate();
} catch (Exception ex){
try {
if (Display.isCreated())
Display.destroy();
} catch (Exception ex2){
logger.log(Level.WARNING, null, ex2);
}
listener.handleError("Failed to create display", ex);
return false; // if we failed to create display, do not continue
}
listener.initialize();
return true;
}
protected boolean checkGLError(){
try {
Util.checkGLError();
} catch (OpenGLException ex){
listener.handleError("An OpenGL error has occured!", ex);
}
// NOTE: Always return true since this is used in an "assert" statement
return true;
}
/**
* execute one iteration of the render loop in the OpenGL thread
*/
protected void runLoop(){
if (!created.get())
throw new IllegalStateException();
listener.update();
// All this does is call swap buffers
// If the canvas is not active, there's no need to waste time
// doing that ..
if (renderable.get()){
assert checkGLError();
// calls swap buffers, etc.
try {
if (allowSwapBuffers && autoFlush) {
Display.update(false);
}
} catch (Throwable ex){
listener.handleError("Error while swapping buffers", ex);
}
}
int frameRateCap;
if (autoFlush) {
frameRateCap = frameRate;
} else {
frameRateCap = 20;
}
if (frameRateCap > 0) {
// Cap framerate
Display.sync(frameRateCap);
}
// check input after we synchronize with framerate.
// this reduces input lag.
if (renderable.get()){
Display.processMessages();
}
// Subclasses just call GLObjectManager clean up objects here
// it is safe .. for now.
renderer.postFrame();
}
/**
* De-initialize in the OpenGL thread.
*/
protected void deinitInThread(){
destroyContext();
listener.destroy();
logger.fine("Display destroyed.");
super.internalDestroy();
}
public void run(){
if (listener == null) {
throw new IllegalStateException("SystemListener is not set on context!"
+ "Must set with JmeContext.setSystemListner().");
}
loadNatives();
logger.log(Level.FINE, "Using LWJGL {0}", Sys.getVersion());
if (!initInThread()) {
logger.log(Level.SEVERE, "Display initialization failed. Cannot continue.");
return;
}
while (true){
if (renderable.get()){
if (Display.isCloseRequested())
listener.requestClose(false);
if (wasActive != Display.isActive()) {
if (!wasActive) {
listener.gainFocus();
timer.reset();
wasActive = true;
} else {
listener.loseFocus();
wasActive = false;
}
}
}
runLoop();
if (needClose.get())
break;
}
deinitInThread();
}
public JoyInput getJoyInput() {
if (joyInput == null){
joyInput = new JInputJoyInput();
}
return joyInput;
}
public MouseInput getMouseInput() {
if (mouseInput == null){
mouseInput = new LwjglMouseInput(this);
}
return mouseInput;
}
public KeyInput getKeyInput() {
if (keyInput == null){
keyInput = new LwjglKeyInput(this);
}
return keyInput;
}
public TouchInput getTouchInput() {
return null;
}
public void setAutoFlushFrames(boolean enabled){
this.autoFlush = enabled;
}
public void destroy(boolean waitFor){
needClose.set(true);
if (waitFor)
waitFor(false);
}
}