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  GLJPanel resizing stack trace problem with current version of JOGL  (Read 2175 times)
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Offline digat

Junior Newbie





« Posted 2010-09-27 21:57:11 »

Does anyone have a fix for resizing the GLJPanel?  A GLException occurs when the PBuffer needs to be resized.

This can be reproduced by running the JGears from jogamp.org source code samples.

Exception in thread "AWT-EventQueue-0" javax.media.opengl.GLException: GLEventListener Gears@ed42d08 already initialized
: AWT-GLJPanel[ com.jogamp.opengl.impl.GLPbufferImpl, GLEventListeners num 1 [Gears@ed42d08[init true], ]]
        at com.jogamp.opengl.impl.GLDrawableHelper.init(GLDrawableHelper.java:125)
        at javax.media.opengl.awt.GLJPanel$Updater.init(GLJPanel.java:582)
        at com.jogamp.opengl.impl.GLDrawableHelper.init(GLDrawableHelper.java:111)
        at com.jogamp.opengl.impl.GLDrawableHelper.init(GLDrawableHelper.java:124)
        at com.jogamp.opengl.impl.GLPbufferImpl$InitAction.run(GLPbufferImpl.java:303)
        at com.jogamp.opengl.impl.GLDrawableHelper.invokeGL(GLDrawableHelper.java:273)
        at com.jogamp.opengl.impl.GLPbufferImpl.maybeDoSingleThreadedWorkaround(GLPbufferImpl.java:296)
        at com.jogamp.opengl.impl.GLPbufferImpl.display(GLPbufferImpl.java:120)
        at javax.media.opengl.awt.GLJPanel$PbufferBackend.doPaintComponentImpl(GLJPanel.java:1143)
        at javax.media.opengl.awt.GLJPanel$AbstractReadbackBackend.doPaintComponent(GLJPanel.java:914)
        at javax.media.opengl.awt.GLJPanel.paintComponent(GLJPanel.java:306)
        at JGears.paintComponent(JGears.java:58)
        at javax.swing.JComponent.paint(JComponent.java:1027)
        at javax.swing.JComponent.paintChildren(JComponent.java:864)
        ...

The code is using GLCanvas for now, but the GLJPanel is attractive because it gets rid of a disorienting flashing behavior when switching between tabs in a JTabbedPane.
Offline gouessej
« Reply #1 - Posted 2010-09-27 22:28:20 »

Hi

I don't reproduce this bug on machines supporting PBuffers. I'll try again tomorrow.

Offline gouessej
« Reply #2 - Posted 2010-09-28 13:26:23 »

Hi!

I don't reproduce your bug but I have a lot of other problems with GLJPanel now with JOGL 2 Sad

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Offline digat

Junior Newbie





« Reply #3 - Posted 2010-09-28 15:28:36 »

To reproduce this error, the JFrame used in JGears.java was dragged to a size double the original.

Based on your reported results, it seems that using the GLJPanel in code should be avoided until a stable, well tested release is made.
Offline gouessej
« Reply #4 - Posted 2010-09-30 10:57:12 »

Based on your reported results, it seems that using the GLJPanel in code should be avoided until a stable, well tested release is made.
JOGL is well tested but some things are temporarily broken. GLJPanel works in some demos but not in my simple test case.

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