This article is from the SSH - Secure Shell FAQ, by Thomas Koenig Thomas.Koenig@ciw.uni-karlsruhe.de with numerous contributions by others.
It is not likely that this will be implemented. GL uses a totally
different protocol from X, and at least gld would have to be replaced.
OpenGL, when run as an X server extension, should pose no problem.
You may need to set the environment variable GLFORCEDIRECT=no.