From 47ee0bcee25aff219a921daf2d90359629b7120f Mon Sep 17 00:00:00 2001
From: Hugo Locurcio <hugo.locurcio@hugo.pro>
Date: Tue, 12 Apr 2022 00:23:22 +0200
Subject: [PATCH] Hide the first `--print-fps` outputs after the engine has
 started

The first 2 or 3 prints are inaccurate since the engine has just
started at that point.

(cherry picked from commit 2d56dfb746fb05c8cab090e4b411b1987e990fca)
---
 main/main.cpp | 16 +++++++++++-----
 main/main.h   |  1 +
 2 files changed, 12 insertions(+), 5 deletions(-)

diff --git a/main/main.cpp b/main/main.cpp
index dfce25548..bc841c37f 100644
--- a/main/main.cpp
+++ b/main/main.cpp
@@ -2122,6 +2122,7 @@ bool Main::start() {
 
 uint64_t Main::last_ticks = 0;
 uint32_t Main::frames = 0;
+uint32_t Main::hide_print_fps_attempts = 3;
 uint32_t Main::frame = 0;
 bool Main::force_redraw_requested = false;
 int Main::iterating = 0;
@@ -2300,12 +2301,17 @@ bool Main::iteration() {
 	Engine::get_singleton()->_idle_frames++;
 
 	if (frame > 1000000) {
-		if (editor || project_manager) {
-			if (print_fps) {
-				print_line(vformat("Editor FPS: %d (%s mspf)", frames, rtos(1000.0 / frames).pad_decimals(2)));
+		// Wait a few seconds before printing FPS, as FPS reporting just after the engine has started is inaccurate.
+		if (hide_print_fps_attempts == 0) {
+			if (editor || project_manager) {
+				if (print_fps) {
+					print_line(vformat("Editor FPS: %d (%s mspf)", frames, rtos(1000.0 / frames).pad_decimals(2)));
+				}
+			} else if (print_fps || GLOBAL_GET("debug/settings/stdout/print_fps")) {
+				print_line(vformat("Project FPS: %d (%s mspf)", frames, rtos(1000.0 / frames).pad_decimals(2)));
 			}
-		} else if (GLOBAL_GET("debug/settings/stdout/print_fps") || print_fps) {
-			print_line(vformat("Project FPS: %d (%s mspf)", frames, rtos(1000.0 / frames).pad_decimals(2)));
+		} else {
+			hide_print_fps_attempts--;
 		}
 
 		Engine::get_singleton()->_fps = frames;
diff --git a/main/main.h b/main/main.h
index 9ac4b58cd..65c86d521 100644
--- a/main/main.h
+++ b/main/main.h
@@ -37,6 +37,7 @@
 class Main {
 	static void print_help(const char *p_binary);
 	static uint64_t last_ticks;
+	static uint32_t hide_print_fps_attempts;
 	static uint32_t frames;
 	static uint32_t frame;
 	static bool force_redraw_requested;