Add texture bumpmapping feature.

1 files changed, 255 insertions, 0 deletions

diff --git a/util/generate-texture-normals.sh b/util/generate-texture-normals.sh
new file mode 100755
index 000000000..6279dfa69
--- /dev/null
+++ b/util/generate-texture-normals.sh
@@ -0,0 +1,255 @@
+#!/bin/bash
+
+# This script generates normalmaps using The GIMP to do the heavy lifting.
+# give any unrecognized switch (say, -h) for usage info.
+
+rm /tmp/normals_filelist.txt
+
+numprocs=6
+
+skiptools=false
+skipinventory=false
+invresolution=64
+dryrun=false
+pattern="*.png *.jpg"
+
+filter=0
+scale=8
+wrap=0
+heightsource=0
+conversion=0
+invertx=0
+inverty=0
+
+while test -n "$1"; do
+	case "$1" in
+		--scale|-s)
+			if [ -z "$2" ] ; then echo "Missing scale parameter"; exit 1; fi
+			scale=$2
+			shift
+			shift
+			;;
+		--pattern|-p)
+			if [ -z "$2" ] ; then echo "Missing pattern parameter"; exit 1; fi
+			pattern=$2
+			shift
+			shift
+			;;
+		--skiptools|-t)
+			skiptools=true
+			shift
+			;;
+		--skipinventory|-i)
+			if [[ $2 =~ ^[0-9]+$ ]]; then
+				invresolution=$2
+				shift
+			fi
+			skipinventory=true
+			shift
+			;;
+		--filter|-f)
+			if [ -z "$2" ] ; then echo "Missing filter parameter"; exit 1; fi
+
+			case "$2" in
+				sobel3|1)
+					filter=1
+					;;
+				sobel5|2)
+					filter=2
+					;;
+				prewitt3|3)
+					filter=3
+					;;
+				prewitt5|4)
+					filter=4
+					;;
+				3x3|5)
+					filter=5
+					;;
+				5x5|6)
+					filter=6
+					;;
+				7x7|7)
+					filter=7
+					;;
+				9x9|8)
+					filter=8
+					;;
+				*)
+					filter=0
+					;;
+			esac
+
+			shift
+			shift
+			;;
+		--heightalpha|-a)
+			heightsource=1
+			shift
+			;;
+		--conversion|-c)
+				if [ -z "$2" ] ; then echo "Missing conversion parameter"; exit 1; fi
+
+				case "$2" in
+					biased|1)
+						conversion=1
+						;;
+					red|2)
+						conversion=2
+						;;
+					green|3)
+						conversion=3
+						;;
+					blue|4)
+						conversion=4
+						;;
+					maxrgb|5)
+						conversion=5
+						;;
+					minrgb|6)
+						conversion=6
+						;;
+					colorspace|7)
+						conversion=7
+						;;
+					normalize-only|8)
+						conversion=8
+						;;
+					heightmap|9)
+						conversion=9
+						;;
+					*)
+						conversion=0
+						;;
+			esac
+
+			shift
+			shift
+			;;
+		--wrap|-w)
+			wrap=1
+			shift
+			;;
+		--invertx|-x)
+			invertx=1
+			shift
+			;;
+		--inverty|-y)
+			inverty=1
+			shift
+			;;
+		--dryrun|-d)
+			dryrun=true
+			shift
+			;;
+		*)
+			echo -e "\nUsage:\n"
+			echo "`basename $0` [--scale|-s <value>] [--filter|-f <string>]"
+			echo " [--wrap|-w] [--heightalpha|-a] [--invertx|-x] [--inverty|-y]"
+			echo " [--conversion|-c <string>] [--skiptools|-t] [--skipinventory|-i [<value>]]"
+			echo " [--dryrun|-d] [--pattern|-p <pattern>]"
+			echo -e "\nDefaults to a scale of 8, checking all files in the current directory, and not"
+			echo "skipping apparent tools or inventory images.  Filter, if specified, may be one"
+			echo "of: sobel3, sobel5, prewitt3, prewitt5, 3x3, 5x5, 7x7, or 9x9, or a value 1"
+			echo "through 8 (1=sobel3, 2=sobel5, etc.). Defaults to 0 (four-sample).  The height"
+			echo "source is taken from the image's alpha channel if heightalpha is specified.\n"
+			echo ""
+			echo "If inventory skip is specified, an optional resolution may also be included"
+			echo "(default is 64).  Conversion can be one of: biased, red, green, blue, maxrgb,"
+			echo "minrgb, colorspace, normalize-only, heightmap or a value from 1 to 9"
+			echo "corresponding respectively to those keywords.  Defaults to 0 (simple"
+			echo "normalize) if not specified.  Wrap, if specified, enables wrapping of the"
+			echo "normalmap around the edges of the texture (defaults to no).  Invert X/Y"
+			echo "reverses the calculated gradients  for the X and/or Y dimensions represented"
+			echo "by the normalmap (both default to non-inverted)."
+			echo ""
+			echo "The pattern, can be an escaped pattern string such as \*apple\* or"
+			echo "default_\*.png or similar (defaults to all PNG and JPG images in the current"
+			echo "directory that do not contain \"_normal\" or \"_specular\" in their filenames)."
+			echo ""
+			echo "If set for dry-run, the actions this script will take will be printed, but no"
+			echo "images will be generated.  Passing an invalid value to a switch will generally"
+			echo "cause that switch to revert to its default value."
+			echo ""
+			exit 1
+			;;
+	esac
+done
+
+echo -e "\nProcessing files based on pattern \"$pattern\" ..."
+
+normalMap()
+{
+	out=`echo "$1" | sed 's/.png/_normal.png/' | sed 's/.jpg/_normal.png/'`
+
+	echo "Launched process to generate normalmap: \"$1\" --> \"$out\"" >&2
+
+	gimp -i -b "
+		(define
+			(normalMap-fbx-conversion fileName newFileName filter nscale wrap heightsource conversion invertx inverty)
+			(let*
+				(
+					(image (car (gimp-file-load RUN-NONINTERACTIVE fileName fileName)))
+					(drawable (car (gimp-image-get-active-layer image)))
+					(drawable (car (gimp-image-flatten image)))
+				)
+				(if (> (car (gimp-drawable-type drawable)) 1)
+					(gimp-convert-rgb image) ()
+				)
+
+				(plug-in-normalmap 
+					RUN-NONINTERACTIVE
+					image
+					drawable
+					filter
+					0.0
+					nscale
+					wrap
+					heightsource
+					0
+					conversion
+					0
+					invertx
+					inverty
+					0
+					0.0
+					drawable)
+				(gimp-file-save RUN-NONINTERACTIVE image drawable newFileName newFileName)
+				(gimp-image-delete image)
+			)
+		)
+		(normalMap-fbx-conversion \"$1\" \"$out\" $2 $3 $4 $5 $6 $7 $8)" -b '(gimp-quit 0)'
+}
+
+export -f normalMap
+
+for file in `ls $pattern |grep -v "_normal.png"|grep -v "_specular"` ; do
+
+	invtest=`file "$file" |grep "$invresolution x $invresolution"`
+	if $skipinventory && [ -n "$invtest" ] ; then
+		echo "Skipped presumed "$invresolution"px inventory image: $file" >&2
+		continue
+	fi
+
+	tooltest=`echo "$file" \
+		| grep -v "_tool" \
+		| grep -v "_shovel" \
+		| grep -v "_pick" \
+		| grep -v "_axe" \
+		| grep -v "_sword" \
+		| grep -v "_hoe" \
+		| grep -v "bucket_"`
+
+	if $skiptools && [ -z "$tooltest" ] ; then
+		echo "Skipped presumed tool image: $file" >&2
+		continue
+	fi
+
+	if $dryrun ; then
+		echo "Would have generated a normalmap for $file" >&2
+		continue
+	else
+		echo \"$file\" $filter $scale $wrap $heightsource $conversion $invertx $inverty
+	fi
+done | xargs -P $numprocs -n 8 -I{} bash -c normalMap\ \{\}\ \{\}\ \{\}\ \{\}\ \{\}\ \{\}\ \{\}\ \{\}
+