mesa: only call update_buffer when it's available

2009-02-20 14:40:08 +00:00
parent 6b72227270
commit 01c0c01a6d
1 changed files with 1 additions and 1 deletions
@@ -40,7 +40,7 @@ static void st_viewport(GLcontext * ctx, GLint x, GLint y,
 {
   struct st_context *st = ctx->st;

-   if (st->pipe->winsys)
+   if (st->pipe->winsys && st->pipe->winsys->update_buffer)
      st->pipe->winsys->update_buffer( st->pipe->winsys,
                                       st->pipe->priv );
 }