message: add renderer to sgTutorial.py
diff: @@ -8,7 +8,7 @@ from pysg import Any, vec3f, Data, vec2i
  sg.init(sys.argv)
  # specific rkcommon::math types needed for SG
  -pos = Any(vec3f(0.0, 0.0, 10.0))
  +pos = Any(vec3f(0.1, 0.1, 5.66))
  dir = Any(vec3f(0.0, 0.0, -1.0))
  up = Any(vec3f(0.0, 1.0, 0.0))
  @@ -40,6 +40,7 @@ mat = numpy.array([0], dtype=numpy.uint32)
  frame = sg.Frame()
  frame.createChild("windowSize", "vec2i", window_size)
  +frame.createChild("renderer", "renderer_scivis")
  world = frame.child("world")
  cam = frame.child("camera")
  @@ -63,6 +64,5 @@ world.render()
  # First frame will be "navigation" resolution.
  # Render again for full sized frame.
  frame.startNewFrame()
  -frame.startNewFrame()
  frame.waitOnFrame()
  frame.saveFrame("sgTutorial.png", 0)
  