;;
*.png|*.tga)
cached true has_alpha "$F" "" "$F.hasalpha" ""
+ conv=false
if [ -s "$F.hasalpha" ]; then
cached "$do_dds" reduce_rgba_dds "$F" "" "dds/${F%.*}.dds" "" "$dds_flags"
cached "$do_jpeg" reduce_rgba_jpeg2 "$F" "" "${F%.*}.jpg" "${F%.*}_alpha.jpg" "$jpeg_qual_rgb" "$jpeg_qual_a"