[gegl] gegl: only flush cl caches when cl is enabled

[Øyvind Kolås <ok src gnome org>]

commit 976b8be524ea91fdde7cfc5d08f7e7c732673f34
Author: Øyvind Kolås <pippin gimp org>
Date:   Wed Nov 15 03:38:13 2017 +0100

    gegl: only flush cl caches when cl is enabled

 gegl/operation/gegl-operation-point-composer.c  |   11 +++++++----
 gegl/operation/gegl-operation-point-composer3.c |   15 +++++++++------
 gegl/operation/gegl-operation-point-filter.c    |    2 +-
 perf/test-scale.c                               |    5 ++++-
 4 files changed, 21 insertions(+), 12 deletions(-)
---
diff --git a/gegl/operation/gegl-operation-point-composer.c b/gegl/operation/gegl-operation-point-composer.c
index b3763fe..0a1a83a 100644
--- a/gegl/operation/gegl-operation-point-composer.c
+++ b/gegl/operation/gegl-operation-point-composer.c
@@ -343,10 +343,13 @@ gegl_operation_point_composer_process (GeglOperation       *operation,
         }
         pending = threads;
 
-        if (input)
-          gegl_buffer_cl_cache_flush (input, result);
-        if (aux)
-          gegl_buffer_cl_cache_flush (aux, result);
+        if (gegl_cl_is_accelerated ())
+        {
+          if (input)
+            gegl_buffer_cl_cache_flush (input, result);
+          if (aux)
+            gegl_buffer_cl_cache_flush (aux, result);
+        }
 
         for (gint j = 1; j < threads; j++)
           g_thread_pool_push (pool, &thread_data[j], NULL);
diff --git a/gegl/operation/gegl-operation-point-composer3.c b/gegl/operation/gegl-operation-point-composer3.c
index d1bf967..8d6e81b 100644
--- a/gegl/operation/gegl-operation-point-composer3.c
+++ b/gegl/operation/gegl-operation-point-composer3.c
@@ -258,12 +258,15 @@ gegl_operation_point_composer3_process (GeglOperation       *operation,
         }
         pending = threads;
 
-        if (input)
-          gegl_buffer_cl_cache_flush (input, result);
-        if (aux)
-          gegl_buffer_cl_cache_flush (aux, result);
-        if (aux2)
-          gegl_buffer_cl_cache_flush (aux2, result);
+        if (gegl_cl_is_accelerated ())
+        {
+          if (input)
+            gegl_buffer_cl_cache_flush (input, result);
+          if (aux)
+            gegl_buffer_cl_cache_flush (aux, result);
+          if (aux2)
+            gegl_buffer_cl_cache_flush (aux2, result);
+        }
 
         for (gint j = 1; j < threads; j++)
           g_thread_pool_push (pool, &thread_data[j], NULL);
diff --git a/gegl/operation/gegl-operation-point-filter.c b/gegl/operation/gegl-operation-point-filter.c
index d0d69dc..c20ca3e 100644
--- a/gegl/operation/gegl-operation-point-filter.c
+++ b/gegl/operation/gegl-operation-point-filter.c
@@ -315,7 +315,7 @@ gegl_operation_point_filter_process (GeglOperation       *operation,
 
         pending = threads;
 
-        if (input)
+        if (gegl_cl_is_accelerated () && input)
           gegl_buffer_cl_cache_flush (input, result);
 
         for (gint j = 1; j < threads; j++)
diff --git a/perf/test-scale.c b/perf/test-scale.c
index f326730..e34f7c9 100644
--- a/perf/test-scale.c
+++ b/perf/test-scale.c
@@ -27,7 +27,10 @@ void scale(GeglBuffer *buffer)
 
   gegl = gegl_node_new ();
   source = gegl_node_new_child (gegl, "operation", "gegl:buffer-source", "buffer", buffer, NULL);
-  scale = gegl_node_new_child (gegl, "operation", "gegl:scale-ratio", "x", 0.4, "y", 0.4, NULL);
+  scale = gegl_node_new_child (gegl, "operation", "gegl:scale-ratio", "x", 0.4, "y", 0.4,
+  "sampler", GEGL_SAMPLER_LINEAR,
+
+NULL);
   sink = gegl_node_new_child (gegl, "operation", "gegl:buffer-sink", "buffer", &buffer2, NULL);
 
   gegl_node_link_many (source, scale, sink, NULL);