[gnome-photos/gnome-3-24] application: Log whether OpenCL is enabled or not

[Debarshi Ray <debarshir src gnome org>]

commit f249295e3fef0c4e716c298a093d278335205ef3
Author: Debarshi Ray <debarshir gnome org>
Date:   Fri Aug 11 18:27:30 2017 +0200

    application: Log whether OpenCL is enabled or not
    
    Not every GEGL operation's OpenCL implementation is as well-tested as
    it should be. This can be helpful in finding out if some bug is being
    caused by OpenCL being enabled or not.

 src/photos-application.c |    6 ++++++
 1 files changed, 6 insertions(+), 0 deletions(-)
---
diff --git a/src/photos-application.c b/src/photos-application.c
index 6c68298..816e723 100644
--- a/src/photos-application.c
+++ b/src/photos-application.c
@@ -574,9 +574,15 @@ photos_application_gegl_init_fishes_idle (gpointer user_data)
 static gboolean
 photos_application_sanity_check_gegl (PhotosApplication *self)
 {
+  GeglConfig *config;
   gboolean ret_val = TRUE;
+  gboolean use_opencl;
   guint i;
 
+  config = gegl_config ();
+  g_object_get (config, "use-opencl", &use_opencl, NULL);
+  photos_debug (PHOTOS_DEBUG_GEGL, "Using OpenCL: %s", use_opencl ? "yes" : "no");
+
   for (i = 0; i < G_N_ELEMENTS (REQUIRED_GEGL_OPS); i++)
     {
       if (!gegl_has_operation (REQUIRED_GEGL_OPS[i]))