[gegl] operations: move checkerboard kernel source to opencl folder

[Øyvind Kolås <ok src gnome org>]

commit c9c1181bc28189a09da2c8017e4a8bdd277e376e
Author: Nanley Chery <nanleychery gmail com>
Date:   Mon Dec 8 04:49:14 2014 -0500

    operations: move checkerboard kernel source to opencl folder

 opencl/checkerboard.cl           |   28 ++++++++++++++++++++++++++++
 opencl/checkerboard.cl.h         |   30 ++++++++++++++++++++++++++++++
 operations/common/checkerboard.c |   31 +------------------------------
 3 files changed, 59 insertions(+), 30 deletions(-)
---
diff --git a/opencl/checkerboard.cl b/opencl/checkerboard.cl
new file mode 100644
index 0000000..0644811
--- /dev/null
+++ b/opencl/checkerboard.cl
@@ -0,0 +1,28 @@
+inline int tile_index (int coordinate, int stride)      
+{                                                        
+  int a = (coordinate < 0);                              
+  return ((coordinate + a) / stride) - a;                
+}                                                        
+                                                         
+__kernel void kernel_checkerboard (__global float4 *out, 
+                                   float4 color1,        
+                                   float4 color2,        
+                                   int square_width,     
+                                   int square_height,    
+                                   int x_offset,         
+                                   int y_offset)         
+{                                                        
+    size_t roi_width = get_global_size(0);               
+    size_t roi_x     = get_global_offset(0);             
+    size_t roi_y     = get_global_offset(1);             
+    size_t gidx      = get_global_id(0) - roi_x;         
+    size_t gidy      = get_global_id(1) - roi_y;         
+                                                         
+    int x = get_global_id(0) - x_offset;                 
+    int y = get_global_id(1) - y_offset;                 
+                                                         
+    int tilex = tile_index (x, square_width);            
+    int tiley = tile_index (y, square_height);           
+    out[gidx + gidy * roi_width] = (tilex + tiley) & 1 ? 
+                                   color2 : color1;      
+}                                                        
diff --git a/opencl/checkerboard.cl.h b/opencl/checkerboard.cl.h
new file mode 100644
index 0000000..cda511f
--- /dev/null
+++ b/opencl/checkerboard.cl.h
@@ -0,0 +1,30 @@
+static const char* checkerboard_cl_source =
+"inline int tile_index (int coordinate, int stride)                            \n"
+"{                                                                             \n"
+"  int a = (coordinate < 0);                                                   \n"
+"  return ((coordinate + a) / stride) - a;                                     \n"
+"}                                                                             \n"
+"                                                                              \n"
+"__kernel void kernel_checkerboard (__global float4 *out,                      \n"
+"                                   float4 color1,                             \n"
+"                                   float4 color2,                             \n"
+"                                   int square_width,                          \n"
+"                                   int square_height,                         \n"
+"                                   int x_offset,                              \n"
+"                                   int y_offset)                              \n"
+"{                                                                             \n"
+"    size_t roi_width = get_global_size(0);                                    \n"
+"    size_t roi_x     = get_global_offset(0);                                  \n"
+"    size_t roi_y     = get_global_offset(1);                                  \n"
+"    size_t gidx      = get_global_id(0) - roi_x;                              \n"
+"    size_t gidy      = get_global_id(1) - roi_y;                              \n"
+"                                                                              \n"
+"    int x = get_global_id(0) - x_offset;                                      \n"
+"    int y = get_global_id(1) - y_offset;                                      \n"
+"                                                                              \n"
+"    int tilex = tile_index (x, square_width);                                 \n"
+"    int tiley = tile_index (y, square_height);                                \n"
+"    out[gidx + gidy * roi_width] = (tilex + tiley) & 1 ?                      \n"
+"                                   color2 : color1;                           \n"
+"}                                                                             \n"
+;
diff --git a/operations/common/checkerboard.c b/operations/common/checkerboard.c
index 319025c..f40eed4 100644
--- a/operations/common/checkerboard.c
+++ b/operations/common/checkerboard.c
@@ -87,42 +87,13 @@ get_bounding_box (GeglOperation *operation)
   return gegl_rectangle_infinite_plane ();
 }
 
-static const char* checkerboard_cl_source =
-"inline int tile_index (int coordinate, int stride)          \n"
-"{                                                           \n"
-"  int a = (coordinate < 0);                                 \n"
-"  return ((coordinate + a) / stride) - a;                   \n"
-"}                                                           \n"
-"                                                            \n"
-"__kernel void kernel_checkerboard (__global float4 *out,    \n"
-"                                   float4 color1,           \n"
-"                                   float4 color2,           \n"
-"                                   int square_width,        \n"
-"                                   int square_height,       \n"
-"                                   int x_offset,            \n"
-"                                   int y_offset)            \n"
-"{                                                           \n"
-"    size_t roi_width = get_global_size(0);                  \n"
-"    size_t roi_x     = get_global_offset(0);                \n"
-"    size_t roi_y     = get_global_offset(1);                \n"
-"    size_t gidx      = get_global_id(0) - roi_x;            \n"
-"    size_t gidy      = get_global_id(1) - roi_y;            \n"
-"                                                            \n"
-"    int x = get_global_id(0) - x_offset;                    \n"
-"    int y = get_global_id(1) - y_offset;                    \n"
-"                                                            \n"
-"    int tilex = tile_index (x, square_width);               \n"
-"    int tiley = tile_index (y, square_height);              \n"
-"    out[gidx + gidy * roi_width] = (tilex + tiley) & 1 ?    \n"
-"                                   color2 : color1;         \n"
-"}                                                           \n";
-
 #define TILE_INDEX(coordinate,stride) \
   (((coordinate) >= 0)?\
       (coordinate) / (stride):\
       ((((coordinate) + 1) /(stride)) - 1))
 
 
+#include "opencl/checkerboard.cl.h"
 static GeglClRunData *cl_data = NULL;
 
 static gboolean