code: def RGBRender(xyz_sampled, viewdirs, features):
      rgb = features
      return rgb
  
imports: import torch
  import torch.nn
  import torch.nn.functional
  from .sh import eval_sh_bases
  import numpy
  import time
label_desc: Use image node_id 4 for calling a global function with example usage: RGBRender(xyz_sampled, viewdirs, features) and returns: rgb