main: experimenting with ANSI codes for --print-pipes

This turns --print-pipes into a more top-like display.  Redirect
the FPS on stderr somewhere else to get less flickering
e.g. 2>/dev/null

pipes print to stdout.

1 files changed, 3 insertions, 1 deletions

diff --git a/src/main.c b/src/main.c
index 37fef55..2e0229e 100644
--- a/src/main.c
+++ b/src/main.c
@@ -336,8 +336,10 @@ static void * rototiller_thread(void *_rt)
 		til_module_render(rt->module_context, rt->stream, ticks, &fragment);
 		til_fb_fragment_submit(fragment);
 
-		if (rt->args.print_pipes) /* render threads are idle at this point */
+		if (rt->args.print_pipes) { /* render threads are idle at this point */
+			printf("\x1b[2J\x1b[;H"); /* ANSI codes for clear screen and move cursor to top left */
 			til_stream_fprint(rt->stream, stdout);
+		}
 	}
 
 	return NULL;