Added logic to copy along the alpha_channel when generating sub-images for fillholes_pushpull (#2939)
Added logic to copy along the alpha_channel when generating sub-images for fillholes_pushpull (#2939)


OpenImageIO/oiio,lgritz/oiio,lgritz/oiio,OpenImageIO/oiio,OpenImageIO/oiio,lgritz/oiio,OpenImageIO/oiio,lgritz/oiio