Be smart about thumbnailing and uploading benches

bench.sh

@@ -4,14 +4,17 @@ set -e
 set +x
 
 for FILE in img/bench/webp-src/*.jpg; do
-	OUT="${FILE%.*}.webp"
-	OUT2X="${FILE%.*}@2x.webp"
-	if [ ! -f ../$OUT ]; then
-		cwebp -mt -resize 160 0 -q 40 $FILE -o $OUT
+	FULLNAME=$(basename -- ${FILE})
+	NAME=${FULLNAME%.*}
+	OUT="img/bench/${NAME}.webp"
+	OUT2X="img/bench/${NAME}@2x.webp"
+	echo "Checking for \"${OUT}\"..."
+	if [ ! -f "${OUT}" ]; then
+		echo "Would thumbnail ${OUT}"
+		cwebp -mt -resize 160 0 -q 40 ${FILE} -o ${OUT}
 	fi
-	if [ ! -f ../$OUT2X ]; then
-		cwebp -mt -q 40 $FILE -o $OUT2X
+	if [ ! -f "${OUT2X}" ]; then
+		echo "Would thumbnail@2x ${OUT2X}"
+		cwebp -mt -q 40 ${FILE} -o ${OUT2X}
 	fi
 done
-
-mv img/bench/webp-src/*.webp img/bench/