[gegl] operations: missing work-group size querries in stretch-contrast (OpenCL)

[Téo Mazars <teom src gnome org>]

commit aee63677f796c2e24124678f25a5888182accc66
Author: Téo Mazars <teomazars gmail com>
Date:   Thu Nov 14 16:40:00 2013 +0100

    operations: missing work-group size querries in stretch-contrast (OpenCL)

 operations/common/stretch-contrast.c |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)
---
diff --git a/operations/common/stretch-contrast.c b/operations/common/stretch-contrast.c
index 18b364d..f68f78f 100644
--- a/operations/common/stretch-contrast.c
+++ b/operations/common/stretch-contrast.c
@@ -140,6 +140,10 @@ cl_buffer_get_min_max (cl_mem               in_tex,
                                  sizeof (size_t), &max_local_ws, NULL);
   CL_CHECK;
 
+  max_local_ws = MIN (max_local_ws,
+                      MIN (cl_data->work_group_size[0],
+                           cl_data->work_group_size[1]));
+
   /* Needs to be a power of two */
   local_ws = 256;
   while (local_ws > max_local_ws)