diff --git a/tests/visual_tests/grids/text-halo-rasterizer-600-400-1.0-grid-reference.json b/tests/visual_tests/grids/text-halo-rasterizer-600-400-1.0-grid-reference.json
index 77ad10421..c0d6cbd55 100644
--- a/tests/visual_tests/grids/text-halo-rasterizer-600-400-1.0-grid-reference.json
+++ b/tests/visual_tests/grids/text-halo-rasterizer-600-400-1.0-grid-reference.json
@@ -1,16 +1,22 @@
 {
  "keys": [
   "", 
-  "5", 
-  "10", 
-  "4", 
-  "9", 
-  "3", 
-  "8", 
-  "2", 
-  "7", 
   "1", 
-  "6"
+  "9", 
+  "2", 
+  "10", 
+  "3", 
+  "11", 
+  "4", 
+  "12", 
+  "5", 
+  "13", 
+  "6", 
+  "14", 
+  "7", 
+  "15", 
+  "8", 
+  "16"
  ], 
  "data": {}, 
  "grid": [
@@ -22,20 +28,10 @@
   "                                                                                                                                                      ", 
   "                                                                                                                                                      ", 
   "                                                                                                                                                      ", 
-  "                                                 !!!!  !! !!!                             ### #######                                                 ", 
-  "                                                 !!!!!!!!!!!!                             ###########                                                 ", 
-  "                                                 !!!!!!!!!!!!!                            ###########                                                 ", 
-  "                                                 !!!!!!!!!!!!!                            ###########                                                 ", 
-  "                                                 !!!!!!!!! !!                             ####### ###                                                 ", 
   "                                                                                                                                                      ", 
-  "                                                                                                                                                      ", 
-  "                                                                                                                                                      ", 
-  "                                                                                                                                                      ", 
-  "                                                                                                                                                      ", 
-  "                                                $$      $$$ $$$                          %% %%% %% %%%                                                ", 
-  "                                                $$$$$$$$$$$ $$$                         %%%%%%% %% %%%                                                ", 
-  "                                                $$$$$$$$ $$ $$$                         %%%%%%% %% %%%                                                ", 
-  "                                                $$$$$$$$$$$$$$$                          %%%%%%%%%%%%%                                                ", 
+  "                                                       !   !                              #   ##   #                                                  ", 
+  "                                                   !!! !                                  #  ###   #                                                  ", 
+  "                                                   !!!!!! !!!                             # #### # #                                                  ", 
   "                                                                                                                                                      ", 
   "                                                                                                                                                      ", 
   "                                                                                                                                                      ", 
@@ -43,6 +39,9 @@
   "                                                                                                                                                      ", 
   "                                                                                                                                                      ", 
   "                                                                                                                                                      ", 
+  "                                                       $   $$                             %   %%  %                                                   ", 
+  "                                                   $$$ $    $                             %  %%%   %                                                  ", 
+  "                                                   $$$$$$ $$$                             % %%%% %%%                                                  ", 
   "                                                                                                                                                      ", 
   "                                                                                                                                                      ", 
   "                                                                                                                                                      ", 
@@ -50,12 +49,9 @@
   "                                                                                                                                                      ", 
   "                                                                                                                                                      ", 
   "                                                                                                                                                      ", 
-  "                                                                                                                                                      ", 
-  "                                                                                                                                                      ", 
-  "                                                                                                                                                      ", 
-  "                                                &&&&&&&& &  &&                           '' ''' '' '''                                                ", 
-  "                                                & &&&&&  &  &&&                          '' '''  ' '''                                                ", 
-  "                                                &&&&&&&& &&&&&&                          '''''' ''''''                                                ", 
+  "                                                       &   &                              '   ''                                                      ", 
+  "                                                   &&& &   &&                             '  '''   '                                                  ", 
+  "                                                   &&&&&& &&&                             ' '''' '''                                                  ", 
   "                                                                                                                                                      ", 
   "                                                                                                                                                      ", 
   "                                                                                                                                                      ", 
@@ -63,6 +59,9 @@
   "                                                                                                                                                      ", 
   "                                                                                                                                                      ", 
   "                                                                                                                                                      ", 
+  "                                                       (   ((                             )   ))  ))                                                  ", 
+  "                                                   ((( (    (                             )  )))   )                                                  ", 
+  "                                                   (((((( (                               ) )))) ) )                                                  ", 
   "                                                                                                                                                      ", 
   "                                                                                                                                                      ", 
   "                                                                                                                                                      ", 
@@ -70,12 +69,9 @@
   "                                                                                                                                                      ", 
   "                                                                                                                                                      ", 
   "                                                                                                                                                      ", 
-  "                                                                                                                                                      ", 
-  "                                                                                                                                                      ", 
-  "                                                                                                                                                      ", 
-  "                                                  ((( ((( ((                              ))))))  )                                                   ", 
-  "                                                  (((((((  (                               )))))  )                                                   ", 
-  "                                                  ((((((( (((                              )))))  ))                                                  ", 
+  "                                                  *** *** **                              ++++++  +                                                   ", 
+  "                                                  *******  *                               +++++  +                                                   ", 
+  "                                                  ******* ***                              +++++  ++                                                  ", 
   "                                                                                                                                                      ", 
   "                                                                                                                                                      ", 
   "                                                                                                                                                      ", 
@@ -83,21 +79,31 @@
   "                                                                                                                                                      ", 
   "                                                                                                                                                      ", 
   "                                                                                                                                                      ", 
+  "                                                ,,,,,,,, ,  ,,                           -- --- -- ---                                                ", 
+  "                                                , ,,,,,  ,  ,,,                          -- ---  - ---                                                ", 
+  "                                                ,,,,,,,, ,,,,,,                          ------ ------                                                ", 
   "                                                                                                                                                      ", 
   "                                                                                                                                                      ", 
   "                                                                                                                                                      ", 
   "                                                                                                                                                      ", 
   "                                                                                                                                                      ", 
   "                                                                                                                                                      ", 
+  "                                                ..      ... ...                          // /// // ///                                                ", 
+  "                                                ........... ...                         /////// // ///                                                ", 
+  "                                                ........ .. ...                         /////// // ///                                                ", 
+  "                                                ...............                          /////////////                                                ", 
   "                                                                                                                                                      ", 
   "                                                                                                                                                      ", 
   "                                                                                                                                                      ", 
   "                                                                                                                                                      ", 
-  "                                                       *   *                              +   ++                                                      ", 
-  "                                                   *** *   **                             +  +++                                                      ", 
-  "                                                   ****** ***                             + ++++ +++                                                  ", 
   "                                                                                                                                                      ", 
   "                                                                                                                                                      ", 
+  "                                                 0000  00 000                             111 1111111                                                 ", 
+  "                                                 000000000000                             11111111111                                                 ", 
+  "                                                 0000000000000                            11111111111                                                 ", 
+  "                                                 0000000000000                            11111111111                                                 ", 
+  "                                                 000000000 00                             1111111 111                                                 ", 
+  "                                                                                                                                                      ", 
   "                                                                                                                                                      ", 
   "                                                                                                                                                      ", 
   "                                                                                                                                                      ", 
diff --git a/tests/visual_tests/images/text-halo-rasterizer-600-400-1.0-agg-reference.png b/tests/visual_tests/images/text-halo-rasterizer-600-400-1.0-agg-reference.png
index cd0cd7e6c..2a7bfe2cc 100644
Binary files a/tests/visual_tests/images/text-halo-rasterizer-600-400-1.0-agg-reference.png and b/tests/visual_tests/images/text-halo-rasterizer-600-400-1.0-agg-reference.png differ
diff --git a/tests/visual_tests/images/text-halo-rasterizer-600-400-1.0-cairo-reference.png b/tests/visual_tests/images/text-halo-rasterizer-600-400-1.0-cairo-reference.png
index 44699253f..6a50f9c64 100644
Binary files a/tests/visual_tests/images/text-halo-rasterizer-600-400-1.0-cairo-reference.png and b/tests/visual_tests/images/text-halo-rasterizer-600-400-1.0-cairo-reference.png differ
diff --git a/tests/visual_tests/images/text-halo-rasterizer-600-400-2.0-agg-reference.png b/tests/visual_tests/images/text-halo-rasterizer-600-400-2.0-agg-reference.png
index 97e884a0b..6bd7f2bd0 100644
Binary files a/tests/visual_tests/images/text-halo-rasterizer-600-400-2.0-agg-reference.png and b/tests/visual_tests/images/text-halo-rasterizer-600-400-2.0-agg-reference.png differ
diff --git a/tests/visual_tests/images/text-halo-rasterizer-600-400-2.0-cairo-reference.png b/tests/visual_tests/images/text-halo-rasterizer-600-400-2.0-cairo-reference.png
index bbfd790ce..2758f3d21 100644
Binary files a/tests/visual_tests/images/text-halo-rasterizer-600-400-2.0-cairo-reference.png and b/tests/visual_tests/images/text-halo-rasterizer-600-400-2.0-cairo-reference.png differ