From f74371327ea1fb517348eacb21a70551c69e6b51 Mon Sep 17 00:00:00 2001
From: Kawe Mazidjatari <48657826+Mauler125@users.noreply.github.com>
Date: Sat, 21 May 2022 13:11:10 +0200
Subject: [PATCH] Reduce CPU time on dedicated server

Don't run 'CInputSystem::RunFrameIME()' each frame
---
 r5dev/common/opcodes.cpp |  7 +++++++
 r5dev/common/opcodes.h   | 16 ++++++++++++++++
 2 files changed, 23 insertions(+)

diff --git a/r5dev/common/opcodes.cpp b/r5dev/common/opcodes.cpp
index 954aac2f..c1d9bd10 100644
--- a/r5dev/common/opcodes.cpp
+++ b/r5dev/common/opcodes.cpp
@@ -178,6 +178,13 @@ void Dedicated_Init()
 		CEngineVGui__ActivateGameUI.FindPatternSelf("74 08", CMemory::Direction::DOWN).Patch({ 0x90, 0x90 }); // JZ  --> NOP | Remove condition to return early when engine attempts to activate UI on the server.
 	}
 
+	//-------------------------------------------------------------------------
+	// CENGINEVGUI
+	//-------------------------------------------------------------------------
+	{
+		CInputSystem__RunFrameIME.Patch({ 0xB8, 0x00, 0x00, 0x00, 0x00, 0xC3 });       // FUN --> RET | Return early in 'CInputSystem::RunFrameIME()'.
+	}
+
 	//-------------------------------------------------------------------------
 	// MM_HEARTBEAT
 	//-------------------------------------------------------------------------
diff --git a/r5dev/common/opcodes.h b/r5dev/common/opcodes.h
index 164a329c..2b85797f 100644
--- a/r5dev/common/opcodes.h
+++ b/r5dev/common/opcodes.h
@@ -32,6 +32,11 @@ inline CMemory CVGui__RunFrame;
 inline CMemory CEngineVGui__Shutdown;
 inline CMemory CEngineVGui__ActivateGameUI;
 
+//-------------------------------------------------------------------------
+// CENGINEVGUI
+//-------------------------------------------------------------------------
+inline CMemory CInputSystem__RunFrameIME;
+
 //-------------------------------------------------------------------------
 // RUNTIME: SYS_INITGAME
 //-------------------------------------------------------------------------
@@ -104,6 +109,8 @@ class VOpcodes : public IDetour
 		spdlog::debug("| FUN: CEngineVGui::Shutdown                : {:#18x} |\n", CEngineVGui__Shutdown.GetPtr());
 		spdlog::debug("| FUN: CEngineVGui::ActivateGameUI          : {:#18x} |\n", CEngineVGui__ActivateGameUI.GetPtr());
 		spdlog::debug("+----------------------------------------------------------------+\n");
+		spdlog::debug("| FUN: CInputSystem::RunFrameIME            : {:#18x} |\n", CInputSystem__RunFrameIME.GetPtr());
+		spdlog::debug("+----------------------------------------------------------------+\n");
 		spdlog::debug("| FUN: Sys_InitGame                         : {:#18x} |\n", Sys_InitGame.GetPtr());
 		spdlog::debug("+----------------------------------------------------------------+\n");
 		spdlog::debug("| FUN: Host_Init_0                          : {:#18x} |\n", gHost_Init_0.GetPtr());
@@ -120,6 +127,8 @@ class VOpcodes : public IDetour
 		spdlog::debug("| FUN: HandleConfigFile                     : {:#18x} |\n", HandleConfigFile.GetPtr());
 		spdlog::debug("| FUN: ResetPreviousGameState               : {:#18x} |\n", ResetPreviousGameState.GetPtr());
 		spdlog::debug("| FUN: LoadPlayerConfig                     : {:#18x} |\n", LoadPlayerConfig.GetPtr());
+		spdlog::debug("| FUN: GetEngineClientThread                : {:#18x} |\n", GetEngineClientThread.GetPtr());
+		spdlog::debug("| FUN: MatchMaking_Frame                    : {:#18x} |\n", MatchMaking_Frame.GetPtr());
 		spdlog::debug("+----------------------------------------------------------------+\n");
 #if !defined (GAMEDLL_S0) || !defined (GAMEDLL_S1)
 		spdlog::debug("| FUN: CWin32Surface::initStaticData        : {:#18x} |\n", CWin32Surface_initStaticData.GetPtr());
@@ -165,6 +174,13 @@ class VOpcodes : public IDetour
 		CEngineVGui__ActivateGameUI = g_mGameDll.FindPatternSIMD(reinterpret_cast<rsig_t>("\x40\x53\x48\x83\xEC\x20\xF6\x81\x00\x00\x00\x00\x00\x48\x8B\xD9\x74\x08"), "xxxxxxxx?????xxxxx");
 		// 
 
+		//-------------------------------------------------------------------------
+#if defined (GAMEDLL_S0) || defined (GAMEDLL_S1)
+		CInputSystem__RunFrameIME = g_mGameDll.FindPatternSIMD(reinterpret_cast<rsig_t>("\x48\x8B\xC4\x57\x41\x55"), "xxxxxx");
+#elif defined (GAMEDLL_S2) || defined (GAMEDLL_S3)
+		CInputSystem__RunFrameIME = g_mGameDll.FindPatternSIMD(reinterpret_cast<rsig_t>("\x40\x57\x41\x54\x41\x55\x48\x83\xEC\x70"), "xxxxxxxxxx");
+#endif
+
 		//-------------------------------------------------------------------------
 		Sys_InitGame = g_mGameDll.FindPatternSIMD(reinterpret_cast<rsig_t>("\x48\x89\x5C\x24\x00\x57\x48\x81\xEC\x00\x00\x00\x00\x80\x3D\x00\x00\x00\x00\x00\x41\x8B\xD8"), "xxxx?xxxx????xx?????xxx");
 		// 0x1402958D0 // 48 89 5C 24 ? 57 48 81 EC ? ? ? ? 80 3D ? ? ? ? ? 41 8B D8 //