[gegl] panorama-projection: add a test-panorama

[Øyvind Kolås <ok src gnome org>]

commit c379c7c94a899325c50b3a56638249ba422c5964
Author: Øyvind Kolås <pippin gimp org>
Date:   Sun May 25 02:57:30 2014 +0200

    panorama-projection: add a test-panorama
    
    The panorama used is generated by code written by Øyvind Kolås, the image
    can be distributed under CC0

 docs/images/standard-panorama.png       |  Bin 0 -> 263463 bytes
 operations/common/panorama-projection.c |    1 +
 2 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/docs/images/standard-panorama.png b/docs/images/standard-panorama.png
new file mode 100644
index 0000000..c745260
Binary files /dev/null and b/docs/images/standard-panorama.png differ
diff --git a/operations/common/panorama-projection.c b/operations/common/panorama-projection.c
index ac44861..079fcf9 100644
--- a/operations/common/panorama-projection.c
+++ b/operations/common/panorama-projection.c
@@ -520,6 +520,7 @@ gegl_op_class_init (GeglOpClass *klass)
 
   gegl_operation_class_set_keys (operation_class,
     "name",                  "gegl:panorama-projection",
+    "reference-composition", composition,
     "position-dependent",    "true",
     "categories" ,           "misc",
     "description", _("Perform a equlinear/gnomonic or little planet/stereographic projection of a 
equirectangular input image."),