[cogl] texture: Flush the dependent journals on get_data

[Neil Roberts <nroberts src gnome org>]

commit 43bc0a4b0de72743c4eedd3cd6175c8b8c6cc658
Author: Neil Roberts <neil linux intel com>
Date:   Sat Jan 28 13:44:39 2012 +0000

    texture: Flush the dependent journals on get_data
    
    When calling cogl_texture_get_data we need to ensure that any
    framebuffers rendering to the texture have flushed their journals.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=668913
    
    Reviewed-by: Robert Bragg <robert linux intel com>

 cogl/cogl-texture.c |    5 +++++
 1 files changed, 5 insertions(+), 0 deletions(-)
---
diff --git a/cogl/cogl-texture.c b/cogl/cogl-texture.c
index bb8930a..d75f6c1 100644
--- a/cogl/cogl-texture.c
+++ b/cogl/cogl-texture.c
@@ -1243,6 +1243,11 @@ cogl_texture_get_data (CoglTexture     *texture,
     }
   tg_data.success = TRUE;
 
+  /* If there are any dependent framebuffers on the texture then we
+     need to flush their journals so the texture contents will be
+     up-to-date */
+  _cogl_texture_flush_journal_rendering (texture);
+
   /* Iterating through the subtextures allows piecing together
    * the data for a sliced texture, and allows us to do the
    * read-from-framebuffer logic here in a simple fashion rather than