Re: [gl4java-usergroup] Destroying and Creating canvases in a single window ? ? ?

[Tobias L. G. <tg...@ul...>]

Florent,

You will have to compile the version that is in the
sourceforge cvs.  After you check out, read the
file called COMPILATION.txt.  The instructions
are fairly straightforward, and you should be able
to get it built in fairly short order.  If you have
any questions, just post to the list.  Probably
until I get this bug fixed I will be available to
help you out with any build problems.  If I'm not
monitoring the list, there seem to be a number
of other people on the list who would be able to
help you.  Compiling is better because you can
try to fix any bugs you encounter . . . just my
opinion.

Anyway, happy building . . . and stay up . . .


                           Peace, Love and Hair Grease

                                           -TOBY

Florent Geffroy wrote:

>Hi !
>
>I'm using the version which is stored on
>jausoft.com....
>Is the CVS version compiled ? Because I'll need a
>compiler if it's not...
>
>Thanks you very much, anyway !
>
>Florent Geffroy
>
> --- "Tobias L. George" <tg...@ul...> a
>écrit : > Florent,
>  
>
>>I should have mentioned that you HAVE
>>to use the version of GL4Java that is on
>>SourceForge CVS.  Are you using this
>>version ? ? ?
>>
>>If not you should go to this CVS and
>>do a check out and build GL4Java
>>from the sources.  Then calling
>>cvsDispose() BEFORE removing the
>>GLCanvas will work for you.
>>
>>                  Peace, Love and Hair Grease,
>>
>>                                      -TOBY
>>
>>Florent Geffroy wrote:
>>
>>    
>>
>>>Oops, I sent my reply to Tobias directly, my
>>>      
>>>
>>mistake,
>>    
>>
>>>so here is the mail :
>>>
>>>Hi !
>>>
>>>Actually, the "glgDestroy Failed" occured when I
>>>called cvsDispose ! I tried everything, but nothing
>>>seemed to work...
>>>As I'm using the GLEventListener way, I thought
>>>      
>>>
>>this
>>    
>>
>>>is the reason, maybe a bug when removing the
>>>      
>>>
>>listener.
>>    
>>
>>>But as I tried the subclassing way, I saw that it
>>>      
>>>
>>was
>>    
>>
>>>the same... 
>>>Even if everything is properly closed (canvas
>>>      
>>>
>>stopped,
>>    
>>
>>>listener removed, etc.), it occurs when I call
>>>cvsDispose... So, what happens ?
>>>
>>>And a little question : is the developpment of
>>>      
>>>
>>GL4Java
>>    
>>
>>>stopped ? Or is Sven Goettel still working on it,
>>>      
>>>
>>and
>>    
>>
>>>making a JFC/Swing implementations which works,
>>>because I don't like to mix Swing (JFrame) and AWT
>>>(GLCanvas and not GLJpanel) things together.
>>>
>>>Florent GEFFROY
>>>
>>>--- "Tobias L. George" <tg...@ul...> a
>>>écrit : > Florent,
>>> 
>>>
>>>      
>>>
>>>>M'excuse, mais ma frances c'est plus mal que ton
>>>>anglais . . .
>>>>donc . . . I will be responding in english.  I
>>>>        
>>>>
>>think
>>    
>>
>>>>that what
>>>>you may need to do to get rid of your problem is
>>>>        
>>>>
>>to
>>    
>>
>>>>make
>>>>certain that you are calling cvsDispose() on the
>>>>GLCanvas
>>>>you are trying to get rid of PRIOR to the canvas
>>>>being
>>>>removed from the window, or its containing
>>>>component.
>>>>
>>>>After this, you will not have the "gljDestroy
>>>>        
>>>>
>>failed
>>    
>>
>>>>. . ."
>>>>message anymore, but I think your app will still
>>>>slow down
>>>>after a while.  I am still working on finding this
>>>>problem.
>>>>
>>>>                                        Peace,
>>>>        
>>>>
>>Love
>>    
>>
>>>>and Hair Grease,
>>>>
>>>>                                                 
>>>>        
>>>>
>>>>-TOBY
>>>>
>>>>Florent Geffroy wrote:
>>>>
>>>>   
>>>>
>>>>        
>>>>
>>>>>I have exactly the same problem ! When trying to
>>>>>destroy a Canvas, it tells me something like
>>>>>"gljDestroy failed"... 
>>>>>Actually, glj designate the GLContext, but I
>>>>>     
>>>>>
>>>>>          
>>>>>
>>>>founded
>>>>   
>>>>
>>>>        
>>>>
>>>>>that it is properly closed, so I can't explain
>>>>>          
>>>>>
>>why
>>    
>>
>>>>>this error occurs...
>>>>>
>>>>>Florent GEFFROY
>>>>>
>>>>>--- "Tobias L. George" <tg...@ul...>
>>>>>          
>>>>>
>>a
>>    
>>
>>>>>écrit : > Hello all,
>>>>>
>>>>>
>>>>>     
>>>>>
>>>>>          
>>>>>
>>>>>>I am wondering whether or not anyone else is
>>>>>>       
>>>>>>
>>>>>>            
>>>>>>
>>>>having
>>>>   
>>>>
>>>>        
>>>>
>>>>>>trouble
>>>>>>destroying and creating GLCanvases in a single
>>>>>>window.  I
>>>>>>have tried with both the binary release from
>>>>>>Jausoft, and the
>>>>>>CVS release that was on sourceforge as of March
>>>>>>       
>>>>>>
>>>>>>            
>>>>>>
>>>>22,
>>>>   
>>>>
>>>>        
>>>>
>>>>>>2003.
>>>>>>
>>>>>>I think that something is not being properly
>>>>>>disposed of when
>>>>>>a GLCanvas is destroyed.  I am able to create
>>>>>>            
>>>>>>
>>and
>>    
>>
>>>>>>destroy
>>>>>>a few GLCanvases but after a while the
>>>>>>            
>>>>>>
>>GLCanvases
>>    
>>
>>>>>>that are
>>>>>>created slow to a crawl when drawing.
>>>>>>
>>>>>>Try as I might, I have only been able
>>>>>>to find a single bug in GL4Java.  It is in the
>>>>>>GLCanvas code,
>>>>>>during the first paint, the canvas adds itself
>>>>>>            
>>>>>>
>>to
>>    
>>
>>>>>>the top level
>>>>>>window as a listener.  The problem is, that it
>>>>>>       
>>>>>>
>>>>>>            
>>>>>>
>>>>never
>>>>   
>>>>
>>>>        
>>>>
>>>>>>removed
>>>>>>itself as a listener and so it would never get
>>>>>>finalized.  This
>>>>>>is not even a bug if you look at it from the
>>>>>>            
>>>>>>
>>point
>>    
>>
>>>>>>of view of
>>>>>>always needing to destroy the top-level window
>>>>>>            
>>>>>>
>>in
>>    
>>
>>>>>>order to
>>>>>>destroy a GLCanvas, although in practice you end
>>>>>>       
>>>>>>
>>>>>>            
>>>>>>
>>>>up
>>>>   
>>>>
>>>>        
>>>>
>>>>>>having
>>>>>>to exit the program.  Be that as it may, I am at
>>>>>>            
>>>>>>
>>a
>>    
>>
>>>>>>loss for the
>>>>>>moment as to why this slow down is happening
>>>>>>            
>>>>>>
>>when
>>    
>>
>>>>>>       
>>>>>>
>>>>>>            
>>>>>>
>>>>I
>>>>   
>>>>
>>>>        
>>>>
>>>>>>create
>>>>>>and destroy more than a few GLCanvases.  I am
>>>>>>looking
>>>>>>through the GL4Java code again now, and I will
>>>>>>       
>>>>>>
>>>>>>            
>>>>>>
>>>>find
>>>>   
>>>>
>>>>        
>>>>
>>>>>>out why
>>>>>>sooner or later by the grace of VisualC, but if
>>>>>>someone has a
>>>>>>clue, could you help a brotha out ? ? ?
>>>>>>
>>>>>>
>>>>>>                    Peace, Love, and Hair
>>>>>>       
>>>>>>
>>>>>>            
>>>>>>
>>>>Grease,
>>>>   
>>>>
>>>>        
>>>>
>>>>>>                                      -TOBY
>>>>>>
>>>>>>            
>>>>>>
>=== message truncated === 
>
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