Fix FramerateCounter and VRAM Counter (#820)

* Update FramerateCounter.hx

* Update FramerateCounter.hx

* Update FramerateCounter.hx

* Update FramerateCounter.hx

* Update FramerateCounter.hx

* Update FramerateCounter.hx

* Update FramerateCounter.hx

* Update FramerateCounter.hx

* Update FramerateCounter.hx

* Optimize memory label update in MemoryCounter

* Optimize frame update logic in AssetTreeInfo and MemoryCounter

* Fixed VRAM display showing -2147483648B

* Update SystemInfo.hx

* VRAM: 6MB?

source/funkin/backend/system/framerate/AssetTreeInfo.hx

@@ -8,12 +8,20 @@ import funkin.backend.assets.IModsAssetLibrary;
 import funkin.backend.assets.ScriptedAssetLibrary;
 
 class AssetTreeInfo extends FramerateCategory {
+	private var lastUpdateTime:Float = 1;
+
 	public function new() {
 		super("Asset Libraries Tree Info");
 	}
 
 	public override function __enterFrame(t:Int) {
 		if (alpha <= 0.05) return;
+
+		if ((lastUpdateTime += FlxG.rawElapsed) < 1)
+			return;
+
+		lastUpdateTime = 0;
+
 		var text = 'Not initialized yet\n';
 		if (Paths.assetsTree != null){
 			text = "";

source/funkin/backend/system/framerate/FramerateCounter.hx

@@ -9,6 +9,13 @@ class FramerateCounter extends Sprite {
 	public var fpsLabel:TextField;
 	public var lastFPS:Float = 0;
 
+	private var frameCount:Int = 0;
+
+	private var accumulatedTime:Float = openfl.Lib.getTimer();
+
+	private final updateInterval:Float = 1 / 15;
+	private var lastUpdateTime:Float = 0;
+
 	public function new() {
 		super();
 
@@ -27,15 +34,40 @@ class FramerateCounter extends Sprite {
 		}
 	}
 
-	public function reload() {}
+	public function reload() {
+		lastUpdateTime = 0;
+	}
 
 	public override function __enterFrame(t:Int) {
 		if (alpha <= 0.05) return;
+
 		super.__enterFrame(t);
 
-		lastFPS = CoolUtil.fpsLerp(lastFPS, FlxG.rawElapsed == 0 ? 0 : (1 / FlxG.rawElapsed), 0.25);
-		fpsNum.text = Std.string(Math.floor(lastFPS));
+		frameCount++;
+
+		if ((lastUpdateTime += FlxG.rawElapsed) < updateInterval)
+		{
+			updateLabelPosition();
+			return;
+		}
+
+		final timer = openfl.Lib.getTimer();
+
+		final time = timer - accumulatedTime;
+
+		accumulatedTime = timer;
+
+		lastFPS = FlxMath.lerp(lastFPS, time <= 0 ? 0 : (1000 / time * frameCount), 1.0 - Math.pow(0.75, time * 0.06));
+
+		fpsNum.text = Std.string(Math.round(lastFPS));
+		lastUpdateTime = frameCount = 0;
+
+		updateLabelPosition();
+	}
+
+	private inline function updateLabelPosition():Void
+	{
 		fpsLabel.x = fpsNum.x + fpsNum.width;
 		fpsLabel.y = (fpsNum.y + fpsNum.height) - fpsLabel.height;
 	}
-}
+}

source/funkin/backend/system/framerate/MemoryCounter.hx

@@ -36,11 +36,21 @@ class MemoryCounter extends Sprite {
 		if (alpha <= 0.05) return;
 		super.__enterFrame(t);
 
-		memory = MemoryUtil.currentMemUsage();
+		final mem = MemoryUtil.currentMemUsage();
+
+		if (mem == memory) {
+			updateLabelPosition();
+			return;
+		}
+
+		memory = mem;
 		if (memoryPeak < memory) memoryPeak = memory;
 		memoryText.text = CoolUtil.getSizeString(memory);
 		memoryPeakText.text = ' / ${CoolUtil.getSizeString(memoryPeak)}';
 
-		memoryPeakText.x = memoryText.x + memoryText.width;
+		updateLabelPosition();
 	}
+
+	private inline function updateLabelPosition():Void
+		memoryPeakText.x = memoryText.x + memoryText.width;
 }

source/funkin/backend/system/framerate/SystemInfo.hx

@@ -115,8 +115,7 @@ class SystemInfo extends FramerateCategory {
 					if (vRAMBytes == 1000 || vRAMBytes == 1 || vRAMBytes <= 0)
 						Logs.trace('Unable to grab GPU VRAM', ERROR, RED);
 					else {
-						var vRAMBytesFloat:#if cpp Float64 #else Float #end = vRAMBytes*1024;
-						vRAM = CoolUtil.getSizeString64(vRAMBytesFloat);
+						vRAM = getSizeString(vRAMBytes / 1024);
 					}
 				}
 			} else
@@ -155,6 +154,17 @@ class SystemInfo extends FramerateCategory {
 		if (totalMem != "Unknown" && memType != "Unknown") __formattedSysText += '\nTotal MEM: $totalMem $memType';
 	}
 
+	static function getSizeString(size:Float):String {
+		if (size < 1024)
+			return Std.int(size) + " MB";
+		else if (size < 1024 * 1024)
+			return Std.int(size / 1024) + " GB";
+		else {
+			var tb = size / (1024 * 1024);
+			return Std.int(tb) + "." + CoolUtil.addZeros(Std.string(Std.int((tb % 1) * 100)), 2) + " TB";
+		}
+	}
+
 	public function new() {
 		super("System Info");
 	}