[gimp/pippin/goat-invasion] app: gimptilebackendtilemanager fix missing last row/col of tiles

[Ãyvind KolÃs <ok src gnome org>]

commit f5c7e7483b9dce45021e83089ec2c0ae88bc40bf
Author: Ãyvind KolÃs <pippin gimp org>
Date:   Wed Mar 14 22:41:33 2012 +0000

    app: gimptilebackendtilemanager fix missing last row/col of tiles
    
    Avoid 0 copy assumptions for tiles with ewidth and eheight != 64

 app/gegl/gimptilebackendtilemanager.c |   25 +++++++++++--------------
 1 files changed, 11 insertions(+), 14 deletions(-)
---
diff --git a/app/gegl/gimptilebackendtilemanager.c b/app/gegl/gimptilebackendtilemanager.c
index ac4c85a..49343ec 100644
--- a/app/gegl/gimptilebackendtilemanager.c
+++ b/app/gegl/gimptilebackendtilemanager.c
@@ -212,24 +212,21 @@ gimp_tile_write (GimpTileBackendTileManager *backend_tm,
 
   gimp_tile = tile_manager_get_at (backend_tm->priv->tile_manager,
                                    x, y, TRUE, TRUE);
-
   if (!gimp_tile)
     return;
 
-  /* if the memory pointer already points to the data, there is
-   * no point in copying it
-   */
-  if (source != tile_data_pointer (gimp_tile, 0, 0))
+  tile_stride      = TILE_WIDTH * tile_bpp (gimp_tile);
+  gimp_tile_stride = tile_ewidth (gimp_tile) * tile_bpp (gimp_tile);
+
+  if (source != tile_data_pointer (gimp_tile, 0, 0) ||
+      (tile_stride != gimp_tile_stride || TILE_HEIGHT != tile_eheight (gimp_tile)))
+    for (row = 0; row < tile_eheight (gimp_tile); row++)
+        memcpy (tile_data_pointer (gimp_tile, 0, row),
+                source + row * tile_stride,
+                gimp_tile_stride);
+  else
     {
-      tile_stride      = TILE_WIDTH * tile_bpp (gimp_tile);
-      gimp_tile_stride = tile_ewidth (gimp_tile) * tile_bpp (gimp_tile);
-
-      for (row = 0; row < tile_eheight (gimp_tile); row++)
-        {
-          memcpy (tile_data_pointer (gimp_tile, 0, row),
-                  source + row * tile_stride,
-                  gimp_tile_stride);
-        }
+      /* no copy needed */
     }
 
   tile_release (gimp_tile, TRUE);