--- a/render_thread.h	Thu Jun 26 01:32:56 2008 +0300
+++ b/render_thread.h	Thu Jun 26 02:57:20 2008 +0300
@@ -10,7 +10,7 @@
 
 struct render_thread;
 
-typedef void (*render_thread_done_cb)(struct render_thread *ctx, void *arg);
+typedef void (*render_thread_done_cb)(struct render_thread *ctx, int err, void *arg);
 
 struct render_thread *render_thread_alloc (struct render *render, render_thread_done_cb cb_func, void *cb_arg);