ENH: Update minimize dtype for int64 & int8 support

[snowman2]

geocube/geocube/rasterize.py

Lines 39 to 52 in e32d163

	def _minimize_dtype(dtype: numpy.dtype, fill: float) -> numpy.dtype:
	"""
	If int64, convert to float64:
	https://github.com/OSGeo/gdal/issues/3325
	Attempt to convert to float32 if fill is NaN and dtype is integer.
	"""
	if numpy.issubdtype(dtype, numpy.integer):
	if dtype.name == "int8":
	# GDAL/rasterio doesn't support int8
	dtype = numpy.dtype("int16")
	if dtype.name == "int64":
	# GDAL/rasterio doesn't support int64
	dtype = numpy.dtype("float64")

Related:

• Snowman2 int64 rasterio/rasterio#2467
• Int64 and GDAL methods (dtypes.dtype_rev) rasterio/rasterio#2072
• ENH: Add int8 to rasterize (GDAL 3.7+) rasterio/rasterio#2756