[FIXED] Mac OS Java Update 2 ( 1.6.0_20) breaks LWJGL applets

[ShawnKendall]

Hi all,

Just FYI, as the subject reads, Mac OS Java Update 2 ( 1.6.0_20) breaks JLWGL applets, (at least yours at: http://lwjgl.org/applet/, only one I know of but I came across this issue with JOGL and we were looking to perhaps switch over to LWJGL and I see it here now too)

To be more specific;

Open applet page with default Java security settings:

In Safari
     you get "Error. Click for details" in the applet and this in the Java console:
java.lang.SecurityException: attempted to open sandboxed jar http://lwjgl.org/applet/lwjgl_util_applet.jar as a Trusted-Library
   at com.sun.deploy.security.CPCallbackHandler$ParentElement.checkResource(CPCallbackHandler.java:354)

In Chrome
    you just get the same error
In FireFox, it runs (ignores security settings? not sure how it could)

If the Java Pref. security settings are disabled (labeled "insecure" in the UI :-():

In Safari and Chrome:
    You get no errors in console and even run-time output (frame rate, etc) but NO render, just blank white page.
In FireFox:
    Again it seems to run fine

This is a bit of FYI, but also I'm following this closely as this is a very serious issue for us, as we have commercial products on Java+OGL+Applet stack.

Good luck sorting that out :\

[Matzon]

Strange .. we specifically updated our stuff to work with all the new u20 shit... works on windows using Java Plug-in 1.6.0_20
Any other mac users with same issue?

[spasi]

Yes, here.

[jrhaddad]

Hi,

We also have problems with our applets on Macs since Java update 2 (1.6.0_20). Here are the noticeable problems observed:

Non-modal windows appear behind the browser window.
Double-buffering does no seem to work.
The animated Java logo is now very jerky (used to turn smoothly)

The same application launched with Java Web Start runs perfectly.

The application can be tested here (press ok if a login prompt appears):

Java applet: http://jmap3.k2geospatial.com/montreal_applet/
Java Web Start: http://jmap3.k2geospatial.com/montreal_jws/dockingClient.jnlp

Our applications running in applets use the new plug-in 2 with JNLP files.

I posted on Apple support forums:

http://discussions.apple.com/thread.jspa?threadID=2460856&tstart=0

Although our applications are not games, I thought it would be interesting to post this here because I think we might be experimenting the same problems. You may want to add your voice to mine on Apple forums.


Regards.

Jean-Robert

[kappa]

Its pretty clear what the cause of these problems are, with java plugin2 apple now force offscreen rendering and render using their own coregraphics api. This has the advantage of allowing html content to overlap the applet and better integrate it into the page.

However this has had the effect of pretty much breaking the frame rate on every type of applet (including PulpCore) and has totally broken all types of OpenGL Applets (JOGL & LWJGL).

Only solution atm to these problems is to fallback to the old java plugin1 (not supported by Chrome, which always just uses plugin2) to do this you go to the java control panel and disable out of process java applets.

[jouvieje]

My applets are also broken on Chrome and Firefox since this last java update on mac.

With luck they still works with Safari/Webkit, so I can still develop on mac. But it's not a viable solution to just tell Chrome/Firefox users to start Safari just to view the applet (frankly I don't expect much people to do that).

Did anyone know if there is some news/talks/works around Apple, Chrome or Firefox related solve this problem ?

[bobjob]

I think this problem has been solved, I currently dont experience any problems on MAC.

test case: http://have2chat.net/fvf

Granted I have only tested in safari and firefox, but i assume it would be the same for chrome

[elias4444]

Chrome on Mac still has troubles displaying LWJGL applets. It appears to load them, but then can't display the GL context. Every other browser on the Mac seems to work fine though, so I'm not sure if it's an LWJGL problem or a Chrome issue. Also, normal Java applets in Chrome show up just fine.

[kappa]

As I understand it plugin2 on mac has broken opengl applets (lwjgl and jogl) as well as crippled performance on all other applet libraries (java2d, pulpcore, etc). This is because they now force all rendering to an offscreen buffer and then draw it through CoreGraphics api, this allows other normal html stuff to now overlap applets and help better integrate it into the page.

To check you have plugin2 enabled you have to make sure 'Run Applets in their own process' is checked in the java control panel. By default firefox and safari use plugin1, this should explain why applets still work there. Chrome on the other hand can't use plugin1 and always (regardless of the control panel setting) uses plugin2, this should explain why it fails on Chrome.

[bobjob]

I downloaded chrome for mac

and as you said java doesnt work.

My applet works regardless of the version selected in firefox and safari.

Something else interesting about google chrome is that you can place a Div over an applet.

I ran the facebook version of my applet and the menu popups covered the applet (non OpenGL applet) fine without error.

[kappa]

@bobjob just curious which version of MacOS X are you using? (10.6 update 2?)

[bobjob]

sorry I just noticed, that safari doesnt work with OpenGL if you run the applet in its own process. Im using my sisters laptop, Im not used to mac

edit: I downloaded the latest firefox for mac, still seems to run the old java plugin regardless of what is setting is on in the "java prefrences".

Is there a way to detect if plugin 2 is running? Then I could at least copy the color buffer to a raster and paint it in a canvas.

[jouvieje]

test case: http://have2chat.net/fvf

Works only on safari for me. I have Mac OS 10.6.4, and applets are broken since las java update (shipped in 10.6.3 if my memory is good).

I have the lastest firefox 4 beta 6, it don't starts the applets at all. It just stays at the java logo and nothing appends then.
I'll try to reinstall it. Which version of firefox are working for you ?

On chrome, nothing is rendered. My applets just seem to runs fine in background (like elias said) but nothing is rendered on the page.

EDIT: I've just re-installed firefox from scrash (firefox 4 beta 6), and applets now starts and runs in background but like Chrome nothing is rendered onscreen.

EDIT: I've filled a bug for Chrome http://code.google.com/p/chromium/issues/detail?id=56008

[bobjob]

I have been fiddling with this problem.
Made a semi fix:
have2chata.net/fvf/

Fixes needed:
* Mouse setGrabbed doesnt work.
* Will be applied to all mac applets (I still dont know how to detect ONLY plugin2)
* Need to run it in its own Thread so that graphics in the Mac applet, are not at all related to the normal applet performance.
* Should probably apply a version check as well, as Im assuming that a later java update with plugin2 will support OpenGL.

[bobjob]

Current Version:

package ...;

import java.awt.Canvas;
import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.Point;
import java.awt.Rectangle;
import java.awt.image.BufferStrategy;
import java.awt.image.BufferedImage;
import java.awt.image.ComponentSampleModel;
import java.awt.image.DataBuffer;
import java.awt.image.DataBufferByte;
import java.awt.image.SampleModel;
import java.awt.image.WritableRaster;
import java.nio.ByteBuffer;

import org.lwjgl.BufferUtils;
import org.lwjgl.opengl.Display;
import org.lwjgl.opengl.GL11;

/** Canvas that will take up the whole frame*/
public class ResizableCanvas extends Canvas implements Runnable {

	private boolean resize = true, macFix;
	private BufferStrategy buffer;
	public BufferedImage b;
	//int texture;
	private ByteBuffer data;
	
	private SampleModel sm;
	private long lastResize;
	private int gameWidth, gameHeight;
	
	private ByteBuffer runData;
	private SampleModel runSM;
	
	private Thread drawThread;
	public ResizableCanvas() {
		super();
		
		if (System.getProperty("os.name").toLowerCase().startsWith("mac")) {
			String prop = System.getProperty("java.rmi.server.RMIClassLoaderSpi");
			if (prop != null && prop.contains("plugin2")) {
				//SHOULD ALSO DO A VERSION CHECK ONCE VIABLE OPENGL VERSION IS RELEASED
				macFix = true;
			}
 
		}
	}
	public void init() {
		validate();
    	requestFocusInWindow();
    	if (macFix) {
    		createBufferStrategy(2);
    	    buffer = getBufferStrategy();
    	    setIgnoreRepaint(true);	
    	}
	    
	    fixSize();
	}

	public boolean requireMacFix() {
		return macFix;
	}
	public boolean checkResize() {
		if (resize && lastResize + 500 < System.currentTimeMillis()) {
			if (!macFix) validate();
			fixSize();	
			resize = false;
			try {
				Display.setParent(this);
			} catch (Exception e) {
				e.printStackTrace();
			}
			return true;
		}
		
		return false;
	}
	private void fixSize() {
		gameWidth = getWidth();
		gameHeight = getHeight();
		if (gameWidth <= 0) gameWidth = 16;
		if (gameHeight <= 0) gameHeight = 16;
		
		if (gameWidth % 4 != 0) gameWidth += 4 - (gameWidth % 4);
		if (gameHeight % 4 != 0) gameHeight += 4 - (gameHeight % 4);
		
		if (macFix) {
			data = BufferUtils.createByteBuffer(gameWidth*gameHeight*3);
			b = new BufferedImage(gameWidth, gameHeight, BufferedImage.TYPE_3BYTE_BGR);

			sm = new ComponentSampleModel(DataBuffer.TYPE_BYTE, gameWidth, gameHeight, 3, gameWidth*3, new int[]{0,1,2});
			lastResize = System.currentTimeMillis();	
		}
		
	}
	public void run() {
		try {
	    	byte bytes[] = new byte[runData.capacity()];
	    	runData.get(bytes);
	    	runData.position(0);
	    	DataBuffer d = new DataBufferByte(bytes, bytes.length);
	    	
	    	
	    	b.setData(WritableRaster.createWritableRaster(runSM, d, new Point(0,0)));
	
			Graphics g2 = buffer.getDrawGraphics();
			  
			g2.drawImage(b, 0,b.getHeight()-1, b.getWidth(), -b.getHeight(), null);
	
			if (g2 != null) g2.dispose();
			if (!buffer.contentsLost()) buffer.show();
		} catch (Exception e) { e.printStackTrace();}
		drawThread = null;
	}
	public void doMacFix() {
		
		if (macFix) {
			if (gameWidth > 16 && gameHeight > 16) {
				if (drawThread == null) {
					try {
						GL11.glReadPixels(0, 0, gameWidth, gameHeight, GL11.GL_RGB, GL11.GL_UNSIGNED_BYTE, data);
						runData = data;
						runSM = sm;
						drawThread = new Thread(this);
						validate();
						drawThread.start();
					} catch (Exception e) { e.printStackTrace(); }
				}
			}
		}
	}
	public void destroy() {
		if (macFix) {
			Thread t = drawThread;
			if (t != null) {
				while (t.isAlive()) {
					try {
						Thread.sleep(1);
					} catch (Exception e) {}
				}
			}
		}
	}
	public void setSize(Dimension size) {  super.setSize(size); resize = true;}
	public void setSize(int x, int y) {	super.setSize(x, y); resize = true;	}
	public void reshape(int x, int y, int width, int height) { super.reshape(x, y, width, height); resize = true; }
	public void setBounds(int x, int y, int width, int height) { super.setBounds(x, y, width, height); resize = true; }
	public void setBounds(Rectangle r) { super.setBounds(r); resize = true; }
	public void resize(Dimension size) { super.resize(size); resize = true; }
	public void resize(int x, int y) { super.resize(x, y);	resize = true; }
}