paint-nodes: Use the correct wrap mode for TextureNode

If we allow content repeats on the texture nodes, then we need to use
the "automatic" wrap mode for the texture layer in the pipeline, instead
of the clamp-to-edge one.

Reported-by: Matthew Watson <matthew@endlessm.com>
Signed-off-by: Emmanuele Bassi <ebassi@gnome.org>

clutter/clutter-paint-nodes.c

@@ -81,7 +81,7 @@ _clutter_paint_node_init_types (void)
                                         COGL_TEXTURE_TYPE_2D);
   cogl_pipeline_set_color (default_texture_pipeline, &cogl_color);
   cogl_pipeline_set_layer_wrap_mode (default_texture_pipeline, 0,
-                                     COGL_PIPELINE_WRAP_MODE_CLAMP_TO_EDGE);
+                                     COGL_PIPELINE_WRAP_MODE_AUTOMATIC);
 }
 
 /*