code: def render_mask(
      self,
      face_image,
      mask_image,
      params,
      input_is_rgb=False,
      auto_blend=True,
      positions=[0.1, 0.33, 0.9, 0.7],
  ):
      if isinstance(mask_image, str):
          to_rgb = True if input_is_rgb else False
          mask_image = ins_get_image(mask_image, to_rgb=to_rgb)
      uv_mask_image = self.generate_mask_uv(mask_image, positions)
      h, w, c = face_image.shape
      image_vertices = self.params_to_vertices(params, h, w)
      output = (
          1
          - face3d.mesh.render.render_texture(
              image_vertices,
              self.bfm.full_triangles,
              uv_mask_image,
              self.texcoord,
              self.bfm.full_triangles,
              h,
              w,
          )
      ) * 255
      output = output.astype(np.uint8)
      if auto_blend:
          mask_bd = (output == 255).astype(np.uint8)
          final = face_image * mask_bd + (1 - mask_bd) * output
          return final
      return output
  
imports: import os, sys, datetime
  import numpy
  import os.path
  import albumentations
  from albumentations.core.transforms_interface import ImageOnlyTransform
  from .face_analysis import FaceAnalysis
  from ..utils import get_model_dir
  from ..thirdparty import face3d
  from ..data import get_image
  from ..utils import DEFAULT_MP_NAME
  import cv2
label_desc: Use image node_id 10 for calling the MaskRenderer obj's underlying member method code with example usage: obj.render_mask(face_image, mask_image, params, input_is_rgb, auto_blend, positions) and returns: output, final