--- rxvt-unicode/configure.ac	2010/10/13 23:04:56	1.118
+++ rxvt-unicode/configure.ac	2010/10/31 08:28:01	1.120
@@ -433,6 +433,8 @@
 
 AC_PATH_XTRA
 
+image_lib=none
+
 PIXBUF_CFLAGS=
 PIXBUF_LIBS=
 
@@ -448,6 +450,7 @@
 
   if test x$support_pixbuf = xyes; then
     AC_MSG_RESULT(ok)
+    image_lib=gdk-pixbuf
     support_afterimage=no
     AC_DEFINE(HAVE_PIXBUF, 1, Define if you want to use gdk-pixbuf for image processing)
     AC_DEFINE(BG_IMAGE_FROM_FILE, 1, Define if you want to have sexy-looking background pixmaps.)
@@ -488,6 +491,7 @@
     fi
     if test "x$support_afterimage" = "xyes"; then
       AC_MSG_RESULT($AFTERIMAGE_LIBS)
+      image_lib=libafterimage
       AC_DEFINE(HAVE_AFTERIMAGE, 1, Define if you want to use libAfterImage for image processing)
       AC_DEFINE(BG_IMAGE_FROM_FILE, 1, Define if you want to have sexy-looking background pixmaps.)
     else
@@ -647,6 +651,25 @@
     AC_DEFINE(XFT, 1, Define to enable xft support)
   fi
 fi
+if test x$support_inheritpixmap = xyes; then
+  support_xrender=yes
+  AC_PATH_PROG(PKG_CONFIG, pkg-config, no)
+  if test $PKG_CONFIG != no && $PKG_CONFIG --exists xrender; then
+    X_LIBS="`$PKG_CONFIG xrender --libs` $X_LIBS"
+    CPPFLAGS="$CPPFLAGS `$PKG_CONFIG xrender --cflags`"
+
+    save_LIBS="$LIBS"
+    LIBS="$LIBS $X_LIBS"
+    AC_CHECK_HEADER(X11/extensions/Xrender.h,,[support_xrender=no])
+    AC_CHECK_FUNC(XRenderFindStandardFormat,,[support_xrender=no])
+    LIBS="$save_LIBS"
+  fi
+
+  if test x$support_xrender = xyes; then
+    LIBS="$LIBS -lm"
+    AC_DEFINE(XRENDER, 1, Define to enable xrender support)
+  fi
+fi
 if test x$support_styles = xyes; then
   AC_DEFINE(ENABLE_STYLES, 1, Define if you want bold and italic support)
 fi
@@ -661,7 +684,6 @@
 fi
 if test x$support_inheritpixmap = xyes; then
   AC_DEFINE(ENABLE_TRANSPARENCY, 1, Define if you want your background to use the parent window background)
-  test x$support_xft = xyes && LIBS="$LIBS -lm"
 fi
 if test x$support_keepscrolling = xno; then
   AC_DEFINE(NO_SCROLLBAR_BUTTON_CONTINUAL_SCROLLING, 1, Define for continual scrolling when you keep the scrollbar button pressed)
@@ -794,7 +816,7 @@
 fi
 echo
 echo "  embedded perl:              $support_perl"
-echo "  libafterimage:              $support_afterimage"
+echo "  image library:              $image_lib"
 echo
 if test x$support_xim = xyes -a x$rxvt_cv_func_xlocale = xno; then
   echo ".----------------------------------------------------------------."