[gegl/opencl-ops: 2/14] Add OpenCL support for gegl:grey

[Ãyvind KolÃs <ok src gnome org>]

commit 456b746687b1ce3d887f9d646f8c9e98a0a54983
Author: Zhang Peixuan <zhangpeixuan cn gmail com>
Date:   Tue Mar 6 17:41:10 2012 +0800

    Add OpenCL support for gegl:grey

 operations/common/grey.c |   23 +++++++++++++++++++++++
 1 files changed, 23 insertions(+), 0 deletions(-)
---
diff --git a/operations/common/grey.c b/operations/common/grey.c
index bcda3cc..fb47b18 100644
--- a/operations/common/grey.c
+++ b/operations/common/grey.c
@@ -59,6 +59,27 @@ process (GeglOperation       *op,
   return TRUE;
 }
 
+#include "opencl/gegl-cl.h"
+
+static cl_int
+cl_process (GeglOperation       *op,
+            cl_mem              in_tex,
+            cl_mem              out_tex,
+            size_t              global_worksize,
+            const GeglRectangle *roi)
+{
+  cl_int cl_err = 0;
+
+  cl_err = gegl_clEnqueueCopyBuffer(gegl_cl_get_command_queue(),
+                                    in_tex , out_tex , 0 , 0 ,
+                                    global_worksize* sizeof (cl_float2),
+                                    NULL, NULL, NULL);
+
+  if (CL_SUCCESS != cl_err) return cl_err;
+
+  return cl_err;
+}
+
 
 static void
 gegl_chant_class_init (GeglChantClass *klass)
@@ -71,8 +92,10 @@ gegl_chant_class_init (GeglChantClass *klass)
 
   point_filter_class->process = process;
   operation_class->prepare = prepare;
+  point_filter_class->cl_process = cl_process;
 
   operation_class->name        = "gegl:grey";
+  operation_class->opencl_support = TRUE;
   operation_class->categories  = "color";
   operation_class->description = _("Turns the image greyscale");
 }