From e8e2870177cefb5e8fa0cc9d89943a6702146cbb Mon Sep 17 00:00:00 2001
From: Rudolf Polzer <divverent@xonotic.org>
Date: Thu, 1 Sep 2011 20:47:23 +0200
Subject: [PATCH] shader audit: support auditing heights/normalmaps
---
scripts/shader-audit.sh | 92 ++++++++++++++++++++++++++++++++++++++++-
1 file changed, 91 insertions(+), 1 deletion(-)
diff --git a/scripts/shader-audit.sh b/scripts/shader-audit.sh
index ab8de907..3f0fb83b 100755
--- a/scripts/shader-audit.sh
+++ b/scripts/shader-audit.sh
@@ -25,6 +25,41 @@ normalize()
allowed_prefixes=
forbidden_prefixes=
+getstats_e()
+{
+ identify -verbose -alpha extract -depth 8 "$1" | {
+ pix=0
+ while read -r L V R; do
+ case "$L" in
+ Geometry:)
+ V=${V%%[-+]*}
+ pix=$(( (${V%%x*} * ${V#*x}) / 2 ))
+ ;;
+ min:)
+ min=$V
+ ;;
+ max:)
+ max=$V
+ ;;
+ [0-9]*:)
+ pix=$(( $pix - ${L%:} ))
+ if [ $pix -le 0 ]; then
+ median=`echo "$V $R" | cut -d , -f 1 | tr -cd 0-9`
+ break
+ fi
+ esac
+ done
+ cat >/dev/null
+ echo "min=$min"
+ echo "max=$max"
+ echo "median=$median"
+ }
+}
+getstats()
+{
+ eval `getstats_e "$1"`
+}
+
textures_used=
# $1 = shader
# $2 = texture
@@ -46,6 +81,40 @@ use_texture()
fi
textures_used="$textures_used$LF$2"
+ if [ x"$3" = x"map" ]; then
+ lasttex=$2
+ if [ -n "$AUDIT_OFFSETMAPPING" ]; then
+ if [ -f "../${2}_norm.tga" ]; then
+ case "$offsetmapping_match8" in
+ '') # no dpoffsetmapping keyword
+ getstats "../${2}_norm.tga"
+ if [ "$min" -eq "$max" ]; then
+ echo "(EE) shader $1 uses broken normalmap ${2}_norm.tga (add dpoffsetmapping none)"; seterror
+ else
+ echo "(EE) shader $1 uses ${2}_norm.tga but lacks median (add dpoffsetmapping with: match8 $median)"; seterror
+ fi
+ ;;
+ none) # offsetmapping turned off explicitly
+ ;;
+ default) # offsetmapping keyword without bias
+ getstats "../${2}_norm.tga"
+ if [ "$min" -eq "$max" ]; then
+ echo "(EE) shader $1 uses broken normalmap ${2}_norm.tga, maybe use dpoffsetmapping none?"; seterror
+ else
+ echo "(EE) shader $1 uses ${2}_norm.tga but lacks median (add to dpoffsetmapping: match8 $median)"; seterror
+ fi
+ ;;
+ *) # offsetmapping keyword with bias
+ ;;
+ esac
+ else
+ if [ -n "$offsetmapping_match8" ]; then
+ echo "(EE) shader $1 specifies offsetmapping, but texture $2 does not have a normalmap"
+ fi
+ fi
+ fi
+ fi
+
if [ -n "$allowed_prefixes" ]; then
ok=false
for p in $allowed_prefixes; do
@@ -197,7 +266,7 @@ parse_shaderstage()
{
while read L A1 Aother; do
case "`echo "$L" | tr A-Z a-z`" in
- map)
+ map|clampmap)
case "$A1" in
'$lightmap')
;;
@@ -226,8 +295,29 @@ parse_shaderstage()
parse_shader()
{
use_texture "$parsing_shader" "$parsing_shader" shader
+ offsetmapping_match8=
while read L A1 Aother; do
case "`echo "$L" | tr A-Z a-z`" in
+ dpoffsetmapping)
+ set -- $Aother
+ if [ x"$A1" = x"none" ]; then
+ offsetmapping_match8=none
+ elif [ x"$A1" = x"off" ]; then
+ offsetmapping_match8=none
+ elif [ x"$A1" = x"disabled" ]; then
+ offsetmapping_match8=none
+ elif [ x"$2" = x"match8" ]; then
+ offsetmapping_match8=`echo "($3 + 0.5) / 1" | bc`
+ elif [ x"$2" = x"match16" ]; then
+ offsetmapping_match8=`echo "($3 / 257 + 0.5) / 1" | bc`
+ elif [ x"$2" = x"match" ]; then
+ offsetmapping_match8=`echo "($3 * 255 + 0.5) / 1" | bc`
+ elif [ x"$2" = x"bias" ]; then
+ offsetmapping_match8=`echo "((1 - $3) * 255 + 0.5) / 1" | bc`
+ else
+ offsetmapping_match8=default
+ fi
+ ;;
qer_editorimage)
use_texture "$parsing_shader" "`normalize "$A1"`" editorimage
;;
--
2.39.5