--- rxvt-unicode/src/rxvtimg.C	2012/06/14 19:42:01	1.88
+++ rxvt-unicode/src/rxvtimg.C	2012/06/14 19:44:45	1.90
@@ -637,12 +637,14 @@
   for (int i = 0; i < 2; ++i)
     {
       nv v;
+
       v = mat_apply (matrix, i, 0+x, 0+y);         rmin [i] =            rmax [i] = v;
       v = mat_apply (matrix, i, w+x, 0+y); min_it (rmin [i], v); max_it (rmax [i],  v);
       v = mat_apply (matrix, i, 0+x, h+y); min_it (rmin [i], v); max_it (rmax [i],  v);
       v = mat_apply (matrix, i, w+x, h+y); min_it (rmin [i], v); max_it (rmax [i],  v);
     }
 
+  // TODO: adjust matrix for subpixel accuracy
   int dx = floor (rmin [0]);
   int dy = floor (rmin [1]);