warp.volume\_index\_to\_world\_dir
==================================

.. function:: warp._src.lang.volume_index_to_world_dir(id: uint64, uvw: vec3f) -> vec3f

   .. hlist::
      :columns: 8

      * Kernel
      * Python
      * Differentiable

   Transform a direction ``uvw`` defined in volume index space to world space given the volume's intrinsic affine transformation.