e179fee049
In the next patch, ISL will unconditionally perform verification of a surface's tiling and usage. Since it will require that w-tiled images be stencil buffers, create a stencil surface to copy from a w-tiled/stencil surface. Signed-off-by: Nanley Chery <nanley.g.chery@intel.com> Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>