I am trying to draw two views of the same OpenGL scene in one frame. The idea is: draw frame, move camera, draw
frame again, output frame. But the results flicker. It's the same at any speed that the jit.gl.render object is banged.
(See patch below.)
I'm aware that the "correct" way to do this is to have multiple objects, rather than multiple camera views. But
hopefully someone can spot an error in the way I'm trying to accomplish this.