code: def test_render_two_squares(self):
      # Check that drawing twice doesn't overwrite the initial buffer.
      context = EGLContext(width=MAX_EGL_WIDTH, height=MAX_EGL_HEIGHT)
      with context.active_and_locked():
          red_square = _draw_square(r=1.0, g=0.0, b=0.0)
          blue_square = _draw_square(r=0.0, g=0.0, b=1.0)
  
      start_px = int(MAX_EGL_WIDTH / 4)
      end_px = int(MAX_EGL_WIDTH * 3 / 4)
  
      self.assertTrue(
          torch.all(
              red_square[start_px:end_px, start_px:end_px]
              == torch.tensor([255, 0, 0])
          )
      )
      self.assertTrue(
          torch.all(
              blue_square[start_px:end_px, start_px:end_px]
              == torch.tensor([0, 0, 255])
          )
      )
  
imports: import ctypes
  import os
  import sys
  import threading
  import unittest
  import torch
  import pycuda._driver
  from OpenGL import GL
  from OpenGL.raw.EGL._errors import EGLError
  from pytorch3d.renderer.opengl import _can_import_egl_and_pycuda
  from pytorch3d.renderer.opengl.opengl_utils import _define_egl_extension, _egl_convert_to_int_array, _get_cuda_device, egl, EGLContext, global_device_context_store
  from .common_testing import TestCaseMixin
label_desc: Use image node_id 2 for calling the TestOpenGLSingleThreaded obj's underlying member method code with example usage: obj.test_render_two_squares() without return types