swc

commit c6daffdc4667e0396be62993409d5490f3e05252
parent e1f849858b43c2092fec476a74dd4a6b19435dec
Author: Michael Forney <mforney@mforney.org>
Date:   Sat, 16 Aug 2014 12:51:05 -0700

compositor: Add comment about update logic

Diffstat:
M
libswc/compositor.c
 | 
4
+++-

1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/libswc/compositor.c b/libswc/compositor.c
@@ -131,7 +131,9 @@ static void handle_screen_frame(struct view_handler * handler, uint32_t time)
     target->current_buffer = target->next_buffer;
 
     /* If we had scheduled updates that couldn't run because we were
-     * waiting on a page flip, run them now. */
+     * waiting on a page flip, run them now. If the compositor is
+     * currently updating, then the frame finished immediately, and we
+     * can be sure that there are no pending updates. */
     if (compositor.scheduled_updates && !compositor.updating)
         perform_update(NULL);
 }