From 9cabad158afad69e6facbaf671906d53fbd6adbc Mon Sep 17 00:00:00 2001
From: str1k3r <115313679+S1l3ntStr1ke87@users.noreply.github.com>
Date: Sun, 23 Aug 2026 17:56:01 -0400
Subject: [PATCH] feat: ability to turn off vsync

---
 .../Common/Network/GameNetworkManager.cpp           |  8 ++++++++
 Minecraft.Client/Windows64/Windows64_Minecraft.cpp  | 13 +++++++++++--
 Minecraft.Client/Windows64/Windows64_Minecraft.h    |  1 +
 3 files changed, 20 insertions(+), 2 deletions(-)

diff --git a/Minecraft.Client/Common/Network/GameNetworkManager.cpp b/Minecraft.Client/Common/Network/GameNetworkManager.cpp
index 4f0e5ab7..6fefddff 100644
--- a/Minecraft.Client/Common/Network/GameNetworkManager.cpp
+++ b/Minecraft.Client/Common/Network/GameNetworkManager.cpp
@@ -37,6 +37,10 @@
 #include "..\..\Xbox\Network\NetworkPlayerXbox.h"
 #endif
 
+#ifdef _WINDOWS64
+#include "..\..\Windows64\Windows64_Minecraft.h"
+#endif
+
 #ifdef _DURANGO
 #include "..\Minecraft.World\DurangoStats.h"
 #endif
@@ -2032,7 +2036,11 @@ void CGameNetworkManager::ServerStoppedWait()
 			RenderManager.Tick();
 			ui.tick();
 			ui.render();
+#ifdef _WINDOWS64
+			RenderManager.Present(g_iScreenWidth, g_iScreenWidth);
+#else
 			RenderManager.Present();
+#endif
 		} while( result == WAIT_TIMEOUT );
 	}
 	else
diff --git a/Minecraft.Client/Windows64/Windows64_Minecraft.cpp b/Minecraft.Client/Windows64/Windows64_Minecraft.cpp
index 4ad078bf..a6d05e8f 100644
--- a/Minecraft.Client/Windows64/Windows64_Minecraft.cpp
+++ b/Minecraft.Client/Windows64/Windows64_Minecraft.cpp
@@ -91,6 +91,10 @@ static Windows64LaunchArgs ParseLaunchArgs()
 		{
 			args.fullscreen = true;
 		}
+		else if (_wcsicmp(argv[i], L"-no-vsync") == 0) //str1k3r - we all remember -femboysarecool right? also thank u neoapps for naming this arg
+		{
+			args.vsync = true;
+		}
 		else if (_wcsicmp(argv[i], L"-resolution") == 0)
 		{
 			if (i + 1 < argc && argv[i + 1][0] >= L'1' && argv[i + 1][0] <= L'6')
@@ -312,7 +316,7 @@ LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
 			// Tick UI
         	ui.tick();
         	ui.render();
-        	RenderManager.Present();
+			RenderManager.Present(g_iScreenWidth, g_iScreenWidth);
         	ui.CheckMenuDisplayed();
 
 			// Tick Managers
@@ -736,6 +740,11 @@ int APIENTRY _tWinMain(_In_ HINSTANCE hInstance,
 
 	app.loadMediaArchive();
 
+	if(launchArgs.vsync)
+	{
+		RenderManager.SetVSync(false); //str1k3r - vsync is set to try by default in 4JLibs
+	}
+
 	RenderManager.Initialise(g_pd3dDevice, g_pSwapChain);
 	
 	app.loadStringTable();
@@ -863,7 +872,7 @@ int APIENTRY _tWinMain(_In_ HINSTANCE hInstance,
 		ui.render();
 
 		// Present the frame.
-		RenderManager.Present();
+		RenderManager.Present(g_iScreenWidth, g_iScreenWidth);
 
 		ui.CheckMenuDisplayed();
 
diff --git a/Minecraft.Client/Windows64/Windows64_Minecraft.h b/Minecraft.Client/Windows64/Windows64_Minecraft.h
index ef912fbb..cb0b48e5 100644
--- a/Minecraft.Client/Windows64/Windows64_Minecraft.h
+++ b/Minecraft.Client/Windows64/Windows64_Minecraft.h
@@ -20,4 +20,5 @@ struct Windows64LaunchArgs
 {
 	bool fullscreen;
 	int resolution;
+	bool vsync;
 };
\ No newline at end of file