code: def SHRender(xyz_sampled, viewdirs, features):
      sh_mult = eval_sh_bases(2, viewdirs)[:, None]
      rgb_sh = features.view(-1, 3, sh_mult.shape[-1])
      rgb = torch.relu(torch.sum(sh_mult * rgb_sh, dim=-1) + 0.5)
      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 3 for calling a global function with example usage: SHRender(xyz_sampled, viewdirs, features) and returns: rgb