Re: [gl4java-usergroup] moving to jogl

[Kenneth B. R. <kbr...@al...>]

> Jogl question..
> 
> Anyone having troubles getting the demos to work with ATI Radeon 9700?  I
> can get the gears to load and run super fast... but after resizing the
> screen, it crashes
> 
> An unexpected exception has been detected in native code outside the VM.
> Unexpected Signal : EXCEPTION_ACCESS_VIOLATION occurred at PC=0x78ABA316
> Function=[Unknown.]
> Library=(N/A)

We haven't yet stress-tested Jogl with any non-NVidia cards yet
but it's at the top of my to-do list. Possibly we're doing
something wrong in the context management code, or possibly ATI's
drivers are more fragile in some way than NVidia's. Did you get a
Java-level stack trace out of the error report? When you say
"resizing the screen", do you mean resizing the window?

> And I couldn't get the VertexArrayRange to run at all (OpenGL routine
> "glVertexArrayRangeNV" not available)
> 
> Is this because I received the DLL file from Pepijn and didn't compile it
> myself?

No, it's because the VertexArrayRange demo uses an
NVidia-specific extension. As Pepijn pointed out in another
email, we should port this demo to the vertex_array_object
extension. However the semantics of the vertex_array_object calls
make them a little tricky to bind into Java correctly which is
why they currently aren't exposed yet in the Jogl binding.

> (and I should probably search for a Jogl mailing list for the questions...
> but I haven't decided if I should move over...)

If people don't want to see answers to these questions on this
mailing list (I was an active developer of GL4Java for over a
year) please let me know privately, otherwise for the time being
I'll continue to answer them.

-Ken