warp.volume\_sample\_f
======================

.. function:: warp._src.lang.volume_sample_f(id: uint64, uvw: vec3f, sampling_mode: int32) -> float

   .. hlist::
      :columns: 8

      * Kernel
      * Python
      * Differentiable

   Sample the :class:`warp.float32` volume given by ``id`` at the index-space point ``uvw``.
   
   ``uvw`` is in index space (voxel coordinates) and may be fractional; ``sampling_mode`` must be
   :attr:`warp.Volume.CLOSEST` or :attr:`warp.Volume.LINEAR`. Sampling uses the resolved volume
   value (see :func:`~warp.volume_sample`). ``id`` must identify a ``float32`` volume. In kernels,
   ``volume_sample_f()`` is equivalent to :func:`~warp.volume_sample` with ``dtype=float``, which
   documents the coordinate-frame, value-resolution, boundary, and differentiability behavior.
   
   :returns: The sampled :class:`warp.float32` value.
   
   See :func:`~warp.volume_sample` for a usage example.