[gegl] sampler.c: revert offset to one eight

[Nicolas Robidoux <nrobidoux src gnome org>]

commit b02ae0e6c74a07a0e371a4e5cf77ce59f9500d89
Author: Nicolas Robidoux <nrobidoux git gnome org>
Date:   Thu Dec 20 14:41:55 2012 -0500

    sampler.c: revert offset to one eight

 gegl/buffer/gegl-sampler.c |   12 ++++++------
 1 files changed, 6 insertions(+), 6 deletions(-)
---
diff --git a/gegl/buffer/gegl-sampler.c b/gegl/buffer/gegl-sampler.c
index bd2a273..b545aed 100644
--- a/gegl/buffer/gegl-sampler.c
+++ b/gegl/buffer/gegl-sampler.c
@@ -270,11 +270,11 @@ gegl_sampler_get_ptr (GeglSampler *const sampler,
       fetch_rectangle.x =
         x + sampler->context_rect[0].x -
         ((gint) 2 * maximum_width_and_height - sampler->context_rect[0].width ) /
-        (gint) 4;
+        (gint) 8;
       fetch_rectangle.y =
         y + sampler->context_rect[0].y -
         (maximum_width_and_height - sampler->context_rect[0].height) /
-        (gint) 4;
+        (gint) 8;
 
       fetch_rectangle.width  = (gint) 2 * maximum_width_and_height;
       fetch_rectangle.height = maximum_width_and_height;
@@ -352,10 +352,10 @@ gegl_sampler_get_from_buffer (GeglSampler *const sampler,
 
       fetch_rectangle.x = x -
         ((gint) 2 * maximum_width_and_height - sampler->context_rect[0].width ) /
-        (gint) 4;
+        (gint) 8;
       fetch_rectangle.y = y -
         (maximum_width_and_height - sampler->context_rect[0].height) /
-        (gint) 4;
+        (gint) 8;
 
       fetch_rectangle.width  = (gint) 2 * maximum_width_and_height;
       fetch_rectangle.height = maximum_width_and_height;
@@ -444,11 +444,11 @@ gegl_sampler_get_from_mipmap (GeglSampler *const sampler,
       fetch_rectangle.x =
         x + sampler->context_rect[level].x -
         ((gint) 2 * maximum_width_and_height - sampler->context_rect[level].width ) /
-        (gint) 4;
+        (gint) 8;
       fetch_rectangle.y =
         y + sampler->context_rect[level].y -
         (maximum_width_and_height - sampler->context_rect[level].height) /
-        (gint) 4;
+        (gint) 8;
 
       fetch_rectangle.width  = (gint) 2 * maximum_width_and_height;
       fetch_rectangle.height = maximum_width_and_height;