--- rxvt-unicode/src/rxvtimg.C	2012/06/07 20:22:40	1.53
+++ rxvt-unicode/src/rxvtimg.C	2012/06/07 20:32:58	1.57
@@ -73,15 +73,17 @@
   // that both 24 and 32 bpp MUST be supported by any screen that supports xrender
   int depth = gdk_pixbuf_get_has_alpha (pb) ? 32 : 24;
 
+  int byte_order = ecb_big_endian () ? MSBFirst : LSBFirst;
+
   XImage xi;
 
   xi.width            = width;
   xi.height           = height;
   xi.xoffset          = 0;
   xi.format           = ZPixmap;
-  xi.byte_order       = LSBFirst; // maybe go for host byte order, because servers are usually local?
-  xi.bitmap_unit      = 32;         //XY only, unused
-  xi.bitmap_bit_order = LSBFirst;   //XY only, unused
+  xi.byte_order       = ImageByteOrder (dpy);
+  xi.bitmap_unit      = 0;         //XY only, unused
+  xi.bitmap_bit_order = 0;         //XY only, unused
   xi.bitmap_pad       = BitmapPad (dpy);
   xi.depth            = depth;
   xi.bytes_per_line   = 0;
@@ -91,6 +93,8 @@
   xi.blue_mask        = 0x00000000; //Z only, unused
   xi.obdata           = 0;          // probably unused
 
+  bool byte_order_mismatch = byte_order != xi.byte_order;
+
   if (!XInitImage (&xi))
     rxvt_fatal ("unable to initialise ximage, please report.\n");
 
@@ -119,7 +123,7 @@
 
             uint32_t v = (r << 16) | (g << 8) | b;
             
-            if (ecb_big_endian ())
+            if (ecb_big_endian () ? !byte_order_mismatch : byte_order_mismatch)
               v = ecb_bswap32 (v);
 
             *dst++ = v;
@@ -129,10 +133,13 @@
           {
             uint32_t v = *(uint32_t *)src; src += 4;
 
-            if (ecb_little_endian ())
+            if (ecb_big_endian ())
               v = ecb_bswap32 (v);
 
-            v = ecb_rotr32 (v, 8);
+            v = ecb_rotl32 (v, 8);
+
+            if (!byte_order_mismatch)
+              v = ecb_bswap32 (v);
 
             *dst++ = v;
           }