warp.volume\_sample\_i
======================

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

   .. hlist::
      :columns: 8

      * Kernel
      * Python

   Sample the :class:`warp.int32` volume given by ``id`` at the index-space point ``uvw``.
   
   Integer volumes only support nearest-voxel sampling, so there is no ``sampling_mode`` argument
   (:attr:`warp.Volume.CLOSEST` is always used). This function is not differentiable. ``uvw`` is
   in index space (voxel coordinates) and may be fractional; it is rounded to the nearest voxel.
   Currently, exact halfway cases are rounded away from zero. Sampling uses the resolved volume
   value (see :func:`~warp.volume_sample`). ``id`` must identify an ``int32`` volume.
   
   :returns: The sampled :class:`warp.int32` value.
   
   See :func:`~warp.volume_sample` for a usage example.