Posted by Sven Gothel on Nov 27, 2023; 10:24am
URL: https://forum.jogamp.org/how-to-use-GLContext-getCurrentGL-tp4043168p4043169.html

Short answer: No.

Long answer, see <https://jogamp.org/jogl/doc/userguide/#joglapi>.

Strategy is to store the GLContext/GLDrawable (low level)
or the higher level GLAutoDrawable (combined GLContext)
at your code level where you construct your resources (surface/window, etc).

Then, if using the higher level API, you implement GLEventListener
and add them to your GLAutoDrawable.

The GLEventListener methods are then called by the GLAutoDrawable,
passing the GL instance to you, which reference the current GLContext.
(edited).

The GLAutoDrawable takes care of making the context current and all that.

Browse through our unit tests and demos to get familiar with it perhaps.

+++

On the low level side w/o GLAutoDrawable, you have to create and make your GLContext
current and of course need to somehow manage it.

GLContext.getCurrent() returns the Thread-Local-Storage (TLS) GLContext. instance
managed internally and therefor is not really a big burden - even though
using the GLAutoDrawable + GLEventListener model is easier and more clear.

GLContext.getCurrentGL() uses GLContext.getCurrent() and returns its GL reference.

+++

Also see <https://jogamp.org/wiki/index.php?title=Why_Instance_Design>
about instance design of our API, i.e. passing the GL object.