Switched to JDK 1.7, GLCanvas buggy on mac

I haven't started a bug report because I'm not entirely sure whether this is a bug in jogl or elsewhere (or how to submit a bug report).

I recently started using some Java 1.7 features in a project that I've been working on in both Windows and OSX. This worked fine in Windows but now GLCanvas is behaving weirdly in OSX. The best way to describe it is that the contents if GLCanvas is resizing randomly. I provided a video of it happening in a stripped down test case:

VIDEO: http://www.youtube.com/watch?v=4cXzDPvsJYA
CODE: https://gist.github.com/3089608

The console output reveals that the canvas is actually maintaining the appropriate size despite the appearance to the contrary.

The error "XXXX-XX-XX XX:XX:XX.XXX java[XXXX:XXX] invalid drawable" is received each time it renders inaccurately.

In my actual application this is happening not just when resizing (I haven't nailed down exactly why it's happening at the particular point it is but it's just after adding more objects to render).

2012-07-11 12:56, Fauldsh [via jogamp] skrev:

I haven't started a bug report because I'm not entirely sure whether this is a bug in jogl or elsewhere (or how to submit a bug report).

I recently started using some Java 1.7 features in a project that I've been working on in both Windows and OSX. This worked fine in Windows but now GLCanvas is behaving weirdly in OSX. The best way to describe it is that the contents if GLCanvas is resizing randomly. I provided a video of it happening in a stripped down test case:

VIDEO: http://www.youtube.com/watch?v=4cXzDPvsJYA
CODE: https://gist.github.com/3089608

The console output reveals that the canvas is actually maintaining the appropriate size despite the appearance to the contrary.

The error "XXXX-XX-XX XX:XX:XX.XXX java[XXXX:XXX] invalid drawable" is received each time it renders inaccurately.

In my actual application this is happening not just when resizing (I haven't nailed down exactly why it's happening at the particular point it is but it's just after adding more objects to render).

Remember that Swing and AWT is a single threaded framework, you must guarantee that Swing and AWT calls runs on the Event Dispatch Thread or strange things will/may happen.
If you want the full background then read the JavaSE swing concurrency tutorial:
http://docs.oracle.com/javase/tutorial/uiswing/concurrency/index.html

For example try use the SwingUtilities.invokeLater to make sure that swing and awt updates happens on the Event Dispatch Thread.

Change

canvas.setPreferredSize(new Dimension(drawable.getWidth(), drawable.getHeight()));

to

SwingUtilities.invokeLater(new Runnable() {
  public void run() {
    canvas.setPreferredSize(new Dimension(drawable.getWidth(), drawable.getHeight()));
  }
});

and change

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NAML

Ok, I made some changes and stripped even more out (https://gist.github.com/3090470). Weirdly if I compile for Java 1.6 and run using the Java SE 6 (MacOS X Default) it works fine. Whilst resizing is still quite jerky in 1.6 there is no random resizing as in 1.7. Not sure what to make of this.

I'm pretty sure Xerxes know a lot about this than I do but...

Would you consider switching from GLCanvas to GLWindow. There is a tutorial about this at Jogamp.org.

Also, I say this because not only you may encounter the problem you describe but I think you will also be unable to set Full Screen on Mac as well.

More over, GLWindow works for android which is the opposite for GLCanvas.

You're right, good advice. Use GLCanvas only if you need some sort of interoperability with AWT. Exclusive full screen mode is broken under GNU Linux with KDE 4 in AWT too. Whatever the canvas you use, take care of the threading.

Thanks for the tip guys, still curious to know what's causing the underlying bug (and why i still get one invalid drawable error) but using newt now and it works.

On 07/11/2012 04:01 PM, Fauldsh [via jogamp] wrote:
> Ok, I made some changes and stripped even more out
> (https://gist.github.com/3090470). Weirdly if I compile for Java 1.6 and run
> using the Java SE 6 (MacOS X Default) it works fine. Whilst resizing is still
> quite jerky in 1.6 there is no random resizing as in 1.7. Not sure what to
> make of this.

This 'jerky' behavior is well known, see bug
  <https://jogamp.org/bugzilla/show_bug.cgi?id=569>
  <https://jogamp.org/bugzilla/show_bug.cgi?id=599>

Today or tomorrow I may finish my 1st draft of the FBO offscreen
drawable, allowing resize w/o recreation of drawable/context.

On OpenJDK 1.7 the AWT related GLDrawable is always offscreen
as with Applets on OSX >= 10.5.8 and Java6 - since it's the only
JAWT hook they provide (CALayer).

~Sven