Posted by Sven Gothel on Jan 15, 2014; 12:48am
URL: https://forum.jogamp.org/Poor-Performance-with-glVertexAttribPointer-tp4031170p4031224.html

On 01/14/2014 10:50 PM, bgroenks96 [via jogamp] wrote:
>     Sven Gothel wrote
>     Reason is, glBufferData recreates the GPU memory 'slot' !
>
> So that's what causes the memory leak?
>
> When is it appropriate then to make the glBufferData(..., ..., null, ...)
> call?  Isn't it supposed to tell the driver to discard the previously held
> buffer data?

yes, sure - recreate == dispose+create

Haven't said anything about a leak.
But recreation takes more time for memory management
where glBufferSubData simply updates the content.
Thought this discussion was about performance ..

~Sven