code: def setUp(self):
      super().setUp()
      # This pattern was chosen instead of a parametrized test to faclitate
      # running the test cases in pure CPU mode on machines that do not have a
      # GPU. In this case the opengl rasterizer cannot be added as dependency to
      # the binary as CPU only machines do not have the required libEGL.so
      # available. This pattern provides a separate build target for the opengl
      # rasterizer version.
      self._backend = rasterization_backend.RasterizationBackends.OPENGL
  
imports: from tensorflow_graphics.rendering import rasterization_backend
  from tensorflow_graphics.rendering.tests import splat_test
  from tensorflow_graphics.util import test_case
label_desc: Use image node_id 1 for calling the SplatWithOpenGLTest obj's underlying member method code with example usage: obj.setUp() without return types