[gegl] sampler-lohalo: wrong count in the mipmap aggregation

[Nicolas Robidoux <nrobidoux src gnome org>]

commit 4abe744ef44d9d8bceaaa283b172021cbe00ca75
Author: Nicolas Robidoux <nrobidoux git gnome org>
Date:   Wed Dec 26 22:23:22 2012 -0500

    sampler-lohalo: wrong count in the mipmap aggregation

 gegl/buffer/gegl-sampler-lohalo.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/gegl/buffer/gegl-sampler-lohalo.c b/gegl/buffer/gegl-sampler-lohalo.c
index c37d5e3..162aa83 100644
--- a/gegl/buffer/gegl-sampler-lohalo.c
+++ b/gegl/buffer/gegl-sampler-lohalo.c
@@ -1413,12 +1413,12 @@ mipmap_ewa_update (const gint              level,
   const gint skip = j * channels + i * row_skip;
 
   /*
-   * The factor of "2^(level+1)" = "2 << level" is because level
+   * The factor of "2^(2*level)" = "2 << (2*level)" is because level
    * mipmap values are averages of that many level 0 pixel values, and
    * the "1 << level" factor in the index is because the absolute
    * positions are correspondingly "stretched".
    */
-  const gfloat weight = (gfloat) ( 2 << level ) *
+  const gfloat weight = (gfloat) ( 2 << (2*level) ) *
                         teepee (c_major_x,
                                 c_major_y,
                                 c_minor_x,