[gegl] map-{absolute, relative}: don't require entire aux region for output

[N/A <ell src gnome org>]

commit 4164522310a92b2f4c12efb92e8dc8cd4d3e3c05
Author: Ell <ell_se yahoo com>
Date:   Wed May 17 11:13:31 2017 -0400

    map-{absolute,relative}: don't require entire aux region for output
    
    We only need the entire input region; for aux, the output region
    is enough.

 operations/common/map-absolute.c |    7 ++++---
 operations/common/map-relative.c |    7 ++++---
 2 files changed, 8 insertions(+), 6 deletions(-)
---
diff --git a/operations/common/map-absolute.c b/operations/common/map-absolute.c
index 8e40956..ce80a07 100644
--- a/operations/common/map-absolute.c
+++ b/operations/common/map-absolute.c
@@ -49,9 +49,10 @@ get_required_for_output (GeglOperation       *operation,
                          const gchar         *input_pad,
                          const GeglRectangle *region)
 {
-  GeglRectangle result = *gegl_operation_source_get_bounding_box (operation, "input");
-
-  return result;
+  if (! strcmp (input_pad, "input"))
+    return *gegl_operation_source_get_bounding_box (operation, "input");
+  else
+    return *region;
 }
 
 static gboolean
diff --git a/operations/common/map-relative.c b/operations/common/map-relative.c
index 174bc24..6ad1963 100644
--- a/operations/common/map-relative.c
+++ b/operations/common/map-relative.c
@@ -54,9 +54,10 @@ get_required_for_output (GeglOperation       *operation,
                          const gchar         *input_pad,
                          const GeglRectangle *region)
 {
-  GeglRectangle result = *gegl_operation_source_get_bounding_box (operation, "input");
-
-  return result;
+  if (! strcmp (input_pad, "input"))
+    return *gegl_operation_source_get_bounding_box (operation, "input");
+  else
+    return *region;
 }
 
 static gboolean