code: def render_kernel(
      self,
      function_name: str,
      kernel: List[str],
      bufs: List[Tuple[str, DType]],
      local_size: List[int],
      prekernel: List[str],
  ) -> str:
      local_size = local_size[::-1] if local_size else [1]
      bind_it = iter(range(len(bufs)))
      prg = "fn nan() -> f32 { let bits = 0xffffffffu; return bitcast<f32>(bits); }\nfn inf(a: f32) -> f32 { return a/0.0; }\n"
      prg += "\n".join(
          prekernel
          + [
              f"@group(0) @binding({next(bind_it)}) {'var<storage,read_write>' if isinstance(dtype, PtrDType) else 'var<uniform>'} {name}: {f'array<{self.type_map[dtype]}>' if isinstance(dtype, PtrDType) else 'i32'};"
              for name, dtype in bufs
          ]
      )  # noqa: E501
      prg += (
          f"\n@compute @workgroup_size({','.join([str(x) for x in local_size])}) fn {function_name}(@builtin(workgroup_id) gindex: vec3<u32>, @builtin(local_invocation_id) lindex: vec3<u32>) {{\n"
          + "\n".join(kernel)
          + "\n}"
      )  # noqa: E501
      return prg
  
file_path: tinygrad/extra/backends/cstyle.py
label_desc: Use image node_id 4 for calling the WGSLLanguage obj's underlying member method code with example usage: obj.render_kernel(function_name, kernel, bufs, local_size, prekernel) and returns: prg