misc/autoshader.sh

   1 #!/bin/sh
   2
   3 if ! [ -d "textures" ] && ! [ -d "env" ]; then
   4         echo "Sorry, must be run from a directory with a textures subfolder. Giving up."
   5         exit 1
   6 fi
   7
   8 makeshader()
   9 {
  10         s=`texnormalize "$1"`
  11         dir=${s#textures/}
  12         dir=${dir%%/*}
  13         echo scripts/$dir.shader
  14         mkdir -p scripts
  15         cat <<EOF >>"scripts/$dir.shader"
  16 $s
  17 {
  18         qer_editorimage $1
  19         qer_trans 0.5
  20         // maybe: surfaceparm nonsolid
  21         surfaceparm trans
  22         surfaceparm alphashadow
  23         surfaceparm nomarks
  24         cull disable
  25         {
  26                 map $s
  27                 blendfunc blend
  28                 // or: alphafunc GE128
  29         }
  30         {
  31                 map $lightmap
  32                 blendfunc filter
  33                 rgbGen identity
  34         }
  35 }
  36 EOF
  37 }
  38
  39 makeskyshader()
  40 {
  41         s=`texnormalize "$1"`
  42         s=${s%_up}
  43         s=${s#env/}
  44         dir=${s%%/*}
  45         echo >&2 "appending to scripts/$dir.shader"
  46         echo scripts/$dir.shader
  47         mkdir -p scripts
  48         cat <<EOF >>"scripts/$dir.shader"
  49 textures/$s
  50 {
  51         qer_editorimage $1
  52         surfaceparm noimpact
  53         surfaceparm nolightmap
  54         surfaceparm sky
  55         surfaceparm nomarks
  56         q3map_sunExt .5 .5 .7 42 90 2 16 // red green blue intensity degrees elevation deviance samples
  57         q3map_surfacelight 150 // intensity
  58         skyparms env/$s - -
  59 }
  60 EOF
  61 }
  62
  63 texnormalize()
  64 {
  65         echo "$1" | sed 's/\.[Jj][Pp][Gg]$\|\.[Tt][Gg][Aa]$\|\.[Pp][Nn][Gg]$//;'
  66 }
  67
  68 allshadernames() # prints all shader names or texture names
  69 {
  70         cat scripts/*.shader 2>/dev/null | tr '\r' '\n' | {
  71                 mode=root
  72                 while IFS= read -r LINE; do
  73                         LINE=`echo "$LINE" | sed 's,//.*,,; s/\s\+/ /g; s/^ //; s/ $//; s/"//g;'`
  74                         [ -n "$LINE" ] || continue
  75                         set -- $LINE
  76                         case "$mode:$1" in
  77                                 root:'{')
  78                                         mode=shader
  79                                         ;;
  80                                 root:*)
  81                                         texnormalize "$1"
  82                                         ;;
  83
  84                                 shader:'{')
  85                                         mode=stage
  86                                         ;;
  87                                 shader:'}')
  88                                         mode=root
  89                                         ;;
  90                                 shader:skyparms)
  91                                         echo "`texnormalize "$1"`_up"
  92                                         ;;
  93
  94                                 stage:'}')
  95                                         mode=shader
  96                                         ;;
  97                                 stage:map)
  98                                         texnormalize "$2"
  99                                         ;;
 100                                 stage:clampmap)
 101                                         texnormalize "$2"
 102                                         ;;
 103                                 stage:animmap)
 104                                         shift
 105                                         shift
 106                                         for X in "$@"; do
 107                                                 texnormalize "$X"
 108                                         done
 109                                         ;;
 110                         esac
 111                 done
 112         }
 113 }
 114
 115 allshaders=`allshadernames`
 116 lf="
 117 "
 118
 119 has_shader()
 120 {
 121         sh=`texnormalize "$1"`
 122         case "$lf$allshaders$lf" in
 123                 *"$lf$sh$lf"*)
 124                         return 0
 125                         ;;
 126         esac
 127         return 1
 128 }
 129
 130 has_alpha()
 131 {
 132         convert "$1" -depth 8 RGBA:- | xxd -c 4 -g 1 | grep -v " ff  " >/dev/null
 133 }
 134
 135 autoshaders()
 136 {
 137         {
 138                 [ -d "textures" ] && find textures -type f \( -iname \*.tga -o -iname \*.png \) -print | while IFS= read -r TEX; do
 139                         case `texnormalize "$TEX"` in
 140                                 *_norm|*_shirt|*_pants|*_glow|*_gloss|*_bump)
 141                                         # ignore these (they are used implicitly)
 142                                         continue
 143                                         ;;
 144                         esac
 145                         if has_shader "$TEX"; then
 146                                 echo>&2 "    $TEX has an associated shader, ignoring."
 147                         else
 148                                 if has_alpha "$TEX"; then
 149                                         echo>&2 "*** $TEX has alpha but no shader, creating default alpha shader."
 150                                         makeshader "$TEX"
 151                                 else
 152                                         echo>&2 "    $TEX has no shader and no alpha, fine."
 153                                 fi
 154                         fi
 155                 done
 156                 [ -d "env" ] && find env -type f \( -iname \*_up.tga -o -iname \*_up.png -o -iname \*_up.jpg \) -print | while IFS= read -r TEX; do
 157                         if has_shader "$TEX"; then
 158                                 echo>&2 "    $TEX has an associated shader, ignoring."
 159                         else
 160                                 echo>&2 "*** $TEX is sky but has no shader, creating default sky shader."
 161                                 makeskyshader "$TEX"
 162                         fi
 163                 done
 164         } | sort -u
 165 }
 166
 167 aashaders=`autoshaders`
 168
 169 if [ -n "$aashaders" ]; then
 170         cat <<EOF
 171 The following shader files have been automatically created or appended to:
 172
 173 $aashaders
 174
 175 Please edit them to your needs, and possibly rename them.
 176 EOF
 177 fi