the GLScene team is trying to translate it step by step, but right now there is a huge flickering problem generated because a "NOT" redraw order is not being honoured by the form, so the OpenGL viewer redraws the scene and the form redraws the background generating a lot of flickering
to the lazarus team: pleas check this as soon as you can, this would help a lot by adding a really great component (a set of components) to the lazarus project by giving it a great OpenGL interface
thanks