[gegl] fractal trace: use cubic instead of nohalo as sampler

[Øyvind Kolås <ok src gnome org>]

commit d7bd4170e80d69709095630d1dcad96e661feeef
Author: Øyvind Kolås <pippin gimp org>
Date:   Sat May 7 18:29:06 2016 +0200

    fractal trace: use cubic instead of nohalo as sampler

 operations/common/fractal-trace.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/operations/common/fractal-trace.c b/operations/common/fractal-trace.c
index 546b147..d851f21 100644
--- a/operations/common/fractal-trace.c
+++ b/operations/common/fractal-trace.c
@@ -204,7 +204,7 @@ process (GeglOperation       *operation,
 
   format = babl_format ("RGBA float");
   dst_buf = g_new0 (gfloat, result->width * result->height * 4);
-  sampler = gegl_buffer_sampler_new_at_level (input, format, GEGL_SAMPLER_NOHALO, level);
+  sampler = gegl_buffer_sampler_new_at_level (input, format, GEGL_SAMPLER_CUBIC, level);
 
   for (y = result->y; y < result->y + result->height; y++)
     fractaltrace (input, sampler, &boundary, dst_buf, result, o, y, o->fractal, format, level);