diff --git a/example/darkroom/two_spheres.hpp b/example/darkroom/two_spheres.hpp
index 94011580..7a370ff2 100644
--- a/example/darkroom/two_spheres.hpp
+++ b/example/darkroom/two_spheres.hpp
@@ -18,7 +18,7 @@ namespace darkcult {
 	//
 	SPROUT_STATIC_CONSTEXPR auto object = sprout::make_tuple(
 		objects::make_aa_plane(
-			sprout::darkroom::objects::aa_plane_direction::y,
+			objects::aa_plane_direction::y,
 			-2.0,
 			materials::make_plaid_material_image(
 				colors::rgb_f(1.0, 0.0, 0.0),
diff --git a/testspr/test.sh b/testspr/test.sh
index 3488d6a6..db9b89c5 100755
--- a/testspr/test.sh
+++ b/testspr/test.sh
@@ -20,7 +20,7 @@ version_specific_options=(
 compile() {
 	echo ": $1-$2 compile..."
 	/usr/local/$1-$2/bin/${1/%cc}++ -Wall -pedantic -std=c++11 -o ${stagedir}/test_$1${2//.} $4 $3
-	let "succ_$1${2//.} = $?"
+	let "succ_$1${2//.}=$?"
 }
 
 execute() {
@@ -36,15 +36,15 @@ execute() {
 	fi
 }
 
-args=`getopt -o d:D:f -l stagedir:,gcc-version:,clang-version:,define:,force -- "$@"`
+args=`getopt -o S:D:f -l stagedir:,gcc-version:,clang-version:,define:,force -- "$@"`
 if [ "$?" -ne 0 ]; then
-	echo >&2 -e ": \e[31musage: $0 [-d|--stagedir=path] [--gcc-version=versions] [--clang-version=versions] [-D|--define=identifier]* [-f|-force]\e[m"
+	echo >&2 -e ": \e[31musage: $0 [-S|--stagedir=path] [--gcc-version=versions] [--clang-version=versions] [-D|--define=identifier]* [-f|-force]\e[m"
 	exit 1
 fi
 eval set -- ${args}
 while [ -n "$1" ]; do
 	case $1 in
-		-d|--stagedir) stagedir=$2; shift 2;;
+		-S|--stagedir) stagedir=$2; shift 2;;
 		--gcc-version) gcc_version="$2"; shift 2;;
 		--clang-version) clang_version="$2"; shift 2;;
 		-D|--define) user_macros=(${user_macros[@]} "$2"); shift 2;;
@@ -54,7 +54,7 @@ while [ -n "$1" ]; do
 	esac
 done
 echo ": settings"
-echo ":   stagedir = ${stagedir}"
+echo ":   stagedir = \"${stagedir}\""
 echo ":   gcc-version = (${gcc_version})"
 echo ":   clang-version = (${clang_version})"
 echo ":   user-macros = (${user_macros[*]})"
@@ -62,7 +62,7 @@ echo ":   force = ${force}"
 
 if [ -d "${stagedir}" ]; then
 	if [ ${force} -eq 0 ]; then
-		echo >&2 -e ": \e[31mstagedir(${stagedir}) is already exist.\e[m"
+		echo >&2 -e ": \e[31mstagedir(${stagedir}) already exists.\e[m"
 		exit 1
 	else
 		rm -f -r ${stagedir}/*
diff --git a/tools/darkroom/darkcult.sh b/tools/darkroom/darkcult.sh
index 41809be3..2b05dbff 100755
--- a/tools/darkroom/darkcult.sh
+++ b/tools/darkroom/darkcult.sh
@@ -17,16 +17,16 @@ tile_width=16
 tile_height=16
 force=0
 
-args=`getopt -o s:d:w:h:W:H:f -l source:,stagedir:,width:,height:,tile-width:,tile-height:,force -- "$@"`
+args=`getopt -o s:S:w:h:W:H:f -l source:,stagedir:,width:,height:,tile-width:,tile-height:,force -- "$@"`
 if [ "$?" -ne 0 ]; then
-	echo >&2 -e ": \e[31musage: $0 -s|--source=file [-d|--stagedir=path] [-w|--width=value] [-h|--height=value] [-W|--tile-width=value] [-H|--tile-height=value] [-f|-force]\e[m"
+	echo >&2 -e ": \e[31musage: $0 [-s|--source=file] [-S|--stagedir=path] [-w|--width=value] [-h|--height=value] [-W|--tile-width=value] [-H|--tile-height=value] [-f|-force]\e[m"
 	exit 1
 fi
 eval set -- ${args}
 while [ -n "$1" ]; do
 	case $1 in
 		-s|--source) src=$2; shift 2;;
-		-d|--stagedir) stagedir=$2; shift 2;;
+		-S|--stagedir) stagedir=$2; shift 2;;
 		-w|--width) width=$2; shift 2;;
 		-h|--height) height=$2; shift 2;;
 		-W|--tile-width) tile_width=$2; shift 2;;
@@ -38,8 +38,8 @@ while [ -n "$1" ]; do
 done
 
 echo ": settings"
-echo ":   source = ${src}"
-echo ":   stagedir = ${stagedir}"
+echo ":   source = \"${src}\""
+echo ":   stagedir = \"${stagedir}\""
 echo ":   width = ${width}"
 echo ":   height = ${height}"
 echo ":   tile-width = ${tile_width}"
@@ -47,13 +47,13 @@ echo ":   tile-height = ${tile_height}"
 echo ":   force = ${force}"
 
 if [ ! -f "${src}" -a ! -f "$(cd $(dirname $0); pwd)/${src}" ]; then
-	echo >&2 -e ": \e[31msource(${src}) is not exist.\e[m"
+	echo >&2 -e ": \e[31msource(${src}) not exists.\e[m"
 	exit 1
 fi
 
 if [ -d "${stagedir}" ]; then
 	if [ ${force} -eq 0 ]; then
-		echo >&2 -e ": \e[31mstagedir(${stagedir}) is already exist.\e[m"
+		echo >&2 -e ": \e[31mstagedir(${stagedir}) already exists.\e[m"
 		exit 1
 	else
 		rm -f -r ${stagedir}/*
@@ -62,15 +62,16 @@ else
 	mkdir -p ${stagedir}
 fi
 
-echo ": rendering..."
-start=$SECONDS
+echo ": start."
+start=${SECONDS}
 
 for ((y=0; y<height; y+=tile_height)); do
-	y_start=$SECONDS
+	echo ": rendering(${y}/${height})..."
+	y_start=${SECONDS}
 
 	for ((x=0; x<width; x+=tile_width)); do
 		mkdir -p ${stagedir}/${y}/
-		binname=${stagedir}/${x}.${y}.out
+		binname=${stagedir}/${y}/${x}.out
 		g++ -o ${binname} -std=c++11 \
 			-DDARKROOM_SOURCE="\"${src}\"" \
 			-DDARKROOM_TOTAL_WIDTH=${width} \
@@ -81,19 +82,18 @@ for ((y=0; y<height; y+=tile_height)); do
 			-DDARKROOM_OFFSET_Y=${y} \
 			$(cd $(dirname $0); pwd)/darkcult.cpp && ${binname} > ${stagedir}/${y}/${x}.ppm
 #		rm ${binname}
-	done;
-	pushd ${stagedir}/${y}/
+	done
+	pushd ${stagedir}/${y}/ > /dev/null
 	convert +append $(ls *.ppm | sort -n) ../${y}.ppm
-	popd
+	popd > /dev/null
 
-	let y_elapsed=$SECONDS-$y_start
-	echo ":   elapsed(${y}) = ${y_elapsed}s"
-done;
-pushd ${stagedir}
+	let "y_elapsed=${SECONDS}-${y_start}"
+	echo ":   elapsed = ${y_elapsed}s"
+done
+pushd ${stagedir} > /dev/null
 convert -append $(ls *.ppm | sort -n) out.ppm
-popd
-
-let elapsed=$SECONDS-$start
-echo ": elapsed = ${elapsed}s"
+popd > /dev/null
 
+let "elapsed=${SECONDS}-${start}"
+echo ": elapsed(total) = ${elapsed}s"
 echo ": finished."