text: """
  2D Rectangle
  ------------
  """
  import bpy
  import gpu
  from gpu_extras.batch import batch_for_shader
  
  vertices = (
      (100, 100), (300, 100),
      (100, 200), (300, 200))
  
  indices = (
      (0, 1, 2), (2, 1, 3))
  
  shader = gpu.shader.from_builtin('2D_UNIFORM_COLOR')
  batch = batch_for_shader(shader, 'TRIS', {"pos": vertices}, indices=indices)
  
  
  def draw():
      shader.bind()
      shader.uniform_float("color", (0, 0.5, 0.5, 1.0))
      batch.draw(shader)
  
  
  bpy.types.SpaceView3D.draw_handler_add(draw, (), 'WINDOW', 'POST_PIXEL')
  