make the external dependencies of test.sh optional

diff --git a/test.sh b/test.sh
index effd30d..d5f2e3c 100644 (file)
--- a/test.sh
+++ b/test.sh
@@ -52,9 +52,15 @@ EOF
        echo >&3 "<table>"
        echo >&3 "<tr><th>Picture</th>"
        echo >&3 "<th>Original</th>"
-       echo >&3 "<th>Compressonator</th>"
-       echo >&3 "<th>nvcompress</th>"
-       echo >&3 "<th>libtxc_dxtn</th>"
+       if $use_compressonator; then
+               echo >&3 "<th>Compressonator</th>"
+       fi
+       if $use_nvcompress; then
+               echo >&3 "<th>nvcompress</th>"
+       fi
+       if $use_libtxc_dxtn; then
+               echo >&3 "<th>libtxc_dxtn</th>"
+       fi
        echo >&3 "<th>rand64-sRGB-mixed</th>"
        echo >&3 "<th>rand64-wavg</th>"
        echo >&3 "<th>norand-wavg</th>"
@@ -94,19 +100,41 @@ t()
        echo "$LD_PRELOAD"
 }
 
+if which nvcompress >/dev/null 2>&1; then
+       use_nvcompress=true
+else
+       use_nvcompress=false
+fi
+if which wine >/dev/null 2>&1 && [ -f "$HOME/.wine/drive_c/Program Files (x86)/AMD/The Compressonator 1.50/TheCompressonator.exe" ]; then
+       use_compressonator=true
+else
+       use_compressonator=false
+fi
+if [ -f /usr/lib/libtxc_dxtn.so ]; then
+       use_libtxc_dxtn=true
+else
+       use_libtxc_dxtn=false
+fi
+
 html_start
 for i in dxtfail base_concrete1a disabled floor_tile3a lift02 panel_ceil1a sunset amelia rms noise noise_solid supernova ishihara augenkrebs; do
        html_rowstart "$i"
 
        html "$i".tga
 
-       time wine "c:/Program Files (x86)/AMD/The Compressonator 1.50/TheCompressonator.exe" -convert -overwrite -mipmaps "$i".tga "$i"-amdcompress.dds -codec DXTC.dll +fourCC DXT1 -mipper BoxFilter.dll
-       html "$i"-amdcompress.dds
+       if $use_compressonator; then
+               time wine "c:/Program Files (x86)/AMD/The Compressonator 1.50/TheCompressonator.exe" -convert -overwrite -mipmaps "$i".tga "$i"-amdcompress.dds -codec DXTC.dll +fourCC DXT1 -mipper BoxFilter.dll
+               html "$i"-amdcompress.dds
+       fi
 
-       time nvcompress "$i".tga "$i"-nvcompress.dds
-       html "$i"-nvcompress.dds
+       if $use_nvcompress; then
+               time nvcompress "$i".tga "$i"-nvcompress.dds
+               html "$i"-nvcompress.dds
+       fi
 
-       ( LD_PRELOAD=/usr/lib/libtxc_dxtn.so                   t "$i".tga "$i"-libtxc_dxtn.dds ./s2tc )
+       if $use_libtxc_dxtn; then
+               ( LD_PRELOAD=/usr/lib/libtxc_dxtn.so           t "$i".tga "$i"-libtxc_dxtn.dds ./s2tc )
+       fi
        ( S2TC_COLORDIST_MODE=SRGB_MIXED S2TC_RANDOM_COLORS=64 t "$i".tga "$i"-rand64-mrgb.dds ./s2tc )
        ( S2TC_COLORDIST_MODE=WAVG       S2TC_RANDOM_COLORS=64 t "$i".tga "$i"-rand64-wavg.dds ./s2tc )
        ( S2TC_COLORDIST_MODE=WAVG       S2TC_RANDOM_COLORS=0  t "$i".tga "$i"-norand-wavg.dds ./s2tc )