[gegl] gegl: add handling of GEGL_BUFFER_NEAREST also for gegl_node_blit

[Øyvind Kolås <ok src gnome org>]

commit e9b73ed4b7a01f656cbd1a56194a44154ca6a383
Author: Øyvind Kolås <pippin gimp org>
Date:   Fri Jan 26 05:13:44 2018 +0100

    gegl: add handling of GEGL_BUFFER_NEAREST also for gegl_node_blit

 gegl/graph/gegl-node.c |    7 +++++--
 1 files changed, 5 insertions(+), 2 deletions(-)
---
diff --git a/gegl/graph/gegl-node.c b/gegl/graph/gegl-node.c
index 7d07394..0b6bb2b 100644
--- a/gegl/graph/gegl-node.c
+++ b/gegl/graph/gegl-node.c
@@ -1136,6 +1136,9 @@ gegl_node_blit (GeglNode            *self,
                 gint                 rowstride,
                 GeglBlitFlags        flags)
 {
+  gboolean do_nearest = (flags & GEGL_BUFFER_NEAREST) != 0;
+  flags &= 0xf;
+
   g_return_if_fail (GEGL_IS_NODE (self));
   g_return_if_fail (roi != NULL);
 
@@ -1158,7 +1161,7 @@ gegl_node_blit (GeglNode            *self,
           buffer = gegl_node_apply_roi (self, roi, 0);
         }
       if (buffer && destination_buf)
-        gegl_buffer_get (buffer, roi, scale, format, destination_buf, rowstride, GEGL_ABYSS_NONE);
+        gegl_buffer_get (buffer, roi, scale, format, destination_buf, rowstride, GEGL_ABYSS_NONE | 
(do_nearest?GEGL_BUFFER_NEAREST:0));
 
       g_clear_object (&buffer);
     }
@@ -1194,7 +1197,7 @@ gegl_node_blit (GeglNode            *self,
         {
           gegl_buffer_get (buffer, roi, scale,
                            format, destination_buf, rowstride,
-                           GEGL_ABYSS_NONE);
+                           GEGL_ABYSS_NONE|(do_nearest?GEGL_BUFFER_NEAREST:0));
         }
     }
 }