--- rxvt-unicode/src/rxvtimg.h	2012/06/05 15:18:24	1.12
+++ rxvt-unicode/src/rxvtimg.h	2012/06/05 18:52:48	1.13
@@ -45,6 +45,7 @@
   rxvt_img *scale (int new_width, int new_height);
   rxvt_img *rotate (int new_width, int new_height, int x, int y, double phi, int repeat = RepeatNormal);
   rxvt_img *convert_to (XRenderPictFormat *format);
+  rxvt_img *blend (rxvt_img *img, double factor);
 };
 
 #endif