jit.gl.videoplane needs resetting (delete - undo) from time to time

Hi guys.

I working on this patch and when changing various gl objects or settings this jit.gl.videoplane object stops rendering. When I delete it and undo the delete, it renders again. Is there a way to avoid this.

I've attached the patch, (Sorry about the mess)
And if you see some way of making the patch easier on my laptop, I'm happy to receive advice :) I've more or less just built this bit by bit and not thought it through. In addition, I don't fully grasp the whole openGL thing. I'm just stealing stuff and modifying.

Thanks in advance